Analysis Of Rolling Process And Parameter Optimization For Titanium Bar And Wire

Titanium alloy is a newly developing metal structure material, it has the advantages of low density, high specific strength, good toughness and good performance in high or low temperature. Titanium and titanium alloy have important applications in chemical, aerospace, defense industry, medical equipment and daily life in various fields.But the poor plasticity, thermal conductivity, high deformation resistance and friction coefficient put forward higher requirements of production conditions.Three-roll Y-type rolling mill is a new type of rolling mill, its productions are much better than the traditional two-roll mill, but the bad rolling stability make the requirements of guide arrangements are higher, due to the less experience, "reversing steel" and "roll-seizing" always happen in the production. Make more research of regularity and optimize the parameter of the production of three-roll Y-type rolling mill can solve those problems better.To solve the problems in the production, this paper put forward a new pass design and calculation method to three-roll Y-type rolling mill, based on the finite element method, the product of three-roll Y-type rolling mill were detailed analysed and researched, through the above studies to optimize the parameters of titanium bar rolling, and solve some problems in the rolling process. Aiming at the instability of titanium alloy rolling in three roll mill, put forward a new type of pass(three-roll hexagon pass).The main research methods are as follows:(1) In view of the defects of the calculation of titanium alloy rolling pass of three roll mill,a new pass calculation method was proposed.Mathematical calculation model was established by the mathematical analysis method;(2) According to the calculated pass parameters, three-dimensional models were build by solidworks;(3) Establish an appropriate rolling system, the finite element numerical simulation of the new pass calculation method was made to get Titanium alloy rolling data;(4) Aiming at the instability of titanium alloy rolling in three roll mill, put forward a new type of pass(three-roll hexagon pass). Through the finite element simulation prove that the new type of pass could be used to improve the tability of titanium alloy bar rolling.