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Long-fatigue-life corrosion-resistant 304M2 stainless steel wire for spokes and manufacturing process thereof

A technology of fatigue life and stainless steel wire, which is applied in the field of stainless steel wire for long fatigue life and corrosion-resistant 304M2 spokes and its manufacturing process, which can solve problems such as unfavorable riding comfort and safety, influence on appearance, fracture, etc., and achieve bending fatigue test Excellent results, improved tensile strength, and excellent corrosion resistance

Active Publication Date: 2020-04-17
JIANGYIN KANGRUI MOLDING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Spokes are one of the key components that affect the performance of spoked bicycles and motorcycles. The most common problems during use are rust, breakage, etc. These problems not only affect the appearance, but also are not conducive to riding comfort and safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention is a long fatigue life and corrosion-resistant 304M2 stainless steel wire for spokes, which is composed of the following alloy elements in mass percentage: C 0.12~0.17, Si≤0.5, Mn 13.0~14.5, Cr 17~18, Ni 7.5~8.0, N 0.16~ 0.20, P≤0.05, S≤0.02, the balance is Fe and unavoidable impurities.

[0016] The process for manufacturing said long fatigue life corrosion-resistant 304M2 spoke stainless steel wire comprises the following steps:

[0017] S1: Use a coating agent to treat the surface of the Φ5.5mm stainless steel wire with the above alloy elements, and then dry it in a drying oven at a temperature of 100-150°C for 0.5-1.0 hours;

[0018] S2: The stainless steel wire rod is drawn continuously on the wire drawing machine for eight times, and the area reduction rate of the first pass is controlled within the range of 24-30%, and the area reduction rate of the subsequent passes is gradually reduced, and is drawn after 6-9 passes After pulling, a semi-...

Embodiment 2

[0023] The only difference with Embodiment 1 is that the process of manufacturing the stainless steel wire for the long fatigue life and corrosion resistance 304M2 spokes includes the following steps:

[0024] S1: Use a coating agent to treat the surface of the Φ6.5mm stainless steel wire with the above alloy elements, and then dry it in a drying oven at a temperature of 100-150°C for 0.5-1.0 hours;

[0025] S2: The stainless steel wire rod is drawn continuously on the wire drawing machine for eight times, and the area reduction rate of the first pass is controlled within the range of 24-30%, and the area reduction rate of the subsequent passes is gradually reduced, and is drawn after 6-9 passes After pulling, a semi-finished product is obtained, and the semi-finished product is reserved for a 16-20% area reduction rate of the light-drawn finished product relative to the size of the finished product;

[0026] S3: Continuous bright heat treatment furnace is used. After the I-sh...

Embodiment 3

[0030] The only difference with Embodiment 1 is that the process of manufacturing the stainless steel wire for the long fatigue life and corrosion resistance 304M2 spokes includes the following steps:

[0031] S1: Use a coating agent to treat the surface of the Φ6mm stainless steel wire rod with the above alloy elements, and then dry it in a drying furnace at a temperature of 100-150°C for 0.5-1.0 hours;

[0032]S2: The stainless steel wire rod is drawn continuously on the wire drawing machine for eight times, and the area reduction rate of the first pass is controlled within the range of 24-30%, and the area reduction rate of the subsequent passes is gradually reduced, and is drawn after 6-9 passes After pulling, a semi-finished product is obtained, and the semi-finished product is reserved for a 16-20% area reduction rate of the light-drawn finished product relative to the size of the finished product;

[0033] S3: Continuous bright heat treatment furnace is used. After the ...

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Abstract

The invention discloses a long-fatigue-life corrosion-resistant 304M2 stainless steel wire for spokes. The long-fatigue-life corrosion-resistant 304M2 stainless steel wire is composed of the followingalloy elements in percentage by mass, 0.07-0.17% of C, less than or equal to 0.5% of Si, 12.0-15.5% of Mn, 17-19% of Cr, 7.0-8.5% of Ni, 0.10-0.20% of N, less than or equal to 0.05% of P, less than or equal to 0.02% of S, and the balance Fe and inevitable impurities. According to the long-fatigue-life corrosion-resistant 304M2 stainless steel wire, after being processed into the spokes, the spokeproduct can have high strength and toughness and excellent corrosion resistance, the bending fatigue test result and corrosion resistance are excellent, the spoke product is suitable for bicycles andmotorcycles, and the nonmagnetic spoke product is more suitable for motorcycles.

Description

technical field [0001] The invention relates to a stainless steel wire for corrosion-resistant 304M2 spokes with long fatigue life and a manufacturing process thereof. Background technique [0002] Spokes are one of the key components that affect the performance of spoked bicycles and motorcycles. The most common problems during use are rust, breakage, etc. These problems not only affect the appearance, but also are not conducive to riding comfort and safety . Spoke material is the determining factor in spoke performance. In recent years, the spoke material has gradually changed from traditional carbon steel to stainless steel. Compared with carbon steel products, stainless steel products have obvious advantages in terms of production process environmental protection, mechanical strength, corrosion resistance, and appearance. Now the requirements for the toughness and corrosion resistance of spokes for bicycles and motorcycles are getting higher and higher, and the spokes...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/58C21D8/06
CPCC21D8/065C21D2211/001C21D2211/005C21D2211/008C22C38/001C22C38/02C22C38/58
Inventor 李晓光
Owner JIANGYIN KANGRUI MOLDING TECH CO LTD
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