Today I would like to explain to you the two welding methods of single hydraulic prop cylinder diameter friction welding and manual welding, what are the differences between the two welding process, the following two welding process to explain the characteristics.
Friction welding characteristics of single hydraulic prop:
Friction welding head is of good quality and stable. The welding process of automatic control by machine, not melting, welding process is a solid phase bonding, joint for forging organization, so the weld will not appear porosity, segregation and inclusions, the crystallization of casting organization defects such as cracks, welded joint strength is greater than the strength of the fusion welding, brazing, even more than the strength of the parent metal; In order to ensure the welding equipment has enough rigidity, accurate assembly location of welding parts and strict control of welding parameters, the welding part size accuracy is higher.
Features of manual welding of single hydraulic prop:
Common manual welding (carbon dioxide gas shielded welding) because of the use of groove welding, groove processing is not appropriate, easy to cause the phenomenon of weld penetration; In addition, the welding process is manually controlled by the operator, and the welding parameters are not set in a standard way, resulting in poor weld strength, porosity, slag inclusion and other welding defects. Moreover, due to the water content of carbon dioxide shielding gas and nitrogen and other impurities, often cause larger dust and splash, so that the appearance of the weld is not smooth enough.
To sum up, the single hydraulic prop cylinder diameter friction welding welding technology is more advanced, shandong coal group's single hydraulic prop is to take this kind of welding technology, to ensure the high quality and high stability of the welding joint!!
