WorksheetsWI3000-PD11 COPPER PLATING
Total questions: 10
Worksheet time: 10mins
Which is below equipment used in copper plating line:
i. Jig & Jib hoist
ii. Anode and cathode
iii. Temperature Controller (Calibrated)
iv. Laboratory apparatus
i, ii and iii
i, ii and iv
i, iii and iv
All of the above
How the operator knows if the chemical is contaminated?
By the color of the chemical
By the titration report
From the smell of the chemical
From the product plated
The frequency of performing titration test on specified tanks to verify concentration of solution are:
Prior to copper for each process
After adding chemical or water
After change of chemical
All of the answer
Determination of actual chemical concentration from each solution tank shall be calculated by using specified formula in the _________ and shall be verified by QA/QC Manager and/or chemist and/or QAQC Supervisor.
Titration Test Report
Daily production form - Copper Plating
Current and Time for Copper Plating
Plating Thickness Report
In case that the symptoms of poor conductivity are observed, such as plating peeling off, no plating at all, abnormal plating colour, check the following:
i. Flight bar is over-heated.
ii. Additives and chemicals in the copper plating tanks are out of balance.
iii. Too much sediment or contamination.
iv. Current values displayed at the digital regulator monitor are not consistent once the flight bar is loaded.
i, ii and iii
i, ii and iv
i, iii and iv
All of the above
If plating thickness is observed to have an irregularity or found out of tolerance, check following:
i. Current is not consistent (Current shall be measured by using Clamp meter for verification)
ii. Improper agitation
iii. Improper loading, i.e. the anode bar is not at the center of intended plated item.
iv. Anode has worn off
i, ii and iii
i, ii and iv
ii, iii and iv
All of the above
Thickness of the copper plating shall be checked on the actual __________ or the flat area in front of the seal.
Pin thread crest
Box thread crest
Box thread flank
Seal shoulder
Arrange the process of normalization:
i. Press "Zero" on the Fischer gauge
ii. Check for 5 times
iii. The gauge is ready to be used to check copper plated couplings
iv. Successful Normalization finished screen will appear
v. Place the Probe on the thread crest material to be checked
vi. Press "Enter" on the Fischer gauge
i > ii > iii > iv > v > vi
i > iii > ii > vi > v > iv
i > v > ii > vi > iv > iii
i > v > iv > iii > ii > vi
To remove the hard-bonding of nickel and copper on the surface of the chrome material, a mixture of __________ is used.
10% Nitric acid with 90% of water
100% of water with 50% Nitric acid
50% of water with 100% of Nitric acid
50% Nitric acid with 50% of water
Water pressure test Pressure: _________ bar.
150
120
110
100
