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High-carbon high-vanadium wear-resistant steel and preparation method thereof

A wear-resistant steel and high-vanadium technology is applied in the field of high-carbon and high-vanadium wear-resistant steel and the preparation of high-carbon and high-vanadium wear-resistant steel. Wide range, improved wear resistance and toughness, low cost effect

Inactive Publication Date: 2018-08-17
HEYE SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN104878304B discloses a spray-formed wear-resistant and corrosion-resistant tool steel. Although this tool steel has significantly improved wear resistance and corrosion resistance compared with other high-speed steels, its wear resistance and hardness still need to be improved. Therefore, its application is limited to a certain extent

Method used

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  • High-carbon high-vanadium wear-resistant steel and preparation method thereof
  • High-carbon high-vanadium wear-resistant steel and preparation method thereof
  • High-carbon high-vanadium wear-resistant steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example involves a group of high-carbon and high-vanadium high-speed steel, the chemical composition of which is shown in Table 1.1:

[0042]Table 1.1 Example 1 high-carbon high-vanadium high-speed steel, its chemical composition is shown in Table 1.1:

[0043]

[0044]

[0045] Adopt the following preparation steps:

[0046] a. Prepare molten steel according to the above chemical composition requirements: smelt molten steel with qualified components through a smelting furnace, and then use the method of refining outside the furnace to remove inclusions and improve the purity of molten steel.

[0047] b. Steel ingots were prepared by spraying technology, and steel ingots with a diameter of 350-550 mm were prepared; the degrees of superheat in Examples 1.1-1.4 were set to 200, 210, 230 and 250° C. in sequence.

[0048] c. Steel ingot annealing: the steel ingot is annealed by waste heat annealing, kept at 800°C for 1-4h, then cooled to 700°C at a rate of 10°C / ...

Embodiment 2

[0053] This embodiment relates to the verification of the carbide content and particle size, heat treatment hardness, and wear resistance of the high-carbon, high-vanadium high-speed steel in Example 1, wherein the carbide content and particle size are analyzed based on the tissue image obtained by scanning electron microscopy, and the heat treatment hardness, wear resistance The performance is tested with reference to GB / T 230.1 and GB / T 12444-2006 respectively.

[0054] The high-carbon high-vanadium high-speed steel of embodiment 1.1,1.2 is compared with the high-carbon high-vanadium high-speed steel (alloy A) of purchase and the high-carbon high-vanadium high-speed steel (alloy B) of the powder metallurgy process, and the results are as follows:

[0055] Table 2.1 Comparison of the composition of Examples 1.1, 1.2 and Alloys A and B

[0056]

[0057] Table 2.2 Carbide content and particle size comparison between Examples 1.1 and 1.2 and alloys A and B

[0058]

[005...

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Abstract

The invention provides high-carbon high-vanadium wear-resistant steel. The high-carbon high-vanadium wear-resistant steel is prepared from the following chemical components in percentage by mass: 2.0to 3.0% of C, 3.5 to 5.0% of W, 2.0 to 4.0% of Mo, 4.0 to 5.0% of Cr, 7.0 to 9.0% of V, and the balance of iron; the carbide composition of the high-carbon high-vanadium wear-resistant steel is MC carbide and M6C carbide, wherein the type of the MC carbide is VC. The high-vanadium wear-resistant steel provided by the invention has a uniform microstructure, excellent wear resistance, hardness and processing structure property, and wide application. The cost of the preparation method provided by the invention is lower than that of a powder metallurgy process, and the production cost is reduced wholly.

Description

technical field [0001] The invention relates to high-speed steel, in particular to a high-carbon and high-vanadium wear-resistant steel. At the same time, the invention also relates to a preparation method of high-carbon and high-vanadium wear-resistant steel. Background technique [0002] High-speed steel is the abbreviation of high-speed tool steel. It is a compound with complex components. In addition to high carbon content, high-speed steel also has a large amount of alloy components such as W, Cr, V, and Mo; alloys and carbon elements form a large amount of Carbide makes high-speed steel have high hardness, high red hardness, high wear resistance and sufficient toughness, which greatly improves its cutting speed and brings about a revolution in the machine tool industry. [0003] With the continuous change of processed materials and the needs of production and processing, people continue to change the composition of high-speed steel, and there have been high-molybdenum...

Claims

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Application Information

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IPC IPC(8): C22C38/36C22C38/22C22C38/24C21D6/00C21D1/26C21D8/00B22D23/00
CPCC22C38/36B22D23/003C21D1/26C21D6/002C21D8/005C22C38/22C22C38/24
Inventor 杜文华默雄孙瑞谦张海军辛栋梅米永旺申春杰杨云峰
Owner HEYE SPECIAL STEEL
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