Preparation method and device for socket pipe combining laser cutting and laser hybrid welding

Abstract

The invention provides a preparation method of a laser cutting and laser hybrid welding combined socketed pipe. The preparation method comprises the steps of clamping a hollow copper pipe; inserting one end of a hollow copper core into the hollow copper pipe; arranging a high-frequency induction heating coil; connecting an electronic optical shutter splitter to the output end of a laser; outputting welding laser beams, and performing fixed spot welding; outputting cutting laser beams so as to cut off the hollow copper core; outputting the welding laser beams so as to obtain laser circumferential welding seams of the side end of the socketed pipe; electrifying and preheating the high-frequency induction heating coil; after the preheating temperature reaches a set value, performing solid-phase coupling of socketed weld metal through an extrusion wheel; horizontally turning over the hollow copper pipe for 180 degrees; and then welding the other end of the hollow copper pipe. According to the preparation method, two techniques of laser welding and high-frequency induction welding are combined, so that the problem of welding blocking formed in a way that local molten materials flow into the copper pipe by adopting traditional simple high-frequency induction welding is effectively solved; the invention further provides a preparation device of the socketed pipe.

Description

technical field [0001] The invention belongs to the field of industrial automation, and in particular relates to a preparation method and device for a socket pipe combined with laser cutting and laser hybrid welding. Background technique [0002] With the technical development of the air conditioning and refrigeration industry and the further strict control of environmental protection regulations, improving the heat transfer coefficient of the heat exchange unit itself is the key to improving the overall heat transfer performance of the heat exchanger and making up for the refrigeration performance caused by the replacement refrigerant itself. Necessary means of reducing. Based on the problem of cooling performance degradation of existing refrigerants and the lack of effective alternative working fluids, relevant companies and scientific research institutions have turned their research objects to the basic components of air conditioning and refrigeration—heat exchanger eleme...

AI Technical Summary

Problems solved by technology

However, for the lap welding of socket pipes, since the welding structure itself requires sufficient welding area to ensure the overall strength and mechanical properties of socket joints, single-pass laser welding cannot meet the requirements, and multiple passes of surfacing welding are required, which makes the process cumbersome , cost increases, limiting the application of laser welding in this field

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