Many people have encountered copper or copper strips on […]
Many people have encountered copper or copper strips on the surface of the copper strips or pits. For these reasons, the last thing can't be used. Indeed, this is a very difficult problem, because once the surface has pits or hemp. Point, the phenomenon of peeling will cause the whole board to be useless, the waste will be great for many units, and the cost will increase a lot! But what is the cause? Is there any way to avoid it?
The surface of the cold-rolled copper plate sometimes has peeling, pits, and pitting, and one of the reasons is that it requires a plurality of rolling processes during processing. In any process, if the surface is not cleaned, oxide will be attached to the surface of the copper plate. When the next one is rolled, it will be rolled in the copper plate, causing the oxide to fall off when the final copper plate is processed. Defects such as pitting are formed.
Another situation is also more common, that is, because the tightness of the packaging during the transportation process is not enough, the gap between the copper plates and the copper plates is too large, so the surface collision friction is caused by the bumps of the vehicles during the transportation process! Copper, especially copper itself, is a relatively soft metal. After strong collision and friction, it will inevitably leave unsightly pits. This principle will leave an unsightly pit with the hand to remove the cake.
So from production to transportation, seemingly simple links are essential!