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Information / Worth knowing before anodizing / Suspension points

Suspension points

Specifically, the aluminum product is fixed in a suspension rack with clamps before it is surface treated by immersion in process baths. In the baths, current is transferred to the product as part of the treatment. The terminals leave a non-anodized mark – also called a contact mark.

Before the process can be initiated at HAI, we must have received drawings of the items with a clear indication of where the contact marks must be and what is visible and non-visible side.

In cooperation with HAI the optimal location of the clamps is determined so that they do not affect the final function and appearance of the product.

Rod on the back - not visible side

Stang

Groove mark on back - not visible side

Rille

Installation in holes

Stick

Clamp on edge

clamp

10 mm circle - not visible side

Circle

1 mm dot in one corner - not visible side

Dot

Clamp in internal holes

Inside

30 mm at both ends - not visible side

Ende

Examples of placement of contact marks

Here are examples of drawings with clear indication of contact marks and visible side. Get hold of us at HAI, if you are in doubt about the position of the contact marks. 

Contact marks, anodizing
Contact mark, anodizing
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