增加152mm中間孔型系列提高芯棒利用率

Enhancement of Mandrel Utilization via Addition of 152 mm Intermediate Pass Series

摘要: 分析了某公司Ф159 mm MPM連軋管機組的變形工藝，針對Ф172 mm系列芯棒失效后，只能改車削一次Φ112 mm系列芯棒，存在芯棒車削量大、芯棒利用率低等問題，提出增加152 mm中間孔型系列。增加152 mm中間孔型系列后，擴大了產品規(guī)格；減少了定徑機架占用量，改善了鋼管壁厚精度；實現芯棒梯度車削，提高了芯棒的利用率，降低了生產成本。

Abstract: The deformation process of the Ф159 mm MPM plant as located at a certain domestic company is analyzed. After it failed to be continuously used，the Ф172 mm series mandrel can just once re-turned to be the Ф112 mm series mandrel，which brings about disadvantages like large turning quantity and low utilization of the mandrel.Addressing this problem，the 152 mm intermediate pass series is proposed to be added. As a result，the product size range is expanded，and the occupation rate of the sizing mill stands is reduced，and the wall thickness accuracy improved. Meanwhile，gradient turning of the mandrel is realized，resulting in higher mandrel utilization and lower operation cost of the plant.