OREANDA-NEWS. June 24, 2011. Since this year, the S6 mill of Baosteel Co., Ltd. Stainless Steel Business Unit's hot strip annealing and pickling line registered consecutive growth at the speed of 500t every month and achieved the excellent results of "5 consecutive growth", laying the foundation for further enhancement of the total process capacity of stainless steel cold rolling.

S6 mill technology is a domestic creation and mainly applied for the production of 2E sheets and cold rolling intermediate products. Since S6 mill started trial production, due to many reasons such as instable equipment and immature process technologies, etc., normal production is never possible. Since this year, on the basis of careful analysis and summary of the production experience of S6 mill in the past, cold rolling plant set up the working philosophy of rational arrangement of production organization, enhancement of operation and control level; renovation of key equipment technologies to guarantee the equipment function accuracy; accumulative optimization of rolling process and sustained improvement of roll assembly standards. A S6 mill task force consisting of equipment plant director, chief engineer, technician, maintenance personnel and operation personnel is set up especially. In view of the bottlenecks including electrical system of S6 mill constraining the capacity increase, the task force designated the responsible people for mechanical, electrical and process aspects of S6 mill and carry out all-round brainstorming. Meanwhile, the task force sped up the capability to control S6 mill through monthly training and analysis of equipment accidents; reduced the roll change time of S6 mill roll assembly through 6 sigma project. These series of measures enabled the equipment to operate more stably, extended the service life of key equipment considerably and strengthened the rolling capacity greatly. In April the best record of 46.6 hours of continuous rolling without any accident was registered.