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我厂生产小型无缝钢管的76毫米轧管机组,原有斜辊穿孔机一台和自动轧管机一台,管坯经穿孔和轧制2～3道后,就作为冷拔用的毛管送往冷拔工段拔制。这种毛管的缺点是:壁厚不均、内划道、椭圆和耳子,直接影响冷拔钢管的质量。我厂于1963年2月增设了一台均整机,在热轧作业线上,经轧管机轧制后的毛管即送均整机均整,之后再转移到冷拔工段。经过生产实践和不断改进,钢管的质量获得提高,设备使用情况良好。 (一)设备情况: 这台均整机是利用一台闲置的穿孔机来改造的,它也是76轧管机组的定型设备。所作的改造是,万向接轴由原长1.364米改为4.444米,以及与此相应的进料槽、出料
I plant a small seamless steel pipe production line of 76 millimeters, the original inclined-roll perforation machine and a automatic pipe rolling machine, the tube after piercing and rolling 2 to 3, as the cold drawn with the capillary Sent to the cold drawn section of the system. The disadvantage of this capillary is: uneven wall thickness, the inner lane, oval and ears, a direct impact on the quality of cold drawn steel. I plant in February 1963 to add a machine are all machines, in the hot rolling line, the tube rolling mill after the hair that is sent to the whole machine are uniform, and then transferred to the cold drawing section. After the production practice and continuous improvement, the quality of the steel pipe is improved and the equipment is in good condition. (A) equipment conditions: This machine are using a machine to use an idle piercing machine to transform, it is also a 76 rolling unit stereotypes equipment. The transformation is made, the universal joint shaft from the original 1.364 meters to 4.444 meters, and the corresponding feed trough, the material