Robot automatic welding system for PTA process and using method thereof

Abstract

The invention discloses a robot automatic welding system for a PTA process. The system comprises a control system, a welding system and a travelling system; the control system involves a cabinet and a control box; the welding system involves a gas bottle, a plasma generator, an alternating-current and direct-current TIG welding machine, a refrigerating water tank, a welding gun, a powder feeding device, a powder feeding device frame and a transferring box; the travelling system involves a robot control cabinet, a demonstrator, a robot, an external shaft and a tool clamping disc. The invention further discloses a using method of the welding system. According to the system and the method, the dependence of welding on people can be effectively reduced, the operation difficulty is reduced, the use is convenient, the welding efficiency is high, and the welding quality is good.

Description

technical field [0001] The invention relates to the field of welding, in particular to a robot automatic welding system for PTA process and its application method. Background technique [0002] At present, mining drill bits in petroleum drilling, mining machinery, coal mining and other industries need to have a hard wear-resistant layer, and the hardness needs to reach HRC50-60. Due to the high hardness, the material of the wear-resistant layer is difficult to pull into a welding wire. Mainly powder. At present, flame spray welding is the main transition process for this kind of high-hardness and impact-resistant material on the market, and it is all manual operation, which may easily lead to the following problems during the construction process: [0003] 1. The welding efficiency is low. Due to the operation of personnel during flame spray welding, the entire workpiece turns red during spray welding. After spray welding a position, it is necessary to wait for the interlay...

AI Technical Summary

Problems solved by technology

[0003] 1. The welding efficiency is low. Due to the operation of personnel during flame spray welding, the entire workpiece is red during spray welding. After spray welding a position, it is necessary to wait for the interlayer temperature to prevent flow.

[0004] 2. The welding quality is not stable. There are many influencing factors due to the operation of personnel during spray welding. According to incomplete statistics, the pass rate of artificial flame spray welding oil drilling and production drill bits is only about 75%, and the rework rate is relatively large. Most of them are caused by delamination. mainly

[0005] 3. The operating environment is harsh, and the flames of oxyacetylene are used during spray welding. The ambient temperature of personnel is above 40 degrees when operating in summer, and occupational health cannot be guaranteed.

[0006] 4. The safety factor is low, and the flame spray welding flame is oxyacetylene flame, which is easy to produce tempering

[0007] 5. The process operation is difficult, and the pure manual operation is highly dependent on the operator. Due to the relationship between the heat and the temperature, rich operating experience is required

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