Clear anodizing refers to the electrochemical process
While clear anodize can be dyed, it should be done fast and following the acid bath. The downside of this technique is that the layer of the oxide is not as sturdy as with the other methods. This is why the metal is not always used for engineering or building. Clear anodize method is one of the easiest to do. The anodized metal usually becomes wear resistant, preventing rust from occurring in any way.
Following clear anodize, the metal color can be changed by dipping it into a dye before having it dipped in the water. If it takes much time then there could possibly be problems with the oxide layer's permanence. While clear anodize is well known for a lot of things, it also has a disadvantage. The temperature of the water and the procedure where the metal is anodized could mean that the layer of the oxide is not as well-built as other anodizing methods.
In order for the anodized metal to become stronger, the use of harsher acids and cold water may be recommended. This, however, will constitute a different anodizing technique. In comparison to chromic acid anodizing, clear anodize offers better wear resistance and comparable corrosion resistance.
Used in a wide array of applications, clear anodize method benefits different industries like (1) automotive, for utilization in housings and trim for different exposed parts; (2) architecture, for utilization in door frames and window, siding and railings; (3) printing, for utilization as marketable photolithography plates and (4) industrial manufacturing, for metal sheet and different extrusions like cases and profiles for extra surface protection.
Other benefits of clear anodizing may include the following:
Basically, the process involved in clear or sulfuric anodizing is identical with that of Type II sulfuric anodize acid, which is a commonly used process, requiring the metal to be immersed into a sulfuric acid.
Distinctions Between Clear and Hardcoat Anodizing
Hardcoat and clear are anodic finish types that result from customary anodizing process. Normally, a thicker and denser oxide coating is produced. Sulfuric anodizing offers corrosion protection in minimum wear protection and mild environments. Specification figures out the coating thickness. Hardcoat anodizing produces a denser and thicker coating than sulfuric anodizing.
Normally, in hardcoat anodizing, the thickness of the film ranges from 3 to 21 times that of the other kind of anodizing process. Hardcoat anodizing is also dielectric, so may be utilized to shield assembly components. Lastly, hardcoat anodizing is much expensive than clear anodizing.