Drawing process for optimizing surface quality of special-shaped steel wire

Abstract

The drawing process for optimizing the surface quality of the special-shaped steel wire comprises the steps that a plurality of sets of forming dies are correspondingly arranged, and the forming dies at least comprise a forming die A of a large-tolerance forming cavity, a forming die A of a middle-position-difference forming cavity and a forming die C of a small-tolerance forming cavity; a finished product forming cavity forming mold matched with the finished product special-shaped steel wire is arranged corresponding to the forming mold C of the small-tolerance forming cavity; drawing is carried out at the speed of 10 m / min to 35 m / min, and in the drawing process, the steel wire raw material is subjected to primary reduction shaping through a forming mold A of a large-tolerance forming cavity, secondary gradual reduction shaping through a forming mold B of a medium-tolerance forming cavity and third-time gradual reduction shaping through a forming mold C of a small-tolerance forming cavity, so that a drawing shaping structure before special-shaped steel wire forming is formed; before the special-shaped steel wire is formed, the pre-formed rough blank steel wire of the shaping structure is drawn, a forming die is formed by well corresponding to a finished product forming cavity, and high-quality forming of the special-shaped steel wire is carried out.

Description

Technical Field

[0001] The invention relates to a steel wire preparation technology, in particular to the preparation of special-shaped steel wires, and specifically to a drawing process for optimizing the surface quality of the special-shaped steel wires. Background Art

[0002] At present, spring manufacturers around the world are accelerating their transformation to match the new requirements brought about by the current automobile revolution. In response to the new era and new trends, many special-shaped steel wires have emerged, such as L-shaped and other irregular polygonal products. At this stage, sampling directly uses a drawing die of matching shape, and directly draws this polygon through a drawing machine. However, the current forming method cannot guarantee the surface quality of the special-shaped steel wire.

[0003] Therefore, it is necessary to provide a drawing process for optimizing the surface quality of special-shaped steel wire to solve the above problems. Summary of the invention

[0004] The purpose of the invention is to provide a drawing process for optimizing the surface quality of a special-shaped steel wire.

[0005] The present invention achieves the above object through the following technical solutions:

[0006] A drawing process for optimizing the surface quality of a special-shaped steel wire, comprising the following steps:

[0007] 1) A plurality of component molding dies are correspondingly arranged, and the molding dies at least include a molding die A for a large tolerance molding cavity, a molding die A for a medium difference molding cavity, and a molding die C for a small tolerance molding cavity;

[0008] 2) Configure the tapered tolerance molding structure:

[0009] The drawing forming cavity A of the forming die A with large tolerance forming cavity is 0.5-0.8mm larger than the finished special-shaped steel wire;

[0010] The drawing forming cavity B of the forming die B with medium tolerance forming cavity is 0.3-0.4mm larger than the finished special-shaped steel wire;

[0011] The drawing forming cavity C of the forming die C with small tolerance forming cavity is 0.2 mm larger than the finished special-shaped steel wire;

[0012] 3) The forming mold C corresponding to the small tolerance forming cavity is provided with a finished product forming cavity forming mold matching the finished product special-shaped steel wire;

[0013] 4) Drawing is performed at a speed of 10m / min-35m / min. During the drawing process, the steel wire raw material is subjected to the primary reduction shaping of the forming die A of the large tolerance forming cavity, the secondary gradual reduction shaping of the forming die B of the medium tolerance forming cavity, and the tertiary gradual reduction shaping of the forming die C of the small tolerance forming cavity, so as to form a drawing shaping structure before the special-shaped steel wire is formed;

[0014] 5) By drawing the pre-shaped rough steel wire of the shaping structure before the special-shaped steel wire is formed, a good corresponding finished product forming cavity forming mold is made to form the special-shaped steel wire with high quality.

[0015] Furthermore, there is a sufficient supply groove for drawing powder between the molding die C corresponding to the small tolerance molding cavity and the molding die of the finished molding cavity.

[0016] Furthermore, the number of the forming dies A of the large tolerance forming cavities is 2-3, the forming dies A of the large tolerance forming cavities are arranged in sequence, and the drawing forming cavities A are reduced by 0.1 mm in sequence.

[0017] Furthermore, the number of the forming dies B of the medium tolerance forming cavities is 2, the forming dies B of the two medium tolerance forming cavities are arranged in sequence, and the drawing forming cavities B are reduced by 0.08 mm in sequence.

[0018] Furthermore, the number of the molding mold C of the small tolerance molding cavity is one.

[0019] Compared with the prior art, the present invention forms the final special-shaped steel wire through multiple gradual shrinkage shaping and then fully infiltrating and wrapping the drawing powder, so the forming efficiency is high and the finished product quality is good. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] This embodiment shows a drawing process for optimizing the surface quality of a special-shaped steel wire, and the steps include:

[0022] 1) A plurality of component molding dies are correspondingly arranged, and the molding dies at least include a molding die A for a large tolerance molding cavity, a molding die A for a medium difference molding cavity, and a molding die C for a small tolerance molding cavity;

[0023] 2) Configure the tapered tolerance molding structure:

[0024] The drawing forming cavity A of the forming die A with large tolerance forming cavity is 0.5 mm larger than the finished special-shaped steel wire;

[0025] The drawing forming cavity B of the forming die B with medium tolerance forming cavity is 0.3 mm larger than the finished special-shaped steel wire;

[0026] The drawing forming cavity C of the forming die C with small tolerance forming cavity is 0.2 mm larger than the finished special-shaped steel wire;

[0027] 3) The forming mold C corresponding to the small tolerance forming cavity is provided with a finished product forming cavity forming mold matching the finished product special-shaped steel wire;

[0028] 4) Drawing is performed at a speed of 10 m / min. During the drawing process, the steel wire raw material is subjected to a first reduction and shaping of the forming die A of the large tolerance forming cavity, a second gradual reduction and shaping of the forming die B of the medium tolerance forming cavity, and a third gradual reduction and shaping of the forming die C of the small tolerance forming cavity, thereby forming a drawing and shaping structure before the special-shaped steel wire is formed;

[0029] 5) By drawing the pre-shaped rough steel wire of the shaping structure before the special-shaped steel wire is formed, a good corresponding finished product forming cavity forming mold is made to form the special-shaped steel wire with high quality.

[0030] in:

[0031] There is a sufficient supply groove for drawing powder between the molding die C corresponding to the small tolerance molding cavity and the molding die of the finished molding cavity.

[0032] The number of the forming dies A of the large tolerance forming cavities is 2, and the forming dies A of the large tolerance forming cavities are arranged in sequence, and the drawing forming cavities A are reduced by 0.1 mm in sequence.

[0033] The number of the forming dies B of the medium tolerance forming cavity is 2, and the forming dies B of the two medium tolerance forming cavities are arranged in sequence, and the drawing forming cavities B are reduced by 0.08 mm in sequence.

[0034] The number of the molding die C of the small tolerance molding cavity is one.

[0035] Embodiment 2:

[0036] This embodiment shows a drawing process for optimizing the surface quality of a special-shaped steel wire, and the steps include:

[0037] 1) A plurality of component molding dies are correspondingly arranged, and the molding dies at least include a molding die A for a large tolerance molding cavity, a molding die A for a medium difference molding cavity, and a molding die C for a small tolerance molding cavity;

[0038] 2) Configure the tapered tolerance molding structure:

[0039] The drawing forming cavity A of the forming die A with large tolerance forming cavity is 0.8 mm larger than the finished special-shaped steel wire;

[0040] The drawing forming cavity B of the forming die B with medium tolerance forming cavity is 0.4 mm larger than the finished shaped steel wire;

[0041] The drawing forming cavity C of the forming die C with small tolerance forming cavity is 0.2 mm larger than the finished special-shaped steel wire;

[0042] 3) The forming mold C corresponding to the small tolerance forming cavity is provided with a finished product forming cavity forming mold matching the finished product special-shaped steel wire;

[0043] 4) Drawing is performed at a speed of 35 m / min. During the drawing process, the steel wire raw material is subjected to a first reduction and shaping of the forming die A of the large tolerance forming cavity, a second gradual reduction and shaping of the forming die B of the medium tolerance forming cavity, and a third gradual reduction and shaping of the forming die C of the small tolerance forming cavity, thereby forming a drawing and shaping structure before the special-shaped steel wire is formed;

[0044] 5) By drawing the pre-shaped rough steel wire of the shaping structure before the special-shaped steel wire is formed, a good corresponding finished product forming cavity forming mold is made to form the special-shaped steel wire with high quality.

[0045] in:

[0046] There is a sufficient supply groove for drawing powder between the molding die C corresponding to the small tolerance molding cavity and the molding die of the finished molding cavity.

[0047] The number of the forming dies A of the large tolerance forming cavities is 23, and the forming dies A of the large tolerance forming cavities are arranged in sequence, and the drawing forming cavities A are reduced by 0.1 mm in sequence.

[0048] The number of the forming dies B of the medium tolerance forming cavity is 2, and the forming dies B of the two medium tolerance forming cavities are arranged in sequence, and the drawing forming cavities B are reduced by 0.08 mm in sequence.

[0049] The number of the molding die C of the small tolerance molding cavity is one.

[0050] Embodiment 3:

[0051] This embodiment shows a drawing process for optimizing the surface quality of a special-shaped steel wire, and the steps include:

[0052] 1) A plurality of component molding dies are correspondingly arranged, and the molding dies at least include a molding die A for a large tolerance molding cavity, a molding die A for a medium difference molding cavity, and a molding die C for a small tolerance molding cavity;

[0053] 2) Configure the tapered tolerance molding structure:

[0054] The drawing forming cavity A of the forming die A with large tolerance forming cavity is 0.5-0.8mm larger than the finished special-shaped steel wire;

[0055] The drawing forming cavity B of the forming die B with medium tolerance forming cavity is 0.35 mm larger than the finished special-shaped steel wire;

[0056] The drawing forming cavity C of the forming die C with small tolerance forming cavity is 0.2 mm larger than the finished special-shaped steel wire;

[0057] 3) The forming mold C corresponding to the small tolerance forming cavity is provided with a finished product forming cavity forming mold matching the finished product special-shaped steel wire;

[0058] 4) Drawing is performed at a speed of 22 m / min. During the drawing process, the steel wire raw material is subjected to a first reduction and shaping of the forming die A of the large tolerance forming cavity, a second gradual reduction and shaping of the forming die B of the medium tolerance forming cavity, and a third gradual reduction and shaping of the forming die C of the small tolerance forming cavity, thereby forming a drawing and shaping structure before the special-shaped steel wire is formed;

[0059] 5) By drawing the pre-shaped rough steel wire of the shaping structure before the special-shaped steel wire is formed, a good corresponding finished product forming cavity forming mold is made to form the special-shaped steel wire with high quality.

[0060] in:

[0061] There is a sufficient supply groove for drawing powder between the molding die C corresponding to the small tolerance molding cavity and the molding die of the finished molding cavity.

[0062] The number of the forming dies A of the large tolerance forming cavities is 2, and the forming dies A of the large tolerance forming cavities are arranged in sequence, and the drawing forming cavities A are reduced by 0.1 mm in sequence.

[0063] The number of the forming dies B of the medium tolerance forming cavity is 2, and the forming dies B of the two medium tolerance forming cavities are arranged in sequence, and the drawing forming cavities B are reduced by 0.08 mm in sequence.

[0064] The number of the molding die C of the small tolerance molding cavity is one.

[0065] Compared with the prior art, the present invention forms the final special-shaped steel wire through multiple gradual shrinkage shaping and then fully infiltrating and wrapping the drawing powder, so the forming efficiency is high and the finished product quality is good.

[0066] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A drawing process for optimizing the surface quality of a special-shaped steel wire, characterized in that: The steps include: 1) A plurality of component molding dies are correspondingly arranged, and the molding dies at least include a molding die A for a large tolerance molding cavity, a molding die A for a medium difference molding cavity, and a molding die C for a small tolerance molding cavity; 2) Configure the tapered tolerance molding structure: The drawing forming cavity A of the forming die A with large tolerance forming cavity is 0.5-0.8mm larger than the finished special-shaped steel wire; The drawing forming cavity B of the forming die B with medium tolerance forming cavity is 0.3-0.4mm larger than the finished special-shaped steel wire; The drawing forming cavity C of the forming die C with small tolerance forming cavity is 0.2 mm larger than the finished special-shaped steel wire; 3) The forming mold C corresponding to the small tolerance forming cavity is provided with a finished product forming cavity forming mold matching the finished product special-shaped steel wire; 4) Drawing is performed at a speed of 10m / min-35m / min. During the drawing process, the steel wire raw material is subjected to the primary reduction shaping of the forming die A of the large tolerance forming cavity, the secondary gradual reduction shaping of the forming die B of the medium tolerance forming cavity, and the tertiary gradual reduction shaping of the forming die C of the small tolerance forming cavity, so as to form a drawing shaping structure before the special-shaped steel wire is formed; 5) By drawing the pre-shaped rough steel wire of the shaping structure before the special-shaped steel wire is formed, a good corresponding finished product forming cavity forming mold is made to form the special-shaped steel wire with high quality.

2. The drawing process for optimizing the surface quality of a special-shaped steel wire according to claim 1, characterized in that: There is a sufficient supply groove for drawing powder between the molding die C corresponding to the small tolerance molding cavity and the molding die of the finished molding cavity.

3. A drawing process for optimizing the surface quality of a special-shaped steel wire according to claim 1 or 2, characterized in that: The number of the forming dies A of the large tolerance forming cavities is 2-3, and the forming dies A of the large tolerance forming cavities are arranged in sequence, and the drawing forming cavities A are reduced by 0.1 mm in sequence.

4. The drawing process for optimizing the surface quality of a special-shaped steel wire according to claim 3, characterized in that: The number of the forming dies B of the medium tolerance forming cavity is 2, and the forming dies B of the two medium tolerance forming cavities are arranged in sequence, and the drawing forming cavities B are reduced by 0.08 mm in sequence.

5. The drawing process for optimizing the surface quality of a special-shaped steel wire according to claim 4, characterized in that: The number of the molding die C of the small tolerance molding cavity is one.