The computer program of the pass schedule setting up is worked out in the paper. The program simulates the whole process of rolling metals in cold rolling condition. It includes the mathematical models of specific deformation energy, tension, coefficients of roll flattening, and of speed effect, deformation efficiency, etc.
According to the uneven deformation in different areas,a theory of expanding the main deformation area to improve the deformation efficiency and quality is provided.
type profile compressor chambers are too complex, the deformation and dynamics characteristics for Ⅱ? type profile compressor chambers are more steady, the deformation efficiency for Ⅰ? type profile compressor chambers is high and it is easy to machining.
This kind of rolling mode has many advantages, for example, high distortion efficiency, continuous production, high rate of finished product and good general performance.
So the author gives out the reform plan to reduce material consumption, enlarge production scope, improve dimensional precision and increase the forming efficiency , also several home made new type rolling machine are proposed for selection.
Processing map showing the variation of the deformation efficiency expressed by [2m/(m + 1)], where m is the strain rate sensitivity, with temperature and strain rate has been described for the composite.
In this paper the effects of rolling speed, angle of roll seat and elongation rate on force and power parameters of the planetary cross-rolling mill are analysed according to the results of experiments. It is pointed out that the elongation rate and angle of roll seat should be reasonably selected in order to get optimum efficiency of rolling deformation and quality products.
The computer program of the pass schedule setting up is worked out in the paper. The program simulates the whole process of rolling metals in cold rolling condition. It includes the mathematical models of specific deformation energy, tension, coefficients of roll flattening, and of speed effect, deformation efficiency, etc.. On the basis of the limited conditions, entry thickness, exit thickness, rolling speed, tension, rolling force and rolling torque,etc. are calculated.
This article analysis all kinds of sizes and equipment of seamless pipe mills in China, parts of the pipe mill process and equipment get behind, and can not produce high quality pipes of high strength and special properties . So the author gives out the reform plan to reduce material consumption, enlarge production scope, improve dimensional precision and increase the forming efficiency , also several home made new type rolling machine are proposed for selection.