Manufacturing method of carbon steel wire with diameter of 0.05 mm

A manufacturing method and steel wire technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of immature steel wire manufacturing technology and difficulty in meeting actual needs, so as to prevent the source of cracks on the surface of the steel wire from expanding, the surface is clean and smooth, and occupies an area little effect

Active Publication Date: 2019-06-28
GUIZHOU WIRE ROPE
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AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem existing in the prior art that the manufacturing process of steel wire with a diameter below 0.10mm is immature and difficult to meet the actual needs

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0042] A method for manufacturing carbon steel wire with a diameter of 0.05 mm, the steps are as follows:

[0043] (1) Raw material selection:

[0044] The diameter of the selected wire rod is 6.5mm, and the steel grade is 45 # Steel, the content of C, Si, Mn, P, S and other elements of Cr, Ni and Cu of the steel grades meet the requirements of the national standard GB / T699 "High Quality Carbon Structural Steel";

[0045] (2) Cold drawing of semi-finished steel wire for the first time:

[0046] The first semi-finished steel wire is dry cold drawn;

[0047] The drawing process is: 6.5mm→2.75mm, the diameter of the first semi-finished product is 2.75mm, the deviation is ±0.02mm, the total compression rate is 82.1%, and it is 8-pass drawing;

[0048] The drawing route is: 5.60→5.05→4.50→4.06→3.63→3.32→3.04→2.83→2.75;

[0049] Drawing equipment selection: LW8 / 560+1 / 600, namely dry drawing equipment;

[0050] (3) The first continuous heat treatment of semi-finished steel wire:...

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Abstract

The invention discloses a manufacturing method of a carbon steel wire with a diameter of 0.05 mm. The manufacturing method comprises the steps of raw material selection-primary semi-finished steel wire cold drawing-primary semi-finished steel wire continuous heat treatment-secondary semi-finished steel wire cold drawing-secondary semi-finished steel wire continuous heat treatment-ternary semi-finished steel wire cold drawing-ternary semi-finished steel wire continuous heat treatment-finished steel wire drawing-finished steel wire inspection. The stress is eliminated to recover plasticity through the drawing combination mode and three times of heat treatment; through optimization of heat treatment parameters and specific drawing routes, the metal deformation under high compression ratio isadapted to, so that the smooth drawing process can be effectively guaranteed; through plastic deformation in the whole process, the diameter of the steel wire can be smoothly reduced; meanwhile, the tensile strength of a product is continuously improved, and the strength reaches above 2300 MPa to meet the requirements of appearance, surface quality, mechanical performances and toughness of the steel wire product; and meanwhile, the batch production is realized, and the product quality is guaranteed.

Description

technical field [0001] The invention relates to a method for manufacturing an ultra-fine carbon steel wire with a diameter of 0.05 mm, and belongs to the technical field of pressure processing of metal products. Background technique [0002] Ultra-fine steel wires are widely used in medical treatment, aviation, textiles, handicrafts, various high-end transmission equipment, precision instruments, and twisted steel wire ropes with ultra-fine diameters. This type of product has extremely high requirements on the diameter, tolerance, tensile strength, torsion, and stability of production and processing equipment of the steel wire. The manufacturing technology of the steel wire with a diameter of less than 0.10mm is immature. When drawing a steel wire with a diameter of less than 0.10mm, it is particularly difficult to pass through the mold , low operating rate, in order to reduce the number of breakage and die penetration, and improve production efficiency, the requirements for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/00B21C9/00C21D1/18C21D9/52
Inventor 吴炳章晏贞强蔡乾岭陈勇严家扬黄明刚佘斌谢卫恒唐章国林仕松
Owner GUIZHOU WIRE ROPE
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