Notes

Analysis of Peeled-off issue for Electro-plating and Powder coating components
1. Steel Press fitting lead to plating layers peeled as well as preventive measures for Electro-plating parts:


1) The essential to achieving great bond is to make sure an active metal surface area adequately devoid of oils, oxides, alloying inclusions or warmth treat range. If pretreatment is not well done, the contaminations stayed on metal surface will weak the attachment.

Preventive measures: inspect every batch to make sure the removal of oil is comprehensive, the cleansing water is tidy, the focus of acid seeping remedy is heavy as called for and also the etching time suffices.

2) It might be that the disruption of the present in the electroplating procedure triggers the poor mix in between the nickel layer and also item, and this current interruption phenomenon may be caused by the inadequate conductivity of the hanging device.

Safety nets: daily check the hanging devices to see to it there is no damage.

3) When the brightener is added way too much, the bonding force between layering layers is bad.

Preventive measures: everyday check the electro-plating solution including brightener to be made according to standards.

4) PH worth, electric current, temperature level might additionally be the reasons.

Safety nets: day-to-day check the electro-plating remedy as well as plating devices.

2. Reasons lead to incomplete and also peeled-off finishing and also safety nets for Powder layered components:


1) Incomplete finish:

If the covering line is automatic, it could be the causes that the rotating rate of hanging tools as well as distance between parts and also blowguns are also much or as well close. Zinc Die Casting inside the cavity can not be entirely covered with coating powder.

If the coating line is hands-on, workers didn't execute a professional job.

Safety nets: For automatic covering line, set up the correct revolving rate of hanging distance between components and blowguns. For manual line, educate the employees to work more careful and examine every item.

2) Peeled-off finish:

Mains reasons could be Pretreatment not enough, Drying time also brief or temperature too low.

Stainless steel Forging : Pretreatment to eliminate the contaminations must be thorough, such as oil, lubricant, oxides, alloying incorporations or heat reward scale.
Lengthen the drying time or set up a greater drying temperature according to function guideline.

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