Titanium alloy electrode block pressing die

Abstract

The application provides a titanium alloy electrode block pressing die, which comprises a base plate, a pressure-resistant die seat, a wear-resistant lining plate, a bottom die, a punch and a punch body, the wear-resistant lining plate is sleeved in the pressure-resistant die seat, a rectangular die cavity is arranged in the center of the wear-resistant lining plate, a flange shoulder is arranged at the upper end of the wear-resistant lining plate, the flange shoulder is embedded in the flange groove, the bottom die comprises a base part and a gauge part, the base part is fixed with the base plate, the gauge part is integrally connected with the base part and arranged in the rectangular die cavity, the bottom die is used for cooperating with the punch up and down to form a predetermined blank shape, the punch body is fixed at the lower end of the hydraulic machine movable slide, the punch is fixed at the lower end of the punch body, the lower surface of the punch is a precision plane, and the punch cross section size is matched with the rectangular die cavity, the scheme changes the convex angle of the bottom die and the combination form of the cast electrode block, realizes that a punch presses and forms various single electrode blocks in the cross section, further melts different diameter specification rod products, expands the application range of the die, reduces the use amount of the die for forming different products, and reduces the die replacement and maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of titanium and titanium alloy forming technology, in particular to a titanium alloy electrode block pressing die. BACKGROUND

[0002] The most commonly used preparation method of titanium and titanium alloy is vacuum self-consumption arc furnace smelting method, which uses a hydraulic machine to compress the dispersed granular mixture in the die cavity into an electrode block. In the traditional production method, a single electrode block is usually a 1 / 2 cylinder, two 1 / 2 cylinders are combined into a section, and multiple sections are combined to form a finished titanium and titanium alloy cylindrical rod.

[0003] 1 / 2 cylinder production: the titanium alloy electrode block of 1 / 2 cylinder is pressed, the traditional extrusion die includes a punch, a die and a frame die, the die is installed in the hydraulic machine, the bottom of the hydraulic machine is provided with a base plate, the base plate is provided with an embedded groove for clamping the die and the frame die; the die is matched and installed in the frame die, the die is provided with a cavity for accommodating raw materials in the middle, the punch is fixed on the slider of the hydraulic machine, the slider of the hydraulic machine can drive the punch to move downward, the punch is pressed into the die cavity, and the raw materials are extruded into a titanium alloy electrode block with a certain shape and density by the huge pressure of the hydraulic machine.

[0004] The existing titanium alloy rod production has the following defects:

[0005] 1) The shape of the bottom die and the punch restricts the material, thereby forming an electrode block with a specific shape and specification. One electrode block corresponds to one diameter of rod. The die used to produce a single electrode block is a special die, that is, one die can only produce one diameter of titanium alloy rod, and the utilization rate of the die is low.

[0006] 2) The existing forming die, the diameter of the rod is the circumscribed circle of the end face (2HxL) of the cast electrode block group, and the length of the rod is the remaining length in the axial direction (13W) of the cast electrode block group after melting and filling. The existing forming die needs to prepare multiple sets of different section liners, different section punches and multiple different scale bases for producing different electrode blocks. One set of die corresponds to the forming of one electrode block, the utilization rate of the die is low, and the production cost is high.

[0007] 3) The density of the formed electrode block is proportional to the face pressure of the punch pressing surface (WxL), the larger the pressing section area, the greater the pressing force required by the hydraulic machine, the titanium and titanium alloy mixture needs to overcome a larger die expansion side pressure, and the compressed material has high hardness. Therefore, the larger the rod, the greater the damage to the die cavity during the pressing process, and the higher the resistance requirement of the die. SUMMARY

[0008] The technical problem to be solved by the present application is how to improve the utilization rate of the titanium alloy electrode block pressing die.

[0009] The present application solves the problem, the technical scheme is:

[0010] A titanium alloy electrode block pressing die, comprising:

[0011] A base plate is fixed on the workbench of a hydraulic machine, and a positioning groove is arranged on the upper surface of the base plate;

[0012] A compression-resistant die seat is provided with a cylindrical through hole, which is concentrically arranged with the positioning groove, and a flange groove is arranged at the top end of the compression-resistant die seat; the lower part of the outer wall of the compression-resistant die seat is thickened, and the upper part of the outer wall is thin-walled; the thickened part is tapered to the thin-walled part;

[0013] A wear-resistant lining plate is sleeved in the compression-resistant die seat, and a rectangular die cavity is arranged in the center of the wear-resistant lining plate; a flange shoulder is arranged at the upper end of the wear-resistant lining plate, and the flange shoulder is embedded in the flange groove;

[0014] A bottom die comprises a base part and a regular-shaped part; the base part is fixed with the base plate, and the regular-shaped part is integrally connected with the base part and arranged in the rectangular die cavity; the bottom die is used for cooperating with the punch up and down to form a predetermined blank shape;

[0015] The punch and the punch body are fixed at the lower end of the hydraulic machine, and the punch is fixed at the lower end of the punch body; the lower surface of the punch is a precision plane, and the cross-sectional size of the punch matches the rectangular die cavity.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] By changing the convex angle of the bottom die and the combination form of the cast electrode block, a punch pressing cross-section forming multiple single electrode blocks is realized, different diameter specification rod products are melted, the application range of the die is expanded, the use amount of the die for forming different products is reduced, and the maintenance cost of the die is reduced.

[0018] As a preferred further technical scheme of the above structure is:

[0019] The wear-resistant lining plate is composed of two symmetrical long lining plates and two symmetrical short lining plates; and the split line of the long lining plate and the short lining plate is based on the diagonal line of the rectangular die cavity.

[0020] The beneficial effects obtained from the above features are that the split design of the wear-resistant lining plate facilitates installation and facilitates disassembly and assembly of different electrode blocks; and the split line position design has the advantage that the inclined surfaces of the lining plates constrain each other to avoid displacement of the lining plates to the center.

[0021] The regular-shaped part of the bottom die is provided with a corresponding convex angle structure; the convex angle is a wedge shape; the bottom surface of the wedge shape is integrally connected with the base part; the outer side surface of the wedge shape is perpendicular to the bottom surface; the inner side surface of the wedge shape is an inclined surface and is a circular arc curved wall; the base part is a flange piece which is widened and lengthened based on the lower end of the regular-shaped part; the flange piece is embedded in the positioning groove and bolted with the base plate.

[0022] The beneficial effects obtained from the above features: the bottom die structure of this embodiment is simple, high in strength and easy to produce.

[0023] Specifically, the bottom die comprises three types of first, second and third regular-shaped dies. The first regular-shaped die comprises two symmetrically arranged convex corners, the arc-shaped curved walls of the two convex corners are oppositely arranged and connected, the arc-shaped curved walls of the two convex corners combine to form a semicircle, and the outer side walls of the two convex corners are in close contact with the opposite two side walls of the long direction of the rectangular die cavity. The second regular-shaped die comprises one convex corner, the outer side wall of the convex corner is in close contact with one side wall of the rectangular die cavity, the lower end of the arc-shaped curved wall extends to abut against the opposite side wall of the rectangular die cavity, and the arc-shaped curved wall is a quarter of a circle. The third regular-shaped die comprises two symmetrically arranged convex corners, the arc-shaped curved walls of the two convex corners are oppositely arranged and connected, the arc-shaped curved walls of the two convex corners combine to form a semicircle, and the outer side walls of the two convex corners are in close contact with the opposite two side walls of the short direction of the rectangular die cavity.

[0024] The beneficial effects obtained from the above features: the three types of bottom die structures provided in this example are suitable for the same die cavity section, can be formed with the same compression mold base and wear-resistant lining plate, and the three types of bottom dies can be used to make different electrode blocks and different electrode rods by combination. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall schematic diagram of the electrode block forming die provided by the present application;

[0026] Figure 2 The wear-resistant lining plate structure of the present application;

[0027] Figure 3 The embodiment schematic diagram of the wear-resistant lining plate of the present application;

[0028] Figure 4 The first regular-shaped die structure schematic diagram of the present application;

[0029] Figure 5 The structure diagram of the 1 / 2 large-size electrode block corresponding to the first regular-shaped die of the present application;

[0030] Figure 6 The rod material embodiment using 1 / 2 large-size electrode blocks for combination;

[0031] Figure 7 The second regular-shaped die structure schematic diagram of the present application;

[0032] Figure 8 The structure diagram of the 1 / 4 electrode block corresponding to the second regular-shaped die of the present application;

[0033] Figure 9 The rod material embodiment using 1 / 4 electrode blocks for combination;

[0034] Figure 10 Figure 3 is a schematic diagram of a third rule-shaped die structure of the present application;

[0035] Figure 11 Figure 4 is a structure diagram of a 1 / 2 small-size electrode block corresponding to the third rule-shaped die of the present application;

[0036] Figure 12 Figure 5 is a bar material embodiment using a 1 / 2 small-size electrode block combination.

[0037] Legend: 1, compression-resistant die holder; 2, wear-resistant lining plate; 3, bottom die; 4, backing plate; 5, punch; 6, punch body; 201, outer wall of wear-resistant lining plate; 202, rectangular die cavity; 203, flange shoulder; 204, long lining plate; 205, short lining plate; 206, split line; 301, convex corner; 3011, wedge-shaped bottom surface; 3012, wedge-shaped outer side surface; 3013, wedge-shaped inner side surface; 302, base portion. DETAILED DESCRIPTION

[0038] To make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with embodiments and drawings. Herein, the illustrative embodiments of the present application and the description thereof are used to explain the present application, but not as a limitation of the present application.

[0039] The present application is to improve the applicability of the die, realize that a set of die can press out electrode blocks of multiple specifications, so as to produce multiple titanium alloy bars; at the same time, the full load is used when pressing different specifications of electrode blocks, under the premise that the size and weight of the cast electrode block group are certain, the weight of a single electrode block is increased, and the number of electrode block group welding is reduced.

[0040] The present application provides a scheme for improving the application range of titanium and titanium alloy electrode block pressing die, the main structure of the die includes a compression-resistant die holder 1, a wear-resistant lining plate 2, a forming bottom die 3, a punch 5, a punch body 6, etc., and the following will be described in combination with the accompanying Figure 1 to the accompanying Figure 9 The present application is to improve the applicability of the die, realize that a set of die can press out electrode blocks of multiple specifications, so as to produce multiple titanium alloy bars; at the same time, the full load is used when pressing different specifications of electrode blocks, under the premise that the size and weight of the cast electrode block group are certain, the weight of a single electrode block is increased, and the number of electrode block group welding is reduced.

[0041] A titanium alloy electrode block pressing die, comprising:

[0042] The backing plate 4 is fixed on the workbench of the hydraulic machine, and a positioning groove is arranged on the upper surface of the backing plate 4. The backing plate 4 is made of thick plate, the positioning groove is embedded in the bottom die 3 in shape and size, and threaded holes are processed on the backing plate 4 for fixing the bottom die 3.

[0043] The compression-resistant die holder 1 is provided with a cylindrical through hole, and the cylindrical through hole is concentrically arranged with the positioning groove. The top end of the compression-resistant die holder 1 is provided with a flange groove, the lower part of the outer wall of the compression-resistant die holder 1 is thickened, the upper part of the outer wall is thin-walled, and the thickened part to the thin-walled part is tapered. The compression-resistant die holder 1 is integrally cast to bear the pressing load of the punch 5.

[0044] The wear-resistant lining plate 2 is sleeved in the compression-resistant die holder 1, and the center of the wear-resistant lining plate 2 is provided with a rectangular die cavity 202, and the upper end of the wear-resistant lining plate 2 is provided with a flange shoulder 203 which is embedded in the flange groove.

[0045] The bottom die 3 includes a base part 302 and a gauge part, the base part 302 is fixed with the base plate 4, the gauge part is integrally connected with the base part 302 and is arranged in the rectangular die cavity 202, and the bottom die 3 is used for cooperating with the punch 5 up and down to form a predetermined blank shape.

[0046] The punch 5 and the punch body 6, the punch body 6 is fixed to the lower end of the hydraulic machine movable slide, the punch 5 is fixed to the lower end of the punch body 6, the lower surface of the punch 5 is a precision plane, and the sectional dimension of the punch 5 matches the rectangular die cavity 202. The punch 5 and the punch body 6 are made of high-strength alloy by forging, wherein the punch 5 is a rectangular block, the size of which is adapted to the rectangular die cavity 202 of the lining plate, the lower end of the punch body 6 is a cylindrical rectangular structure, the upper end is a rectangular thick plate structure, and the two are connected through a taper surface. The punch 5 and the punch body 6 are connected through a bolt key.

[0047] The base plate 4 is fixed on the hydraulic machine workbench, the base plate 4 serves as a positioning component of the die, and the center point of the die is determined through a positioning groove. The hydraulic machine workbench is provided with a positioning mechanism for adjusting and fixing the base plate 4. The base part 302 of the bottom die 3 is fixed in the positioning groove and can be further fixed through a bolt. The wear-resistant lining plate 2 is sleeved in the compression-resistant die holder 1, and the load capacity is strengthened through the compression-resistant die holder 1. The flange groove at the top and the flange shoulder 203 are matched, and the two can move together, and the compression-resistant die holder 1 and the wear-resistant lining plate 2 can be further fixed through the flange bolt. The rectangular die cavity 202 of the wear-resistant lining plate 2 is sleeved on the gauge part of the bottom die 3, and the compression-resistant die holder 1 is placed on the base plate 4. The gauge part makes the lower part of the rectangular die cavity 202 form the shape of the outer surface of the electrode block. The rectangular die cavity 202 is filled with a discrete mixed material. The punch body 6 descends with the hydraulic machine movable slide, and the punch 5 is used for extruding the discrete mixed material to form a single electrode block.

[0048] Referring to Figure 2 , Figure 3The outer wall 201 of the wear-resistant lining plate of the application is cylindrical, the outer diameter is matched with the cylindrical through hole of the compression mold base 1, the center of the wear-resistant lining plate 2 is a rectangular mold cavity 202, the inside of the rectangular mold cavity 202 is provided with a discrete mixed material for casting an electrode block, the top of the discrete mixed material is the cross section of a bar, and the rectangular mold cavity 202 forms a rectangular cross section. Alternatively, the wear-resistant lining plate 2 is combined by two relatively symmetrical long lining plates 204 and two relatively symmetrical short lining plates 205, and the split line 206 of the long lining plate 204 and the short lining plate 205 is based on the diagonal of the rectangular mold cavity 202. The outer walls 201 of the four wear-resistant lining plates are coaxial and straight-diameter arc-shaped with the cylindrical through hole of the compression mold base 1, the long lining plates 204 and the short lining plates 205 are surrounded to form a rectangular hollow cavity, the long side of the rectangular mold cavity 202 is L, the short side is W, the upper end of the lining plate is provided with a flange shoulder 203, and the flange shoulder 203 is provided with a bolt hole for connecting the compression mold base 1.

[0049] The bottom mold 3 of the application is a replaceable high-strength forging, and the regular-shaped part for electrode block forming is provided with a corresponding convex corner 301 structure. The convex corner 301 is wedge-shaped, the bottom surface 3011 of the wedge-shaped is fixedly connected with the base part 302, the outer side surface 3012 of the wedge-shaped is perpendicular to the bottom surface, the inner side surface 3013 of the wedge-shaped is a bevel and a circular-arc curved wall, and the base part 302 is a flange plate based on the widening and lengthening of the lower end of the regular-shaped part, which is embedded in the positioning groove and is bolted with the backing plate 4.

[0050] Three different bottom molds 3 are designed for replacement in the scheme:

[0051] The first regular-shaped mold includes two symmetrically arranged convex corners 301, the circular-arc curved walls of the two convex corners 301 are oppositely arranged and connected, and the circular-arc curved walls of the two convex corners 301 combine to form a semicircle. The outer side walls of the two convex corners 301 are tightly connected with the opposite two side walls of the long direction of the rectangular mold cavity 202, that is, the two short lining plates 205 are tightly abutted.

[0052] The second regular-shaped mold includes one convex corner 301, the outer side wall of the convex corner 301 is tightly connected with one side wall of the rectangular mold cavity 202, and the lower end of the circular-arc curved wall extends to abut against the opposite side wall of the rectangular mold cavity 202. The circular-arc curved wall is a quarter of a circle.

[0053] The third regular-shaped mold includes two symmetrically arranged convex corners 301, the circular-arc curved walls of the two convex corners 301 are oppositely arranged and connected, and the circular-arc curved walls of the two convex corners 301 combine to form a semicircle. The outer side walls of the two convex corners 301 are tightly connected with the opposite two side walls of the short direction of the rectangular mold cavity 202, that is, the two long lining plates 204 are tightly abutted.

[0054] The first rule-shaped die is used for manufacturing 1 / 2 large-size electrode blocks, and is obtained by cooperating a pressure-resistant die holder 1, a wear-resistant lining plate 2, a large-size double-convex angle 301 bottom die 3 (i.e. the first rule-shaped die) and a punch 5. The upper end of the obtained single 1 / 2 large-size electrode block is a rectangular plane, and the lower end is a semicircle. The specification is as follows: Figure 4 The length is L, the width is W, and the height is H. Referring to Figure 7 The welded electrode block group is obtained by welding. The sum of the W is the length of the electrode rod, the L is the width of the electrode rod, and the 2H is the height of the electrode rod.

[0055] The second rule-shaped die is used for manufacturing 1 / 4 electrode blocks. The upper end of the obtained single 1 / 4 electrode block is a rectangular plane, and the lower end is a quarter circle. The specification is as follows: Figure 5 The length of the electrode block is W, the width is W, and the height is H. Referring to Figure 8 The welded electrode block group is obtained by welding. The sum of the L is the length of the electrode rod, the 2W is the width of the electrode rod, and the 2H is the height of the electrode rod.

[0056] The third rule-shaped die is used for manufacturing 1 / 2 small-size electrode blocks. The upper end of the obtained single 1 / 2 small-size electrode block is a rectangular plane, and the lower end is a semicircle. The diameter of the semicircle is equal to the length of the short side of the rectangular die cavity 202. The specification is as follows: Figure 6 The length is L, the width is W, and the height is H. Referring to Figure 9 The welded electrode block group is obtained by welding. The sum of the L is the length of the electrode rod, the W is the width of the electrode rod, and the 2H is the height of the electrode rod.

[0057] The scheme provided by the present application is used for forming three different electrode blocks. In the prior art, if the same three electrode blocks are formed, three sets of wear-resistant lining plates 2 with different sections, three sets of punches 5 with different sections and three sets of different bottom dies 3 are needed. The whole set of molds is replaced when used. In the present application, different bottom dies 3 are used to form multiple electrode blocks under the condition of the same die cavity section. The mold of the present application includes a set of punches 5, a set of wear-resistant lining plates 2, a pressure-resistant die holder 1 and a set of multiple bottom dies 3. The pressure-resistant die holder 1 and the wear-resistant lining plate 2 in the pressing mold can be used all the time. The pressing section (WxL) is not changed, and full-load pressing is completed by only replacing different bottom dies 3 to complete the forming task of electrode blocks with different specifications.

[0058] The application prolongs the length of single electrode block by using 1 / 2 small size electrode block, reduces the number of single electrode block required by small size casting electrode block group, and reduces the welding amount of electrode block combination; the 1 / 4 electrode block is used to form large size rod, effectively improves the pressing efficiency, a set of mold forms multiple rods, reduces the resource time waste caused by the frequent replacement of inner liner plate of multiple specifications products; improves the mold applicability, realizes the use of multiple specifications of a set of mold; changes the form of group welding of casting electrode block, and further improves the size range of smelting rod after mold forming. The scheme expands the use range of a set of mold, reduces the mold replacement and maintenance cost, improves the product production efficiency, and greatly reduces the cost of mold.

[0059] The above description is only the preferred and feasible embodiment of the present application, and does not limit the scope of the present application, and any equivalent changes made by applying the content of the specification and drawings of the present application are included in the scope of the present application.

Claims

1. A titanium alloy electrode block pressing die characterized by: The utility model relates to a hydraulic die cushion, including: a base plate (4) fixed on the workbench of a hydraulic machine, the upper surface of which is provided with a positioning groove; a compression-resistant die holder (1) provided with a cylindrical through hole concentric with the positioning groove, the top end of the compression-resistant die holder (1) being provided with a flange groove; the lower part of the outer wall of the compression-resistant die holder (1) being thickened, the upper part of the outer wall being thin, and the thickened part tapering to the thin part; a wear-resistant lining plate (2) sleeved in the compression-resistant die holder (1), the center of which is provided with a rectangular die cavity (202), the upper end of which is provided with a flange shoulder (203) embedded in the flange groove; a bottom die (3) including a base part (302) and a gauge part, the gauge part being provided with a corresponding convex corner (301) structure, the convex corner (301) being wedge-shaped, the bottom surface (3011) of the wedge being fixedly connected to the base part (302), the outer side surface (3012) of the wedge being perpendicular to the bottom surface, and the inner side surface (3013) of the wedge being a bevel and a circular-arc curved wall, the base part (302) being a flange plate widened and lengthened based on the lower end of the gauge part, the base part (302) being embedded in the positioning groove and bolted to the base plate (4); the base part (302) being fixed to the base plate (4), the gauge part being fixedly connected to the base part (302) and arranged in the rectangular die cavity (202), the bottom die (3) being used for cooperating with a punch (5) up and down to form a predetermined blank shape; the bottom die (3) including three types of first, second and third gauge dies, the first gauge die including a gauge part including two symmetrically arranged convex corners (301), the circular-arc curved walls of the two convex corners (301) being oppositely arranged and connected, and the circular-arc curved walls of the two convex corners (301) combining to form a semicircle, the outer side walls of the two convex corners (301) being tightly connected to the opposite two side walls of the rectangular die cavity (202) in the length direction; the second gauge die including a gauge part including one convex corner (301), the outer side wall of the convex corner (301) being tightly connected to one side wall of the rectangular die cavity (202), and the lower end of the circular-arc curved wall extending to abut against the opposite side wall of the rectangular die cavity (202), the circular-arc curved wall being a quarter of a circle; the third gauge die including a gauge part including two symmetrically arranged convex corners (301), the circular-arc curved walls of the two convex corners (301) being oppositely arranged and connected, and the circular-arc curved walls of the two convex corners (301) combining to form a semicircle, the outer side walls of the two convex corners (301) being tightly connected to the opposite two side walls of the rectangular die cavity (202) in the width direction; a punch (5) and a punch body (6), the punch body (6) being fixed to the lower end of a hydraulic machine movable slide, the punch (5) being fixed to the lower end of the punch body (6), the lower surface of the punch (5) being a precision plane, and the cross-sectional dimension of the punch (5) matching the rectangular die cavity (202).

2. The titanium alloy electrode block press die of claim 1, wherein: The wear-resistant lining plate (2) is composed of two symmetrically arranged long lining plates (204) and two symmetrically arranged short lining plates (205), and the division line (206) between the long lining plate (204) and the short lining plate (205) is based on the diagonal line of the rectangular die cavity (202).

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