摘要
我国自行开发的精密管材矫直机适用管材规格范围不断扩大(Φ3～Φ220 mm),但被矫管材的屈服强度均小于650 MPa,难以适应新近市场急需的高钢级精密管材高效矫直的要求。针对这一问题,开发了Φ280 mm十一辊高钢级精密钢管矫直机。该矫直机组为离线设备,用于退火之后或者不经退火的冷轧、冷拔钢管的矫直,被矫管材屈服强度达到850 MPa,矫后管材直线度小于0.25 mm/m,矫直盲区控制在400 mm以内。近两年生产实践表明,针对高钢级、大直径精密矫直工艺中的敏感因素,采用辊式多环节矫直的设备方案是可行的。同时对机组传动系统、前台C形套内衬材料、换辊机构及矫直辊喷淋系统存在的问题提出了改进方向。
The applicable specifications scope of precision steel tube straightening machine continuously extends （from Φ5 3 mm to Φ5 220 ram）, but the yield strength of straightened tube is less than 650 MPa, so the straightening machine is difficult to adapt to the requirements of currently good market needs in the high grade precision steel tube. Based on this reason, the 6 280 mm eleven-roller high grade precision steel tube straightening machine was developed. The straightening machine is offline facility, which is used ibr annealing or cold rolling without annealing, and cold drawn steel tube straightening, the yield strength of straightened tube reaches 850 MPa, the straightness is less than 0.25 mm/m after straightening, and straightening blind area is controlled within 400 mm. The recent two years production practice proved that aiming at the sensitivity factors of high grade large diameter precision straightening process, adopting the roll mode and many links straightening proposal is feasible. Simultaneously, it put forward improvement direction for the existed problems, such as the drive system, the lining materials for the front desk C shape set, roll changing mechanism, and the straightening roller spray system.
出处
《焊管》
2013年第8期36-40,45,共6页
Welded Pipe and Tube
关键词
钢管
矫直机
斜辊
steel pipe
straightening machine
oblique roller
