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What are the production characteristics of stainless steel seamless steel pipes

There are four kinds of stainless steel seamless steel pipe production methods: hot rolling, hot extrusion, cold rolling and cold drawing. Their production characteristics from plastic deformation resistance, and spread, several aspects of this application and the sensitive degree of thermal conductivity and oxidation resistance of observation. The following are described in detail.Because ferritic stainless steel is a single phase structure and no phase transformation occurs. Therefore, the grain growth is serious when the heating time is long and the temperature is high, which will significantly weaken the plasticity of stainless steel. The maximum heating temperature of the stainless steel pipe billet is 1000-1060. In this range of temperature, stainless steel will have excellent plasticity. The heating temperature before the cold - drawn hammer is 700-850 degrees C, and the carburization should be avoided and the water quenched after the hammer. Because ferrite chrome stainless steel will have room temperature brittleness, cold processing performance is relatively weak, cold drawing is easy to crack and pull off, so it is best to draw at a certain temperature, and the speed of pulling and pulling is not too large. When the cold rolled ferritic stainless steel pipe is rolled, the deformation degree of the stainless steel pipe is not higher than 40%-48%. According to the grain refinement degree, the degree of deformation can be raised to 55%-65% in the following channel. In order to prevent cracks in the stainless steel pipe when rolling, the temperature rise of the stainless steel pipe is favorable when rolling, so in most cases, when the stainless steel pipe is rolled, there is no need to use the emulsion cooling tool and metal.Source: China Stainless Steel Pipes Manufacturer - Yaang Pipe Industry Co., Limited (www.yaang.com)

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