High malleable high wear-resisting cold process mould steel
A technology of cold work die steel and high wear resistance, applied in the field of cold work die steel, can solve the requirement of long service life that cannot meet the precision requirements of the die, the hardness, toughness and wear resistance are low, and no good mold is obtained. Co-ordination and other issues, to achieve the effect of a wide range of molds, excellent comprehensive performance, and reduced material costs
Inactive Publication Date: 2007-07-18
HEYE SPECIAL STEEL
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After adopting such a technical scheme, its hardness reaches HRC58-62, and its impact toughness is greater than 30J. However, since the die steel does not contain W, the utilization of scrap steel resources in production is limited, the cost is high, and V, Nb , C have not been well matched, making its hardness, toughness and wear resistance slightly lower, and the overall performance is slightly worse, which is increasingly unable to meet the requirements of modern manufacturing for higher and higher mold precision and longer service life.
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[0018] The present invention will be described in further detail below in conjunction with specific embodiments:
[0019] The smelting raw materials of the steel in the embodiment are: high-speed steel, die steel return material, industrial pure iron, ferro tungsten, ferromolybdenum, ferrochrome, ferrovanadium, ferro-niobium, etc., after 3 tons of intermediate frequency + electroslag remelting → steel ingot → fast forging , Deformation of precision forging machine→square billet→rolling mill finished product→annealing→finishing→φ45mm round steel is the finished product.
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The present invention relates to one kind of high toughness and high wear resistance cold-work die steel, which includes C 0.95-1.15 wt%, Si 0.20-1.20 wt%, Cr 6.50-8.00 wt%, Mo 1.00-2.00 wt%, V 1.80-2.60 wt%, W 0.50-1.50 wt%, Nb 0.10-1.00 wt%, Mn 0.20-0.50 wt%, and Fe and impurity for the rest. The cold-work die steel has high wear resistance, high strength, high toughness, high hardness, high tempering stability and other features, and may be used in replacing M2 high speed die steel for lowering cost.
Description
Technical field [0001] The invention relates to a cold work die steel, in particular to a high toughness and high wear resistance cold work die steel. Background technique [0002] Mould is an important means to increase productivity, reduce material consumption, reduce costs, and improve product quality and market competitiveness. With the continuous development of industrial technology, molds are required to be used under more demanding and higher-speed working conditions, and molds are required to have higher precision and longer service life. At present, domestic mold steel has reached about 400,000 tons, but due to variety and quality, domestic mold steel cannot meet the requirements, and a large amount of foreign mold steel is imported about 80,000 tons per year. The production and use of new steel grades and varieties are very small, accounting for only 2 to 3% of the annual production of die steel. [0003] There are many grades of high-strength and wear-resistant steel, ...
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IPC IPC(8): C22C38/26
Inventor 张占普吴立志马党参
Owner HEYE SPECIAL STEEL