機(jī)架鎖緊方式對三輥連軋管機(jī)軋制精度的影響分析

Analysis of Influence of Stand Locking Method on Rolling Accuracy of Three-roll Mandrel Pipe Mill

摘要: 介紹了側(cè)向換輥式三輥連軋管機(jī)中兩種常用的機(jī)架鎖緊方式（上下鎖緊和斜向鎖緊），分析了兩種鎖緊方式對軋輥定位精度的影響及對軋輥軸向力的承受能力等。分析認(rèn)為：上下鎖緊方式對于三輥連軋管機(jī)軋輥定位精度的提高具有積極效果；斜向鎖緊方式雖然降低了軋輥的定位精度，但是能承受更大的軋輥軸向力，軋制機(jī)架定位更加穩(wěn)定，是一種更為可靠的機(jī)架鎖緊方式。

Abstract: Studied are two commonly used stand locking methods for the lateral roll-changing 3-roll mandrel pipe mill, namely the vertical locking method and the oblique locking method.Analyzed are the influences of these two locking methods on the roll positioning accuracy and their capability of bearing the axial roll forces.Based on the analysis, it is concluded that the vertical locking method has positive influence on the roll positioning accuracy of the 3-roll mandrel pipe mill;and although the oblique locking method decreases the roll positioning accuracy, it can endure bigger axial roll forces and stabilize the positioning of rolling stand, which makes it a more reliable mechanism of stand locking.