Manufacturing method of steel for speed reducer gear of electric automobile
A technology for electric vehicles and manufacturing methods, applied in the direction of improving process efficiency, can solve the problem of high production cost, and achieve the effects of small stress concentration, high strength, and uniform plastic deformation
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[0046] The concrete steps of embodiment 1 and comparative example 2 are:
[0047] 1. Steelmaking
[0048] 1) The primary smelting furnace uses high-quality molten iron, and the proportion of high-quality molten iron is 20-60%; the rest is high-quality scrap steel. During the initial smelting process, the relationship between the amount of oxygen blown into the molten steel and the heat supply is controlled: the amount of oxygen blown into the molten steel is 50%. Cubic meters -85 cubic meters, the power supply per ton of steel is 150-400 degrees.
[0049] , reduce P and residual elements in molten steel.
[0050] 2) Control of key points in the smelting and tapping process of the primary furnace: focus on controlling the carbon at the end point of the primary furnace when tapping is not less than 0.05% to prevent the overoxidation of molten steel.
[0051] 3) LF furnace refining: After the LF furnace is powered on, argon gas is blown at the bottom of the whole process, and t...
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