Norstan, Inc.

Operators/Inspectors

1. Always match material tag against print before checking parts to insure correct material is being used.

2. Determine order quantity and next operation (aids in judgement calls).

3. Study quality history file for previous rejections or complaints.

4. Study print for part configuration, I.D. marks, indents, undercuts, cavity die/head in hammer, special notes, etc. to determine completeness of
part.

5. Visually check for flashes, peels, shears, hammer marks, voids, tails, rings, face finish, dig ins, shank marks, fillets, etc.

**All of the above should be done before dimensional checks are made.

6. Cracked pin across weld projection of coined part is OK if not measurable on optical comparator.

7. If Ag Cdo pre-ox part is annealed it normally will be double headed consequently the finish on the shank end will be more critical.

8. Noble metals such as gold, platinum, palladium and their alloys are very costly and should be handled as such.

9. Ag Cdo, Ag C, Ag Ni, Ag Fe, etc. materials are brittle and prone to cracking. They are used in switches for automotive and appliance controls.

10. Fine silver has the highest electrical and thermal conductivity. This material resists oxidation.

11. Ag Cu, Ag Cd, Ag Pd, etc.is used in high in rush applications such as motor starters. Contamination not as critical.

12. Tungsten is highly resistive to wear and welding closed. It is used in horn relays and business machines. It is brittle and has a tendency to
crack.

13. Usually the smaller the part is the lower the current application, consequently the part must be free of contamination and have a good face finish.

14. Steel base metals, (especially those with holes) should have a light oil film on them prior to plating. This will prevent rust and pitting.

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©1999 Norstan Inc.