Stainless steel pipe is constantly promoted to take a new way

Stainless steel pipe to be very good control in the process of production and processing precision of products, is a very complicated things, along with the development of technology can't broken, the new stainless steel production precision had the very big promotion, stainless steel pipe production technology in China, due to the development of late, especially on the high-end stainless steel production industry and international in a certain gap, in stainless steel pipe, The production method of stainless steel tube forming has the advantages of saving materials, saving energy and improving the quality of products, but the deformation behavior of tube billet metal in the forming process is very complicated and it is difficult to analyze theoretically. At present, the analysis method of stainless steel tube forming process is mainly divided into the following three kinds:

First, by combining theoretical analysis with experimental research, the velocity field of the forming parameterization of stainless steel tubes is summed up through a large number of experimental studies, and then the energy method and principal stress are used to solve the problem. The former Soviet Union scholars adopted this method. With the continuous innovation of technology and continuous improvement of production equipment, the new theory in practice continues to break the original technology has been very good development!

Second, the approximate theoretical analysis method is adopted, which mainly assumes that the deformation is axisymmetric or plane state, and the principal stress or upper bound method is used to solve the solution, and then the analytical solution is corrected by multiplying the coefficient. In essence, this method can only approximate the deformation of the main pipe, branch pipe and the metal on the symmetry plane far away from the transition region, which is often used by Japanese and Chinese scholars.

The third is the numerical simulation calculation, mainly using the finite element method, the United States and South Korea scholars often adopt this method.

Each of these three methods has its advantages and disadvantages and is suitable for different situations.

Generally speaking, the first two methods are used in the process design, qualitative discussion of forming law and calculation of forming force. However, it is necessary to carry out finite element simulation when the forming law is studied quantitatively, the distribution of stress and strain is revealed and the process and die structure is optimized. Finite element method is one of the most widely used and vital methods in numerical analysis.

Stainless steel pipe production technology in the practice of continuous improvement and promotion, technology will be more and more mature, to meet the latest market development and demand. Walk out a new brilliant road!