1270粗轧机滑块式万向接轴制造工艺

万向接轴是钢厂粗轧机重要零件,在传递动力和扭矩方面起到非常关键的作用,是轧钢过程的主要受力件.1270粗轧机滑块式万向接轴的结构特点是两端具有开式滑块式叉头.其制造难点为,尺寸较长、热处理容易变形,锻件内部质量要求高、超声波探伤严格,接轴尺寸公差和粗糙度要求都很高.主要采用电渣重熔冶炼,4000砘水压机锻造,在上下炉膛...

The manufacturing process of 1270 slipper-type universal roughing mill spindle

Universal spindle is one of the major components on rough mill, which plays a key role in force and torque transmission and is the major part that needs to bear strength during steel rolling. Universal spindle fbr 1270 slipper-type rough mill, features at an open slipper-type jaw joint each on both ends. The manufacturing difficulties are, the part is liable to deform seriously due to the big length. The forging inside quality is high that requires strict UT to verify it. And what＇s more the dimension tolerance and surface finish are high as well. The main manufacturing process is Electro slag remelting, forge by 4000ton hydraulic press, heat treatment in vertical pit furnace with a separate temperature control facility at the upper and lower furnace, final-machining on NC horizontal milling machine and NC boring-milling machine, grinding on roll grinder and finally drilling the oil hole on deep-hole drilling machine. Through strict process control the universal spindle passed through the final inspection and met the customer＇s demands