Air-cooled hardened steel plate with ultra-high strength, high toughness and ultra-fine structure and preparation process of air-cooled hardened steel plate
An ultra-high-strength, microstructure technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of strict sample size and equipment requirements, unfavorable large-scale industrial production, unfavorable environmental protection and other problems, to promote micro-stress Strain distribution, excellent comprehensive mechanical properties, fine grain size effect
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[0036] Example 1
[0037] A preparation method of an air-cooled hardened steel plate with ultra-high strength, high toughness and ultra-fine microstructure, such as figure 1 The steps are as follows:
[0038] (1) Alloy smelting: The chemical composition mass percentage of the alloy is: C: 0.08%, Si: 0.1%, Mn: 0.2%, Cr: 10%, W: 2.0%, Co: 2.0%, V: 0.1%, Nb : 0.025%, N: 0.03%, Ta: 0.05%, Nd: 0.02%, B content is controlled below 0.0005%, and the remaining components are Fe and inevitable impurities; after the ingredients are loaded into the furnace, the vacuum induction furnace Stir the smelting evenly, check and adjust the composition before the furnace to meet the requirements, and then cast it into an ingot. The smelting method can adopt any one or a combination of vacuum electric arc furnace smelting, vacuum induction plus electroslag redissolving, vacuum smelting plus vacuum self-consumption, and vacuum electric arc furnace smelting is adopted in this embodiment;
[0039] ...
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[0044] Example 2
[0045] A preparation method of an air-cooled hardened steel plate with ultra-high strength, high toughness and ultra-fine microstructure, the steps of which are as follows:
[0046] (1) Alloy smelting: The chemical composition mass percentage of the alloy is: C: 0.08%, Si: 0.35%, Mn: 0.8%, Cr: 15%, W: 3.0%, Co: 3.0%, V: 0.3%, Nb : 0.08%, N: 0.06%, Ta: 0.1%, Nd: 0.04%, the B content is controlled below 0.0005%, and the remaining components are Fe and inevitable impurities; according to the above ingredients, the ingredients are loaded into the furnace and placed in a vacuum induction furnace. Stir the smelting evenly, check and adjust the composition before the furnace to meet the requirements, and then cast it into an ingot. The smelting method can be any one or a combination of vacuum arc furnace smelting, vacuum induction plus electroslag redissolving, vacuum smelting plus vacuum self-consumption;
[0047] (2) homogenization treatment and blanking are th...
Example Embodiment
[0053] Example 3
[0054] A preparation method of an air-cooled hardened steel plate with ultra-high strength, high toughness and ultra-fine microstructure, the steps of which are as follows:
[0055] (1) Alloy smelting: The chemical composition mass percentage of the alloy is: C: 0.08%, Si: 0.25%, Mn: 0.4%, Cr: 12%, W: 2.5%, Co: 2.5%, V: 0.2%, Nb : 0.05%, N: 0.04%, Ta: 0.08%, Nd: 0.03%, the B content is controlled below 0.0005%, and the remaining components are Fe and inevitable impurities; according to the above ingredients, the ingredients are loaded into the furnace and placed in a vacuum induction furnace. Stir the smelting evenly, check and adjust the composition before the furnace to meet the requirements, and then cast it into an ingot. The smelting method can be any one or a combination of vacuum arc furnace smelting, vacuum induction plus electroslag redissolving, vacuum smelting plus vacuum self-consumption;
[0056] (2) homogenization treatment and blanking are t...
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