Wearable steel plate with low cost and high strength and producing method thereof

A wear-resistant steel plate, low-alloy high-strength technology, applied in the field of high-strength wear-resistant steel plates, can solve the problems affecting the normal production of heat treatment furnaces, difficult production organization and control, increase production costs, etc., to achieve high strength, good welding performance, The effect of increasing productivity

Inactive Publication Date: 2010-12-29
SHOUGANG CORPORATION +2
2 Cites 31 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, the steel contains high precious metal elements such as Ni and Mo, and the cost is relatively high.
[0004] There are also patents of "a high-strength wear-resistant plate and its preparation method" and "a quenched and tempered wear-resistant steel and its heat treatment method" invented by Wuyang Iron and Steel Company. The components are: C0.12-0.16%, Si 0.10-0.70%, Mn 0.90-1.50%, P≤0.020%, S≤0.010%, Cr0.20-0.70%, Ni 0.05-0.30%, V 0.03-0.08%, Nb 0.01-0.06%, Mo0.10- 0.50%, Ti 0.01-0.06%, Al 0.02-0.08%, B 0.0005-0.0030% and C0.14-0.18%, Si 0.20-0.40%, Mn 1.20-1.40%, P≤0.015%, S≤0.005%, Cr0.50-0.70%, Ni 0.40-0.55%, V 0.03-0.08%, Nb 0.02...
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Abstract

The invention provides a wearable steel plate with low cost and high strength and a producing method thereof. The mass percentage of chemical components of the steel plate are that: C is 0.13-0.20%, Si is 0.15-0.40%, Mn is 0.8-1.50%, P is not more than 0.02%, Cr is 0.10-0.50%, Al is 0.02-0.06%, Ti is 0.005-0.02%, B is 0.0010-0.0020%, and the residue is Fe and inevitable impurities. The producing method for the steel comprises the following steps of highly cleaning steel melting-molten iron desulfuration-converter top-bottom composite blowing-vacuum treatment-blank casting; especially, the technique parameters in the process of slab heating, rolling and heat treatment can be reasonably controlled; the maximum thickness of the made steel plate is 80mm, the Brinell hardness is 370-430 and the hardness is uniformly distributed. The chemical components of the steel contain no precious alloy elements such as Nb, V, Mo and Ni, etc; the steel has low content of alloy, low cost, good roughness, good wearable performance and welding performance; the steel is widely applied for severe working conditions and the mine and the engineering machinery product with high performance requirement on the steel.

Technology Topic

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  • Wearable steel plate with low cost and high strength and producing method thereof
  • Wearable steel plate with low cost and high strength and producing method thereof
  • Wearable steel plate with low cost and high strength and producing method thereof

Examples

  • Experimental program(2)

Example Embodiment

[0029] Example 1
[0030] Low-cost high-strength wear-resistant steel plate, thickness 20mm, its chemical composition is: mass percentage C 0.17%, Si 0.36%, Mn 1.40%, P 0.012%, S≤0.003%, Cr0.31%, Al 0.04%, Ti 0.015%, B 0.0017%, the rest is iron Fe and inevitable impurities. Table 1 below is the controlled rolling air cooling and heat treatment process parameters under this composition, and Table 2 is the mechanical properties obtained under the process parameters.
[0031] Table 1 Rolling and heat treatment process parameters
[0032]
[0033] Table 2 Mechanical properties
[0034]

Example Embodiment

[0035] Example 2
[0036] Low-cost high-strength wear-resistant steel plate, thickness 30mm, its chemical composition composition is: C 0.18%, Si 0.36%, Mn 1.40%, P 0.012%, S≤0.003%, Cr 0.36%, Al0.04%, Ti 0.016% , B 0.0017%, the rest is iron Fe and unavoidable impurities. Table 3 below is the controlled rolling air cooling and heat treatment process parameters under this composition, and Table 4 is the mechanical properties obtained under the process parameters.
[0037] Table 3 Rolling and heat treatment process parameters
[0038]
[0039] Table 4 Mechanical properties
[0040]
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Description & Claims & Application Information

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