Notes

Evaluation of Peeled-off issue for Electro-plating and also Powder finish parts
1. Reasons bring about layering layers removed and safety nets for Electro-plating components:
1) The crucial to accomplishing excellent attachment is to ensure an active metal surface completely void of oils, oxides, alloying additions or heat reward scale. If pretreatment is not well done, the contaminations continued to be on metal surface area will certainly weak the bond.
Safety nets: check every batch to see to it the removal of oil is thorough, the cleansing water is tidy, the concentration of acid seeping remedy is hefty as called for as well as the etching time is enough.
2) It might be that the interruption of the existing in the electroplating process triggers the bad combination between the nickel layer and product, and also this present disruption phenomenon may be triggered by the poor conductivity of the hanging gadget.
Safety nets: daily check the hanging gadgets to make sure there is no damages.
3) When the brightener is added way too much, the bonding force between plating layers is not good.
Preventive measures: everyday check the electro-plating remedy consisting of brightener to be made according to requirements.
4) PH worth, electrical present, temperature could additionally be the causes.
Preventive measures: day-to-day check the electro-plating service and plating tools.

2. Reasons cause insufficient as well as peeled-off covering as well as preventive measures for Powder covered components:
1) Insufficient covering:
air blow gun
If the finish line is automatic, it could be the causes that the turning speed of hanging gadgets as well as range between components and blowguns are as well far or also close. The tiny settings inside the dental caries can not be totally covered with coating powder.
If the covering line is hands-on, workers didn't do a qualified job.
Stainless steel Casting
Safety nets: For automated layer line, set up the correct revolving rate of hanging range between components and also blowguns. For manual line, educate the workers to work even more mindful and examine every item.
2) Peeled-off finishing:
Keys reasons could be Pretreatment insufficient, Drying time too brief or temperature level as well reduced.
Safety nets: Pretreatment to get rid of the contaminations have to be comprehensive, such as oil, lubricant, oxides, alloying additions or warm treat scale.
Lengthen the drying out time or set up a greater drying temperature level according to work direction.


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