Reduce the use of stainless steel plate in the process of reducing the production of defects, The following measures should be taken:
1. Check the crystallizer regularly, especially the water sample, to see if there are small impurities mixed in, causing water quality changes.
2. Strictly control the over-age service of the equipment, ensure the timely maintenance of the sector, and avoid the deep scratch of the casting slab due to the non-rotation of local rollers in the sector.
3. Implement water distribution zone control in bending section to dynamically control corner temperature of billets with different width end faces to avoid corner temperature entering brittle zone in bending process.
4, as far as possible with wide end casting billet production of large width stainless steel plate, reduce the width of stainless steel plate rolling, so as to reduce the uneven deformation of the edge of wide stainless steel plate rolling, weaken the width of stainless steel plate edge crack.
5. Improve the uniformity of the temperature of the casting billet in the heating furnace, optimize the slab heating process, reduce the temperature difference between the upper and the lower parts of the casting billet, reduce the difference of deformation resistance between the upper and the lower parts of the rolled parts, so as to reduce the uneven deformation of the rolled parts.
6. Improve the finishing ability of the casting blank, avoid the occurrence of secondary defects such as incomplete cleaning of the oxide slag after the finishing of the casting blank, and local deep burn marks.
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Post time: May-13-2022