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常熟市无缝钢管厂原有的两台φ50mm二辊斜轧穿孔机由于使用时间已久,部件严重锈蚀磨损,强度大大降低及结构不合理等使设备故障频繁,调整和维修困难,已不能适应生产的要求。该厂根据生产冷轧(拔)精密、薄壁无缝管为主的特点,为减少冷轧(拔)道次,提高产品成材率,降低生产成本,新设计了能穿轧小直径薄壁(Smin2.8～3mm),毛管不产生尾三角的50mm二辊斜轧穿孔机。该穿孔机定心辊装置改为双行程汽缸带动弧形板转动的倒三角布置结构,使定心辊开口度更易于控制,毛管能迅速自动滚出,提高了生产效率。顶杆小车的
Changshu Seamless Steel Tube Plant, the original two φ50mm two-roll cross-piercing mill due to the use of a long time, serious corrosion and wear parts, and greatly reduce the intensity and structure of the unreasonable equipment failure so frequent, adjustment and maintenance difficulties, can not adapt Production requirements. According to the production of cold-rolled (pull) precision, thin-walled seamless pipe-based features to reduce cold rolling (pull) pass, improve product yield and reduce production costs, the new design can wear rolling small diameter thin wall (Smin2.8 ~ 3mm), the capillary does not produce the tail triangle 50mm two-roll inclined piercing machine. The punching machine centering roller device into a double-stroke cylinder driven curved plate inverted inverted triangular arrangement so that the centering roller opening degree easier to control, the capillary can automatically roll out to improve production efficiency. Top trolley