Pump body die casting welding method

Abstract

Provided is a pump body die casting welding method. The pump body die casting welding method includes the following steps that 1 a die casting is machined and polished until the phenomena of burrs, die drawing, excessive materials and misrun do not exist in a concave groove of the die casting; 2 a flawless insert is taken, and the periphery of a convex groove of the insert is coated with grease; 3 a sealing ring is added to the insert after the insert is coated with the grease, and the convex groove is fixed; 4 the insert is struck to enter the concave groove, wherein the insert is lower than the outside plane of the concave groove; 5 the size of the die casting is corrected, and the surface of the die casting is polished; 6 the die casting is placed on a laser welding machine, laser welding is conducted on the die casting, and leakage testing is conducted on the die casting after welding is completed. According to the pump body die casting welding method, polishing, insert machining and welding are conducted on a pump body formed in a die-casting mode, the surface of the pump body formed in the die-casting mode is smooth and free of burrs, the formed pump body is more complete in structure, defects formed in the die pressing process are well overcome, and the qualified pump body is machined and obtained.

Description

technical field [0001] The invention relates to the treatment process after the pump body die-casting is formed, in particular to a welding method for the pump body die-casting. [0002] Background technique [0003] The strength, hardness, tensile strength and elongation of the pump body formed by casting in the prior art are not enough to meet the technical requirements of the pump body. [0004] However, the pump body made by die-casting technology usually has more burrs on the surface, which is not smooth enough, and pores are easily formed inside the pump body, which affects the quality of the body. Contents of the invention [0005] The invention provides a method for welding pump body die castings, which comprises the following steps: [0006] S1: Process and polish the die-casting parts until there are no burrs, dies, fleshy and missing meat in the groove of the die-casting parts; [0007] S2: Take a non-defective insert, and apply butter around the convex gro...

AI Technical Summary

Problems solved by technology

[0004] However, the pump body made by die-casting technology usually has more burrs on the surface, which is not smooth enough, and it is easy to form pores inside the pump body, which affects the quality of the body.

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