论文部分内容阅读
在冷轧奥氏体钢管材时,由于金属塑性不足,热轧管坯机械性能波动大,加上压下量和孔型轧槽的椭园度过大,因此出现斜裂口废品。取φ89×7mm、Cr18Ni10Ti钢热轧管捆的一半退火后,在—55轧机上,以椭园度由压下段开始的1.14减到终了的1.06的孔型轧成φ45×3.5mm的管子,另一半在轧制时则不进行退火。再取一捆中1/4的偶数钢管在形成工作锥之前进行预
In the cold-rolled austenitic steel pipe, due to lack of metal ductility, hot-rolled tube billet mechanical properties fluctuations, coupled with the reduction of the amount of groove-shaped groove and the oval degree is too large, so the emergence of oblique crack waste. Take φ89 × 7mm, Cr18Ni10Ti steel hot-rolled tube bundle after annealing half, in the -55 mill, the degree of ellipticity from the beginning of the depressing section 1.14 reduced to the end of the 1.06 hole rolling into φ45 × 3.5mm tube, and the other Half are not annealed during rolling. Then take a bundle of 1/4 even number of steel pipe in the formation of working cone before the pre-