I believe there must be a lot of people have encountered the surface of the copper plate or copper strip has occurred peeling or pits, due to these reasons caused by the final thing can not be used ......
This is really a very headache problem, because once the surface has pits or pitting, peeling phenomenon, will cause the whole plate can not be used, for many units will be a big waste, the cost also followed by a lot of increase!
But what exactly is the cause of this? What can be avoided?
Cold rolled copper plate surface will sometimes have peeling, pits, pitting, pitting phenomenon occurs, one of the reasons is that in the processing needs to go through a number of rolling processes. In any one process, the surface is not clean there will be oxides attached to the surface of the copper plate, the next rolling, it is rolled in the copper plate, resulting in the final copper plate in the finished product processing, the oxides fall off, then pits, pockmarks and other defects are formed.
To give a simple example, when rolling with a rolling pin on the surface of the cake sprinkled with a few sesame seeds, then the sesame seeds will be embedded in the cake, but if the last in the process of wrapping the cake sesame seeds fall off, then it becomes a pit!
Another situation is also more common, that is, due to the transportation process of packaging tightness is not enough, resulting in copper plate in the gap between the copper plate is too large, then in the process of transportation due to the vehicle bumps and other situations, caused by surface collision friction! Copper, especially copper itself belongs to a relatively soft metal, in the vigorous collision and friction will inevitably leave an ugly crater, this reasoning and the hand to pinch the pastry will leave an ugly crater a nature.
So from production to transportation, seemingly simple links, but the details are essential!
