The welding seal box of welded pipe equipment has a positive effect on the improvement of welding quality, but other factors need to be considered when using, so as to ensure the sustainable maintenance of welding quality.

The specific function of welded pipe equipment welding seal box is to make the welding in a relatively sealed environment, through inert gas protection, reduce the probability of oxidation reaction in the welding process, so as to improve the welding effect. It should be noted that the space for welding the sealing box is limited, and the welding is continuous, so the welding temperature is generated for a long time in the narrow space, if this part of the temperature is cooled, it should be considered. In addition, the exhaust gas entangled during welding will be mixed with inert gas. How to exhaust or reduce the concentration of exhaust gas is also a factor to be considered. Finally, if the position of welded pipe die is controlled during welding, this also needs to be considered.

Small welded pipe equipment welding sealing box is not small, but also a lot of things to pay attention to, any mistake may cause the decline of welding effect, so we should pay more attention.

Key words: welded pipe equipment

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