Fabrication process of semi-solid copper alloy multi-channel valve body by radial forging strain induction method

Abstract

The process of preparing semi-solid copper alloy multi-channel valve body by radial forging strain induction method, first preheating the copper alloy rod, and then radially forging the copper alloy rod, the secondary remelting of the blank after radial forging, and then performing Semi-solid thixotropic die forging of copper alloy multi-channel valve body until the parts are completely solidified. Through this process, uniform copper alloy semi-solid blanks without microscopic defects can be prepared and formed with less microstructure defects, good mechanical properties, and sealing The multi-channel valve body with strong performance has less production process and high productivity.

Description

technical field [0001] The invention belongs to the technical field of metal semi-solid processing and forming, and in particular relates to a process for preparing a semi-solid copper alloy multi-channel valve body by a radial forging strain induction method. Background technique [0002] The copper alloy multi-channel valve body is mainly used for frequent closing and opening of pipelines in the pipeline system, which requires high mechanical strength and sealing performance. The shape of the valve body is relatively complicated. The traditional process methods are hot forging and hot extrusion. However, the oxidation and thermal expansion of the material blank at high temperature make the hot forging process unable to guarantee the quality of the formed parts, and the large flash margin leads to The material utilization rate is low, there are many subsequent machining processes, and the mold forming load is large, the life is short, the energy consumption is large, and th...

AI Technical Summary

Problems solved by technology

However, the process of preparing semi-solid slurry by conventional mechanical stirring method and electromagnetic stirring method has the following disadvantages: high temperature has a serious corrosion effect on the mechanical stirrer, and the mixing of corrosion residue and semi-solid slurry results in impure slurry

When preparing large billets, the plastic deformation force required by these methods is too large, which is difficult to achieve with existing equipment

Therefore, large-scale semi-solid blanks cannot be produced in large quantities, so they cannot be directly used to produce relatively large and complex-shaped parts such as multi-channel valve bodies.

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