STUDY FOR SURFACE STRENGTHENING OF WITHDRAWAL ROLL AND WRAPPER ROLLS ON HOT ROLLING LINE
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摘要: 针对夹送辊和助卷辊的使用寿命低的现状,选择PYY 125管状焊丝+SSD焊剂作为堆焊材料,采用合适的堆焊工艺对夹送辊和助卷辊进行堆焊,经现场使用,其过钢量分别达到26.5万t和35.4万t以上,大幅度提高了夹送辊和助卷辊的使用寿命,减少了粘钢现象。Abstract: Withdrawal roll and wrapper rolls were strengthened by build-up welding against their short-life,using PYY125 tube welding wire+SSD welding flux as build-up welding materials.Practice use indicated that steel production reached 2.65×10 5t and 3 54×10 5t respectively during the life of build-up welding rolls.The lives of rolls were increased significantly.The sticking of steels was reduced.
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Key words:
- build-up welding /
- withdrawal roll /
- wrapper rolls
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