Anti-deformation device for surfacing of steel alloy flat plate and using method of anti-deformation device

Abstract

The invention relates to an anti-deformation device for surfacing of a steel alloy flat plate and a using method of the anti-deformation device, the device comprises a pressing plate, a tool bottom plate, a plurality of locking bolts and a plurality of locking nuts, and the pressing plate and the tool bottom plate are each provided with a plurality of kidney-shaped holes; the locking bolt sequentially penetrates through the kidney-shaped hole in the pressing plate and the kidney-shaped hole in the tool bottom plate and then is fixedly connected with the locking nut. The using method comprises the steps that firstly, the four pressing plates are attached to the periphery of the steel alloy flat plate, the relative positions are adjusted, then the locking bolts sequentially penetrate through the kidney-shaped holes in the pressing plates and the kidney-shaped holes in the tool bottom plate to be fixedly connected with the locking nuts, then surfacing is conducted on the upper surface of the steel alloy flat plate, and after surfacing is completed, the steel alloy flat plate is fixed to the tool bottom plate. And the steel alloy surfacing flat plate and the anti-deformation device are subjected to annealing destressing treatment together, then the anti-deformation device is disassembled, and a finished steel alloy surfacing flat plate product is obtained. Therefore, the anti-deformation effect of the design is uniform, local deformation caused by heat concentration is avoided, and the anti-deformation effect is good.

Description

Technical Field

[0001] The invention relates to an anti-deformation device and a use method thereof, belonging to the field of alloy material processing, and in particular to an anti-deformation device for steel alloy flat plate surfacing and a use method thereof. Background Art

[0002] Using a steel alloy flat plate as the substrate for surfacing welding, one or more layers of metal can be deposited on its surface, so that the finished steel alloy flat plate surfacing has high wear resistance, corrosion resistance and high temperature resistance. The finished steel alloy flat plate surfacing is mostly used to make wear-resistant linings, corrosion-resistant containers, high-temperature components and corrosion-resistant structural parts, etc., and is widely used in mining machinery, chemical equipment, power industry, marine engineering, engineering machinery and other fields. However, in the current flat plate surfacing process, it is usually necessary to first fix the steel alloy flat plate on the tooling bottom plate through continuous welding on all sides, and then remove it after the surfacing is completed; because the weld height of the fixed weld is small, and the welding stress generated during the surfacing process is large, it is easy to cause the fixed weld to crack, and re-welding is required, which in turn causes the deformation of the steel alloy flat plate; in addition, during the removal process, if the fixed weld is removed by carbon arc air gouging, it is easy to cut the alloy steel plate and reduce the material utilization rate; while the manual grinding method is inefficient. Therefore, it is necessary to design a new device to effectively prevent the deformation of the steel alloy flat plate during the surfacing process.

[0003] The Chinese patent application with application number 202010092476.8 and application date of February 14, 2020 discloses a tube sheet cladding machine and its anti-deformation device and cladding method, the anti-deformation device includes a tray, a support member and multiple groups of latches; the tray includes a bottom plate and side plates; the bottom plate and the side plates enclose a cooling trough with an upper opening for placing cooling water; the support member is detachably engaged in the cooling trough for supporting and fixing the tube sheet to be clad; multiple groups of sockets are provided on the support member, and the multiple sockets of each group are distributed on the same circumference, and each socket is vertically arranged and passes through the upper surface of the support member; the lower part of the tube sheet can be in the cooling water, so that the cladding of the tube sheet is carried out in the cooling water to avoid deformation of the tube sheet during the cladding process. Although the patent has a certain anti-deformation effect, it still has the following defects: The design has an uneven cooling effect, which causes deformation in local areas due to heat concentration, thereby reducing the anti-deformation effect.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the cooling effect is uneven, resulting in deformation of local areas due to heat concentration, thereby reducing the anti-deformation effect, and to provide an anti-deformation device for steel alloy flat plate surfacing, which has uniform anti-deformation effect, does not cause local deformation due to heat concentration, and has a good anti-deformation effect, and a method of using the device.

[0006] To achieve the above objectives, the technical solution of the present invention is: an anti-deformation device for steel alloy flat plate surfacing and a method of using the same, the anti-deformation device for steel alloy flat plate surfacing comprising a pressing plate, a tooling bottom plate, a plurality of locking bolts, and a plurality of locking nuts; The pressing plate includes two longitudinal pressing plates and two transverse pressing plates; the longitudinal pressing plates and the transverse pressing plates have the same width and thickness; one side of the longitudinal pressing plates and the transverse pressing plates along the long side direction are both first inclined surfaces, and the angle between the first inclined surface and the horizontal plane is 35°-40°; a plurality of first through waist-shaped holes are evenly distributed in the middle of the longitudinal pressing plate, and a plurality of second through waist-shaped holes are evenly distributed in the middle of the transverse pressing plate; the first waist-shaped holes and the second waist-shaped holes have the same size and shape; A boss is arranged in the middle of the tooling bottom plate, a groove is arranged around the boss, a plurality of longitudinal waist-shaped holes and a plurality of transverse waist-shaped holes are opened in the middle of the groove, and a narrow strip is arranged around the groove, and the height of the narrow strip is 4-5mm lower than the height of the boss; The width of the groove is greater than or equal to the minimum width of the longitudinal pressure plate or the transverse pressure plate and is less than the maximum width of the longitudinal pressure plate or the transverse pressure plate, and the sum of the thickness of the longitudinal pressure plate or the transverse pressure plate and the height of the narrow strip is less than the sum of the thickness of the steel alloy plate and the height of the boss; the steel alloy plate includes a surfacing side and an opposite surfacing side, and four second inclined surfaces are formed between the surfacing side and the opposite surfacing side, and the angle between the second inclined surface and the horizontal plane is the same as the angle of the first inclined surface; the second inclined surfaces are in contact with the first inclined surfaces of the longitudinal pressure plate and the transverse pressure plate respectively, the opposite surfacing side is in contact with the boss, and the longitudinal pressure plate and the transverse pressure plate are in contact with the narrow strip respectively; the longitudinal waist-shaped hole corresponds to the first waist-shaped hole one-to-one, and the transverse waist-shaped hole corresponds to the second waist-shaped hole one-to-one; the locking bolt passes through the first waist-shaped hole and the longitudinal waist-shaped hole in turn and is fixedly connected with the locking nut, and the locking bolt passes through the second waist-shaped hole and the transverse waist-shaped hole in turn and is fixedly connected with the locking nut.

[0007] The opposite side to the surfacing welding is parallel to and opposite to the surfacing welding side, and the single-side size of each side of the opposite side to the surfacing welding is 20-25 mm larger than that of the surfacing welding side.

[0008] The long axis of the first waist-shaped hole is parallel to the short side of the longitudinal pressing plate, and the long axis of the second waist-shaped hole is parallel to the short side of the transverse pressing plate.

[0009] The boss includes two horizontal sides and two vertical sides; The length of the longitudinal side is consistent with the length of the longitudinal pressing plate; The length of the transverse side is consistent with the length of the transverse pressing plate.

[0010] The grooves include two transverse grooves and two longitudinal grooves; The two transverse grooves and the two longitudinal grooves are respectively located outside the two transverse sides and the two longitudinal sides of the boss; The length of the transverse groove is consistent with the length of the transverse pressing plate, and the length of the longitudinal groove is consistent with the length of the longitudinal pressing plate; The width of the transverse groove is greater than or equal to the minimum width of the transverse pressing plate and less than the maximum width of the transverse pressing plate; the width of the longitudinal groove is greater than or equal to the minimum width of the longitudinal pressing plate and less than the maximum width of the longitudinal pressing plate.

[0011] The narrow strips include two transverse narrow strips and two longitudinal narrow strips; The two transverse narrow strips and the two longitudinal narrow strips are respectively located outside the two transverse grooves and the two longitudinal grooves; The length of the transverse narrow strip is consistent with the length of the transverse groove, and the length of the longitudinal narrow strip is consistent with the length of the longitudinal groove; The sum of the thickness of the longitudinal pressing plate and the height of the longitudinal narrow strip is less than the sum of the thickness of the steel alloy flat plate and the height of the boss; the sum of the thickness of the transverse pressing plate and the height of the transverse narrow strip is less than the sum of the thickness of the steel alloy flat plate and the height of the boss.

[0012] The method of use comprises the following steps: Step 1: Before the surfacing operation, the second bevel is machined around the steel alloy flat plate to obtain the steel alloy flat plate; Step 2: First place the steel alloy plate on the boss, then place two longitudinal pressing plates and two transverse pressing plates around the steel alloy plate, and adjust the relative positions until the first inclined surface is completely fitted with the second inclined surface and the first waist-shaped hole and the second waist-shaped hole correspond to the longitudinal waist-shaped hole and the transverse waist-shaped hole one by one, and then stop adjusting; Step 3: First, insert the locking bolts into the first waist-shaped hole and the longitudinal waist-shaped hole, and the second waist-shaped hole and the transverse waist-shaped hole in sequence, then pre-tighten the locking nuts and the locking bolts, and then tighten all the locking nuts and the corresponding locking bolts; Step 4: First remove the impurities on the cladding side and the 20-30mm area around the cladding side, and clean the cladding side; Step 5: Use argon arc welding to build up the build-up side to form a build-up layer on the upper surface of the build-up side. After the build-up is completed, a steel alloy build-up flat plate is obtained; Step 6: firstly perform annealing stress relief treatment on the steel alloy cladding plate together with the anti-deformation device, and then disassemble the anti-deformation device to obtain a finished steel alloy cladding plate.

[0013] In the second step, the first inclined surface and the second inclined surface are completely fitted together, which means: a 0.1 mm feeler gauge is inserted between the first inclined surface and the second inclined surface. When the 0.1 mm feeler gauge cannot be inserted into the gap between the first inclined surface and the second inclined surface, the first inclined surface and the second inclined surface are completely fitted together. When the 0.1 mm feeler gauge is inserted into the gap between the first inclined surface and the second inclined surface, the relative position of the first inclined surface and the second inclined surface is continuously adjusted until the 0.1 mm feeler gauge cannot be inserted into the gap between the first inclined surface and the second inclined surface. In the third step, pre-tightening the locking nuts and locking bolts and then tightening all the locking nuts and corresponding locking bolts means: first pre-tightening each locking nut and locking bolt, and then confirming that the steel alloy plate is located in the middle of the boss, and then completely tightening the locking nuts and corresponding locking bolts.

[0014] In the fifth step, the argon arc welding for surfacing the surfacing side means: under the conditions of argon purity of 99.99%, welding wire brand SCu6328, diameter of 2mm, and current polarity of DC positive connection, the push welding method is used to surfacing the surfacing side.

[0015] When welding the first layer on the cladding side, use a welding current of 240-260A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min; When welding the second layer or more on the cladding side, use a welding current of 260-280A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow of 30-40L / min; During the surfacing process, the overlap between the next weld and the previous weld is 1 / 3-1 / 2 of the weld width, and the inter-pass temperature is controlled at 120-150℃.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. An anti-deformation device for surfacing welding of a steel alloy flat plate and a method for using the same, wherein the second inclined surface is in contact with the first inclined surfaces of the longitudinal pressing plate and the transverse pressing plate respectively, the opposite side of the surfacing is in contact with the boss, the longitudinal pressing plate and the transverse pressing plate are in contact with the narrow strip respectively, the longitudinal waist-shaped hole corresponds to the first waist-shaped hole one by one, and the transverse waist-shaped hole corresponds to the second waist-shaped hole one by one; when used, the opposite side of the surfacing welding of the steel alloy flat plate is placed on the upper surface of the boss, and then two longitudinal pressing plates and two transverse pressing plates are respectively placed around the steel alloy flat plate, and the relative positions of the longitudinal pressing plate, the transverse pressing plate and the steel alloy flat plate are adjusted so that the second inclined surface of the steel alloy flat plate is in contact with the longitudinal pressing plate and the transverse pressing plate respectively The first inclined surface of the steel alloy plate is tightly fitted, and the longitudinal waist-shaped hole is matched with the position of the first waist-shaped hole, and the transverse waist-shaped hole is matched with the position of the second waist-shaped hole. Then, the locking bolt is passed through the longitudinal waist-shaped hole and the first waist-shaped hole, and the transverse waist-shaped hole and the second waist-shaped hole in sequence, and then fixed with the locking bolt to fix the steel alloy plate well. Since the first inclined surface and the second inclined surface have the same angle, the two inclined surfaces can be tightly fitted and fixed. At the same time, a pressure plate with the same structure is used to fix the four sides of the steel alloy plate, so that the force on the steel alloy plate is uniform. During the surfacing process, the stress on the steel alloy plate can be evenly dispersed to the entire anti-deformation device structure, avoiding local deformation. Therefore, the present invention can not only prevent the deformation of the steel alloy plate during the surfacing process, but also avoid local deformation and have a better anti-deformation effect.

[0017] 2. In an anti-deformation device for surfacing welding of a steel alloy flat plate and a method for using the same, the locking bolt passes through the first waist-shaped hole and the longitudinal waist-shaped hole in sequence and is fixedly connected with the locking nut, and the locking bolt passes through the second waist-shaped hole and the transverse waist-shaped hole in sequence and is fixedly connected with the locking nut; when used, before surfacing welding, the locking bolt passes through the waist-shaped hole on the pressure plate and the waist-shaped hole on the tooling bottom plate in sequence and is locked with the locking nut, which can better fix the steel alloy flat plate to prevent movement during surfacing welding. After surfacing welding is completed, the finished product can be removed by simply loosening the locking bolt, nut, and pressure plate, which is more convenient than the prior art that requires the removal of the fixed weld, and the removal process does not damage the finished product, thereby improving material utilization and work efficiency. Therefore, the present invention not only has a better anti-deformation effect, but also improves material utilization and work efficiency.

[0018] 3. In an anti-deformation device for surfacing welding of steel alloy flat plates and a method for using the same, the long axis of the first waist-shaped hole is parallel to the short side of the longitudinal pressing plate, and the long axis of the second waist-shaped hole is parallel to the short side of the transverse pressing plate; when used, the long axes of the first waist-shaped hole and the second waist-shaped hole have a certain adjustment range, which can more conveniently adjust the relative positions of the longitudinal pressing plate, the transverse pressing plate and the steel alloy flat plate, especially when the size of the steel alloy flat plate is larger or smaller than the size of the boss, the first waist-shaped hole and the second waist-shaped hole distributed laterally can be used to achieve flexible adjustment, which is suitable for fixing steel alloy flat plates of different sizes. Therefore, the present invention not only improves material utilization and work efficiency, but also improves the versatility of the device.

[0019] 4. An anti-deformation device for surfacing welding of steel alloy flat plates and a method for using the same, wherein the surfacing side is surfacing welded by push welding, and when the first layer of welding is performed on the surfacing side, a welding current of 240-260A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used. When the second layer and above of welding are performed on the surfacing side, a welding current of 260-280A is used, and the rest remain unchanged. The overlap between the next weld and the previous weld is 1 / 3-1 / 2 of the weld width, and the interpass temperature is controlled at 120-150°C. When applied, a lower welding current (such as 240-260A for the first layer) and a moderate voltage (20-24V) can It can reduce heat input, avoid the steel alloy plate from generating large thermal stress due to overheating, thereby reducing the risk of deformation. A moderate welding speed (10-15cm / min) can control the welding heat input, avoid heat accumulation in local areas, and prevent the steel alloy plate from deforming due to local overheating. A large gas flow rate (30-40L / min) can provide sufficient protection to avoid welding defects. An appropriate weld overlap (1 / 3-1 / 2 weld pass width) can ensure the uniformity of the cladding layer, avoid the appearance of unfused or over-melted areas, thereby reducing welding stress concentration and preventing deformation of the steel alloy plate. Controlling the interpass temperature at 120-150°C can prevent the steel alloy plate from overheating, reduce thermal stress concentration, and prevent deformation. Therefore, the present invention can not only prevent deformation, but also form a uniform cladding layer with good cladding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the assembly of the steel alloy flat plate and the anti-deformation device in the present invention.

[0021] Figure 2 It is a schematic diagram of steel alloy flat plate surfacing in the prior art.

[0022] Figure 3 It is a top view of the tooling base plate of the present invention.

[0023] Figure 4It is a front view of the tooling base plate of the present invention.

[0024] Figure 5 It is a top view of the longitudinal pressing plate in the present invention.

[0025] Figure 6 It is a front view of the longitudinal pressing plate in the present invention.

[0026] Figure 7 It is a top view of the transverse pressing plate in the present invention.

[0027] Figure 8 It is a front view of the transverse pressing plate in the present invention.

[0028] In the figure: pressing plate 1, longitudinal pressing plate 11, first waist-shaped hole 111, first inclined surface 112, first long side 113, first short side 114, transverse pressing plate 12, second waist-shaped hole 121, second long side 123, second short side 124, tooling base plate 2, boss 21, transverse side 211, longitudinal side 212, groove 22, transverse groove 221, longitudinal groove 222, longitudinal waist-shaped hole 225, transverse waist-shaped hole 226, narrow strip 23, transverse narrow strip 231, longitudinal narrow strip 232, locking bolt 3, locking nut 4, steel alloy flat plate 5, surfacing side 51, surfacing opposite side 52, second inclined surface 53, steel alloy surfacing flat plate 6, surfacing layer 61, fixed weld 62. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] See also Figure 1 — Figure 8 , an anti-deformation device for steel alloy flat plate surfacing and a method of using the same, the anti-deformation device for steel alloy flat plate surfacing comprising a pressing plate 1, a tooling bottom plate 2, a plurality of locking bolts 3, and a plurality of locking nuts 4; The pressing plate 1 includes two longitudinal pressing plates 11 and two transverse pressing plates 12; the longitudinal pressing plates 11 and the transverse pressing plates 12 are consistent in width and thickness; one side of the longitudinal pressing plates 11 and the transverse pressing plates 12 along the long side direction is a first inclined surface 112, and the angle between the first inclined surface 112 and the horizontal plane is 35°-40°; a plurality of first waist-shaped holes 111 are evenly distributed in the middle of the longitudinal pressing plate 11, and a plurality of second waist-shaped holes 121 are evenly distributed in the middle of the transverse pressing plate 12; the first waist-shaped holes 111 and the second waist-shaped holes 121 are consistent in size and shape; A boss 21 is provided in the middle of the tooling bottom plate 2, and a groove 22 is provided around the boss 21. A plurality of longitudinal waist-shaped holes 225 and a plurality of transverse waist-shaped holes 226 are provided in the middle of the groove 22. A narrow strip 23 is provided around the groove 22, and the height of the narrow strip 23 is 4-5 mm lower than that of the boss 21. The width of the groove 22 is greater than or equal to the minimum width of the longitudinal pressing plate 11 or the transverse pressing plate 12 and is less than the maximum width of the longitudinal pressing plate 11 or the transverse pressing plate 12. The sum of the thickness of the longitudinal pressing plate 11 or the transverse pressing plate 12 and the height of the narrow strip 23 is less than the sum of the thickness of the steel alloy flat plate 5 and the height of the boss 21. The steel alloy flat plate 5 includes a surfacing side 51 and a surfacing opposite side 52. Four second inclined surfaces 53 are formed between the surfacing side 51 and the surfacing opposite side 52. The angle between the second inclined surface 53 and the horizontal plane is the same as the angle of the first inclined surface 112. The second inclined surfaces 53 are respectively The first inclined surfaces 112 of the forward pressure plate 11 and the transverse pressure plate 12 are in contact with each other, the opposite side 52 of the surfacing is in contact with the boss 21, and the longitudinal pressure plate 11 and the transverse pressure plate 12 are in contact with the narrow strip 23 respectively; the longitudinal waist-shaped hole 225 corresponds to the first waist-shaped hole 111 one by one, and the transverse waist-shaped hole 226 corresponds to the second waist-shaped hole 121 one by one; the locking bolt 3 passes through the first waist-shaped hole 111 and the longitudinal waist-shaped hole 225 in turn and is fixedly connected with the locking nut 4, and the locking bolt 3 passes through the second waist-shaped hole 121 and the transverse waist-shaped hole 226 in turn and is fixedly connected with the locking nut 4.

[0031] The surfacing opposite side 52 is parallel to the surfacing side 51 and opposite to the surfacing side 51 . The single-side dimension of each side of the surfacing opposite side 52 is 20-25 mm larger than that of the surfacing side 51 .

[0032] The long axis of the first waist-shaped hole 111 is parallel to the short side of the longitudinal pressing plate 11 , and the long axis of the second waist-shaped hole 121 is parallel to the short side of the transverse pressing plate 12 .

[0033] The boss 21 includes two horizontal edges 211 and two longitudinal edges 212; The length of the longitudinal edge 212 is consistent with the length of the longitudinal pressing plate 11; The length of the transverse edge 211 is consistent with the length of the transverse pressing plate 12 .

[0034] The groove 22 includes two transverse grooves 221 and two longitudinal grooves 222; The two transverse grooves 221 and the two longitudinal grooves 222 are respectively located outside the two transverse sides 211 and the two longitudinal sides 212 of the boss 21; The length of the transverse groove 221 is consistent with the length of the transverse pressing plate 12, and the length of the longitudinal groove 222 is consistent with the length of the longitudinal pressing plate 11; The width of the transverse groove 221 is greater than or equal to the minimum width of the transverse pressure plate 12 and less than the maximum width of the transverse pressure plate 12 ; the width of the longitudinal groove 222 is greater than or equal to the minimum width of the longitudinal pressure plate 11 and less than the maximum width of the longitudinal pressure plate 11 .

[0035] The narrow strips 23 include two transverse narrow strips 231 and two longitudinal narrow strips 232; The two transverse narrow strips 231 and the two longitudinal narrow strips 232 are respectively located outside the two transverse grooves 221 and the two longitudinal grooves 222; The length of the transverse narrow strip 231 is consistent with the length of the transverse groove 221 , and the length of the longitudinal narrow strip 232 is consistent with the length of the longitudinal groove 222 ; The sum of the thickness of the longitudinal pressure plate 11 and the height of the longitudinal narrow strip 232 is less than the sum of the thickness of the steel alloy flat plate 5 and the height of the boss 21; the sum of the thickness of the transverse pressure plate 12 and the height of the transverse narrow strip 231 is less than the sum of the thickness of the steel alloy flat plate 5 and the height of the boss 21.

[0036] The method of use comprises the following steps: Step 1: Before the surfacing operation, the second inclined surface 53 is first processed around the steel alloy flat plate to obtain the steel alloy flat plate 5; Step 2: First, place the steel alloy plate 5 on the boss 21, and then place two longitudinal pressing plates 11 and two transverse pressing plates 12 around the steel alloy plate 5, and adjust the relative positions until the first inclined surface 112 and the second inclined surface 53 are completely fitted and the first waist-shaped hole 111 and the second waist-shaped hole 121 correspond to the longitudinal waist-shaped hole 225 and the transverse waist-shaped hole 226 one by one, and then stop adjusting; Step 3: First, insert the locking bolt 3 into the first waist-shaped hole 111 and the longitudinal waist-shaped hole 225, and the second waist-shaped hole 121 and the transverse waist-shaped hole 226 in sequence, then pre-tighten the locking nut 4 and the locking bolt 3, and then tighten all the locking nuts 4 and the corresponding locking bolts 3; Step 4: first remove the impurities on the cladding side 51 and the area 20-30 mm around the cladding side 51, and clean the cladding side 51; Step 5: Using argon arc welding to build up the build-up side 51, forming a build-up layer 61 on the upper surface of the build-up side 51. After the build-up is completed, a steel alloy build-up plate 6 is obtained; Step 6: firstly perform annealing stress relief treatment on the steel alloy cladding plate 6 together with the anti-deformation device, and then disassemble the anti-deformation device to obtain the finished steel alloy cladding plate.

[0037] In the second step, the first bevel 112 and the second bevel 53 are completely fitted together, which means: a 0.1 mm feeler gauge is inserted between the first bevel 112 and the second bevel 53. When the 0.1 mm feeler gauge cannot be inserted into the gap between the first bevel 112 and the second bevel 53, the first bevel 112 and the second bevel 53 are completely fitted together. When the 0.1 mm feeler gauge is inserted into the gap between the first bevel 112 and the second bevel 53, the relative positions of the first bevel 112 and the second bevel 53 are continuously adjusted until the 0.1 mm feeler gauge cannot be inserted into the gap between the first bevel 112 and the second bevel 53. In the third step, pre-tightening the locking nut 4 and the locking bolt 3, and then tightening all the locking nuts 4 and the corresponding locking bolts 3 means: first pre-tighten each locking nut 4 and the locking bolt 3, and then confirm that the steel alloy plate 5 is located in the middle of the boss 21, and then completely tighten the locking nut 4 and the corresponding locking bolt 3.

[0038] In the fifth step, the argon arc welding for surfacing the surfacing side 51 means that the argon purity is 99.99%, the welding wire brand is SCu6328, the diameter is 2mm, and the current polarity is direct current positive connection, and the push welding method is used to surfacing the surfacing side 51.

[0039] When performing the first layer welding on the cladding side 51, a welding current of 240-260A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used; When welding the second layer and above on the cladding side 51, use a welding current of 260-280A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min; During the surfacing process, the overlap between the next weld and the previous weld is 1 / 3-1 / 2 of the weld width, and the inter-pass temperature is controlled at 120-150℃.

[0040] The supplementary description of the present invention is as follows: In the present invention, the overlay layer 61 is preferably any one of copper alloy, nickel alloy and cobalt alloy.

[0041] In the present invention, the thickness of the cladding layer 61 is preferably 5-6 mm.

[0042] In the present invention, the material of the steel alloy flat plate 5 is preferably any one of Q235, Q345, and 20#.

[0043] In the present invention, the number of surfacing layers of the steel alloy flat plate 5 is preferably three.

[0044] The reason why the present invention prefers that the angle between the first bevel 112 and the horizontal plane is 35°-40° is that if the angle of the first bevel 112 is too large, the contact area between the first bevel 112 and the second bevel 53 will be reduced, the friction will be reduced, and at the same time, the welding stress will be concentrated in the top area of ​​the bevel, resulting in excessive local stress, which will weaken the fixing effect and reduce the structural stability of the device; if the angle is too small, the welding stress will be concentrated in the bottom area of ​​the bevel, resulting in excessive local stress, which will also make the fixing effect insufficient.

[0045] The reason why the present invention prefers the steel alloy flat plate 5 as the surfacing substrate is that the steel alloy material has good strength, good toughness and corrosion resistance, which can ensure the quality and stability of the surfacing layer 61 formed on the steel alloy flat plate 5. At the same time, the wide availability and relatively low cost of steel alloy make it economically competitive.

[0046] The preferred anti-deformation device of the present invention is suitable for a steel alloy flat plate 5 with a length of 450-550 mm and a width of 150-250 mm.

[0047] In the present invention, the width of the transverse groove 221 is preferably consistent with the width of the transverse pressing plate 12 , and the width of the longitudinal groove 222 is preferably consistent with the width of the longitudinal pressing plate 11 .

[0048] In the present invention, it is preferred that the maximum value and the minimum value of the width of the longitudinal pressing plate 11 are respectively consistent with the maximum value and the minimum value of the width of the transverse pressing plate 12 .

[0049] In the present invention, preferably, the number of the first waist-shaped holes 111 is 4-6, and the number of the second waist-shaped holes 121 is 2-4.

[0050] The present invention preferably places the finished steel alloy surfacing flat plate after annealing and stress relief treatment on an operating platform, and uses a steel ruler to detect the gap between the lower surface of the finished steel alloy surfacing flat plate and the operating platform. Its deformation is better than that of the existing surfacing method, and the deformation meets the technical requirements.

[0051] The preferred annealing stress relief treatment steps of the present invention are: first slowly heating the workpiece to a certain temperature; after the workpiece reaches the specified temperature, maintaining the temperature for a period of time to relax the residual stress inside the material; then slowly cooling the workpiece, usually by furnace cooling.

[0052] In the preferred fourth step of the present invention, the impurities are oil, water and rust.

[0053] In the preferred fourth step of the present invention, a rag is used to wipe away impurities such as oil, water, and rust.

[0054] In the present invention, acetone is preferably used to clean the surfacing side 51 in the fourth step.

[0055] The specific surfacing process in the fifth step of the preferred embodiment of the present invention is determined according to the materials of the steel alloy flat plate 5 and the surfacing layer 61 .

[0056] Embodiment 1: See also Figure 1 — Figure 8 , an anti-deformation device for steel alloy flat plate surfacing and a method of using the same, the anti-deformation device for steel alloy flat plate surfacing comprising a pressing plate 1, a tooling bottom plate 2, a plurality of locking bolts 3, and a plurality of locking nuts 4; the pressing plate 1 comprises two longitudinal pressing plates 11 and two transverse pressing plates 12; the longitudinal pressing plates 11 and the transverse pressing plates 12 have the same width and thickness, the longitudinal pressing plates 11 and the transverse pressing plates 12 are both provided with a first inclined surface 112 on one side along the long side direction, the angle between the first inclined surface 112 and the horizontal plane is 35°-40°, and the middle part of the longitudinal pressing plate 11 has a plurality of locking bolts 3 and a plurality of locking nuts 4 distributed at equal intervals. The first waist-shaped hole 111 is through, and a plurality of through second waist-shaped holes 121 are evenly spaced in the middle of the horizontal pressing plate 12; the first waist-shaped hole 111 is consistent with the second waist-shaped hole 121 in size and shape; a boss 21 is arranged in the middle of the tooling bottom plate 2, and a groove 22 is arranged around the boss 21, and a plurality of through longitudinal waist-shaped holes 225 and a plurality of through transverse waist-shaped holes 226 are opened in the middle of the groove 22, and a narrow strip 23 is arranged around the groove 22, and the height of the narrow strip 23 is 4-5mm lower than the height of the boss 21; the width of the groove 22 The width of the longitudinal pressing plate 11 or the transverse pressing plate 12 is greater than or equal to the minimum width and less than the maximum width of the longitudinal pressing plate 11 or the transverse pressing plate 12, and the sum of the thickness of the longitudinal pressing plate 11 or the transverse pressing plate 12 and the height of the narrow strip 23 is less than the sum of the thickness of the steel alloy flat plate 5 and the height of the boss 21; the steel alloy flat plate 5 includes a surfacing side 51 and a surfacing opposite side 52, and four second inclined surfaces 53 are formed between the surfacing side 51 and the surfacing opposite side 52, and the angle between the second inclined surface 53 and the horizontal plane is the same as the angle of the first inclined surface 112; the second inclined surfaces 53 are respectively connected to the longitudinal pressing plate 11 , the first inclined surface 112 of the transverse pressure plate 12 is in contact with the said welding opposite side 52 is in contact with the boss 21, the said longitudinal pressure plate 11 and the transverse pressure plate 12 are in contact with the narrow strip 23 respectively; the said longitudinal waist-shaped hole 225 corresponds to the first waist-shaped hole 111 one by one, the said transverse waist-shaped hole 226 corresponds to the second waist-shaped hole 121 one by one; the said locking bolt 3 passes through the first waist-shaped hole 111 and the longitudinal waist-shaped hole 225 in turn and is fixedly connected with the locking nut 4, the said locking bolt 3 passes through the second waist-shaped hole 121 and the transverse waist-shaped hole 226 in turn and is fixedly connected with the locking nut 4.

[0057] When in use, first place the steel alloy flat plate 5 on the tooling bottom plate 2, so that the surfacing opposite side 52 contacts the boss 21 and adjust the position of the steel alloy flat plate 5 so that the surfacing opposite side 52 is located in the middle of the boss 21, and then place the two longitudinal pressing plates 11 and the two transverse pressing plates 12 on the four sides of the steel alloy flat plate 5 respectively, adjust the relative positions of the two longitudinal pressing plates 11, the two transverse pressing plates 12 and the steel alloy flat plate 5, so that the first inclined surface 112 and the second inclined surface 53 fit tightly, and the first waist-shaped hole 111 and the second waist-shaped hole 121 correspond to the longitudinal waist-shaped hole 225 and the transverse waist-shaped hole 226 respectively, and then respectively insert the locking bolts 3 into the first waist-shaped hole 111 and the longitudinal waist-shaped hole 225, the second waist-shaped hole 121 and the transverse waist-shaped hole 226, and then tighten the locking nuts 4 and the corresponding locking bolts 3 to fix the steel alloy flat plate 5, and finally perform tightening on the upper surface of the surfacing side 51. surfacing; when the surfacing is completed, loosen the locking nut 4 and the locking bolt 3, and then remove the two longitudinal pressure plates 11 and the two transverse pressure plates 12 respectively, and the finished steel alloy surfacing flat plate can be removed; since the first inclined surface 112 and the second inclined surface 53 have the same angle, the two inclined surfaces can fit tightly; through the tooling bottom plate 2 and the waist-shaped holes in conjunction with the locking bolts 3 and the locking nuts 4, the steel alloy flat plate 5 can be well and evenly fixed; in addition, a pressure plate 1 with the same structure is used to fix the steel alloy flat plate 5 on all sides, so that the force on the steel alloy flat plate 5 is uniform, so that the stress on the steel alloy flat plate 5 during the surfacing process can be evenly dispersed to the entire device structure, avoiding local deformation, and having a better anti-deformation effect; at the same time, compared with the prior art that requires removal of the fixing weld 62, the present invention is more convenient, and the removal process does not damage the finished product, thereby improving material utilization and work efficiency.

[0058] Embodiment 2: The basic contents are the same as those of Embodiment 1, except that: the surfacing opposite side 52 is parallel to the surfacing side 51 , and the single-side dimension of each side of the surfacing opposite side 52 is 20-25 mm larger than that of the surfacing side 51 .

[0059] When in use, surfacing is performed on the upper surface of the surfacing side 51 to form a surfacing layer 61, while the surfacing opposite side 52 contacts the upper surface of the boss 21 to provide support for the steel alloy flat plate 5. The size of the surfacing opposite side 52 is relatively large, which provides a larger support area for the steel alloy flat plate 5 and enhances the stability of the overall structure. In particular, during the surfacing process, the formation of the surfacing layer 61 will produce large thermal stress and mechanical stress. The supporting effect of the surfacing opposite side 52 can effectively disperse these stresses and reduce the deformation risk of the steel alloy flat plate 5. At the same time, the single-side size of each side of the surfacing opposite side 52 is 20-25mm larger than that of the surfacing side 51, and a second inclined surface 53 can be formed around the steel alloy flat plate 5. The second inclined surface 53 is tightly fitted with the first inclined surface 112 of the transverse pressure plate 12 and the longitudinal pressure plate 11, and the four sides of the steel alloy flat plate 5 are fixed, so that the steel alloy flat plate 5 remains stable during the surfacing process, further improving the fixing effect and preventing the steel alloy flat plate 5 from displacement or deformation during the surfacing process.

[0060] Embodiment 3: The basic contents are the same as those of Embodiment 1, except that the long axis of the first waist-shaped hole 111 is parallel to the short side of the longitudinal pressing plate 11 , and the long axis of the second waist-shaped hole 121 is parallel to the short side of the transverse pressing plate 12 .

[0061] When in use, the first inclined surface 112 of the longitudinal pressure plate 11 and the transverse pressure plate 12 are fitted with the second inclined surface 53 of the steel alloy flat plate 5. When adjusting the relative positions of the longitudinal pressure plate 11, the transverse pressure plate 12 and the steel alloy flat plate 5, the long axes of the first waist-shaped holes 111 and the second waist-shaped holes 121 have a certain adjustment range, which can conveniently adjust the relative positions of the longitudinal pressure plate 11, the transverse pressure plate 12 and the steel alloy flat plate 5, especially when the size of the steel alloy flat plate 5 is not completely consistent with the size of the boss 21 (that is, the size of the steel alloy flat plate 5 is larger or smaller than the size of the boss 21), flexible adjustment can be achieved through the transversely distributed first waist-shaped holes 111 and the second waist-shaped holes 121, while the vertical waist-shaped holes cannot achieve this adjustment effect. Therefore, this design can be suitable for surfacing of steel alloy flat plates 5 of different sizes.

[0062] Embodiment 4: The basic content is the same as that of Example 1, except that: the groove 22 includes two transverse grooves 221 and two longitudinal grooves 222; the two transverse grooves 221 and the two longitudinal grooves 222 are respectively located on the outside of the two transverse sides 211 and the two longitudinal sides 212 of the boss 21; the length of the transverse groove 221 is consistent with the length of the transverse pressure plate 12, and the length of the longitudinal groove 222 is consistent with the length of the longitudinal pressure plate 11; the width of the transverse groove 221 is greater than or equal to the minimum width of the transverse pressure plate 12 and less than the maximum width of the transverse pressure plate 12; the width of the longitudinal groove 222 is greater than or equal to the minimum width of the longitudinal pressure plate 11 and less than the maximum width of the longitudinal pressure plate 11.

[0063] When in use, the transverse pressure plate 12 and the longitudinal pressure plate 11 are placed above the corresponding transverse groove 221 and the longitudinal groove 222 respectively. Since the length of the transverse groove 221 is consistent with the length of the transverse pressure plate 12, and the length of the longitudinal groove 222 is consistent with the length of the longitudinal pressure plate 11, the pressure plate 1 can be accurately aligned with and cover the groove 22. After adjusting the relative positions of the longitudinal pressure plate 11, the transverse pressure plate 12 and the steel alloy plate 5, they are fixed by the locking bolts 3 and the locking nuts 4 to ensure that the transverse pressure plate 12 and the longitudinal pressure plate 11 are tightly matched with the groove 22, which can effectively limit the movement of the longitudinal pressure plate 11 and the transverse pressure plate 12 to prevent them from being displaced or loosened during the surfacing process. At the same time, the stability of the overall structure is enhanced, local stress concentration is avoided, and deformation of the steel alloy plate 5 is prevented during the surfacing process. In addition, the design of the groove 22 makes the installation of the transverse pressure plate 12 and the longitudinal pressure plate 11 more convenient, further improving the assembly efficiency and fixing effect of the device.

[0064] Embodiment 5: The basic content is the same as that of Example 1, except that: the narrow strip 23 includes two transverse narrow strips 231 and two longitudinal narrow strips 232; the two transverse narrow strips 231 and the two longitudinal narrow strips 232 are respectively located on the outside of the two transverse grooves 221 and the two longitudinal grooves 222; the length of the transverse narrow strip 231 is consistent with the length of the transverse groove 221, and the length of the longitudinal narrow strip 232 is consistent with the length of the longitudinal groove 222; the sum of the thickness of the longitudinal pressure plate 11 and the height of the longitudinal narrow strip 232 is less than the sum of the thickness of the steel alloy plate 5 and the height of the boss 21; the sum of the thickness of the transverse pressure plate 12 and the height of the transverse narrow strip 231 is less than the sum of the thickness of the steel alloy plate 5 and the height of the boss 21.

[0065] When in use, the transverse narrow strip 231 and the longitudinal narrow strip 232 are respectively located on the outside of the transverse groove 221 and the longitudinal groove 222, and their lengths are consistent with the groove 22, ensuring that the pressure plate 1 will not shift during the installation process; since the sum of the thickness of the longitudinal pressure plate 11 and the height of the longitudinal narrow strip 232 is less than the sum of the thickness of the steel alloy plate 5 and the height of the boss 21, the sum of the thickness of the transverse pressure plate 12 and the height of the transverse narrow strip 231 is less than the sum of the thickness of the steel alloy plate 5 and the height of the boss 21, the pressure plate 1 will not interfere with the surfacing side 51 of the steel alloy plate 5, ensuring the stability of the steel alloy plate 5, the design of the transverse narrow strip 231 and the longitudinal narrow strip 232 further enhances the fixing effect of the pressure plate, ensuring that the steel alloy plate 5 remains stable during the surfacing process, and at the same time, the supporting role of the transverse narrow strip 231 and the longitudinal narrow strip 232 enhances the stability of the overall structure and effectively disperses the thermal stress and mechanical stress generated during the surfacing process.

[0066] Embodiment 6: The basic content is the same as that of Embodiment 1, except that: the longitudinal pressing plate 11 includes two first long sides 113 and two first short sides 114, the transverse pressing plate 12 includes two second long sides 123 and two second short sides 124, the length of the longitudinal pressing plate 11 is the length of the first long side 113, and the length of the transverse pressing plate 12 is the length of the second long side 123; a first inclined surface 112 is provided on one side of the first long sides 113 of the longitudinal pressing plate 11, and a first inclined surface 112 is provided on one side of the second long sides 123 of the transverse pressing plate 12; the first waist-shaped hole 11 The long axis of the second waist-shaped hole 121 is parallel to the first short side 114 of the longitudinal pressing plate 11, and the long axis of the second waist-shaped hole 121 is parallel to the second short side 124 of the transverse pressing plate 12; the length of the longitudinal side (212) of the boss 21 is consistent with the length of the first long side 113, and the width of the boss 21 (i.e. the length of the transverse side 211) is consistent with the length of the second long side 123; the length of the transverse groove 221 and the length of the transverse narrow strip 231 are consistent with the length of the second long side 123, and the length of the longitudinal groove 222 and the length of the longitudinal narrow strip 232 are consistent with the length of the first long side 113.

[0067] Embodiment 7: The basic content is the same as that of Example 1, except that: the anti-deformation device for surfacing welding of a steel alloy flat plate is suitable for surfacing welding of a steel alloy flat plate 5 with a length of 450-550 mm and a width of 150-250 mm, the length of the surfacing side 51 is 450-550 mm and the width is 150-250 mm, the length of the surfacing opposite side 52 is 500-600 mm and the width is 190-300 mm; copper alloy is used as the material of the surfacing layer 61; The length of the longitudinal pressing plate 11 is 400-600mm, the width is 200-250mm, and the height is 15-20mm; the length of the transverse pressing plate 12 is 300-350mm, the width is 200-250mm, and the height is 15-20mm; the length of the tooling base plate 2 is 1050-1250mm, the height is 50-60mm, and the width is 550-650mm; the length of the boss 21 is consistent with the length of the longitudinal pressing plate 11, which is 400-600mm; the height of the boss 21 is 46-50mm, and the height of the boss 21 is 46-50mm. The width of the platform 21 is consistent with the length of the horizontal pressure plate 12, which is 300-350mm; the length of the groove 22 is 500-600mm, the width is 200-250mm, and the height is 20-25mm; the height of the narrow strip 23 is 15-20mm; the width of the first waist-shaped hole 111, the second waist-shaped hole 121, the longitudinal waist-shaped hole 235, and the transverse waist-shaped hole 236 are all 15-20mm and 80-120mm respectively; the number of the first waist-shaped holes 111 is 4-6, and the number of the second waist-shaped holes 121 is 2-4.

[0068] When applied, the above process is used to produce a finished alloy steel-copper alloy composite plate with a length of 450-550mm and a width of 150-250mm, and then the alloy steel-copper alloy composite plate is milled and flattened on a machine tool, and then the alloy steel-copper alloy composite plate is cut with molybdenum wire to obtain an alloy steel-copper alloy composite plate track bar of corresponding size. The alloy steel-copper alloy composite plate track bar is welded to the inner wall of the steel pipe body to play the role of guiding sliding and wear resistance. Since the steel alloy side of the alloy steel-copper alloy composite plate track bar is made of the same material as the steel pipe body and has good weldability, the steel alloy side of the alloy steel-copper alloy composite plate track bar is welded to the inner wall of the steel pipe body.

[0069] Embodiment 8: The basic content is the same as that of Example 1, except that the method of use comprises the following steps: Step 1: Before the surfacing operation, the second inclined surface 53 is first processed around the steel alloy flat plate to obtain the steel alloy flat plate 5; Step 2: First, place the steel alloy plate 5 on the boss 21, and then place two longitudinal pressing plates 11 and two transverse pressing plates 12 around the steel alloy plate 5, and adjust the relative positions until the first inclined surface 112 and the second inclined surface 53 are completely fitted and the first waist-shaped hole 111 and the second waist-shaped hole 121 correspond to the longitudinal waist-shaped hole 225 and the transverse waist-shaped hole 226 one by one, and then stop adjusting; Step 3: First, insert the locking bolt 3 into the first waist-shaped hole 111 and the longitudinal waist-shaped hole 225, and the second waist-shaped hole 121 and the transverse waist-shaped hole 226 in sequence, then pre-tighten the locking nut 4 and the locking bolt 3, and then tighten all the locking nuts 4 and the corresponding locking bolts 3; Step 4: first remove the impurities on the cladding side 51 and the area 20-30 mm around the cladding side 51, and clean the cladding side 51; Step 5: Using argon arc welding to build up the build-up side 51, forming a build-up layer 61 on the upper surface of the build-up side 51. After the build-up is completed, a steel alloy build-up plate 6 is obtained; Step 6: firstly perform annealing stress relief treatment on the steel alloy cladding plate 6 together with the anti-deformation device, and then disassemble the anti-deformation device to obtain the finished steel alloy cladding plate.

[0070] Embodiment 9: The basic content is the same as Example 8, except that: in the fifth step, the use of argon arc welding to build up the welding side 51 means: under the conditions of argon purity of 99.99%, welding wire brand SCu6328, diameter of 2mm, and current polarity of DC positive connection, the push welding method is used to build up the welding side 51.

[0071] When applied, during the cladding process, a push welding method is adopted, the welding gun is pushed forward, and the welding wire is pushed forward from the welding gun to form a welding arc, and the area to be welded on the cladding side 51 is preheated to promote the fusion of the weld and reduce the welding stress.

[0072] Embodiment 10: The basic content is the same as Example 8, except that: when the first layer of welding is performed on the surfacing side 51, a welding current of 240-260A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used; when the second layer and above of welding are performed on the surfacing side 51, a welding current of 260-280A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used; during the surfacing process, the overlap between the next weld and the previous weld is 1 / 3-1 / 2 of the weld width, and the interpass temperature is controlled at 120-150°C.

[0073] When applied, welding current and voltage directly affect welding heat input. When surfacing, using a lower welding current of 240-260A and a moderate voltage of 20-24V can reduce heat input and avoid large thermal stress caused by overheating of the steel alloy plate, thereby reducing the risk of deformation; using a moderate welding speed of 10-15cm / min can control welding heat input, avoid heat accumulation in local areas, and prevent deformation of the steel alloy plate due to local overheating; using a larger gas flow of 30-40L / min can provide sufficient protection to prevent the weld metal from contacting with harmful gases such as oxygen and nitrogen in the air, avoid oxidation and nitridation of the weld, and reduce welding defects such as pores and slag inclusions; when welding the second layer and above When welding, the welding current is increased to 260-280A, which can quickly form the required thickness of the weld overlay layer, ensure the good combination of the weld overlay layer with the substrate and between the layers, improve the overall performance of the weld overlay layer, and ensure the fusion and filling effect of the weld; during the weld overlay process, the appropriate weld overlap is 1 / 3-1 / 2 of the weld bead width, which can ensure the uniformity of the weld overlay layer and avoid the occurrence of unfused or over-melted areas, thereby reducing welding stress concentration and preventing deformation of the steel alloy plate; controlling the interpass temperature at 120-150°C can prevent the steel alloy plate from overheating, reduce thermal stress concentration and prevent deformation; the coordination of the above process parameters can not only prevent the steel alloy plate 5 from deformation during the weld overlay process, but also improve the quality of the weld overlay layer 61.

[0074] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. An anti-deformation device for surfacing welding of steel alloy flat plates, characterized in that: The anti-deformation device for steel alloy flat plate surfacing comprises a pressing plate (1), a tooling base plate (2), a plurality of locking bolts (3), and a plurality of locking nuts (4); The pressing plate (1) comprises two longitudinal pressing plates (11) and two transverse pressing plates (12); the longitudinal pressing plates (11) and the transverse pressing plates (12) are of the same width and thickness; one side of the longitudinal pressing plates (11) and the transverse pressing plates (12) along the long side direction is a first inclined surface (112); the angle between the first inclined surface (112) and the horizontal plane is 35°-40°; a plurality of first waist-shaped holes (111) are evenly distributed in the middle of the longitudinal pressing plate (11); a plurality of second waist-shaped holes (121) are evenly distributed in the middle of the transverse pressing plate (12); the first waist-shaped holes (111) and the second waist-shaped holes (121) are of the same size and shape; A boss (21) is provided in the middle of the tooling bottom plate (2), a groove (22) is provided around the boss (21), a plurality of through longitudinal waist-shaped holes (225) and a plurality of through transverse waist-shaped holes (226) are provided in the middle of the groove (22), a narrow strip (23) is provided around the groove (22), and the height of the narrow strip (23) is 4-5 mm lower than the height of the boss (21); The width of the groove (22) is greater than or equal to the minimum width of the longitudinal pressing plate (11) or the transverse pressing plate (12) and less than the maximum width of the longitudinal pressing plate (11) or the transverse pressing plate (12); the sum of the thickness of the longitudinal pressing plate (11) or the transverse pressing plate (12) and the height of the narrow strip (23) is less than the sum of the thickness of the steel alloy flat plate (5) and the height of the boss (21); the steel alloy flat plate (5) comprises a surfacing side (51) and a surfacing opposite side (52); four second inclined surfaces (53) are formed between the surfacing side (51) and the surfacing opposite side (52); the angle between the second inclined surface (53) and the horizontal plane is the same as the angle between the first inclined surface (112); the second inclined surfaces (53) are respectively convex to the longitudinal The first inclined surfaces (112) of the pressure plate (11) and the transverse pressure plate (12) are in contact with each other, the opposite side (52) of the surfacing is in contact with the boss (21), and the longitudinal pressure plate (11) and the transverse pressure plate (12) are in contact with the narrow strip (23) respectively; the longitudinal waist-shaped holes (225) correspond to the first waist-shaped holes (111) one by one, and the transverse waist-shaped holes (226) correspond to the second waist-shaped holes (121) one by one; the locking bolt (3) passes through the first waist-shaped hole (111) and the longitudinal waist-shaped hole (225) in sequence and is fixedly connected with the locking nut (4); the locking bolt (3) passes through the second waist-shaped hole (121) and the transverse waist-shaped hole (226) in sequence and is fixedly connected with the locking nut (4).

2. The anti-deformation device for steel alloy flat plate surfacing according to claim 1, characterized in that: The surfacing opposite side (52) is parallel to the surfacing side (51) and opposite to the surfacing side, and the single-side dimension of each side of the surfacing opposite side (52) is 20-25 mm larger than that of the surfacing side (51).

3. The anti-deformation device for steel alloy flat plate surfacing according to claim 1, characterized in that: The long axis of the first waist-shaped hole (111) is parallel to the short side of the longitudinal pressing plate (11), and the long axis of the second waist-shaped hole (121) is parallel to the short side of the transverse pressing plate (12).

4. The anti-deformation device for steel alloy flat plate surfacing according to claim 1, characterized in that: The boss (21) comprises two transverse sides (211) and two longitudinal sides (212); The length of the longitudinal edge (212) is consistent with the length of the longitudinal pressing plate (11); The length of the transverse edge (211) is consistent with the length of the transverse pressing plate (12).

5. The anti-deformation device for steel alloy flat plate surfacing according to claim 4, characterized in that: The groove (22) comprises two transverse grooves (221) and two longitudinal grooves (222); The two transverse grooves (221) and the two longitudinal grooves (222) are respectively located outside the two transverse sides (211) and the two longitudinal sides (212) of the boss (21); The length of the transverse groove (221) is consistent with the length of the transverse pressing plate (12), and the length of the longitudinal groove (222) is consistent with the length of the longitudinal pressing plate (11); The width of the transverse groove (221) is greater than or equal to the minimum width of the transverse pressing plate (12) and less than the maximum width of the transverse pressing plate (12); the width of the longitudinal groove (222) is greater than or equal to the minimum width of the longitudinal pressing plate (11) and less than the maximum width of the longitudinal pressing plate (11).

6. The anti-deformation device for steel alloy flat plate surfacing according to claim 5, characterized in that: The narrow strips (23) include two transverse narrow strips (231) and two longitudinal narrow strips (232); The two transverse narrow strips (231) and the two longitudinal narrow strips (232) are respectively located outside the two transverse grooves (221) and the two longitudinal grooves (222); The length of the transverse narrow strip (231) is consistent with the length of the transverse groove (221), and the length of the longitudinal narrow strip (232) is consistent with the length of the longitudinal groove (222); The sum of the thickness of the longitudinal pressing plate (11) and the height of the longitudinal narrow strip (232) is less than the sum of the thickness of the steel alloy flat plate (5) and the height of the boss (21); the sum of the thickness of the transverse pressing plate (12) and the height of the transverse narrow strip (231) is less than the sum of the thickness of the steel alloy flat plate (5) and the height of the boss (21).

7. A method for using the anti-deformation device for steel alloy flat plate surfacing according to claim 1, characterized in that: The method of use comprises the following steps: The first step: before the surfacing operation, the second inclined surface (53) is first processed around the steel alloy flat plate to obtain the steel alloy flat plate (5); Step 2: firstly place the steel alloy plate (5) on the boss (21), then place two longitudinal pressing plates (11) and two transverse pressing plates (12) around the steel alloy plate (5), and adjust the relative positions until the first inclined surface (112) and the second inclined surface (53) are completely in contact with each other and the first waist-shaped hole (111) and the second waist-shaped hole (121) correspond to the longitudinal waist-shaped hole (225) and the transverse waist-shaped hole (226) respectively, and then stop adjusting; Step 3: First, insert the locking bolt (3) into the first waist-shaped hole (111) and the longitudinal waist-shaped hole (225), and the second waist-shaped hole (121) and the transverse waist-shaped hole (226) in sequence, then pre-tighten the locking nut (4) and the locking bolt (3), and then tighten all the locking nuts (4) and the corresponding locking bolts (3); Step 4: first remove impurities on the cladding side (51) and in the 20-30 mm area around the cladding side (51), and clean the cladding side (51); Step 5: Using argon arc welding to build up the build-up welding side (51), forming a build-up welding layer (61) on the upper surface of the build-up welding side (51), and after the build-up welding is completed, a steel alloy build-up welding plate (6) is obtained; Step 6: firstly subject the steel alloy cladding plate (6) and the anti-deformation device to annealing stress relief treatment, and then dismantle the anti-deformation device to obtain a finished steel alloy cladding plate.

8. The method for using the anti-deformation device for steel alloy flat plate surfacing according to claim 7, characterized in that: In the second step, the first inclined surface (112) and the second inclined surface (53) are completely fitted together, which means: a 0.1 mm feeler gauge is inserted between the first inclined surface (112) and the second inclined surface (53); when the 0.1 mm feeler gauge cannot be inserted into the gap between the first inclined surface (112) and the second inclined surface (53), the first inclined surface (112) and the second inclined surface (53) are completely fitted together; when the 0.1 mm feeler gauge is inserted into the gap between the first inclined surface (112) and the second inclined surface (53), the relative position of the first inclined surface (112) and the second inclined surface (53) is continuously adjusted until the 0.1 mm feeler gauge cannot be inserted into the gap between the first inclined surface (112) and the second inclined surface (53); In the third step, the pre-tightening of the locking nuts (4) and the locking bolts (3) and then tightening all the locking nuts (4) and the corresponding locking bolts (3) means: firstly tightening each locking nut (4) and the locking bolt (3) in advance, and then confirming that the steel alloy plate (5) is located in the middle of the boss (21), and then completely tightening the locking nuts (4) and the corresponding locking bolts (3).

9. The method for using the anti-deformation device for steel alloy flat plate surfacing according to claim 7, characterized in that: In the fifth step, the argon arc welding for surfacing the surfacing side (51) refers to: surfacing the surfacing side (51) by push welding under the conditions of argon gas purity of 99.99%, welding wire grade SCu6328, diameter of 2 mm, and current polarity of direct current.

10. The method for using the anti-deformation device for steel alloy flat plate surfacing according to claim 9, characterized in that: When performing the first layer welding on the cladding side (51), a welding current of 240-260A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used; When welding the second layer or more of the cladding side (51), a welding current of 260-280A, a voltage of 20-24V, a welding speed of 10-15cm / min, and a gas flow rate of 30-40L / min are used; During the surfacing process, the overlap between the next weld and the previous weld is 1 / 3-1 / 2 of the weld width, and the inter-pass temperature is controlled at 120-150℃.

Images