Automobile spring material with good brittleness resistance and good rupture resistance
A technology of brittle fracture and spring materials, which is applied in the field of auto parts, can solve the problems of dispersion and density value that cannot be solved at the same time, restrict the large-scale development of the steel industry, and the quality stability is not high, so as to achieve high strength and prevent Oxidation, meet the effect of impact resistance
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[0013] A spring material for automobiles with good brittle fracture resistance is prepared according to the following steps:
[0014] a. Melting: Add low-sulfur phosphorus clean scrap steel into high-frequency induction melting furnace to melt into molten steel, then add recarburizer, wait for the temperature in the furnace to rise to 1500°C, add nickel, ferrosilicon and ferromanganese, and add after holding for 20 minutes After chromium, neodymium and cobalt are completely melted, add modified niobium carbide, raise the temperature to 1630°C, keep stirring at constant temperature for 5 minutes to obtain matrix alloy liquid;
[0015] b. Detection: Detect the component content of the matrix alloy liquid, add materials to make the elements by weight percentage: carbon: 0.3%, silicon: 0.2%, manganese: 1.8%, nickel: 1.2%, cobalt: 0.02%, aluminum : 0.002%, chromium 0.2%, neodymium: 0.01%, sulfur ≤ 0.015%, phosphorus ≤ 0.015%, the balance is iron and unavoidable impurities;
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