A sheeting construction process

Abstract

The present application provides a kind of sheet construction process, specifically comprising the following steps: S1, sheet splicing, before sheet splicing, set ballast iron and press plate;S2, weld stress release, using weld straightening equipment to the weld on the sheet for secondary straightening;S3, reinforcing material welding, after secondary straightening, the edge of the sheet is set with press plate, and a plurality of parallel reinforcing materials are arranged on the surface of one side of the sheet along the width direction of the sheet, to obtain a rack: S4, corner weld thin horse deformation explosive correction, the non-structural surface of the corner weld of the reinforcing material is burned with small fire, and the temperature is controlled below 300 DEG C.The technical scheme of the present application solves the problem that the flatness of the sheet is difficult to control during shipbuilding.

Description

Technical Field

[0001] This invention relates to the field of thin-plate construction technology for ships, and more particularly to a thin-plate construction process. Background Technology

[0002] In the 21st century, with the advancement of science and technology, conventional transport ships can no longer meet humanity's demands for ocean exploration, necessitating the construction of higher-performance, higher-value-added vessels. To reduce ship weight and increase speed while maintaining strength, thinner plates are increasingly being used in shipbuilding. However, due to their inherent characteristics, the flatness of thin plates is difficult to control, making it challenging to achieve the required standards for ship cabin space and aesthetics. For shipyards, controlling the flatness of thin-plate construction has been a key research and improvement topic in recent years. Summary of the Invention

[0003] To address the aforementioned technical problem of difficulty in controlling the flatness of thin plates during shipbuilding, a thin plate construction process is provided.

[0004] The technical means employed in this invention are as follows:

[0005] A thin-plate construction process specifically includes the following steps:

[0006] S1, Thin Plate Panel

[0007] Before splicing thin plates, ballast irons are set on both sides of the weld along the length of the weld, and pressure plates are set along the edge of the thin plates to fix the thin plates.

[0008] S2, Weld stress relief

[0009] After the thin plates are spliced ​​together, the ballast iron and pressure plate are removed. Then, the welds on the plates are straightened a second time using a weld straightening device to eliminate the internal stress in the welds.

[0010] S3, Welding of reinforcing materials

[0011] After secondary leveling, pressure plates are placed on the edges of the sheet, and several parallel reinforcing members are evenly arranged along the width of the sheet on one side surface. Then, the reinforcing members are welded to the sheet in the following order to obtain the sheet frame:

[0012] (1) Weld the reinforcing member I located at the center of the plate;

[0013] (2) Weld the two reinforcing members located at both ends of the plate in sequence: Reinforcing member II and reinforcing member III;

[0014] (3) Using the reinforcing material I as the axis of symmetry, divide all the reinforcing materials into two regions: the left half and the right half;

[0015] If stiffener III is located in the left half, the remaining stiffeners are welded by alternately selecting one from the right half to the left half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area.

[0016] If stiffener III is located in the right half, the remaining stiffeners are welded by alternately selecting one from the left half to the right half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area.

[0017] S4. Fire straightening of lean muscle deformation in fillet welds.

[0018] Flip the plate frame and perform a small-scale back-heating of the non-structural surface of the fillet weld of the reinforcing material, keeping the temperature below 300℃.

[0019] Furthermore, step S1, the thin plate splicing is carried out on a flat iron platform, the flatness of which is no greater than 2 mm. 2 .

[0020] Furthermore, in step S2, a three-core roller is used to roll the weld to eliminate the internal stress in the weld.

[0021] Furthermore, in step S3, after each welding, the weld between the reinforcing member and the plate is slowly cooled before welding the next reinforcing member; when welding each reinforcing member, ballast irons are set on both sides of the reinforcing member to reduce the welding deformation of the plate.

[0022] Furthermore, it also includes:

[0023] S5, Back Beam Installation

[0024] On one side of the plate frame where the reinforcing member is set, a back beam is installed along the length of the plate frame. The back beam has mounting holes corresponding to the positions of each reinforcing member. Each reinforcing member is embedded in the corresponding mounting hole, and the back beam is welded and fixed to the surface of the plate frame.

[0025] Furthermore, it also includes:

[0026] S6, Component Transfer

[0027] A vertical pallet is manufactured, which includes a base plate on which several uprights are installed at intervals. The uprights are parallel to each other, and the space between two adjacent uprights is used to accommodate the pallet frame. The pallet frame with the back beam is placed in the space on the vertical pallet for transportation.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The thin plate construction process provided by this invention ensures the flatness of both sides of the weld during thin plate welding by setting pressure plates and ballast irons during the splicing of thin plates. The secondary straightening of the weld by the weld straightening equipment can make the stress release of the weld more uniform and faster. At the same time, the improved welding method when assembling reinforcing materials can significantly improve the flatness of the plate. Due to the improvement of each step of the thin plate construction process, only a small flame is needed for the fire straightening of the fillet weld to reduce the impact on the performance and quality of the plate.

[0030] Based on the above reasons, this invention can be widely promoted in the field of thin plate construction. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the thin plate splicing of the present invention.

[0033] Figure 2 This is a schematic diagram of the arrangement of the pressure plate and ballast iron in this invention.

[0034] Figure 3 This is a schematic diagram of the secondary leveling of the plate using a weld seam leveling device according to the present invention.

[0035] Figure 4 This is a schematic diagram of the welding process for the reinforcing material of the present invention.

[0036] Figure 5 This is a schematic diagram of the back beam installation of the present invention.

[0037] Figure 6 This is a schematic diagram of the vertical tray structure of the present invention.

[0038] In the diagram: 1. Thin plate; 2. Weld; 3. Iron platform; 4. Ballast iron; 5. Pressure plate; 6. Weld straightening equipment; 7. Reinforcing material; 8. Back beam; 9. Vertical pallet; 91. Base plate; 92. Vertical plate; 93. Accommodation space; 10. Plate; 11. Plate frame. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0046] Example 1

[0047] like Figure 1-6 As shown, the present invention provides a thin plate construction process, which specifically includes the following steps:

[0048] S1, Thin Plate Panel

[0049] Before the thin plates are assembled, ballast irons 4 are set on both sides of the weld along the length of the weld 2, and pressure plates 5 are set along the edge of the thin plate 1 to fix the thin plate 1.

[0050] Compared with the method of welding plates in a free state, setting pressure plate 5 when splicing plates can ensure that the plates will not move during the welding process. At the same time, setting ballast iron 4 on both sides of weld 2 can ensure that the stress generated by the plates during the welding process will not be released along both sides of the weld, resulting in the flatness of the weld sides exceeding the tolerance.

[0051] S2, Weld stress relief

[0052] After the thin plates are spliced ​​together, plate 10 is obtained. After removing the ballast iron 4 and the pressure plate 5, the weld seam 2 on plate 10 is straightened for the second time using weld seam straightening equipment 6 to eliminate the internal stress in weld seam 2.

[0053] Compared with the existing technology of using wooden or iron hammers to hammer the weld to release stress, using equipment to roll and press the weld to release stress can make the stress release more uniform, the release effect better, the speed faster, and save a lot of labor costs.

[0054] S3, Welding of reinforcing materials

[0055] After secondary leveling, pressure plates 5 are placed on the edges of the plate 10, and several parallel reinforcing members 7 are evenly arranged on one side surface of the plate 10 along the width direction of the plate 10 (the number of reinforcing members 7 is specified by the designer according to the structural form of the plate 10). Then, the reinforcing members 7 are welded to the plate 10 in the following order to obtain the plate frame 11:

[0056] (1) Weld the reinforcing member I located at the center of plate 10; when the number of reinforcing members is even, it includes two reinforcing members I; when the number of reinforcing members is odd, it includes one reinforcing member I.

[0057] (2) Weld the two reinforcing members located at both ends of the plate 10 in sequence: reinforcing member II and reinforcing member III;

[0058] (3) Using the reinforcing material I as the axis of symmetry, divide all the reinforcing materials into two regions: the left half and the right half;

[0059] If stiffener III is located in the left half, the remaining stiffeners are welded by alternately selecting one from the right half to the left half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area.

[0060] If stiffener III is located in the right half, the remaining stiffeners are welded by alternately selecting one from the left half to the right half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area.

[0061] Specifically, taking the welding of 5 reinforcing members 7 onto plate 10 as an example, the welding method provided by this invention is adopted, and the welding sequence is as follows: Figure 4 As shown, the sequence is 3, 5, 1, 4, 2. However, the existing technology usually adopts a symmetrical welding method after overall assembly, with the welding sequence being 4, 3, 1, 2, 5. The "skip-type" welding and slow cooling method adopted in this invention can make the heat of the weld change from concentrated to dispersed, preventing plate deformation caused by stress concentration, greatly reducing the lean deformation of the fillet weld, and greatly improving the flatness of the plate.

[0062] If 7 reinforcing members 7 are to be welded, then according to the welding method provided by this invention, the welding sequence is 3, 5, 7, 1, 6, 4, 2;

[0063] S4. Fire straightening of lean muscle deformation in fillet welds.

[0064] Flip the plate frame 11 and perform a small-fire back-heating on the non-structural surface of the corner weld of the reinforcing member 7, with the temperature controlled below 300℃.

[0065] Since the construction process provided by this invention has good flatness control in the aforementioned stages, it is not necessary to use high heat for back-firing in this step; low heat is sufficient, which can effectively reduce the impact on the performance and quality of the board.

[0066] Furthermore, in step S1, the thin plate splicing is carried out on a flat and rigid iron platform 3, and the flatness of the iron platform 3 is no greater than 2 mm. 2 .

[0067] Furthermore, in step S1, during the thin plate splicing process, the welding process requirements must be strictly followed. For welds that are longer (greater than 2 meters), the segmented back welding method or the center-segmented back welding method should be used, and the use of large-sized welding rods or excessive welding parameters should be avoided.

[0068] Furthermore, in step S2, a three-core roller is used to roll the weld 2 to eliminate the internal stress in the weld 2.

[0069] Furthermore, in step S3, after each welding, the weld between the reinforcing member 7 and the plate 10 is cooled slowly before welding the next reinforcing member 7; when welding each reinforcing member 7, ballast irons 4 are respectively set on both sides of the reinforcing member 7 to reduce the welding deformation of the plate 10.

[0070] Furthermore, it also includes:

[0071] S5, Back Beam Installation

[0072] On one side of the plate frame 11, where the reinforcing member 7 is provided, a back beam 8 is installed along the length of the plate frame 11. The back beam 8 has mounting holes corresponding to the positions of each reinforcing member 7. Each reinforcing member 7 is embedded in the corresponding mounting hole. The back beam 8 is welded and fixed to the surface of the plate frame 11.

[0073] Installing a back beam 8 on the plate frame can further ensure the flatness of the plate frame joint, reduce the deformation caused by hoisting the plate frame 11 and long-term multi-layer stacking, and facilitate smooth installation.

[0074] Furthermore, it also includes:

[0075] S6, Component Transfer

[0076] A vertical pallet 9 is manufactured, which includes a base plate 91. Several vertical plates 92 are installed on the base plate 91 at intervals. The vertical plates 92 are parallel to each other, and a receiving space 93 for placing the pallet frame is formed between two adjacent vertical plates 92. The pallet frame 11 with the back beam 8 is placed in the receiving space 93 on the vertical pallet 9 for transportation.

[0077] Compared with the layer-by-layer stacking and transfer of pallets 11 used in the prior art, the use of vertical pallets 9 for transfer can avoid deformation of thin plates caused by long-term stacking and multi-layer stacking.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thin-plate construction process, characterized in that, Specifically, the following steps are included: S1, Thin Plate Panel Before splicing thin plates, ballast irons are set on both sides of the weld along the length of the weld, and pressure plates are set along the edge of the thin plates to fix the thin plates. S2, Weld stress relief After the thin plates are spliced ​​together, the ballast iron and pressure plate are removed. Then, the weld seams on the plates are straightened a second time using a weld seam straightening device to eliminate the internal stress in the weld seams. S3, Welding of reinforcing materials After secondary leveling, pressure plates are placed on the edges of the sheet, and several parallel reinforcing members are evenly arranged along the width of the sheet on one side surface. Then, the reinforcing members are welded to the sheet in the following order to obtain the sheet frame: (1) Weld the reinforcing member I located at the center of the plate; (2) Weld the two reinforcing members located at both ends of the plate in sequence: reinforcing member II and reinforcing member III; (3) Using the reinforcing member I as the axis of symmetry, divide all the reinforcing members into two regions: the left half and the right half; If stiffener III is located in the left half, the remaining stiffeners are welded by alternately selecting one from the right half to the left half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area. If stiffener III is located in the right half, the remaining stiffeners are welded by alternately selecting one from the left half to the right half, and each time the stiffener selected is the one that is farther away from the previous stiffener in the area. In step S3, after each welding, the weld between the reinforcing member and the plate is slowly cooled before welding the next reinforcing member. When welding each reinforcing member, ballast irons are placed on both sides of the reinforcing member to reduce the welding deformation of the plate. The skip welding method and slow cooling can make the heat of the weld change from concentrated to dispersed, preventing plate deformation caused by stress concentration. S4. Fire straightening of lean muscle deformation in fillet welds. Flip the plate frame and perform a small-scale back-heating of the non-structural surface of the fillet weld of the reinforcing material, keeping the temperature below 300℃.

2. The thin plate construction process according to claim 1, characterized in that, Step S1, thin plate splicing, is carried out on a flat iron platform with a flatness of no more than 2 mm. 2 .

3. The thin-plate construction process according to claim 1, characterized in that, Step S2 uses a three-core roller to roll the weld to eliminate internal stress in the weld.

4. The thin plate construction process according to claim 1, characterized in that, Also includes: S5, Back Beam Installation On one side of the plate frame where the reinforcing member is set, a back beam is installed along the length of the plate frame. The back beam has mounting holes corresponding to the positions of each reinforcing member. Each reinforcing member is embedded in the corresponding mounting hole, and the back beam is welded and fixed to the surface of the plate frame.

5. The thin plate construction process according to claim 4, characterized in that, Also includes: S6, Component Transfer A vertical pallet is manufactured, which includes a base plate on which several uprights are installed at intervals. The uprights are parallel to each other, and the space between two adjacent uprights is used to accommodate the pallet frame. The pallet frame with the back beam is placed in the space on the vertical pallet for transportation.

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