TROUBLE SHOOTING IN NICKEL PLATING

Problems

Pictures

Causes

Solution

Lack of bright

Low brightener additives

Add   0.1ml/l KM NEW SHINE NICKEL BRIGHTENER additive

Low current density

Increase 0.5 A/dm²  and check

pH low

Adjust pH to about 4.2-4.6 optimal 4.4

Pollution of organic impurities

Use activated carbon filter

The areas of low current density are black or gray

Contaminated with copper, zinc and iron

Use iron reducing agent NP 1090 4-8 ml / l

Use copper and zinc reducing contaminants NP 1099 0.1-1ml / l.

Run dummy with low current density of

0.2-0.5 A / dm2

The coating is rough

The solution is dirty

Run the circulating filter

The anode bag (terminal bag) is punctured or the solution level is higher than the top of the bag.

If punctured, replace the bag.

If the liquid level is higher than the top of the bag, pull the top of the bag high above the solution level.

Tank have precipitated CaSO4

Increase the temperature to above 65 ° C and filter

Inefficient filtration system

Check to overcome the filtering system

The coating is layered - blistered

The power supply is not good or the power supply is unstable

Handling increased power conductive , check rectifier

brightener additives is too  high

Run through activated carbon filter column or dummy low flow of 0.5 A / dm2

Activation is not good, pretreatment is not good

Test and make new active tank and pretreatment tank.

The coating has air bubbles, air ptting

Poor aeration

Tăng cường sục khí

Lack of additives against pitting

Add slowly NICKEL WETTING AGENT and hull cell test before adding in the tank.

Organic contamination

Filter through activated carbon filter system

The coating is burnt

Low temperature

Maintain the temperature between 55-60 oC

Low NiSO4 salt

Analysis and addition of standards

pH is too high

Adjust pH to about 4.2-4.6 optimal 4.4

Low H3BO3 content

Analysis and addition of standards

Cl^- ion is low

Analysis and addition of standards

Current density is too high

Decreasing current density