How does the crack on the surface of DIN17175 15Mo3 seamless steel pipe cause

The tidy and clean surface is a requirement for the selection of DIN17175 15Mo3 seamless steel pipe. In recent years, many companies have paid attention to it. Meanwhile, the cracks on the surface of 15Mo3 seamless steel pipe is a common phenomenon, but also a direct cause of reduced sales rate, so what is the cause of the crack?

First, the poor quality of raw materials will lead to inside and outside crust, scarring, cracks and so on problems of DIN17175 15Mo3 seamless steel pipes.

Second, temperature factor. The first important process for production of DIN17175 15Mo3 seamless steel pipe is heating. Bad heating (uneven, temperature is not enough, etc.) will cause internal skin and so on problems.

Third, equipment factor. Each equipment part will affect the final quality of DIN17175 15Mo3 seamless steel pipe. For example, the scraping of the equipment parts will cause the outer warping skin and the pits; the entrance to the piercer is not smooth, will cause the head of the 15Mo3 pipe to be drenched by water and bite into the head.

Fourth, process problems. There are problems of adjustment, equipment failure, and the quality problems of pipe material produced by the wear of process parts (head, guide plate, roll etc.).

Therefore, there are dozens of situations and possible reasons for the emergence of a defect. If it is not seen or not at the production site, it is often more difficult to explain the specific reasons for the crack on the surface of DIN17175 15Mo3 seamless steel pipe.