Brazing Processing Method of Inner Channel of Aluminum Parts

Abstract

The invention relates to an aluminum part internal channel brazing method and belongs to the technical field of metal machining. The aluminum part internal channel brazing method comprises the steps that firstly, aluminum parts and composite brazing filler metal are machined and cleaned, so that the welding surfaces of the aluminum parts are flat, oxide layers and dirt of the aluminum parts and the composite brazing filler metal are removed so that good connection between the aluminum parts subjected to brazing can be guaranteed, and then the sealing performance of internal channels in the aluminum parts is ensured; next, the aluminum parts and the composite brazing filler metal are assembled, fixed and placed into a vacuum brazing furnace, the temperature is raised to the melting point of the composite brazing filler metal by means of controlling the temperature of the vacuum brazing furnace and detecting the temperature of the aluminum parts through a workpiece coupler, and then brazing is completed. Meanwhile, by the adoption of the aluminum part internal channel brazing method, the machining process is simple, the cost is low, and the application range is rather wide.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to the technical field of welding processing, in particular to a brazing processing method for inner channels of aluminum parts. Background technique [0002] When the gas uniform injection mechanism is working, it will inject a large amount of various gases with temperature. When the gas moves upwards uniformly, there will be a big difference between the temperature of the upper end and the lower end of the part (higher temperature at the upper end and lower temperature at the lower end). To ensure temperature consistency, such as figure 1 As shown, a water tank 1 must be designed on the upper end of the part to circulate and cool water through one end and the other end to achieve temperature consistency. [0003] Conventional cooling channels for aluminum parts adopt the following design: [0004] 1. Copper tube method [0005] The copper material itself has good heat ...

AI Technical Summary

Problems solved by technology

[0007] The argon arc welding performance of aluminum itself is not very good. If it is sealed welding, the weld height is usually greater than 4mm, and there is a black oxide layer on the surface, and the appearance has obvious color difference. Since the argon arc welding should be very large, some tests have shown that there is a small possibility It will be sealed at the time of welding, and there will be leakage after a period of use, which has a certain risk

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