A special mold for producing wide flat alloy wire and a processing technology using the mold
By using special molds and post-rolling cold drawing process in the production of wide flat alloy wires, the problem of insufficient finished product accuracy in traditional methods is solved, and the consistency of product width and thickness and uniformity of meter resistance are achieved.
Patent Information
- Application Number
- CN202411892908.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-04-08
AI Technical Summary
Traditional wide-flat alloy wire production methods can easily lead to insufficient precision of finished products, affecting current and normal use.
Special molds are used, including cold-pull structures and reinforced structures, and the product width and thickness are consistent through rolling and then cold-pull.
The consistency of product width and thickness is achieved, making the resistance of meters uniform, and the accuracy and performance of the product are improved.
Smart Images
Figure CN119771939A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of molds, and in particular relates to a special mold for producing wide flat alloy wires and a processing technology using the mold. Background Art
[0002] Wide flat alloy wire is a metal wire with specific shape and properties. It is usually made of a variety of alloy materials and is widely used in different industrial and manufacturing fields. Its cross-sectional shape is flat. Compared with round wire, it has a larger contact area, can provide better tension and bonding effects, has higher strength and toughness, and can withstand greater tensile and bending stresses.
[0003] When used in low-voltage electrical appliances and thermal relays, due to their shorter length and higher current intensity, the requirements for product width and thickness are extremely high.
[0004] The traditional production method is through rolling forming, which is prone to errors during production, resulting in insufficient precision of the finished product, which not only affects the current but also affects its normal use. Summary of the invention
[0005] The main technical problem solved by the present invention is to provide a special mold for producing wide flat alloy wire and a processing technology using the mold, which can ensure that the width and thickness of the product are consistent, thereby making the resistance per meter uniform.
[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a special die for producing wide flat alloy wire, comprising a die body, wherein the die body is provided with a cold drawing structure;
[0007] The cold drawing structure comprises a shaping structure for shaping the blank and a reinforcing structure for reducing concentrated force on the die surface.
[0008] In a preferred embodiment of the present invention, the shaping structure includes a through hole, which is opened in the center of the mold body, and a feed port and a discharge port are opened on both sides of the through hole correspondingly. The shape and size of the discharge port are proportional to the shape and size of the feed port, with the length and width being reduced in proportion, and the inner wall of the through hole is inclined.
[0009] In a preferred embodiment of the present invention, the reinforcement structure includes two sunken surfaces, which are symmetrically opened at the centers of two opposite surfaces of the mold body, and the feed port and the discharge port are respectively located at the centers of the two sunken surfaces.
[0010] A processing technology for a special mold for producing wide flat alloy wire, the specific steps include:
[0011] 1) Billet processing: After annealing, the large diameter round billet is cold drawn to become a small diameter round billet;
[0012] 2) rolling the blank: placing the small diameter round blank in step 1) into a rolling mill, and rolling it multiple times into a blank having a size matching the feed port;
[0013] 3) Cold drawing: the blank in step 2) is placed in a cold drawing machine, and is drawn into shape by the special die to obtain a finished product;
[0014] 4) Annealing: The finished product in step 3) is placed in an annealing furnace under hydrogen protection for continuous annealing.
[0015] In a preferred embodiment of the present invention, in step 1), the surface area ratio of the large-diameter circular blank to the small-diameter circular blank is 1:0.8.
[0016] In a preferred embodiment of the present invention, in step 2), the surface area ratio of the size before rolling to the size after rolling is 1:0.9.
[0017] The beneficial effects of the present invention are as follows: the present invention provides a special mold for producing wide flat alloy wire and a processing technology using the mold. The technology adopts a special mold and a method of rolling and then cold drawing to ensure that the width and thickness of the product are consistent, thereby making the resistance per meter uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A three-dimensional diagram of a special mold for producing wide flat alloy wire.
[0019] Figure 2 This is a sectional view of the right side of a special die for producing wide flat alloy wire.
[0020] The markings of the components in the accompanying drawings are as follows: 1. mold body; 2. feed port; 3. discharge port; 4. through hole; 5. sinking surface. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0022] See also Figure 1 and Figure 2 A special mold for producing wide flat alloy wire includes a mold body 1, on which a cold drawing structure is provided. By using a special mold with the cold drawing structure, the width and thickness of the product can be ensured to be consistent through rolling and then cold drawing, thereby making the resistance per meter uniform.
[0023] The cold drawing structure comprises a shaping structure for shaping the blank and a reinforcing structure for reducing concentrated force on the die surface.
[0024] The shaping structure includes a through hole 4, which is opened at the center of the mold body 1. A feed port 2 and a discharge port 3 are correspondingly opened on both sides of the through hole 4. The shape and size of the discharge port 3 are proportionally reduced in length and width from the shape and size of the feed port 2. The inner wall of the through hole 4 is inclined. The through hole 4 is used for final cold drawing shaping of the rolled blank to ensure that the width and thickness of the product are consistent, thereby making the resistance uniform.
[0025] The reinforcement structure includes two sunken surfaces 5, which are symmetrically opened at the centers of two opposite surfaces of the mold body 1. The feed port 2 and the discharge port 3 are respectively located at the centers of the two sunken surfaces 5. The sunken surfaces 5 can reduce the concentrated force on the surface of the mold body 1, improve the overall strength and durability of the mold, and reduce wear and fatigue.
[0026] A processing technology for a special mold for producing wide flat alloy wire, the specific steps include:
[0027] 1) Billet processing: The large diameter round billet is annealed and then cold drawn to become a small diameter round billet, and the surface area ratio of the large diameter round billet to the small diameter round billet is 1:0.8.
[0028] 2) Rolling the blank: putting the small diameter round blank in step 1) into a rolling mill, and rolling it multiple times into a blank with a size matching the feed port 2, wherein the surface area ratio of the size before rolling to the size after rolling is 1:0.9.
[0029] 3) Cold drawing: The blank in step 2) is placed in a cold drawing machine, and is drawn into shape through the special die to obtain a finished product. After rolling, cold drawing is performed to ensure that the width and thickness of the product are consistent, thereby making the resistance uniform.
[0030] 4) Annealing: The finished product in step 3) is placed in an annealing furnace under hydrogen protection for continuous annealing.
[0031] During high-temperature annealing, metal materials easily react with oxygen in the air to form oxides. These oxides will reduce the performance of the material and affect subsequent processing and application. Using hydrogen as a protective gas can effectively prevent the occurrence of oxidation reactions. Hydrogen can react with the metal surface, exclude oxygen in the air, and form a stable atmosphere, thereby protecting the metal surface.
[0032] Compared with the prior art, the present invention provides a special mold for producing wide flat alloy wire and a processing technology using the mold. The process adopts a special mold and a method of rolling and then cold drawing to ensure that the width and thickness of the product are consistent, thereby making the resistance per meter uniform.
[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A special die for producing wide flat alloy wire, comprising a die body, characterized in that: The mold body is provided with a cold drawing structure; The cold drawing structure comprises a shaping structure for shaping the blank and a reinforcing structure for reducing concentrated force on the die surface.
2. A special die for producing wide flat alloy wire according to claim 1, characterized in that: The shaping structure includes a through hole, which is opened in the center of the mold body. A feed port and a discharge port are correspondingly opened on both sides of the through hole. The shape and size of the discharge port are proportional to the shape and size of the feed port, with the length and width being reduced in proportion. The inner wall of the through hole is inclined.
3. A special die for producing wide flat alloy wire according to claim 2, characterized in that: The reinforcement structure comprises two sunken surfaces, which are symmetrically arranged at the centers of two opposite surfaces of the mold body, and the feed port and the discharge port are respectively located at the centers of the two sunken surfaces.
4. A processing technology using a special die for producing wide flat alloy wire according to claim 3, characterized in that: The specific steps include: 1) Billet processing: After annealing, the large diameter round billet is cold drawn to become a small diameter round billet; 2) rolling the blank: placing the small diameter round blank in step 1) into a rolling mill, and rolling it multiple times into a blank having a size matching the feed port; 3) Cold drawing: the blank in step 2) is placed in a cold drawing machine, and is drawn into shape by the special die to obtain a finished product; 4) Annealing: The finished product in step 3) is placed in an annealing furnace under hydrogen protection for continuous annealing.
5. The processing technology of a special mold for producing wide flat alloy wire according to claim 4, characterized in that: In the step 1), the surface area ratio of the large-diameter circular blank to the small-diameter circular blank is 1:0.
8.
6. The processing technology of a special mold for producing wide flat alloy wire according to claim 4, characterized in that: In the step 2), the surface area ratio of the size before rolling to the size after rolling is 1:0.9.