Numerical Simulation And Experimental Study On Cold Continuous Rolling Process Of Stainless Steel Wire

The coal is produced and consumed on a large scale in our country, but the proportion for the coal washing is not high, which is adverse not only to take full advantage of resource, but also to protect the environment. With the improvement for economy development, adjustment for industrial structure and the serious haze caused by air pollution, the coal washing business is undoubtedly to have a bright prospect. As the necessity for coal washing business, trapezoidal stainless steel wire-wrapped screen is certainly to have a large demand in market. 202 stainless steel has many advantages such as favorable mechanical properties and welding performance, lower cost, which is perfectly used as the material for trapezoidal stainless steel wire-wrapped.At present, a steel wire with 5mm in diameter is separately rolled within three rolling passes by short-stress-path rolling mill in a company, which has a low productive efficiency and the quality of products are hard to control. So, in order to improve efficiency and precision of the products, a cold rolling mills in three passes are designed instead of the separate rolling. In this paper, with the finite analysis software DEFORM-3D, a numerical simulation for the cold rolling of trapezoidal stainless steel wire-wrapped screen is conducted. The influence on tension produced by speed adjustment is studied according to different rolling speed, which furthermore influences the mechanical parameters and structure property of rolling mill and allocates mechanical parameters.According to the simulation results, the maximum deformation and the rolling force needed in rolling should be in the second pass, which has a complex deformation and uneven force. The stress can be improved and the strain can be well-allocated in the second pass by changing rolling speed of the three passes.The flattening occurs in the first pass and in this paper, an experiment is conducted on a two-high mill with 100 in diameter, for the purpose of testing the accuracy of the numerical simulation. Compared the model width and broadsiding after rolling by the first pass, the results of numerical simulation arereliable. And the flattening and the uneven and generalized parameters, H*,for precise expression is researched because of its complex deformation. A solution formula for rolling force is obtained by changing Stone formula, which improves the computational accuracy of rolling force in the wire rod rolling flat.