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Location:Home » Industry News » What is scratches? What lead to it? how to avoid it?

What is scratches? What lead to it? how to avoid it?

Source:本站  Editor:Editor  Click count:1475  Date:2013-3-19 9:52:17  【16 14 12

Types of defects you might meet on the chemical etching parts including scratches, dents, finger print, duty or rusty marks.

1. What lead to scratches? How to avoid it?

a. material itself have scratches. When we buy the stainless steel, brass or copper from the supplier, they do not protect the suface of the material.

Way to avoid it:

When source the material, ask supplier to make some protect film on both sides of the metal plate.

We need to check material surface carefully, and will pick out the scratched material, and will not use them to make your parts

b.Human factors lead to the scratches

During the production, worker pick the parts directly without putting on the gloves.This lead to the finger print and scratches

Way to avoid: all worker must put on gloves during the production

c. Surface treatment

Some times, the polishing will make some "spider webbing" scratches on the surface.

Please note that the scratch are very fine lines then 0.1 mm, just like human hair on the plate

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Julid  specializing  in  the  photo  chemical  etching  area.  Typical  chemical  etching  parts  including  shims,  speaker  grill,  encoder  disk,  filter,  leadframe,  etc.
  Julid  Technology  (HK)  Co.,  Limited 

  E-mail:  yw1@zldsmt.com