A positioning welding process for a cast titanium alloy connecting rod

Abstract

The invention relates to a fixed-position welding technique for use in the device manufacturing industry, which relates to a professional welding technique for a connecting rod in a reciprocating compressor, in particular to a fixed-position welding process for casting a titanium alloy connecting rod by using ZTC4. The fixed-position welding technique comprises the following steps of: casting a titanium alloy connecting rod by using ZTC4 in manual tungsten electrode argon arc welding, wherein a welding wire is a TA1 pure titanium welding wire, the diameter of the welding wire is phi2.4 millimeters, and the polarity of a power supply belongs to direct-current positive connection; and processing bolt holes in both sides of the connecting rod, and then removing a fixed-position welding spot by processing, wherein process parameters of a welding process are that the welding current is 170-180A; the welding voltage is 12-14V; the protective gas is 99.9% Ar gas; the diameter of a tungsten electrode is 2.4 millimeters; and the gas flow is 10-15L / min. According to the fixed-position welding technique, fixed-position welding is adopted for ensuring the accuracy requirement of connecting rod processing, so that the processing technical requirements, processing accuracy requirement and processing quality requirement of the titanium alloy connecting rod are met, welding is qualified at one time, the manufacturing quality of the reciprocating compressor is enhanced, the production efficiency is increased, and the manufacturing cost of the titanium alloy connecting rod is reduced.

Description

technical field [0001] The invention relates to the positioning welding technology in the equipment manufacturing industry, which is the welding professional technology of the connecting rod in the reciprocating compressor, specifically, the positioning welding process of the ZTC4 casting titanium alloy connecting rod. Background technique [0002] The reciprocating compressor is an electric high-pressure air-powered compressor unit used in naval construction, and the connecting rod is an important part to realize reciprocating motion in the compressor. The connecting rod is composed of the connecting rod body, the upper bearing of the connecting rod and the lower bearing of the connecting rod. The material of the connecting rod is ZTC4 cast titanium alloy; And the holes of the three parts of the lower bearing of the connecting rod are concentric to meet the technical requirements for the parallelism of the bolt holes on both sides. [0003] The welding of the original ZTC4...

AI Technical Summary

Problems solved by technology

This positioning welding process solves the problem that the holes of the connecting rod body, the upper bearing of the connecting rod and the lower bearing of the connecting rod are concentric and the bolt holes on both sides are parallel to each other in one-time processing of the cast titanium alloy connecting rod, which ensures the processing quality and avoids the turnover of workpieces , reducing production costs

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