Optimum Design Roll Passes Of Rolling No.20 Angle Iron Through Medium Section Mill

Rolling big angle iron through medium section mill may acquire finer economic benefit for satisfying needs of market. At the same time, there are some questions, loads of medium mill are higher than before. If design and adjustment is not the best, accidents are took place easily. Load of mill which is designed according to experienced method in higher, load of mill can't attain balance. Although designers do their best to distribute reduction by any possibility, load of mill every pass appears unbalanced. Rolling especially on the conditions of critical states appear accidents easily, so much as roller breaks off. It is import to provide a computer system about optimal design for balance the rolling load in medium section rolling.This paper did deformational resistance experiments with 16Mn, made the mathematical calculating model of deformational resistance of 16Mn in the conditions of deformation temperature t=950℃-1150℃,degree of reductionε=0.2~ 0.5 and deformation rateε=1~20s-1.This model was as follows:This paper made mathematical calculating model of temperature variation in medium section rolling process. This model wasΔt =αΔtp ?k?Δt??βΔtd.This paper accorded pass specialty of rolling angle iron, contact area of butterfly style were computed by method of division for the first time, thereby, provided gist for computing the rolling force. The dynamic programming method is used in medium section mill rolling process for the first time in this paper and received size of pass of balance load. Adopting VB , established optimal design software, which was"Optimum Design Roll Passes of Rolling No20 Angle Iron Through Medium Section Mill",aimed at balanced the rolling load in medium section mill rolling process, replacing the experimental design, this not only can save time and manpower, increase data precision and less error, but also has commonality and wide scope of application, which provides a computer system for medium section mill rolling. The perfect combination between VB and AutoCAD enhanced the drawing function of this software, so that you get a optimal roll-pass drawing agree with engineering drawing request.