Low-pressure mold filling and high-pressure solidifying casting device and casing method for low-pressure supercharged casting machine
A low-pressure casting machine and casting machine technology, which are used in high-pressure solidification forming casting devices and low-pressure controllable filling fields, can solve the problem of insufficient liquid metal feeding, unsatisfactory casting density, strength and toughness, etc. question
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[0109] Example 1:
[0110] Installing the low-pressure filling and high-pressure solidification casting device of the present invention on the BH-1 type low-pressure pressurized casting machine to perform low-pressure pressurized casting on the high-speed rail engine motor shell casting includes the following steps:
[0111] (1) The aluminum alloy is prepared according to a certain proportion, the specific mass percentages are: Si: 7.2%, Mg: 0.65%, Fe: 0.20%, Mn: 0.1%, Ti: 0.13%, Sr: 0.02%; Cu: 0.03 %, RE: 0.005%, Nb: 0.05%; Cr: 0.008%, Zr: 0.012%, B: 0.009%, Nd: 0.005%, Ni: 0.008%, Zn: 0.008%, and the balance is Al. After the alloy is melted in the melting furnace, add Al-5Ti-B refiner and Al-10Sr modifier at 760℃ for refinement and modification, and add self-sinking non-polluted refining agent at 740℃ for degassing After refining for 30 minutes and standing for 30 minutes, the slag is removed and the chemical composition samples are taken. After the composition is qualified, the...
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[0119] Example 2:
[0120] Installing the low-pressure filling and high-pressure solidification casting device of the present invention on the BH-1 type low-pressure pressurized casting machine to perform low-pressure pressurized casting on the automobile subframe casting includes the following steps:
[0121] (1) The aluminum alloy is prepared according to a certain proportion, the specific mass percentages are: Si: 6.8%, Mg: 0.35%, Fe: 0.20%, Mn: 0.1%, Ti: 0.15%, Sr: 0.03%; Cu: 0.10 %, RE: 0.15%, Nb: 0.05%; Cr: 0.005%, Zr: 0.01%, B: 0.008%, Nd: 0.008%, Ni: 0.005%, Zn: 0.005%, and the balance is Al. After the alloy is melted in the melting furnace, add Al-5Ti-B refiner and Al-10Sr modifier at 760℃ for refinement and modification treatment, and add self-sinking non-polluted refining agent at 720℃ for degassing Refining for 40 minutes, standing for 20 minutes, slag off, take the chemical composition sample, after the composition is qualified, the molten aluminum alloy liquid is tra...
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[0129] Example 3:
[0130] Installing the low-pressure filling and high-pressure solidification casting device of the present invention on the BH-1 low-pressure pressurized casting machine to perform low-pressure pressurized casting on the barrel-shaped motor shell casting includes the following steps:
[0131] (1) The aluminum alloy is prepared according to a certain ratio, and the specific mass percentages are: Si: 7.2%, Mg: 0.55%, Fe: 0.18%, Mn: 0.05%, Ti: 0.12%, Sr: 0.015%; Cu: 0.01 %, RE: 0.002%, Nb: 0.01%; Cr: 0.005%, Zr: 0.01%, B: 0.005%, Nd: 0.005%, Ni: 0.005%, Zn: 0.005%, and the balance is Al. After the alloy is melted in the melting furnace, add Al-5Ti-B refiner and Al-10Sr modifier at a temperature of 755℃ for refinement and modification treatment, and add a self-sinking non-polluted refining agent at 740℃ for degassing After refining for 20 minutes, leaving for 30 minutes, the slag is removed, and the chemical composition samples are taken. After the composition is qu...
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