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Die steel

A technology of mold steel and molten steel, which is applied in the field of mold steel, can solve the problems of low isotropy of steel, short mold service life, and low comprehensive performance index, and achieve the effect of high isotropy and uniformity of structure

Inactive Publication Date: 2007-04-04
沈阳市铸威特殊钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the hot work die steel produced by various domestic manufacturers has low isotropy and poor structure uniformity, and the molds produced have a short service life and low comprehensive performance indicators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] A kind of die steel, take:

[0029] C 0.40mg

[0030] Mn0.35mg

[0031] Si 0.95mg

[0032] S 0.003mg

[0033] P 0.010mg

[0034] Cr 5.2mg

[0035] Mo 1.35mg

[0036] V 1.00mg

[0037] Ni 0.25mg

[0038] Cu0.20mg

[0039] Nb 0.06mg

[0040] Fe balance

[0041] Manufacturing process: Take the above-mentioned component materials and adopt electric furnace + vacuum degassing + electroslag remelting smelting process.

[0042] 1. First melt iron in an electric furnace, start slagging and dephosphorization at 1540°C, use a large amount of slag and flow slag;

[0043] 2. After slagging and dephosphorization, carry out slag removal and reduction to create alkaline reducing slag;

[0044] 3. Desulfurization operation, the sulfur content and composition meet the requirements, the temperature reaches 1630°C, and steel tapping begins;

[0045] 4. Molten steel enters the refining furnace for slagging heating and vacuum argon blowing operation;

[0046] 5. After vacuum s...

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Abstract

The invention belongs to steel; it is a kind of die steel to be exact. The component of the die steel is composed of as follows: C, Mn, Si, S, P, Cr, M0, V, Ni, Cu, Nb, Fe margin. The die steel in this invention has these functions such as higher isotropism and the organization is uniform, it is able to endure heatproof strain, high temperature impact, polishing and burnish print, corrode, it is suitable to the forge hot mould and special mould that has strict request of polishing, figure, it can be apply to mechanical manufacture industry broadly.

Description

technical field [0001] The invention belongs to steel products, more precisely, it is a mold steel. Background technique [0002] At present, the hot work die steel produced by various domestic manufacturers has low isotropy and poor uniformity of the structure, and the molds produced have a short service life and low comprehensive performance indicators. Contents of the invention [0003] In view of this, the object of the present invention is to provide a mold steel with high isotropy and uniform structure. [0004] The object of the present invention is achieved through the following technical scheme: a kind of mold steel, is made up of the component of following percentage by weight: [0005] C 0.35-0.45 [0006] Mn 0.20-0.50 [0007] Si 0.80-1.20 [0008] S≤0.025 [0009] P≤0.030 [0010] Cr 5.00-5.50 [0011] Mo 1.20-1.50 [0012] V 0.80-1.20 [0013] Ni≤0.25 [0014] Cu≤0.25 [0015] Nb 0.04-0.20 [0016] Fe balance [0017] Manufacturing process: Take ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/26C22C38/48C22C33/04C21C7/064C21C7/072C21D1/26C21D9/68C21D11/00
Inventor 肖瑞勇
Owner 沈阳市铸威特殊钢有限公司
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