Xiamen Sinuowei Automated Science and Technology Co.,Ltd

Xiamen Zhiyuanxin Automation Equipment Co.,Ltd
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How to eliminate common faults in time and ensure the quality of workpiece 2020-07-30
The welding robot should strictly control the preparation quality of parts and improve the assembly precision of welding parts.
The surface quality, groove size and assembly precision of the parts will affect the weld seam tracking effect.
The following aspects can be used to improve the preparation quality of parts and assembly precision of welding parts.

(1) Develop special welding technology for welding robot, and make strict technological regulations on parts size, weld groove and assembly size.
Generally, the dimension tolerance of parts and groove is controlled within ±0.8mm, and the dimension error of assembly is controlled within ±1.5mm. The probability of welding defects such as porosity and edge bite can be greatly reduced.

(2) Adopt assembly tools with high precision to improve the assembly precision of welding parts.

(3) The weld shall be cleaned, free of grease, rust, welding slag, cutting slag and other sundries, and solderable primer shall be allowed.
Otherwise, it will affect the success rate of arc initiation.
The positioning welding is changed from electrode welding to gas shielding welding, and the spot welding part is polished to avoid the residual slag shell or porosity due to positioning welding, so as to avoid the generation of arc instability or even spatter.

Xiamen Sinowei Automation Technology Co., Ltd. is a comprehensive service provider of automatic welding complete sets of equipment.

The robot welding adopts the argon-rich gas protection welding, and the welding defects in the welding process generally include welding deviation, edge bite and porosity, etc. The specific analysis is as follows:

(1) Welding deviation may be caused by the incorrect welding position or the problem of finding the welding torch.
At this point, consider TCP(welding torch center position) is accurate, and adjust.
If this happens frequently check the zero position of each axis of the robot and reset the zero to correct it.

(2) The occurrence of edge bite may be due to improper selection of welding parameters, welding gun Angle or welding gun position, the size of appropriate power can be adjusted to change the welding parameters, adjust the attitude of welding gun and the relative position of welding gun and workpiece.

(3) The porosity may be due to poor gas protection, too thick primer or insufficient dry protective gas, which can be treated by corresponding adjustment.

(4) Excessive spatter may be due to improper selection of welding parameters, gas components or overextension length of the welding wire, the size of appropriate power can be adjusted to change the welding parameters, adjust the gas proportioning instrument to adjust the proportion of mixed gas, adjust the relative position of the welding gun and the workpiece.

(5) An arc pit is formed at the end of the weld after cooling. During programming, the function of buried arc pit is added in the working step to fill it up.

The robot welding adopts the argon-rich gas protection welding, and the welding defects in the welding process generally include welding deviation, edge bite and porosity, etc. The specific analysis is as follows:

(1) Welding deviation may be caused by the incorrect welding position or the problem of finding the welding torch.
At this point, consider TCP(welding torch center position) is accurate, and adjust.
If this happens frequently check the zero position of each axis of the robot and reset the zero to correct it.

(2) The occurrence of edge bite may be due to improper selection of welding parameters, welding gun Angle or welding gun position, the size of appropriate power can be adjusted to change the welding parameters, adjust the attitude of welding gun and the relative position of welding gun and workpiece.

(3) The porosity may be due to poor gas protection, too thick primer or insufficient dry protective gas, which can be treated by corresponding adjustment.

(4) Excessive spatter may be due to improper selection of welding parameters, gas components or overextension length of the welding wire, the size of appropriate power can be adjusted to change the welding parameters, adjust the gas proportioning instrument to adjust the proportion of mixed gas, adjust the relative position of the welding gun and the workpiece.

(5) An arc pit is formed at the end of the weld after cooling. During programming, the function of buried arc pit is added in the working step to fill it up.
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