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A kind of production method of h13 continuous casting billet

A production method and continuous casting technology, applied in the direction of improving process efficiency, manufacturing converters, etc., can solve the problems of high energy consumption in electric arc furnace smelting and unfavorable low-cost production, so as to reduce the amount of cutting heads and tails, and reduce energy consumption. consumption and ensure the effect of surface quality

Active Publication Date: 2018-01-12
武汉钢铁有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, its electric arc furnace smelting consumes a lot of energy, which is not conducive to low-cost production

Method used

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  • A kind of production method of h13 continuous casting billet
  • A kind of production method of h13 continuous casting billet
  • A kind of production method of h13 continuous casting billet

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Embodiment Construction

[0021] The present invention is described in detail below:

[0022] Table 1 is the value list of the chemical components of each embodiment of the present invention and comparative examples;

[0023] Table 2 is the main process value list of each embodiment of the present invention and comparative examples;

[0024] Table 3 is a list of test results of each embodiment of the present invention and comparative examples.

[0025] Each embodiment of the present invention is produced according to the following steps:

[0026] 1) Desulfurization pretreatment of blast furnace hot metal is carried out by spraying magnesium powder combined with slag removal method, and the amount of magnesium powder injected is 0.7-0.8Kg / t molten iron, so as to satisfy the principle that the sulfur weight percentage content of molten iron is S≤0.015%;

[0027] 2) Carry out composite converter blowing, control the final slag basicity at 3.0~4.0, blowing end point C at 0.06%~0.12%, end point P≤0.015%, ...

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Abstract

Disclosed is a production method of an H13 continuous casting billet. The production method comprises the steps of adopting a method of combining magnesium powder blowing with slagging off to carry out desulfurization pretreatment on blast-furnace molten iron, converter combined blowing, argon blowing treatment, LF refining treatment, RH vacuum treatment, adopting full-process protection casting, and placing the casting billet into a slow cooling pit to be subject to slow cooling. According to the method, giant energy consumption generated by an electric arc furnace can be greatly reduced, the cleanliness of molten steel is high, the head cropping and end cropping amount caused by the die casting process can be reduced, and on the premise that the user needs are met, the production cost is greatly reduced by 6.5%.

Description

technical field [0001] The invention relates to a production method of die steel, in particular to a production method of H13 continuous casting billet. Background technique [0002] H13 die steel is an air-cooled hardened steel, which is the most widely used and most representative hot work die steel. This steel has the advantages of good hardenability, high toughness, high wear resistance, excellent thermal crack resistance and small heat treatment deformation. It is usually used to manufacture forging dies, hot extrusion dies, precision forging dies, Die-casting molds for aluminum, copper and their alloys. However, due to the high alloy content of this type of steel, problems such as segregation and porosity are prone to occur inside the slab, most of them are produced by electric arc furnace, electroslag remelting and forging. Although its technology and product quality are relatively mature, its power consumption is large, resulting in higher production costs. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/12C22C38/04C22C38/02C21C5/35C21C7/10C21C7/076B22D11/16
CPCB22D11/16C21C5/35C21C7/076C21C7/10C22C38/02C22C38/04C22C38/12C22C38/18Y02P10/20
Inventor 郑建国齐江华周剑华朱敏陈光友王瑞敏费俊杰
Owner 武汉钢铁有限公司
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