Aluminum products manufacturers may encounter such problems, aluminum stampings or aluminum alloy die castings are yellow after cleaning. Why is this?
Generally, aluminum products need to be ultrasonically cleaned (unless they are low-end products), and no discoloration may occur during cleaning, but yellowing begins to appear shortly after effluent or after a period of time. In fact, when you talk about the problem, you know it, just in the cleaning process. The only thing that affects the change of aluminum is the cleaning agent and water quality, and the general water quality is no problem. So it should be the problem of cleaning agents.
To clean aluminum products, we must use a special aluminum cleaning agent. The aluminum cleaning agent is completely neutral, with a pH of about 7, and does not have any chemical influence on the material elements.
In some cases, some places where the cleaning product appears will be yellow, and some will not. In fact, this is also the effect of cleaning. This kind of phenomenon is generally a weakly alkaline cleaning agent. He may not see the problem of cleaning ordinary aluminum parts, but it can compare the bad hair to some mirror parts.
Therefore, in the cleaning of aluminum products, it is necessary to use a completely neutral special aluminum cleaning agent.
Product categories of Accessories Equipment ,we are specialized
manufacturers from China , Accessories Equipment,sheet rollforming machine,
suppliers/factory,wholesele high-quality product of Accessories Equipment,
R & D and manufacturing , we have perfect after-sales service and technical support . Look forward
to your cooperation !
Accessories Equipment
Bending Machine,Cutting Machine,Hydraulic Bending Machine,Manual Cutting Machine
BOTOU HUATONG CORRUGATED MACHINERY MANUFACTURING CO.,LTD , http://www.htrollforming.com