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High-speed steel for high-strength wear-resistant cutting tools

A high-speed steel and cutting tool technology, applied in the field of cutting tool steel, can solve problems such as reducing production costs, and achieve the effects of improving hardenability, reducing production costs, and improving performance indicators

Active Publication Date: 2017-11-21
安徽科凌仪器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-speed steel hopes to reduce the production cost by reducing the content of alloy elements, but because the high-speed steel is the same as W6Mo5Cr4V2 steel, the content of precious metal elements Mo, W, and V is relatively high, so the production cost has not been reduced in a real sense

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-strength and wear-resistant high-speed steel for cutting tools. The chemical composition (weight%) of the steel is: 1.35%C, 0.60%Si, 1.15%Mn, 5.80%Cr, 3.40%Mo, 1.05%V, 0.55%Nb, 0.02% Ti, 1.65% W, 0.03% Re, 0.0010% B, 0.055% N, ≤0.015% S, ≤0.015% P, and the rest are iron Fe and unavoidable impurities.

[0025] After the materials in the above examples are quenched at 1100-1200 degrees and tempered three times at 500-580 degrees, the hardness reaches HRC65-70, and the metallographic structure is tempered needles and fine and uniform carbides. The material has excellent mechanical properties and wear resistance, and is obviously superior to existing similar materials.

Embodiment 2

[0027] A high-strength and wear-resistant high-speed steel for cutting tools. The chemical composition (weight%) of the steel is: 1.45%C, 0.70%Si, 1.25%Mn, 6.20%Cr, 3.60%Mo, 1.10%V, 0.65%Nb, 0.03% Ti, 1.75% W, 0.05% Re, 0.0025% B, 0.065% N, ≤0.015% S, ≤0.015% P, and the rest are iron Fe and unavoidable impurities.

[0028] The material in the above embodiment has been subjected to high-temperature quenching and tempering treatment three times, the hardness reaches HRC58-62, and the metallographic structure is tempered needles and fine and uniform carbides. The material has excellent mechanical properties and wear resistance, and is obviously superior to existing similar materials.

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Abstract

A high-speed steel for high-strength and wear-resistant cutters is composed of, by weight, 1.2-1.6% of C, 0.55-0.85% of Si, 1.10-1.30% of Mn, 5.50-6.50% of Cr, 3.40-4.40% of Mo, 1.05-1.15% of V, 0.50-0.70% of Nb, 0.02-0.04% of Ti, 1.60-1.90% of W, 0.03-0.05% of Re, 0.0008-0.003% of B, 0.05-0.09% of N, P smaller than or equal to 0.015%, S smaller than or equal to 0.015% and the balance Fe and inevitable impurities. The high-speed steel is high in strength, good in wear resistance, thermal hardness and machinability and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of cutting tool steel, and in particular relates to a high-strength and wear-resistant high-speed steel for cutting tools. Background technique [0002] Cutting tool materials have been widely used in human production and life since the birth of human beings. With the progress of society and the improvement of production and processing automation, the performance requirements, processing requirements and use requirements of cutting tool materials are increasing day by day. [0003] At present, high-strength wear-resistant cutting tool steel often uses W6Mo5Cr4V2 high-speed steel. The carbides of W6Mo5Cr4V2 high-speed steel are fine and uniform, so it has good comprehensive performance. The hardness is 62-67HRC. The bending resistance is 2-3 times that of ordinary hard alloys and 5-6 times that of ceramics. It also has good wear resistance. , Heat resistance, it can still be cut when the cutting temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/12C22C38/14C22C38/04C22C38/02
CPCC22C38/001C22C38/005C22C38/02C22C38/04C22C38/12C22C38/14C22C38/18C22C38/32
Inventor 任庆华
Owner 安徽科凌仪器股份有限公司
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