A kind of production method of high plasticity high speed steel

A production method, high-speed steel technology, applied in the field of new materials, can solve problems such as insufficient processing yield, low plasticity of high-speed steel, and troubles for high-speed steel manufacturers, so as to avoid adverse effects, improve plasticity of high-speed steel, and improve carbide distribution Effect

Active Publication Date: 2015-09-09
SOUTHEAST UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the existing methods have improved the plasticity of high-speed steel to varying degrees, which is conducive to improving the processing yield of high-speed steel, however, the plasticity of the high-speed steel produced is still low, especially the ultra-hard high-speed steel (such as M42). The problem of insufficient processing yield still plagues high-speed steel manufacturers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 high plasticity low alloy high-speed steel W4Mo2Cr4V

[0022] (1) Strict selection of raw materials for W4Mo2Cr4V high-speed steelmaking. The S content in the raw materials is 0.007%, the P content is 0.022%, the Ni content is 0.21%, and the Cu content is 0.18%.

[0023] (2) Smelt W4Mo2Cr4V high-speed steel in a vacuum induction melting furnace. After the composition meets the requirements, cast the self-consumable electrode rod and cool it slowly to room temperature;

[0024] (3) Use a vacuum consumable remelting furnace to remelt the consumable electrode rod, thereby reducing the gas and impurity content in the steel; during the vacuum consumable process, by binding calcium iron wire on the consumable electrode rod, Carry out calcium microalloying treatment, calcium addition is 0.5% of total mass; Make high-speed steel remelting ingot, the oxygen content in the high-speed steel remelting ingot is 12ppm, nitrogen content is 50ppm, and hy...

Embodiment 2

[0027] Preparation of embodiment 2 high plasticity low alloy high speed steel W4Mo2Cr4V

[0028] (1) Strict selection of raw materials for W4Mo2Cr4V high-speed steelmaking. The S content in the raw materials is 0.005%, the P content is 0.020%, the Ni content is 0.19%, and the Cu content is 0.25%.

[0029] (2) Smelt W4Mo2Cr4V high-speed steel in a vacuum induction melting furnace. After the composition meets the requirements, cast the self-consumable electrode rod and cool it slowly to room temperature;

[0030] (3) Use a vacuum consumable remelting furnace to remelt the consumable electrode rod, thereby reducing the gas and impurity content in the steel; during the vacuum consumable process, by binding calcium iron wire on the consumable electrode rod, Carry out calcium microalloying treatment, the amount of calcium added is 0.7% of the total mass; high-speed steel remelted ingot is obtained, the oxygen content in the high-speed steel remelted ingot is 9ppm, the nitrogen conte...

Embodiment 3

[0033] Embodiment 3 High plasticity universal high-speed steel W6Mo5Cr4V2

[0034] (1) Strict selection of raw materials for W6Mo5Cr4V2 high-speed steelmaking. The S content in the raw materials is 0.008%, the P content is 0.020%, the Ni content is 0.25%, and the Cu content is 0.18%.

[0035] (2) Smelt W6Mo5Cr4V2 high-speed steel in a vacuum induction melting furnace. After the composition meets the requirements, cast the self-consumable electrode rod and cool it slowly to room temperature;

[0036](3) Use a vacuum consumable remelting furnace to remelt the consumable electrode rod, thereby reducing the gas and impurity content in the steel; during the vacuum consumable process, by binding calcium iron wire on the consumable electrode rod, Carry out calcium microalloying treatment, the amount of calcium added is 0.6% of the total mass; high-speed steel remelted ingot is obtained, the oxygen content in the high-speed steel remelted ingot is 8ppm, the nitrogen content is 37ppm, ...

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Abstract

The invention provides a production method for high-plasticity high-speed steel. The production method comprises steps of selecting materials according to parts by weight of all elements of the high-speed steel to be prepared, and controlling the contents of harmful elements in the raw material; smelting by a vacuum induction melting furnace, casting so as to obtain a consumable electrode bar; remelting the consumable electrode bar by a vacuum consumable remelt furnace so as to obtain a high-speed steel remelting ingot, wherein a calcium iron wire is tied on the consumable electrode bar in vacuum consumable process; cogging the high-speed steel remelting ingot, then forging, hot rolling so as to obtain a high-speed steel coil rod, annealing the coil rod so as to obtain the high plasticity high-speed steel. The production method is simple and easy to control and can be used for preparing high-plasticity high-speed steel.

Description

technical field [0001] The invention belongs to the field of new materials, in particular to a production method of high-plasticity high-speed steel. Background technique [0002] High-speed steel has the advantages of high hardness, high red hardness, and good toughness. It is widely used in the manufacture of high-speed cutting tools such as twist drills, taps, turning tools, and milling cutters. It is also used in high-load molds and special heat-resistant and wear-resistant parts. . However, high-speed steel is a kind of steel that is difficult to deform. Its plastic deformation ability is poor, it is easy to crack during processing, and the yield is not high, which significantly increases the production cost of high-speed steel tools. Improving the processing plasticity of high-speed steel and increasing the yield of high-speed steel have always been technical problems for high-speed steel manufacturers. [0003] The lack of plasticity of high-speed steel is mainly re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/16C21D8/06C21D1/26
CPCY02P10/25
Inventor 周雪峰方峰蒋建清徐辉霞朱旺龙
Owner SOUTHEAST UNIV
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