As a packaging material for canned food and beverages, tinplate plate is scrapped after one use, giving people the illusion that it is not worth paying attention to, but it is actually absurd, because:
1. In the smelting of the steel used to manufacture tinplate spte, it is required that the types, properties and contents of various residual metals and non-metallic impurities must be strictly controlled. Its control methods, indicators and detection methods are not yet complete in my country.
2. In the subsequent operation and control of hot rolling, cold rolling, previous cleaning, quenching and tempering annealing, leveling and other processes, there may be many spte tinplate material quality problems that may be caused (or affected), and these problems, Most of it hasn't been thoroughly eaten.
3. In most tinplate plate factories in our country, dozens of related technical topics in the tin electroplating process such as cleaning, tinning, reflowing, passivation, and oiling, are only preliminary and far from handy.
A tinplate spte cold-rolling production line with a length of more than 1000m, it rolls 1.5 to 1.7m wide strip steel plate, the speed of the tinplate plate is 30m/s per second (this is only a medium speed), and the thickness of its products is mostly in The range of 0.25 to 0.17mm (in the 1990s, the developed countries in the United States and Japan could easily roll thin plates with a thickness of 0.14 to 0.075mm), this kind of high speed and high precision (the average thickness error of each point should not exceed ± 4 %). For equipment with strong power and great power, the surface finish of its spte tinplate material needs to be mirrored, which is of course high technology.