What is the difference between the stainless steel tube and tube rolling
Stainless steel seamless pipe manufacturing process at home is divided into hot and cold drawing tube, two pieces of process what is the difference between the use of the same? Let's make a brief introduction.
Stainless steel stands for material. According to the production process, steel pipe, sub welded pipe, hot rolled pipe, cold rolled pipe and cold drawn pipe. What you say should refers to the cold drawn pipe drawing. Pipe called cold drawn, round steel called cold drawn. Compared with these processes, cold drawing and cold rolling are close to each other. The accuracy is higher, because of the plastic deformation, the mechanical properties are better. The specific difference is that the cold rolling is less than the cold drawn processing track, the accuracy and surface roughness are higher, and the processing cost is high. Cold drawing hardness is high, processing cost is low, processing will be wasted.
We usually say the hot-rolled seamless slide into thermal expansion, is to use tools of the pipe up, supporting circle. Cold is the opposite, a fixed mould outside the inner hole of the fixed mandrel, from the outside to make him thinner. Annealing is required before hot rolling, without cold rolling. In hot rolling billet after annealing, stainless steel seamless pipe, wall production minus a broaching machine after reaming compression capability, good flexibility, technological properties were superior to those of ordinary tube ligation.Now the Zhejiang area in the production of stainless steel seamless pipe is widely used cold production technology, but higher production efficiency of 2 roller cold rolling mill, a lot of strength of the manufacturers are equipped with, because the price of the purchase quantity not more general factory. It is commonly used in conjunction with cold drawn units to increase efficiency and reduce production costs.It is precisely because of their differences in production and processing technology, but also makes the hot-rolled stainless steel and cold-rolled pipe has the following differences:A: seamless pipe and tube rolling produced products, though they are working with the tube, but the application is different, generally used for mechanical drawing, heat exchanger pipe, pipe and tube rolling engineering, generally used for fluid transport in pipeline construction;Two: seamless pipe and tube rolling process and product quality; slide processing, low defect, high precision, uniform grain size;Three: two different prices, the price to slide rolling ratio is more expensive;Four: the stainless steel tube ligation can only in diameter 38-159 pipe, or other drawing process. Because of the production process, the tube size is relatively accurate. In the purchase of steel tubes, or tube rolling is drawing, but also the actual situation needs to choose.
