China's first double-stand aluminum cold rolling mill successfully completed the lifting work from July 18th to 19th, marking a new page for China's aluminum processing industry. China's aluminum sheet rolling industry has crossed. A new milestone has started with a full-scale installation. It is expected to enter the trial production stage in December 2008 and deliver production in March 2009. The double-stand cold rolling production line consists of four 90-ton arches. Since the construction of the project, the project has been completed in accordance with the requirements of a high starting point, high speed, and high level. With the joint efforts of all the participating In the smooth progress of the installation, the sixth metallurgical construction company was responsible for the installation. The lifting of the arch was hoisted by two 60tf cranes. In the Southwest Aluminum (Group) Co., Ltd., the cold rolling project is called (1+2) project, which has different concepts from what we commonly call the (1+3) or (1+4) hot rolling line. The former is Composed of a 2000 mm single-stand cold rolling mill and a 2000 mm twin-stand cold rolling mill, there is no mechanical connection between them, but they are located at the same rolling line height, and products rolled over each other cannot be immediately Into another rolling mill; the meaning of the latter is that the production line consists of a hot roughing mill and a 3-stand or 4-stand hot finishing rolling line, which are not only on the same rolling line, but also by the roller path. By connecting them together, the thick-rolled aluminum strip can immediately enter the tandem rolling line. If the rough temperature at the end of the rough rolling is too high, it can be cooled on the roller path by spray emulsion for a short period of time to reach the predetermined temperature before entering the hot finishing line. However, the time is short and does not prevent the roughing mill from working.
The southwest aluminum cold rolling project started construction on April 23, 2007 and excavated the equipment foundation on August 16 of the same year. The headquarters of the installation and commissioning project was established on March 17, 2008, and the elevated warehouse began to be installed on March 21.
As of the end of 2007, the countries with cold rolled aluminum strip production lines include the United States, Japan, Germany, France, South Korea, Russia, and Brazil. In 2009, China will be among them.