Novel process for double medium oil-air quenching of alloy wear resistant casting
A dual-media and casting technology is applied in the field of quenching process of alloy steel and alloy wear-resistant castings, which can solve the problems of difficult oil quenching process, impermeability of quenching and high production cost, so as to overcome the problem of quenching cracks and improve comprehensive mechanical properties. , the effect of reducing production costs
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Embodiment 1
[0019] The workpiece to be quenched is an alloy wear-resistant cast ball with a diameter of 6mm.
[0020] The first process: put the alloy wear-resistant cast balls heated to the quenching temperature of 920°C out of the heat treatment furnace, place them in the quenching cradle, and spread them evenly;
[0021] The second process: Shake the quenching cradle to make the quenching cradle move up and down, so that the alloy wear-resistant casting can roll freely on it;
[0022] The third process: immerse the quenching cradle in the quenching oil pool, and perform oil-cooling quenching treatment on the alloy wear-resistant castings. The quenching medium is No. 10 engine oil. The oil temperature during quenching is controlled at 25-90°C. At the same time, stir with strong wind Oil pool, the control air volume is 1800m 3 / min, the wind pressure is 5000Pa;
[0023] The fourth process: When the surface temperature of the alloy wear-resistant casting drops below 600°C, raise the que...
Embodiment 2
[0027] The workpiece to be quenched is an alloy wear-resistant cast ball with a diameter of 50mm.
[0028] The first process: put the alloy wear-resistant casting balls heated to the quenching temperature of 980°C out of the heat treatment furnace, place them in the quenching cradle, and spread them evenly;
[0029] The second process: Shake the quenching cradle to make the quenching cradle move up and down, so that the alloy wear-resistant casting can roll freely on it;
[0030] The third process: immerse the quenching cradle in the quenching oil pool, and carry out oil-cooling quenching treatment on the alloy wear-resistant castings. The quenching medium is No. 20 engine oil, and the oil temperature during quenching is controlled at 25-90°C. Oil pool, the control air volume is 3000m 3 / min, the wind pressure is 8000Pa;
[0031] The fourth process: When the surface temperature of the alloy wear-resistant casting drops below 600°C, raise the quenching cradle so that the allo...
Embodiment 3
[0035] The workpiece to be quenched is an alloy wear-resistant cast ball with a diameter of 150mm.
[0036] The first process: put the alloy wear-resistant cast balls heated to the quenching temperature of 1100°C out of the heat treatment furnace, place them in the quenching cradle, and spread them evenly;
[0037] The second process: Shake the quenching cradle to make the quenching cradle move up and down, so that the alloy wear-resistant casting can roll freely on it;
[0038] The third process: immerse the quenching cradle in the quenching oil pool, and carry out oil-cooling quenching treatment on the alloy wear-resistant castings. The quenching medium is No. 20 engine oil, and the oil temperature during quenching is controlled at 25-90°C. Oil pool, the control air volume is 5000m 3 / min, the wind pressure is 10000Pa;
[0039] The fourth process: When the surface temperature of the alloy wear-resistant casting drops below 600°C, raise the quenching cradle so that the allo...
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