A PROCESS AND AN APPARATUS FOR HOT DIP COATING A STEEL STRIP

摘要

In a continuous process in a coating apparatus, a steel strip (18) is continuously immersed in a bath of molten metal that essentially comprises aluminium and zinc (melting pot 11). The strip (18) is rapidly cooled to about 200°C and the coating is worked by passing a pair of work rolls (15). Then, the coating is held at about 200°C for some minutes only, which overages the coating. Thus, the process of coating, working and overaging is carried out in a continuous process.