Transmission housing pouring method and sand casting mould used in transmission housing pouring method
A transmission housing and casting method technology, applied in the directions of casting molds, casting mold components, manufacturing tools, etc., can solve the problems of inability to guarantee product quality, high production costs, long debugging cycles, etc., and achieve reasonable filling sequence and flow direction, Low production cost and the effect of reducing casting defects
Active Publication Date: 2013-08-07
NINGBO HELI TECH CO LTD
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Problems solved by technology
At present, the existing transmission casing processing method is to dig out solid aluminum blocks, which has some disadvantages: the above processing method makes the transmission casing have large differences between products after mass production, the production is unstable, and the product cannot be guaranteed. quality; another transmission shell processing method is to open the soft film, the mass production is relatively stable, and the product quality is good, but its production cost is high, and the debugging cycle is long, making the delivery time slow
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[0022] The present invention will be further described below in conjunction with the accompanying drawings.
[0023] A transmission casing pouring method, which comprises the following steps: ①, casting aluminum liquid at 650-750°C to a sand casting mold, and the pouring time is 13-17s; ②, demoulding; ③, trimming; ④, Heating the trimmed transmission casing from normal temperature to 515-535°C, the heating time is 2-4 hours, and keeping it warm for 3-5 hours after the heating is completed; ⑤. Take out the transmission casing after the heat preservation is completed and quench it Cool to room temperature, the quenching medium is water, and the quenching time is 10-15 minutes; 6. Heat the quenched transmission housing from normal temperature to 160-180°C for the second time and keep it warm for 2-3 hours.
[0024] The casting material of the above-mentioned transmission case is AlSi10MgCu. The present invention adopts the method of sand casting and heat treatment, so that the pro...
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The invention relates to a transmission housing pouring method. The transmission housing pouring method comprises the following steps of: firstly, casting molten aluminum at 650-750 DEG C in a mould for 13-17 seconds; secondly, demoulding; thirdly, trimming; fourthly, heating a transmission housing after the trimming is finished to 515-535 DEG C from normal temperature for 2-4 hours, and keeping the temperature for 3-5 hours after the heating is finished; fifthly, taking out the transmission housing after the heat preservation is finished and quenching till room temperature, wherein the quenching medium is water, and the quenching lasts 10-15 minutes; and sixthly, secondarily heating the transmission housing after the quenching is finished to 160-180 DEG C from normal temperature and then keeping the temperature, wherein the heat preservation lasts for 2-3 hours.
Description
technical field [0001] The invention relates to an engine transmission, in particular to a casting method for a transmission casing and a sand casting mold used therein. Background technique [0002] The transmission is one of the most important components in the engine, and its structure is relatively complex, so it needs to ensure its high quality requirements. At present, the existing transmission casing processing method is to dig out solid aluminum blocks, which has some disadvantages: the above processing method makes the transmission casing have large differences between products after mass production, the production is unstable, and the product cannot be guaranteed. quality; another transmission shell processing method is to open the soft film, the mass production is more stable, and the product quality is better, but its production cost is high, and the debugging cycle is long, making the delivery time slow. Contents of the invention [0003] The technical proble...
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IPC IPC(8): B22C9/02B22C9/08B22C9/22C22F1/04
Inventor 姚杰蔡振贤王承伟蔡振权翁辉明樊未封
Owner NINGBO HELI TECH CO LTD