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A hot work die steel h13 and its continuous casting production process

A technology of hot work die steel and continuous casting, which is applied in the direction of improving process efficiency, etc., can solve the problems of not meeting the market demand for high quality and good price, large investment in raw materials for production, and increased fuel costs, etc., to achieve increased ingot yield The effects of yield, process optimization, and cost reduction of raw materials

Active Publication Date: 2022-01-07
HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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Problems solved by technology

In industrial production, electric arc furnaces are usually used to melt scrap steel to obtain low-phosphorus primary molten steel-reduction alloying in refining furnaces-degassing in VD vacuum refining furnaces-die casting. This production process plays a leading role in market competition today. There are the following problems: (1) As the prices of scrap steel, molybdenum ferroalloy, and vanadium ferroalloy continue to rise, the production of raw materials using this process requires a large investment and high cost; (2) the adjustment and smelting time of all alloys in the refining furnace is long, which increases the cost of combustion
[0003] With the increasingly fierce market competition, the traditional hot work die steel H13 adopts electric arc furnace to melt scrap steel to obtain low-phosphorus initial steelmaking liquid-reduction alloying in refining furnace-degassing in VD vacuum refining furnace-die casting production method has been reduced in cost. Can not meet the market demand of high quality and good price

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  • A hot work die steel h13 and its continuous casting production process

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Embodiment 1

[0014] Embodiment 1: The technological process of the present invention is as follows: batching→melting scraps and steel shavings in an induction furnace→deoxidation reduction microalloying in a refining furnace→vacuum degassing→continuous casting and pouring steel.

[0015] A hot work die steel H13 and its continuous casting production process, the composition of the smelted hot work die steel H13 includes the following components by mass percentage: C=0.32-0.42%, Si=0.90-1.20%, Mn=0.30-0.50%, P≤0.015%, S≤0.008%, Cr=4.90%~5.50%, Mo=1.00~1.70%, V=0.80~1.10%, Al=0.010~0.030%, Ni≤0.25%, Cu≤0.10%, As ≤0.020%, Sn≤0.010%, Sb≤0.008%, H≤2ppm, N≤120ppm, O≤25ppm, and the rest are Fe and a small amount of other elements.

[0016] A continuous casting production process of hot work die steel H13, which comprises the following smelting process steps:

[0017] Step 1), raw material requirements: The raw materials of the induction furnace include 50-65% of the H13 feed head or steel shavin...

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Abstract

The invention relates to a hot work die steel H13 and its continuous casting production process which can achieve the dual purposes of reducing raw material costs and refining time and ensuring product quality. The original electric arc furnace melts scrap steel to obtain low-phosphorus primary steelmaking liquid→refining The production process of furnace reduction alloying → VD degassing → die casting is improved to a new process flow of melting similar steel grades and steel scraps in induction furnace → deoxidation reduction microalloying in refining furnace → degassing in VD vacuum refining furnace → continuous casting , to achieve the dual purpose of reducing raw material costs and refining time, and ensure product quality.

Description

technical field [0001] The invention relates to the technical field of smelting H13 steel for hot work dies, in particular to a hot work die steel H13 and its continuous casting production process, which can achieve the dual purposes of reducing raw material costs and refining time and ensuring product quality. Background technique [0002] H13 is a steel for hot working dies. It is widely used as a die material for stop mandrels for piercing pipes, hot die casting dies and hot extrusion dies because of its excellent thermal fatigue resistance and high temperature stability. In industrial production, electric arc furnaces are usually used to melt scrap steel to obtain low-phosphorus primary molten steel-reduction alloying in refining furnaces-degassing in VD vacuum refining furnaces-die casting. This production process plays a leading role in market competition today. There are the following problems: (1) As the prices of scrap steel, molybdenum ferroalloy, and vanadium ferr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/06C21C7/10C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/60
CPCC22C33/06C21C7/10C22C38/02C22C38/04C22C38/002C22C38/44C22C38/46C22C38/06C22C38/42C22C38/008C22C38/60C22C38/001Y02P10/20
Inventor 祁跃峰王怡群赵鹏宗健程晃罗道侨金会业
Owner HENAN ZHONGYUAN SPECIAL STEEL EQUIP MFG CO LTD
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