Electromagnetic four-way valve main valve seat processing method

Abstract

The present invention discloses a method for processing a main valve seat used on a four-port electromagnetic valve, which includes round brass blanking, hot-forging forming, edge trimming, leveling, destressing, plane chamfering, die stamping, chambering, chamfering, deburring and other steps. After being directly blanked, round brasses are thermally forged to form a blank, the hot-forging technique utilizes mechanical kinetic energy to disarrange and then rearrange the molecular crystallization state of the brass rods, so that the molecules of the brass rods can be combined more tightly, the crystallization state can become more stable and the capability of resisting the interference of outer force can be enhanced, thereby, the main valve seat can operate under high-pressure, high-temperature and cold conditions for a long time and cannot easily deform, a cavity can be effectively sealed, and the normal reversion of a four-port reversing valve can be ensured. After the forging forming process is adopted, the step of rolling the brass into a deformed sectional material is omitted, thereby, scraps produced during processing are greatly reduced, materials are saved, and the cost of the product is reduced.

Description

【Technical field】 [0001] The invention relates to an electromagnetic four-way valve in an air-conditioning system, in particular to a processing method for a main valve seat of an electromagnetic four-way reversing valve in a heat pump air conditioner. 【Background technique】 [0002] The structure of the electromagnetic four-way reversing valve in the heat pump air conditioner is as follows: figure 1 As shown, the main valve seat 2 is welded on the main valve body 1, and the connecting pipe 3 is welded in the hole of the main valve seat 2. The main valve seat 2 cooperates with the slider 4 to close the cavity to change the flow direction of the refrigerant to realize the cooling and heat reversing function of the air conditioner. like figure 2 is the schematic front view of the structure of the main valve seat; image 3 It is the schematic left view of the structure of the main valve seat. [0003] At present, the processing method of the main valve seat is as follows: ...

AI Technical Summary

Problems solved by technology

[0004] 1. The connection between molecular crystals is not firm, and it is easy to be deformed by heat and pressure;

[0005] 2. The main valve seat exists under high pressure, high heat, and low cold environmental conditions for a long time, and the deformed main valve seat will lose the function of closing the cavity, which often leads to reversing failure and affects the normal use of the product;

[0006] 3. A large amount of material waste will be generated in the process of rolling brass into special-shaped copper rods, drilling, turning, etc., and the waste of materials is serious, and the price of brass materials is high, resulting in very high product costs

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