It is processed on ordinary drilling machines, lathes, boring and milling machines, and large holes are first drilled and then bored using a lathe or boring machine. Generally speaking, deep holes generally refer to holes with a length-to-diameter ratio greater than 10. For deep holes with a length-

1. Surfacing technologySurfacing technology is a welding method in which molten metal is piled up on tools or machine parts by electric welding or gas welding. As a traditional repair process, surfacing technology has been used in the repair of rolls and large castings and forgings. It is the most c

Rolls are important consumables in the steel rolling process of iron and steel enterprises, as well as one of the main products of large casting and forging manufacturers. The recycling of rolls is undoubtedly changing the rolls from consumables to durable goods that can be recycled, and only the wo

Transverse grain defects are an important indicator that affects the surface quality of forged steel cold-rolled products. In many domestic cold forging steel mills, especially the galvanizing line and the continuous rolling line, it is very difficult to solve the transverse grain defect. The causes