High-speed steel production process

A production process and high-speed steel technology, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of lengthy production process and high cost of high-speed steel, and achieve shortened processing time, good structure and deformation resistance. reduced effect

Inactive Publication Date: 2018-03-13
重庆派斯克刀具制造股份有限公司
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Problems solved by technology

[0003] The present invention intends to provide a high-speed steel production process to solve the problems of lengthy production process and high cost of high-speed steel in the prior art

Method used

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  • High-speed steel production process

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Embodiment Construction

[0010] The present invention will be described in further detail below by means of specific embodiments:

[0011] like figure 1 As shown, a high-speed steel production process includes the following steps,

[0012] 1. Raw material composition smelting step: smelting the raw material composition except carbon according to the standard ratio, wherein the mass fraction of carbon is controlled at 0.4%;

[0013] 2. Casting ingot shape step: pour molten steel into a steel ingot with a circular cross section;

[0014] 3. Steel ingot annealing step: heat the steel ingot to 780°C, keep it warm for 6 hours, and then carry out air cooling;

[0015] 4. Forging and annealing step: forging the steel ingot obtained in the ingot annealing step three times along the length direction, then heating the forged steel ingot to 780°C, keeping it warm for 6 hours, and then air cooling;

[0016] 5. Hot rolling and annealing step: hot rolling the steel ingot obtained in the forging and back step, th...

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Abstract

The invention discloses a high-speed steel production process, which sequentially comprises the following steps of smelting raw material components; pouring and ingoting; annealing a steel ingot; forging and annealing; hot rolling and annealing; cold rolling and annealing; and heat treating a finished product. During the raw material component smelting process, a raw material component is preparedfrom smaller than 0.4 percent of carbon according to the parts by weight. The problems that in the prior art, a high-speed steel production process is lengthy and high in cost are solved.

Description

technical field [0001] The invention relates to a production process of an iron-based alloy, in particular to a high-speed steel production process. Background technique [0002] The production process of high-speed steel from smelting to finished product is more difficult than ordinary materials, the production process is longer, and the cost is also high. The existing high-speed steel production process includes: raw material composition smelting steps, casting ingot molding steps, steel ingot annealing steps, forging and annealing steps, hot rolling and annealing steps, cold rolling steps, spheroidizing and annealing steps, and finished product heat treatment steps. In the raw material component smelting step, each raw material component is mixed according to a standard ratio, and the mass fraction of carbon therein is generally between 0.7-1.3%. Therefore, the segregation of the cast ingot after smelting caused by the higher carbon content (usually at 0.7-1.3%), and thu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D8/00C21D1/18C23C8/22
CPCC21D1/18C21D1/26C21D8/005C23C8/22
Inventor 陈海涛蔡进刘勇
Owner 重庆派斯克刀具制造股份有限公司
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