The Advantages of Produce Stainless Steel Pipe by the Spinning Method

Spinning stainless steel production is a high-quality, precise, economical and flexible forming method. It uses stainless steel plates or stainless steel pipes as blanks, fixes the blanks on the mandrel, makes it rotate with the mandrel, and the spinning roller rolls along the mandrel to roll the blank into a shell with the same shape as the mandrel. This feature has aroused the strong interest and attention of the pressure processing personnel and made the spinning method get continuous development. The spin forming method has the following advantages:

1) The products produced by the spinning method have a smooth surface and high precision. For example, the shell with a diameter of 150mm can have an accuracy of +-0.005mm; the tolerance of the spacecraft shell is +-0.4mm, and it is easy to meet the requirements by the spin forming method.

 2) After spinning the metal material, the grains are redistributed in the metal flow direction, which greatly improves the fatigue strength of the material; and its yield point, strength and hardness have also been improved, but the plastic index has decreased.

3) The spin forming method can produce products of various metals and their alloys such as lead, copper, magnesium, titanium, zirconium, tungsten, molybdenum, etc., as well as products of stainless steel, alloy steel and various low plastic materials.

4) The spin forming method can be used to produce a variety of complex and wide-ranging thin-walled products, which can be used to manufacture structural or mechanical parts.

5) The tool consumption of spin forming is low. Compared with the deep drawing method, the tool consumption is only one tenth of that of deep drawing.

6) Low metal consumption, a chipless processing, a product spinned by Angang Seamless Factory, which can increase the material utilization rate of the original chip processing from 3.6% to 54.2%, if it is produced on a powerful spinning machine Increased to! 81.2%. Short processing cycle and low production cost.

7) It is easy to realize automatic operation. Because the relative motion of tools and machined parts is similar to ordinary machine tools, various program control, numerical control and automation technologies achieved in machine tool production can be transplanted into spinning production.

8) The production process of the spinning method is flexible, which is convenient for the production of small batches and multiple varieties.

The disadvantage of the spin forming method is that it can only produce rotary, symmetrical shell-shaped products, and the plasticity of the product is reduced, and the internal stress is large. Especially should pay attention when welding the spinned products into an assembly.

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