Certificates

WKZ035-2006          1E0650

1. To ensure that plate type and avoid scratches, not allowed to use width times' rolling.

2. Casting billet should careful cleaning, does not allow for this kind with defects.

3. Rolling millsshould arrange production reasonable when pack furnace, ensure change new roller after rolling, before change new roller. ,benxi steel stay in the soaking zone in the continuous furnace

4. Billet heating according to the provisions of the Ⅱsteel group .Ensure billet temperature uniformity, through burning, banned the slab in furnace head long-term heating, so as to facilitate the iron cleanse.

5. Strengthen high pressure water descaling, rough rolling Ⅱstage before and open a few word times before rolling multi-purpose four roll high pressure water descaling, before finishing must play high pressure water, ensure all iron sheets.

6. The Ⅱtype controlled rolling, open rolling temperature of 1050 ~ 1150 ℃, air steel thickness quartile 2 h. Ⅱstage finishing temperature 920 ℃than open.

7. That should pay attention to prevent waves rolling sickle shape, bending plate shape, etc.

8. Straightening before and during the straightening frequently check and grinding straightening roller surface, in order to avoid roller.