Multi-element anti-oxidation and thermal abrasion resistant high-speed steel

A high-speed steel, anti-oxidation technology, applied in the field of metal material technology and manufacturing, can solve problems such as undiscovered tempering hardening properties, and achieve the effects of avoiding nucleation and growth, avoiding toughness deterioration, and high tempering hardness

Inactive Publication Date: 2017-12-26
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the iron addition content in this alloy design is limited to less than 35mol.%
After that, the applicant of the present invention tried to increase the content of Fe element to 50% in 2011, and found that laser cladding Fe 6 NiCoCrAlTiSi composition alloys also have a simple solid solution phase and high hardness, but no temper hardening properties are found in this composition

Method used

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  • Multi-element anti-oxidation and thermal abrasion resistant high-speed steel
  • Multi-element anti-oxidation and thermal abrasion resistant high-speed steel
  • Multi-element anti-oxidation and thermal abrasion resistant high-speed steel

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The M2 grade in the composition list in Table 1 is the typical composition of the commercialized tungsten-molybdenum W6Mo5Cr4V2 high-speed steel, and the components numbered 1 to 11 are the multi-component anti-oxidation, heat-resistant and wear-resistant high-speed steel prepared by laser cladding technology in this example. Among them, the content of matrix Fe element in No. 1-3 is different; No. 4-5 adds Ti alloy element on the basis of No. 1-2; No. 6-8 changes the content of C, and No. 9-11 changes respectively The content of W and Mo or the addition of Ni and Cu elements are selected. Sample preparation process: First, select Fe, Mo, W, Cr, V, Co, Ni, Cu, Al, Ti alloy powders with a purity of ≥99.5% and configure them according to the weight percentage. After configuring the above alloy elements, further Add C, Si, Mn and other elements, in which the contents of S and P elements are all 2 The cross-flow laser cladding the uniformly mixed multi-component high-speed ...

Embodiment 2

[0024] In this example, block high-speed steel was prepared by vacuum electric arc furnace melting and casting technology, and the given components are shown in Table 2. Among them, the grade M2 ​​is a typical composition of tungsten-molybdenum W6Mo5Cr4V2 high-speed steel, and the samples numbered 1 to 4 are the multi-component anti-oxidation, heat-resistant and wear-resistant high-speed steel components prepared by vacuum electric arc furnace melting technology in this embodiment. The selected alloy elements are configured according to weight percentage, and the content of S and P elements in each configuration composition is less than 0.04%, and Si and Mn elements are not added to the composition of this implementation. Sample preparation process: first, cut raw materials from the base metal with a purity of ≥99.5%, and use mechanical grinding to remove the scale on the surface of the raw metal; then, use an electronic balance with an induction capacity of 0.1mg to weigh the ...

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Abstract

The invention discloses multi-element anti-oxidation and thermal abrasion resistant high-speed steel and belongs to the field of metal material technology and manufacturing. The high-speed steel comprises the main required chemical elements of, by weight, 0.7%-1.2% of C, 70%-82% of Fe, 6%-7% of W and 3%-5% of Mo; Cr, V, Co and Al elements further need to be added in equimolar ratio or approximately equimolar ratio; and 0.5%-3.5% by weight of one to three of alloy elements of Ni, Cu and Ti need to be selectively added. Compared with tungsten-molybdenum system W6Mo5Cr4V2 high-speed steel prepared under the same conditions, the main phase structure of the multi-element anti-oxidation and thermal abrasion resistant high-speed steel after solidification is a high-hardness martensite matrix, retained austenite and little tiny carbide, the tempering hardness, oxidation resistant performance and thermal abrasion resistant performance of the high-speed steel are all obviously preferable, therefore the multi-element anti-oxidation and thermal abrasion resistant high-speed steel can be applied to the field of materials such as hot rollers and cutting tool moulds which have high requirements for high hardness and high-temperature abrasion resistance.

Description

technical field [0001] The invention belongs to the field of metal material technology and manufacture, and specifically relates to a multi-component anti-oxidation, heat-resistant and wear-resistant high-speed steel and a preparation method thereof. Background technique [0002] High-speed steel is a high-carbon high-alloy steel containing tungsten, molybdenum, chromium, vanadium and other strong carbide-forming elements. Typical components are tungsten-based high-speed steel W18Cr4V. After proper heat treatment, it has excellent red hardness, tempering hardness and heat wear resistance, and is widely used in the field of abrasive tools, knives, cutting tools, hot rolls and surface coating manufacturing of such materials. [0003] The wear resistance of high-speed steel mainly comes from its high-hardness martensite matrix and carbide hard precipitates. The more carbide content, the finer the size, and the more uniform the distribution, the better the wear resistance. In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42C22C38/50C22C38/46C22C38/44C22C38/52C22C38/20C22C38/22C22C38/24C22C38/28C22C38/30C22C38/06C22C38/04C22C38/02C21D6/00
CPCC22C38/42C21D6/002C21D6/004C21D6/005C21D6/007C21D6/008C22C38/02C22C38/04C22C38/06C22C38/20C22C38/22C22C38/24C22C38/28C22C38/30C22C38/44C22C38/46C22C38/50C22C38/52
Inventor 张晖
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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