发明名称 |
ANNEALING AND PICKLING PROCESS |
摘要 |
A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050° C., in an atmosphere with an oxygen content comprised in the range from 0.5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200° C. in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650° C. to ambient temperature in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions. |
申请公布号 |
EP2102376(A1) |
申请公布日期 |
2009.09.23 |
申请号 |
EP20070847161 |
申请日期 |
2007.11.14 |
申请人 |
DANIELI & C. OFFICINE MECCANICHE S.P.A.;CENTRO SVILIPPO MATERIALI S.P.A. |
发明人 |
DULCETTI, ALESSANDRO;PAVLICEVIC, MILORAD;ZACCHETTI, NICOLETTA;PRIMAVERA, ALESSANDRA;LUPERI, STEFANO;LATTANZI, LUCA;GUANIN, SIMONE |
分类号 |
C21D9/56;C21D9/52;C25F1/06 |
主分类号 |
C21D9/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|