High-toughness high-wear-resistance cold work die steel and manufacturing process thereof
A cold work die steel and production process technology, applied in the field of wear-resistant steel, can solve the problems of poor toughness and service life of die steel, and achieve the effect of increasing hardenability, improving structure refinement, and increasing strength and hardness
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[0041] Example
[0042] A production process of high toughness and high wear-resistant cold work die steel, comprising the following steps:
[0043] S1: By mass percentage, will contain 0.75%-0.9% C, 0.14%-0.20% Si, 0.5%-0.6% Mn, 0.9%-1.1% Mo, 0.4%-0.6% Cr, P≤0.02%, S 100kg scrap steel with ≤0.02% is added to the furnace for smelting, and then low nitrogen carbon powder, deoxidizer, silicon manganese, ferrosilicon, high carbon ferrochromium, titanium, copper, tungsten, vanadium, niobium, rare earth yttrium are added to the furnace in turn . Use aluminum strips for deoxidizer. After the charge is completely melted, when the temperature of molten steel is ≥1590 °C, use low-pressure deep oxygen blowing method, flow slag to remove Si and Mn, fully stir and sample and analyze to meet the requirements. White ash, the added amount of white ash is 0.25-0.3% of the total amount of materials in the converter.
[0044] S2: LF refining: transfer the molten steel in S1 to the LF furnace ...
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