LD high-strength and high-toughness steel compound 40CRMO alloy structure steel
A technology of alloy structural steel, high strength and toughness, applied in the field of LD high strength and toughness steel compounded with 40CRMO alloy structural steel, can solve the problems of difficult promotion, high price, low qualified rate of finished products, etc.
Inactive Publication Date: 2017-02-22
上海新威加利工业刀具有限公司 +1
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Problems solved by technology
The 7CR7MO2V2SI material with higher strength, toughness and wear resistance is difficult to promote due to its high price, low qualified rate of finished products after heat treatment, and high cost
Method used
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[0013] The technical scheme adopted in the present invention is: combine the joint surfaces of LD high-strength toughness cold-work die steel and 40CRMO gold structural steel by sealing and wrapping them in 40CRMO, and compound them into plates through high-temperature and high-pressure metallurgy, and then according to different specifications Production of punching and shearing machine blades
[0014] Beneficial effects of the present invention: 7CR7MO2V2RI is developed by Shanghai Material Research Institute, referred to as LD high-strength toughness cold work die steel, after 1100-1150 degree hot oil quenching, the hardness is 57-63HRC, heat treatment distortion is small, and it is used for making shear steel plates The performance of industrial blades is better than that of W6MO5CR4V2 high-speed steel. It has higher strength, toughness and wear resistance. The service life is double or even ten times higher than that of the original steel types 9CRSI, 6CRW2SI, CR12MOV, W18...
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Abstract
The invention relates to a LD high-strength and high-toughness steel compound 40CRMO alloy structure steel, which comprises two materials such as a LD high-strength and high-toughness cold working mold steel and a 40CRMO alloy structure steel, and is characterized in that the bonding surface is sealed and wrapped in 40CRMO, a double metal compound plate is compounded through high temperature and high pressure metallurgy, a shear plate cutter blade is produced by using the double metal compound plate, the cutting edge part uses a LD high-strength and high-toughness cold working mold steel, the cutter body part uses a 40CRMO alloy structure steel, the hardness of the cutting edge is 57-63HRC after heat treatment, and the hardness of the cutter body part is HRC35-45. According to the present invention, the gold processing drill, the milling part and the planing part use the 40CRMO alloy structure steel, and the processing is easily performed after the heat treatment, such that the production efficiency and the product qualification rate are substantially improved, the use effect is not changed, and the material cost and the production cost are substantially reduced.
Description
[0001] Technical field: [0002] The invention relates to an industrial punching and shearing machine blade for shearing steel plates [0003] Background technique: [0004] At present, known commonly used 9CRSI, 6CRW2SI and CR12MOV industrial blades for shearing steel plates are integral single materials. The 7CR7MO2V2SI material with higher strength, toughness and wear resistance is difficult to promote due to its high price, low yield of finished products after heat treatment, and high cost. [0005] Invention content: [0006] In order to overcome the known above problems, the present invention uses its composition: C: 0.70-0.80; SI: 0.70-1.2; Mn: 0.30-0.50; Cr: 6.50-7.50; MO: 2.00-2.50; , 7CR7MO2V2RI material with S less than 0.03. This material is developed by Shanghai Materials Research Institute, referred to as LD high-strength and toughness cold-working die steel. After 1100-1150 degrees hot oil quenching, the hardness is 57-63HRC, and the heat treatment distortion i...
Claims
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IPC IPC(8): C22C38/24
Inventor 王荣根
Owner 上海新威加利工业刀具有限公司