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分析了小型轧管机组生产热轧厚壁无缝钢管存在的问题,介绍了在φ108mm 三辊轧管机上采用斜轧空心减径生产小口径厚壁无缝钢管的工艺。该工艺可避免厚壁管出现内方并减少切头和降低金属损耗,适用于毛管或荒管的空心减径和定径。
The problems existing in the production of hot rolled thick-walled seamless steel pipes by small-sized pipe mill units are analyzed. The production process of small-caliber thick-wall seamless steel pipes by the hollow-cut hollow reduction of φ108 mm three-roller pipe mill is introduced. The process can prevent the emergence of thick-walled tube inside and reduce the incision and reduce metal loss, suitable for hollow capillary tube or waste reduction and sizing.