Large alloy steel casting
A technology of alloy steel and castings, which is applied in the field of large alloy steel castings, can solve the problems of casting surface cracks, low casting yield, large wall thickness difference, etc., and achieve good mechanical properties, good surface quality, and high yield.
Inactive Publication Date: 2016-03-02
常熟市虹桥铸钢有限公司
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Abstract
The invention discloses a large alloy steel casting being a large machine tool casting; the large machine tool casting is prepared by performing low-pressure casting for high-strength stainless casting steel; and the low-pressure casting process comprises the steps of: (a) smelting of stainless casting steel solution: the high-strength stainless casting steel is put in a high-temperature smelting furnace for smelting molten steel, and comprises the following components in percentage by mass: 0.02-0.06% of carbon, 0.7-1.5% of silicon, 0.5-1% of manganese, 0.02-0.05% of phosphorus, 0.01-0.02% of sulfur, 15-18% of chronium, 3-6% of nickel, 0.03-0.06% of titanium and the balance of iron; (b) preheating and casting of a mold; (c) low-pressure molding by casting; and (d) pressure relief demolding. Through the mode, the casting is excellent in surface quality, high in yield and excellent in mechanical performance.
Technology Topic
Low pressure moldingMachine tool +12
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