Carbon steel seamless pipe manufacturer today share the maintenance and maintenance of seamless steel pipes, let's take a look.

The knowledge of seamless steel tubes is known by many people, but many people only know the production, sales, use and other knowledge of seamless steel tubes, but there is still a part that is very important, that is, maintenance and maintenance!

When manufacturing seamless steel pipes, the pickling process of steel pipes is involved. For the staff, what issues should be paid attention to when picking up seamless steel tubes? First, labor protection products must be worn before pickling. For the working environment on site, detailed inspection is also carried out, mainly to check whether the sling of the steel pipe is in good condition, and the work can be carried out after the confirmation is completed.

Second, in pickling, pickling is mainly carried out by hydrochloric acid pickling, and the content of hydrochloric acid is generally 18% to 20%. The third staff member needs to know the concentration and temperature of the acid and the tonnage of the acid pickling pipe in the tank before the operation. These can be detected by using professional measuring equipment. Fourth, it is best to control the weight of the pickled steel pipe between 2 and 5 tons each time, and the time is 5 to 15 minutes. Time needs to be adjusted according to the weight. Steel pipes need to be vibrated frequently during the pickling process. When the pipe is placed under the acid tank, the steel pipe should be tilted to prevent accidental injury to hydrochloric acid. Seamless steel pipe is made of high-quality carbon steel such as 10#, 20#, 30#, 35#, 45# or low-alloy structural steel such as 16Mn and 5MnV or hot-rolled or cold-rolled alloy structural steel such as 40Cr, 30CrMnSi, 45Mn2 and 40MnB. Made of. Seamless pipes made of low carbon steel such as 10# and 20# are mainly used for fluid conveying pipes. Seamless tubes made of medium carbon steel such as 45# and 40Cr are usually used to make mechanical parts, such as parts for automobiles and tractors. Generally, seamless steel pipes are required to ensure strength and carry out flattening tests. The hot rolled steel pipe is delivered in a hot rolled state or a heat treated state; the cold rolling is delivered in a heat treated state.

Hot rolling, as the name suggests, has a high temperature of the rolled piece, so the deformation resistance is small and a large amount of deformation can be achieved. Taking the rolling of the steel sheet as an example, the thickness of the continuous casting blank is about 230 mm, and after rough rolling and finish rolling, the final thickness is 1 to 20 mm. At the same time, due to the small width-to-thickness ratio of the steel plate, the dimensional accuracy requirement is relatively low, and the shape problem is not easy to occur, and the convexity is mainly controlled. For the requirements of the organization, it is generally achieved by controlled rolling and controlled cooling, that is, controlling the rolling temperature, finish rolling temperature and crimping temperature of the finishing rolling to control the microstructure and mechanical properties of the strip.

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10 inch seamless steel pipe