Wuxi Duorunde Steel Tube Co., Ltd (My Answer); Seamless Steel Tube Manufacturer 16Mn, Precision Tubes, High Precision Precision Steel Tubes, Precision Alloy Tubes, Precision Alloy Tubes, Precision Rolled Alloy Tubes and High Precision Precision Steel Tubes The manufacturing process mainly consists of the following steps:
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1. smelting: 16Mn steel or precision alloys and other raw materials into the smelting furnace, high-temperature melting, remove impurities, to achieve a certain chemical composition and alloy content.
2. Continuous casting: the molten steel is poured into the continuous casting machine, cooled and solidified to form billets of a certain shape and size.
3. rolling: the billet is rolled through a number of rolling processes, so that its shape and size gradually close to the desired seamless steel pipe.
4. Perforation: The billet is perforated by a perforating machine after rolling to form a cylindrical seamless steel pipe.
5. Straightening: Straighten the seamless steel pipe after piercing to remove bending and deformation.
6. Cutting: The seamless steel pipe is cut into lengths according to the required length.
7. Polishing: The internal and external surfaces of the seamless steel pipe are polished to achieve a high degree of finish.
8. Cold Drawing or Cold Rolling: For high-precision precision steel tubes and high-strength precision steel tubes, it is necessary to carry out cold-drawing or cold-rolling treatment to further refine the processing and improve the dimensional accuracy and surface quality.
9. Heat treatment: heat treatment of seamless steel pipe to improve its mechanical properties and corrosion resistance.
10. Inspection: quality inspection of finished steel pipe, including dimensional accuracy, surface quality, chemical composition and other inspection items.? Among them, the manufacturing process of high-precision precision steel tubes also includes more high-precision machining processes, such as precision straightening, high-precision cutting, ultra-precision grinding, etc., to ensure its high dimensional accuracy and surface quality. The manufacturing process of precision alloy tubes and fine-rolled alloy tubes includes more alloy element additions and processing procedures to meet their special performance requirements. In general, the manufacturing process of all kinds of seamless steel tubes includes steps such as smelting, continuous casting, rolling, piercing, straightening, cutting, polishing, cold drawing or cold rolling, heat treatment and inspection. For different types and specifications of seamless steel pipe, the specific processes and parameters in the manufacturing process may vary.