Preparation for welding stainless steel pipe
No matter what product must have certain preparation and inspection, so before welding stainless steel pipe. Targeted preparations should be made. This preparation is an important part to ensure the welding quality. Its contents are mainly considered from the following three aspects:
Qualification of welding operator's skill for stainless steel welded pipe it is necessary for the welder engaged in welding operation to work with certificate and strictly follow the allowable welding items indicated on the operation certificate. The welder shall have more than two years' welding experience of stainless steel or chromiummolybdenum steel. Before using welding materials, the welding rod shall be baked according to the operation instructions (if there are no rules, it is generally required to The drying temperature was 150-200 ℃,and the drying time was 1 h. It is necessary to use a special oven with controllable temperature for baking. The dried welding rod should be put in the heat preservation cylinder for use. The exposed electrode should be baked from the beginning for more than 2 hours, and should not be repeated more than 3 times.
The groove of stainless steel welded pipe can be machined or plasma cut. Before welding, the oxide layer and burr at the groove should be removed first. In order to eliminate the spatter after welding, the chalk slurry can be applied within the range of 50 mm on both sides of the weld, and then it can be eradicated after welding. As the stainlesssteel and carbon steel touch will produce "carburization" appearance, it is necessary to transport the welding bead and spatter finishing Use special grinding wheel and stainless steel brush.
Welding is a technical work, so we can't do anything without preparation. Must go through the preparation, to ensure all safety and normal operation of the premise, can start to prepare a series of welding operations.
This article comes from the manual welding equipment of water tankhttp://www.mountainprovince.net
-
12-20
Methods to reduce welding deformation and control
I. causes and types of welding deformation causes of welding deformation: welding deformation refers to the deformation of weldments during and after welding. During welding, the molten metal and the base metal near the seam expand and produce plastic deformation. During solidification, the weld and the metal near the seam contract. This is the longitudinal stress and the transverse stress. Make the weld longitudinal and transverse shrinkage, so that the weldment deformation. Because the heat e
-
12-20
Specific differences between grinding machine and polishing machine
Difference: the workpiece processed by grinding machine is rough, and the surface finish of workpiece processed by polishing machine is better, but high finish can be achieved by installing precise grinding wheel on grinding machine. Grinding machine: electric grinder reciprocating electric polishing grinder (also known as file mill). It is widely used in the fine machining and surface polishing of the mold profession. It is a substitute for similar pneumatic products. The main outstanding featu
-
12-20
How to improve the efficiency of straight seam welding machine?
The straight seam welding machine is widely used in ordinary times, and our appeal to the seam welding machine is constantly strengthened. We should know about the operation of the seam welding machine. The straight seam welding machine is not only excellent in spot welding machine, but also excellent in seam welding machine. A good machine must be equipped with a good operator. It is not simple to be a good operator. In addition to the accumulation of time experience, it also needs many tips, s
-
12-20
How to deal with the failure of welding robot?
General welding robot factory has the following shortcomings: a) human shortcomings caused by improper operation, mainly including welding gun damage in welding robot factory, improper loading and unloading of workpieces, and no deformation of positioner follow-up. B) the disadvantages of poor design and manufacture of peripheral equipment mainly include: problems of lifting way switch and cable, quality problems of some components flashed by teaching device. C) improper environmental protection