Casting method and mould for car air conditioning compressor slanting plate

Abstract

The invention provides a method for casting a swashplate of an automobile air-conditioning compressor and a mould thereof. The method comprises the steps: squeezing press is exerted to melt inside a feed room so as to cause the melt to flow into a die cavity stably from the side surface through a pouring channel; when the die cavity is filled with the melt, pressure-keeping press is exerted to the melt from one end vertical to the die cavity, feeding pressure is exerted to the center of the melt from the other end vertical to the die cavity before the melt is completely solidified and the pressure is canceled after maintained for 4-10s; the squeezing press is canceled after the melt at the connection part of a pouring channel and the die cavity is solidified; the pressure-keeping press is canceled after the melt is completely solidified; then a cast is fetched out by opening the die. The mould provided by the invention essentially comprises the sequentially communicated feed room, pouring channel and die cavity; the top and the bottom of the die cavity are respectively provided with a channel inside which a punch used for providing pressure to the top and the bottom of the die cavity is arranged. The aluminum alloy swashplate cast by the invention is compact and has small content of inner impurities, good shaped appearance, fine structure and no bubble in thermal treatment.

Description

Technical field

[0001] The present invention relates to the field of casting technology, in particular to a method for casting and forming an automobile air-conditioning compressor swash plate. technical background

[0002] Modern cars are all equipped with car air conditioners. "Compact structure, light weight, high efficiency, low power consumption, good reliability, and good cooling effect" has always been the goal of the development of car air conditioners. Air-conditioning compressors play a very important role in the performance of air-conditioning. At present, swash plate air-conditioning compressors are widely used in automobile air-conditioning. Due to the high speed of the air conditioner compressor in use (4000~5000rpm under normal conditions, up to 7000rpm), there are higher requirements for the swash plate, the key component of the swash plate air conditioner compressor. The swash plate with superior performance is not only light in weight, but also has high strength...

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