PPAP Requirements for Plating a "Family of Parts"

V

vardar3

#1
Our platers plate several parts. If the parts they are plating has the same material callout, could they PPAP all parts with same material and plating as a “family of parts” under one PPAP?
 
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Jim Wynne

Staff member
Admin
#2
Re: Plating "Family of parts"

Our platers plate several parts. If the parts they are plating has the same material callout, could they PPAP all parts with same material and plating as a “family of parts” under one PPAP?
By "material callout," do you mean that the material specifications and plating specifications are the same for all of the parts? The answer to your question will ultimately have to come from your customer(s). At the least I would expect a separate PSW for each part number, even if everything else is the same. If I were your customer, I would also want to see (and approve) your plater's PFMEA and control plan.
 
I

iamtroll

#3
Base material and plating material is probably not enough to call a group of parts a family. At a minimum I think that you need to consider part configuration, racking methods, time in tank and amperage since these can vary significanlty in your processing. Some customers, particularly medical customers may limit you to a unique tank and require a validation while aircraft customers could include a frozen process requirement. Other customers may be more lenient but those are just a few of the considerations that could come up in a plating PPAP that could influence the family groupings.
 
H

hkrishnan1983

#4
Re: Plating "Family of parts"

Jim,

If you were his customer, what level of PPAP you ask for? Level 2?

if yes, does the level 2 PPAP requires PTR?

Can you pls tell us how to do product & process validation for plating parts?

Pls share your views...

Thanks, Harikrishnan
 

Jim Wynne

Staff member
Admin
#5
Re: Plating "Family of parts"

Jim,

If you were his customer, what level of PPAP you ask for? Level 2?
The PPAP level would depend on the level of risk involved.

if yes, does the level 2 PPAP requires PTR?
I don't know what you mean by "PTR."

Can you pls tell us how to do product & process validation for plating parts?
This is too deep a subject for a comprehensive answer here. The first step is to determine the performance requirements of the product. This could involve cosmetic issues, corrosion resistance and a number of other considerations. Once established, the idea would be to design a plating process that will yield the desired results, run the process, and test the parts. The variables in the plating process--things like bath chemistry, temperature, current, agitation---must be identified and controlled such that the desired result is consistently achieved.
 
H

hkrishnan1983

#6
Re: Plating "Family of parts"

PTR is production trial run or run at rate. It is coming in 4th phase of APQP(product and process validation) to quality mfg and quality capability of suppliers.
 

Jim Wynne

Staff member
Admin
#7
Re: Plating "Family of parts"

PTR is production trial run or run at rate. It is coming in 4th phase of APQP(product and process validation) to quality mfg and quality capability of suppliers.
What you describe as "production trial run" is not the same as run at rate. The latter typically takes place after PPAP approval.
 
H

hkrishnan1983

#8
Re: Plating "Family of parts"

pls tell specific difference between PTR & Run @ Rate...
 

Jim Wynne

Staff member
Admin
#9
Re: Plating "Family of parts"

pls tell specific difference between PTR & Run @ Rate...
The Production Trial Run in Phase 4 of APQP is the PPAP "significant production run." It's the production that the PPAP submission is based on.

Run at rate, on the other hand, typically happens after PPAP submission and approval. It's confirmation that the process is capable of performing in accordance with the evidence provided in the PPAP submission, and the information regarding production rate provided to the customer. Run at rate may or may not involve the presence of customer representatives.

Keep in mind that the definitions I've given might be different or interchangeable depending on local usage.
 
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