The formation process of austenite in packaging steel strip and the significance of crystal position

The formation process of austenite in packaging steel strip and the significance of crystal position
　　The heat treatment of steel refers to the changes in the internal structure and crystal structure of the steel during heating and cooling. The purpose of heat treatment of the packaging steel strip is to obtain the desired metallographic structure and mechanical properties, which is an extremely effective process method to exert the potential performance of metal materials. To understand the effect of heat treatment on the structure and performance of the packaging steel strip, according to the work of the packaging steel strip Conditions, technical requirements, and meeting its long service life, etc., must be selected reasonably, taking into account both economics and technology. The so-called economy refers to the use of low-cost materials under the premise of meeting the requirements of the packaging steel belt; while the technicality is mainly convenient processing, easy to perform mechanical processing, that is, good processing technology, competent service conditions, and a certain service life, and at the same time The material has good properties such as forging, welding, forming and heat treatment. The heat treatment process of packaging steel strip is composed of three stages of heating, heat preservation and cooling. According to the different heating temperature, cooling method and use requirements, heat treatment is usually divided into annealing, normalizing, quenching and tempering processes. Discussion on heating and The law of structure change during cooling is the principle of heat treatment.