A ring segment-shaped metallurgical product shaping tooling mold and shaping method

Abstract

The present application belongs to the field of powder metallurgy, and relates to a ring piece-shaped metallurgical product shaping tooling mold and a shaping method. Only by driving the upper punch to perform a downward pressing operation, the ring piece to be shaped can be pushed to first pass through the shaping section of the shaping core rod to perform inner diameter shaping, and then be pressed tightly on the base by the upper punch. The operation is simple and fast, and realizes one-time passing of inner diameter and plane shaping. Compared with the traditional shaping process, the present application combines two processes into one, improves the production efficiency, and optimizes and improves the quality (inner diameter and flatness) of the ring piece-shaped metallurgical product. After the inner circle of the ring piece-shaped metallurgical product is shaped and corrected, the outer circle will also be shaped and corrected due to the correction and return of the inner circle. Therefore, the present application can realize one-time downward pressing operation, complete the synchronous shaping of the inner and outer diameters and the end face flatness of the ring piece-shaped metallurgical product, and make the outer diameter, inner diameter and end face flatness of the ring piece-shaped metallurgical product reach the correction effect at the same time, thereby having good popularization value.

Description

Technical Field

[0001] This invention belongs to the field of powder metallurgy and relates to the shaping and correction technology of ring-shaped metallurgical products, and in particular to a shaping tooling mold and shaping method for ring-shaped metallurgical products. Background Technology

[0002] Metallurgical products are industrial materials and components made from metals or alloys through processes such as smelting, processing, and forming. Ring-shaped metallurgical products are commonly used industrial parts. Taking tungsten alloy fragment rings as an example, they are a major product in modern military applications and warheads, with a large annual demand. However, quality problems in the manufacturing process of tungsten alloy fragment rings, such as the inability to guarantee the accuracy of the inner diameter, roundness, and flatness of the ring end face, often lead to the inability to properly assemble and use the tungsten alloy fragments, requiring rework or direct discarding. This has become a major challenge for tungsten product manufacturers.

[0003] Therefore, how to improve the finished product quality of tungsten alloy fragment rings and other ring-shaped metallurgical products has become a technical problem that urgently needs to be solved in this invention. Summary of the Invention

[0004] The purpose of this invention is to provide a shaping tooling and shaping method for ring-shaped metallurgical products to solve the problems existing in the prior art. It can shape and correct the prepared ring-shaped metallurgical products to ensure the accuracy of inner and outer diameter dimensions, roundness, and flatness of the two end faces of the ring, thereby improving the production efficiency and finished product quality of ring-shaped metallurgical products.

[0005] To achieve the above objectives, the present invention provides the following solution: On one hand, the present invention provides a forming tooling mold for ring-shaped metallurgical products, including an upper punch, a forming core rod, and a base, wherein: The shaping core rod is provided with an insertion guide section and a shaping section from its axial top to its axial bottom. The insertion guide section is used for the ring piece to be sleeved onto the shaping section. The outer diameter of the shaping section is equal to the inner diameter of the ring piece. The axial bottom of the shaping core rod is connected to the base and is perpendicular to the base. The upper surface of the base is used to support the lower end face of the ring piece; The upper punch has an inner cavity for sliding through the outside of the shaping core rod, and the lower end face of the upper punch is used to press the upper end face of the ring piece; the upper punch can push the ring piece through the shaping section under the action of downward pressure and press the ring piece tightly on the base.

[0006] In some embodiments, the shaping section is a cylindrical section; the insertion guide section is a tapered section, the outer diameter of the large end of the tapered section is not greater than the outer diameter of the cylindrical section, and the large end of the tapered section and the top of the cylindrical section are smoothly connected by an arc surface structure.

[0007] In some embodiments, the axial bottom of the shaping core rod is further provided with a clearance section, which is located at the end of the shaping section away from the insertion guide section; the outer wall of the clearance section is arranged to gradually narrow in diameter along the direction away from the shaping section.

[0008] In some embodiments, the large end and the small end of the clearance section are smoothly connected by an outwardly convex arc surface; the outer diameter of the large end of the clearance section is not greater than the outer diameter of the cylindrical section, and the large end of the clearance section is smoothly connected to the bottom of the cylindrical section.

[0009] In some embodiments, the bottom end of the clearance section of the shaping core rod is provided with an outward protruding insert, and the base is provided with a positioning slot that is adapted to the insertion of the outward protruding insert. The shaping core rod is detachably inserted into the base through the outward protruding insert. Alternatively, a positioning slot is provided at the bottom of the clearance section of the shaping core rod, and an external protruding plug is provided on the upper surface of the base to be compatible with the positioning slot. The shaping core rod can be detachably inserted into the base through the positioning slot.

[0010] In some embodiments, the protruding insert is a cylindrical insert or a prismatic insert.

[0011] In some embodiments, after the shaping core rod is inserted into the base, the bottom end face of the clearance section of the shaping core rod is in close contact with the upper surface of the base.

[0012] In some embodiments, the shaping core rod is a one-piece molded core rod, and a through hole coaxial with the one-piece molded core rod is formed inside the core rod; the shaping core rod is coaxially arranged with the base.

[0013] In some embodiments, the base is a circular base or a polygonal base.

[0014] In some embodiments, the upper punch is a T-shaped punch, and the inner cavity is a cylindrical inner cavity that extends through both axial ends of the T-shaped punch, with the cylindrical inner cavity having a clearance fit with the forming section.

[0015] In some embodiments, the lower end face of the upper punch is an annular end face, and the diameter of the annular end face is not less than the diameter of the annular plate.

[0016] On the other hand, the present invention also proposes a method for shaping ring-shaped metallurgical products based on the ring-shaped metallurgical product shaping tooling mold described above, comprising: The ring piece to be shaped is coaxially inserted into the insertion guide section of the shaping core rod; The upper punch is pressed down by the downward drive to push the ring piece to be shaped through the shaping section until the ring piece to be shaped is pressed firmly onto the base.

[0017] The present invention achieves the following technical effects compared to the prior art: The ring-shaped metallurgical product forming tooling of this invention has a novel and reasonable structure, comprising a base, a forming core rod, and an upper punch. In use, only a downward pressing operation of the upper punch is required to push the ring to be formed through the forming section of the forming core rod for inner diameter shaping, and then be pressed firmly onto the base by the upper punch. This operation is simple and quick, achieving inner diameter and flatness shaping in one step. Traditional processes involve two steps (first shaping the inner hole, then shaping the flatness), resulting in a long process flow and high labor costs. Compared to traditional forming processes, this invention combines two steps into one, improving production efficiency. Simultaneously, the quality (inner diameter and flatness) of the ring-shaped metallurgical product is optimized and improved. After the inner circle of the ring-shaped metallurgical product is shaped and corrected, its outer circle will also achieve roundness shaping due to the correction and return of the inner circle. Therefore, this invention can achieve simultaneous shaping of the inner and outer diameters and end face flatness of the ring-shaped metallurgical product in a single pressing operation, ensuring that the outer diameter, inner diameter, and end face flatness of the ring-shaped metallurgical product are simultaneously corrected, making it highly valuable for widespread application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of the ring-shaped metallurgical product shaping tooling mold disclosed in an embodiment of the present invention; Figure 2 This is a front view of the overall assembly structure of the ring-shaped metallurgical product shaping tooling mold disclosed in an embodiment of the present invention; Figure 3 This is an overall assembly sectional view of the ring-shaped metallurgical product shaping tooling mold disclosed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the forming core rod in the forming tooling mold for ring-shaped metallurgical products disclosed in an embodiment of the present invention; Figure 5 This is a front view of the shaping core rod in the shaping tooling mold for ring-shaped metallurgical products disclosed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the base structure in the ring-shaped metallurgical product shaping tooling mold disclosed in an embodiment of the present invention; Figure 7 This is a schematic diagram of the upper punch structure in the forming tooling mold for ring-shaped metallurgical products disclosed in an embodiment of the present invention; Figure 8 This is a schematic diagram of the tungsten alloy fragment ring disclosed in an embodiment of the present invention.

[0020] In the figure, the attached label is: 100 - Shaping tooling mold for ring-shaped metallurgical products; 1-Shaping core rod; 11-Insertion guide section; 12-Shaping section; 13-Avoidance section; 14-Outward protruding insert; 15-Through hole; 2-Base; 21-Upper surface; 22-Positioning slot; 3-Upper punch; 31-Inner cavity; 32-Lower end face; 33-Flange end; 4- Ring to be shaped. Detailed Implementation

[0021] 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. 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.

[0022] One of the objectives of this invention is to provide a shaping tooling mold for ring-shaped metallurgical products to solve the problems existing in the prior art. It can shape and correct the prepared ring-shaped metallurgical products to ensure the accuracy of inner and outer diameter dimensions, roundness, and flatness of the two end faces of the ring, thereby improving the production efficiency and finished product quality of ring-shaped metallurgical products.

[0023] Another objective of this invention is to provide a method for shaping ring-shaped metallurgical products based on the above-mentioned ring-shaped metallurgical product shaping tooling mold, so as to solve the problems existing in the prior art.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 like Figures 1-3As shown, this embodiment provides a forming tooling mold 100 for ring-shaped metallurgical products, including an upper punch 3, a forming core rod 1, and a base 2. The bottom axial direction of the forming core rod 1 is connected to and perpendicular to the base 2. The forming core rod 1 has a guide section 11 and a forming section 12 arranged sequentially from its top to its bottom axial direction. The maximum outer diameter of the guide section 11 is smaller than the inner diameter of the ring 4 to be formed, allowing the ring 4 to be smoothly inserted into the forming section 12. The outer diameter of the forming section 12 is equal to the inner diameter of the ring 4 to be formed, used to shape the inner circle of the ring 4 to ensure the roundness and dimensional accuracy of the inner circle. The upper surface 21 of the base 2 is a smooth plane, used to support the ring 4 to be formed and to contact and position it with the lower end face (bottom surface) of the ring 4. The upper punch 3 has a sliding sleeve for sliding through the forming core rod 1. The inner cavity 31 of the upper punch 3 has a smooth surface 32 at the lower end of the upper punch 3, which is used to contact and position the upper end (top surface) of the ring piece 4 to be shaped. The upper punch 3 can push the ring piece 4 to be shaped from top to bottom through the shaping section 12 under the linear driving action of the downward driving until the ring piece 4 to be shaped is pressed on the upper surface 21 of the base 2. When the ring piece 4 is pressed, the upper surface of the ring piece 4 to be shaped is in close contact with the lower end of the upper punch 3, and the lower surface of the ring piece 4 to be shaped is in close contact with the upper surface 21 of the base 2. Through the pressure holding action of the downward driving, the upper punch 3 and the base 2 can be used to axially clamp the two axial ends of the ring piece 4 to be shaped, thereby achieving the purpose of shaping and correcting the flatness of the two ends of the ring piece 4 to be shaped.

[0026] It should be noted that the ring piece 4 to be shaped is a uniformly thick annular sheet metallurgical part with a coaxial inner and outer circle. The inner circle diameter is the inner diameter of the ring piece 4 to be shaped, and the outer circle diameter is the outer diameter of the ring piece 4 to be shaped. The ring diameter of the ring piece 4 to be shaped is the difference between the outer circle radius and the inner circle radius. The ring piece 4 to be shaped that can be shaped and corrected using the above-mentioned annular sheet metallurgical product shaping tooling mold 100 includes, but is not limited to, annular sheet parts such as tungsten alloy fragment rings. Figure 8 The diagram shown is a schematic diagram of a tungsten alloy fragment ring.

[0027] Some feasible implementation methods, such as Figures 3-5 As shown, the shaping section 12 is a cylindrical section, that is, the shaping section 12 is cylindrical in shape as a whole, and its outer wall is a smooth and continuous cylindrical surface; the insertion guide section 11 is a conical section with a guiding function, the outer diameter of the large end of the conical section is not greater than the outer diameter of the aforementioned cylindrical section, and the large end of the conical section and the top of the cylindrical section are smoothly connected through an arc surface structure.

[0028] In some feasible implementations, the conical segment is preferably a frustum structure.

[0029] Some feasible implementation methods, such as Figures 3-5As shown, in order to facilitate demolding of the ring piece 4 after shaping and to avoid the bottom of the shaping core rod 1 affecting the shaped size of the ring piece 4 after shaping, it is preferable to provide a clearance section 13 at the bottom of the axial direction of the shaping core rod 1. The clearance section 13 is located at the end of the shaping section 12 away from the insertion guide section 11; the outer wall of the clearance section 13 is arranged to gradually narrow in diameter along the direction away from the shaping section 12.

[0030] Specifically, the clearance section 13 has an overall conical structure design. The clearance section 13 can adopt the same frustum structure as the guide section 11, or the large end and small end can be smoothly connected by an outwardly convex arc surface; for example... Figures 3-5 As shown, the structure uses an outwardly convex arc surface to connect the large end and the small end of the avoidance section 13. The avoidance section 13 formed by this structure is shorter and more rounded, which provides stronger support stability for the entire shaping core rod 1.

[0031] Further, refer to Figures 3-5 The outer diameter of the larger end of the clearance section 13 is not greater than the outer diameter of the cylindrical section, and the larger end of the clearance section 13 is smoothly connected to the bottom of the cylindrical section.

[0032] Based on the above design, the shaping core rod 1 is sequentially connected along the axial direction with an insertion guide section 11, a shaping section 12, and a clearance section 13. Both the insertion guide section 11 and the clearance section 13 have a reduced diameter design, moving away from each other. This results in the shaping core rod 1 having a shaft structure that is thicker in the middle and tapered at both ends. Furthermore, the shaping section 12 smoothly transitions towards the insertion guide section 11 and the clearance section 13 at both ends. The tapered structure of the insertion guide section 11 facilitates the fitting and positioning of the ring piece 4 to be shaped, while the reduced diameter design of the clearance section 13 facilitates demolding of the ring piece 4 after shaping.

[0033] In some feasible implementations, the shaping core rod 1 and the base 2 can be integrally formed or detachably assembled. For ease of ring demolding and mold maintenance, it is preferable that the shaping core rod 1 and the base 2 be detachably assembled. Specifically, a protruding insert 14 can be provided at the bottom end of the clearance section 13 of the shaping core rod 1, and a positioning slot 22 adapted to the protruding insert 14 is provided on the base 2. The shaping core rod 1 is inserted into the positioning slot of the base 2 through the protruding insert 14, achieving assembly and fixation on the base 2. Conversely, a positioning slot 22 can also be provided at the bottom end of the clearance section 13 of the shaping core rod 1, and a protruding insert 14 adapted to the positioning slot 22 can be provided on the upper surface 21 of the base 2. The shaping core rod 1 is inserted into the protruding insert 14 of the base 2 through the positioning slot 22, achieving assembly and fixation on the base 2.

[0034] like Figure 3As shown, this is the assembly structure in which the shaping core rod 1 is inserted into the positioning slot 22 of the base 2 via the protruding insert 14. The protruding insert 14 corresponds one-to-one with the positioning slot 22. The protruding insert 14 can be set as a cylindrical insert or a prism-shaped insert. The shape of the prism-shaped insert includes, but is not limited to, triangular prism, square prism, pentagonal prism, etc. The positioning slot 22 is adapted to the shape and size of the protruding insert 14. If the protruding insert 14 is a cylindrical insert, then the positioning slot 22 is a cylindrical insertion hole with the same inner diameter as the outer diameter of the cylindrical insert; if the protruding insert 14 is a square insert, then the positioning slot 22 is a square insertion hole with the same size.

[0035] In some feasible implementations, the positioning slot 22 is clearance-fitted with the protruding insert 14.

[0036] In some feasible implementations, the shape of the base 2 includes, but is not limited to, a circular base, a regular polygonal base, etc. For example... Figure 3 and Figure 6 As shown, the positioning slot 22 is located at the center of the base 2 and is coaxial with the base 2. Correspondingly, the protruding insert 14 is coaxial with the shaping core rod 1. The bottom end of the shaping core rod 1 is installed in conjunction with the positioning slot 22 through the protruding insert 14 to provide a reliable and high-precision shaping reference for the ring piece 4 to be shaped.

[0037] The positioning slot 22 is located at the top of the base 2. Preferably, the top of the positioning slot 22 extends through the upper surface 21, but the bottom of the positioning slot 22 does not extend through the bottom of the base 2. This design ensures the overall structural strength and support strength of the base 2. The positioning slot 22 makes the upper surface 21 of the base 2 a flat annular support surface.

[0038] In some feasible implementations, after the shaping core rod 1 and the base 2 are inserted into place, the bottom end face of the clearance section 13 of the shaping core rod 1 is in close contact with the upper surface 21 of the base 2, so as to use the upper surface 21 to stably support the shaping core rod 1, prevent the shaping core rod 1 from tilting or even falling over during the shaping process, and help to ensure the shaping accuracy.

[0039] In some feasible embodiments, the shaping core rod 1 is a one-piece molded core rod, that is, the guide section 11, the shaping section 12, the avoidance section 13, and the outwardly protruding insert 14 are integrally molded to form the shaping core rod 1. Meanwhile, as... Figure 3 and Figure 4 As shown, the integrally formed shaping core rod 1 preferably has a through hole 15 coaxial with the shaping core rod 1, and the through hole 15 preferably extends through both ends of the shaping core rod 1 along its axial direction. The design of the through hole 15 helps to reduce the weight of the shaping core rod 1 and facilitates production and disassembly operations.

[0040] In some feasible implementations, the shaping core rod 1 is preferably made of Cr12MoV (i.e., high wear-resistant micro-deformation steel).

[0041] Some feasible implementation methods, such as Figure 1 and Figure 7 As shown, the upper punch 3 is preferably a T-shaped punch, with its main body being a cylindrical shape. The bottom end of the cylindrical shape is the lower end face 32, and the top end of the cylindrical shape is enlarged to form a flange end 33. The flange end 33 facilitates the connection between the upper punch 3 and a pressing machine or other pressing drive, and the connection method includes, but is not limited to, bolt connection. The inner cavity 31 of the upper punch 3 is preferably a cylindrical inner cavity 31 that extends through both ends of the T-shaped punch axially, and the cylindrical inner cavity 31 is preferably clearance-fitted with the forming section 12. When the upper punch 3 is connected to the pressing machine or other pressing drive via the flange end 33, the flange end face is tightly connected to the pressing drive.

[0042] In some feasible implementations, the lower end face 32 of the upper punch 3 is a flat annular end face, and the diameter of this annular end face is not less than the diameter of the ring piece 4 to be shaped, so as to ensure that the lower end face 32 can completely cover the end face of the ring piece 4 to be shaped, and to ensure the shaping accuracy of the end face of the ring piece 4 to be shaped. In practical applications, refer to Figure 3 In the assembled mold, the shaping core rod 1, the base 2, and the upper punch 3 are coaxial. During the shaping process, the shaping core rod 1, the base 2, the upper punch 3, and the ring piece 4 to be shaped are coaxial.

[0043] In the aforementioned ring-shaped metallurgical product forming tooling mold 100, the upper end of the forming core rod 1 has a tapered guide structure, which facilitates the assembly and positioning of the ring piece 4 to be formed; the diameter of the middle cylindrical section of the forming core rod 1 matches the inner diameter of the ring piece 4 to be formed, and is used for inner diameter forming; the upper surface 21 of the base 2 is a flat annular support surface, which is used for supporting and positioning the bottom surface of the ring piece 4 to be formed; the lower end face 32 of the upper punch 3 is a flat circular end face, which is used for supporting and positioning the top surface of the ring piece 4 to be formed. The following uses a tungsten alloy fragment ring as an example to illustrate the operation steps and working principle of the above tooling mold: Step (1) Prepare the shaping core rod 1, base 2, upper punch 3 and lubricating grease, and place them on the operating table of a 100T or 300T press; Step (2) Vertically assemble the shaping core rod 1 onto the base 2; Step (3) Place the tungsten alloy fragment ring vertically on the upper end of the shaping core rod 1, and pass it through the insertion guide section 11 to the top of the shaping section 12. Generally, only one tungsten alloy fragment ring is taken at a time and vertically passed through the insertion guide section 11. After the tungsten alloy fragment ring is shaped, another tungsten alloy fragment ring is placed. Step (4) Adjust the limit device of the 100T or 300T press; the limit device of the press must be adjusted to ensure the thickness of the tungsten alloy fragment ring; Step (5) Use a 100T or 300T press to drive the upper punch 3 to perform the downward pressing operation, and hold the pressure for 5-10 seconds at the same time; generally, the holding time of a 100T press is 10 seconds, and the holding time of a 300T press is 5 seconds.

[0044] Step (6) Remove the upper punch 3 and the shaping core rod 1, and take out the shaped tungsten alloy fragment ring.

[0045] As described above, the advantages of the forming tooling and forming method of this invention lie in the fact that the inner diameter and flatness forming are completed in one step. Traditional processes involve two steps (forming the inner hole first, then the flatness), resulting in a long process flow and high labor costs. Compared to traditional forming processes, this invention combines the two steps into one, improving production efficiency. Simultaneously, the quality (inner diameter and flatness) of the ring-shaped metallurgical product is optimized and improved. After the inner circle of the ring-shaped metallurgical product is formed and corrected, its outer circle will also achieve roundness shaping due to the correction and return of the inner circle. Therefore, this invention can achieve simultaneous forming of the inner and outer diameters and end face flatness of the ring-shaped metallurgical product in a single pressing operation, enabling the outer diameter, inner diameter, and end face flatness of the ring-shaped metallurgical product to achieve the effect of simultaneous correction, and has significant promotional value.

[0046] The technical effects of the present invention will be verified below with three implementation examples and a comparative example.

[0047] Implementation Example 1: The above-mentioned ring-shaped metallurgical product shaping tooling mold 100 is used to shape and correct the tungsten alloy fragment ring. The process operation steps are as follows: (1) The specifications are 65.9 (outer diameter) × 57.2 (inner diameter) × 4.5 (thickness) tungsten alloy fragment ring, the base 2, shaping core rod 1, upper punch 3 and lubricating grease are prepared and placed on the worktable of a 100T press; (2) Assemble the shaping core rod 1 onto the base 2; (3) Each time, only one fragment ring is taken and placed vertically on the upper end face of the shaping core rod 1, and then passed through the guide section 11 to the top of the shaping section 12; (4) Adjust the limit device of the 100T press, perform the pressing operation, and hold the pressure for 10 seconds to ensure the specifications are met. 65.9× The height of the 57.2×4.5 tungsten alloy fragment ring after shaping is ≥4.9mm; (5) Guarantee specifications are 65.9× The flatness of both ends of the 57.2×4.5 tungsten alloy fragment ring after shaping is ≤0.2mm; (6) Remove the upper punch 3 and the shaping core rod 1, and take out the shaped tungsten alloy fragment ring.

[0048] Implementation Example 2: The above-mentioned ring-shaped metallurgical product shaping tooling mold 100 is used to shape and correct the tungsten alloy fragment ring. The process operation steps are as follows: (1) The specifications are 106 (outer diameter) × Prepare the 94 (inner diameter) × 8.5 (thickness) tungsten alloy fragment ring, the base 2, the shaping core rod 1, the upper punch 3 and the lubricating grease, and place them on the worktable of the 300T press. (2) Assemble the shaping core rod 1 onto the base 2; (3) Each time, only one fragment ring is taken and placed vertically on the upper end face of the shaping core rod 1, and then passed through the guide section 11 to the top of the shaping section 12; (4) Adjust the limit device of the 300T press, hold the pressure for 5 seconds, and ensure the specifications are met. 106× The height of the 94×8.5 tungsten alloy fragment ring after shaping is ≥8.9mm; (5) Guarantee specifications are 106× The flatness of the two end faces of the 94×8.5 tungsten alloy fragment ring after shaping is ≤0.2mm; (6) Remove the upper punch 3 and the shaping core rod 1, and take out the shaped tungsten alloy fragment ring.

[0049] Implementation Example 3: The above-mentioned ring-shaped metallurgical product shaping tooling mold 100 is used to shape and correct the tungsten alloy fragment ring. The process operation steps are as follows: (1) The specifications are 37 (outer diameter) × 31.4 (inner diameter) × 3.5 (thickness) tungsten alloy fragment ring, the base 2, shaping core rod 1, upper punch 3 and lubricating grease are prepared and placed on the worktable of the 100T press; (2) Assemble the shaping core rod 1 onto the base 2; (3) Each time, only one fragment ring is taken and placed vertically on the upper end face of the shaping core rod 1, and then passed through the guide section 11 to the top of the shaping section 12; (4) Adjust the limit device of the 100T press, hold the pressure for 10 seconds, and ensure the specifications are met. 37× The thickness of the 31.4×3.5 tungsten alloy fragment ring after shaping is ≥3.9mm; (5) Guarantee specifications are 37× The flatness of both ends of the 31.4×3.5 tungsten alloy fragment ring after shaping is ≤0.2mm; (6) Remove the upper punch 3 and the shaping core rod 1, and take out the shaped tungsten alloy fragment ring.

[0050] Comparative Example 1: A two-step process was used to shape tungsten alloy fragment rings. The operation steps were as follows: (1) First, prepare the shaping base, core rod, upper punch and lubricating grease of the alloy fragment ring and place them on the worktable of a 100T or 300T press; (2) Take 5 to 10 tungsten alloy fragment rings each time and place them on the upper surface of the shaping base; (3) Place the shaping core rod vertically inside the inner hole of the uppermost tungsten alloy fragment ring and perform a pressing operation to complete the inner hole shaping; (4) Adjust the 100T or 300T limit device, take 3 to 4 tungsten alloy fragment rings obtained in step (3) each time, place them on the worktable of the 100T or 300T press, and perform the pressing operation to complete the planar shaping of the fragment rings.

[0051] The flatness of the two end faces of the fragment ring obtained in Comparative Example 1 was 0.1mm~0.15mm, 0.15mm~0.25mm, and 0.25mm~0.35mm, showing significant deviations and poor consistency in flatness between the two end faces. In contrast, the flatness of the two end faces after shaping in the three implementation examples mentioned above was ≤0.2mm, indicating better consistency in flatness between the two end faces after shaping.

[0052] Based on the results of multiple experiments and verification, the flatness of the tungsten alloy fragment rings in the above 1-3 examples is better than that in Comparative Example 1.

[0053] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0054] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A shaping tooling mold for ring-shaped metallurgical products, characterized in that, Includes the top punch, shaping core rod, and base, among which: The shaping core rod is provided with an insertion guide section and a shaping section from its axial top to its axial bottom. The insertion guide section is used for the ring piece to be sleeved onto the shaping section. The outer diameter of the shaping section is equal to the inner diameter of the ring piece. The axial bottom of the shaping core rod is connected to the base and is perpendicular to the base. The upper surface of the base is used to support the lower end face of the ring piece; The upper punch has an inner cavity for sliding through the outside of the shaping core rod, and the lower end face of the upper punch is used to press the upper end face of the ring piece; the upper punch can push the ring piece through the shaping section under the action of downward pressure and press the ring piece tightly on the base.

2. The forming tooling mold for ring-shaped metallurgical products according to claim 1, characterized in that, The shaping section is a cylindrical section; the insertion guide section is a tapered section, the outer diameter of the large end of the tapered section is not greater than the outer diameter of the cylindrical section, and the large end of the tapered section and the top of the cylindrical section are smoothly connected through an arc surface structure.

3. The forming tooling mold for ring-shaped metallurgical products according to claim 2, characterized in that, The bottom of the shaping core rod is also provided with a clearance section, which is located at the end of the shaping section away from the insertion guide section; the outer wall of the clearance section is arranged to gradually narrow in diameter along the direction away from the shaping section.

4. The forming tooling mold for ring-shaped metallurgical products according to claim 3, characterized in that, The large end and the small end of the clearance section are smoothly connected by an outwardly convex arc surface; the outer diameter of the large end of the clearance section is not greater than the outer diameter of the cylindrical section, and the large end of the clearance section is smoothly connected to the bottom of the cylindrical section.

5. The forming tooling mold for ring-shaped metallurgical products according to claim 3, characterized in that, The bottom end of the clearance section of the shaping core rod is provided with an outward protruding insert block, and the base is provided with a positioning slot that is compatible with the outward protruding insert block. The shaping core rod is detachably inserted into the base through the outward protruding insert block. Alternatively, a positioning slot is provided at the bottom of the clearance section of the shaping core rod, and an external protruding plug is provided on the upper surface of the base to be inserted into the positioning slot. The shaping core rod can be detachably inserted into the base through the positioning slot.

6. The forming tooling mold for ring-shaped metallurgical products according to claim 5, characterized in that, After the shaping core rod is inserted into the base, the bottom end face of the clearance section of the shaping core rod is in close contact with the upper surface of the base.

7. The ring-shaped sheet metal product shaping tooling mold according to claim 5, characterized in that, The shaping core rod is a one-piece molded core rod, and a through hole coaxial with the one-piece molded core rod is opened in the one-piece molded core rod; the shaping core rod is coaxially arranged with the base.

8. The forming tooling mold for ring-shaped metallurgical products according to claim 1 or 2, characterized in that, The upper punch is a T-shaped punch, and the inner cavity is a cylindrical inner cavity that runs through both ends of the T-shaped punch along its axial direction. The cylindrical inner cavity is clearance-fitted with the forming section.

9. The forming tooling mold for ring-shaped metallurgical products according to claim 8, characterized in that, The lower end face of the upper punch is a circular annular end face, and the diameter of the circular annular end face is not less than the diameter of the annular plate.

10. A method for shaping ring-shaped metallurgical products based on the ring-shaped metallurgical product shaping tooling mold according to any one of claims 1-9, characterized in that, include: The ring piece to be shaped is coaxially inserted into the insertion guide section of the shaping core rod; The upper punch is pressed down by the downward drive to push the ring piece to be shaped through the shaping section until the ring piece to be shaped is pressed firmly onto the base.

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