Shield-arc welding device with aerating device inside tube
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 浙江天力久田管业有限公司
- Publication Date
- 2009-07-22
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of gas shielded welding, and in particular relates to a gas shielded welding device with an inflatable device in a pipe. Background technique
[0002] When performing gas shielded welding on pipes, the traditional method is to connect two pipes to each other, plug one end with a plug, and open the other end, and fill the whole pipe with shielding gas for air replacement. However, due to certain materials When the pipeline is welded, the oxygen content requirement is very low, and this method of blocking one end and opening the other is difficult to meet the requirements; in addition, if the existing plug encounters pipeline elbows, tees and other pipelines, it is difficult to install and remove; At the same time, this method of filling the shielding gas in the whole process for gas shielded welding consumes a large amount of shielding gas, and the waste is serious, which is not conducive to reducing the cons...