New energy vehicle air-conditioning compressor static disc two-step forming method

Abstract

The invention discloses a two-step molding method for a stationary disc of an air conditioner compressor of a new energy automobile. The method is characterized by comprising the steps that after a blank is obtained by blanking and is treated, firstly, the blank is placed in a preforging mold for preforging blank making, so that the blank is molded into a workblank with a preforging outer ring of the preset height; and then, the workblank is placed into a finish forging mold, and the stationary disc is extrusion-molded through backpressure. According to the two-step molding method, the prefabricated blank obtained through preforging is provided with the preforging outer ring of a certain height, the guiding effect of the preforging outer ring is effectively utilized in the finish forging molding process, and flowing speed of metal of the outer ring is effectively increased; it is guaranteed that when molding is ended, the height and flatness of the outer ring meet requirements; and by means of the method, the service life of the mold is prolonged, part molding precision is high, and strength is high.

Description

technical field [0001] The invention relates to the field of metal plastic forming, more specifically to a forming method and a forming die for a static disk of an air-conditioning compressor of a new energy vehicle. Background technique [0002] The scroll compressor has the advantages of compact structure, energy saving and high efficiency, low vibration and low noise, and reliable operation. It is widely used in air conditioners of new energy vehicles. The scroll disk is the core component of the scroll compressor. The quality of the static plate is directly related to whether the car air conditioner can work normally. [0003] The traditional scroll disk has no outer ring, and only the scroll body with the same height is placed on the base, and the dynamic and static disks cooperate with each other and are placed in the compressor housing. Commonly used processing methods include gravity casting, liquid die forging, machining, low pressure casting and back pressure extr...

AI Technical Summary

Problems solved by technology

Since the height and thickness of the outer ring of the static disk are greater than that of the scroll body in the middle, when the back pressure is extruded once, the metal flow speed of the scroll body in the middle is fast, and the metal flow speed of the outer ring of the static disk is slow. The height of the outer ring of the disk is difficult to meet the requirements. On the other hand, when the height of the scroll body reaches the requirement, the metal begins to form burrs, which leads to a sharp increase in the stress of the scroll through hole of the final forging die, which is prone to fracture and failure. This situation has seriously affected the forming quality and mass production of static discs

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