Dear Sir,
I am working in sheet metal press shop manufacturing auto ancillary. Can you help me in process validation for press operations

Atul

Dear Sir,
I am working in sheet metal press shop manufacturing auto ancillary. Can you help me in process validation for press operations

Atul

What specifically do you need to know?

Dear All

Can anybody will provide process validation format for press operations

Hello Atulpatil,

Please help me out here: are you referring to printing press? Newspaper reporting? Or grape press? Or pressing (ironing) garments? Or a laminating operation? Or a metals/plastic/some other forming operation? What? I'm not trying to be cute; my Thesaurus listed over a dozen synonyms of the word press.

Also, what standard, if any, are you operating to?

I've merged the posts from another thread to keep your discussion all in one place.

Hellow Sir,

I am asking regarding sheet metal press shop/stamping presses operations are like blanking, draw, trim, forming, slotting, piercing, etc

Regards,

Atul

The information you have requested is too vague to provide any more than general information. I would suggest you read through some of the threads in the APQP and PPAP area, starting with http://elsmar.com/Forums/showthread.php?t=31196

If you then have more specific questions on for example PFMEA, Run at Rate, ISIR, etc. then please ask and I'm sure you will get any help you need.

Dear Sir,

After APQP phase & during trail run of PPAP batch process validation is carried out earlier days we are doing that activity for only special process like welding from that we are defining min & max limits now our customer is asking same activity for stamping press operations during production process affeting paramters must be validated.

Dear Sir,

After APQP phase & during trail run of PPAP batch process validation is carried out earlier days we are doing that activity for only special process like welding from that we are defining min & max limits now our customer is asking same activity for stamping press operations during production process affeting paramters must be validated.

Stamping is a different type of process to something like welding. With welding, by controlling parameters such as voltage, current, wire speed, etc. you can ensure that the product will be consistant.
Stamping, however, is a different matter. The process is very dependent on variation of the material properties of the steel. A press can be set with a tonnage that works for one batch of material, but the same settings may not give the required result for the next batch.
The material thickness, tensile strength and yield strength can vary within quite broad specifications, therefore the tonnage must be adjusted to suit the material.
If your customer insists on control of parameters, you can issue target settings for the press with a tolerance which may be used to allow for material variation.

Dear Sir,
I am working in sheet metal press shop manufacturing auto ancillary. Can you help me in process validation for press operations

Atul
Follow the procedure steps given below:-
1)Inspect the press tool as per tool drawing
2)Document a tool set-up procedure
3)Carry out tool set up as per procedure
4)Produce first off part
5) Inspect the first off as per part drg.
6)If found OK produce 5 more parts
7)Inspect all five parts as per drg.
8)If all five are ok as per drg. Approve the set-up and proceed production
9)Inspect one part every hour and ensure they are ok
10)After the lot quantity is produced inspect the last off part as per drg.
11)If the lost off pat is ok the process is validated successfully
12)Preserve all inspection reports and documents referred above in one bunch.
13)SHOW THEM TO THE AUDITOR WHEN HE ASKS FOR PROCESS VALIDATION RECORDS
V.J.Brahmaiah

Yes, in welding we can controll parameter like Current, Voltage Gas Flow Wire Feed Etc, but in press operations e.g. for draw operation we can set min & max parameters for cushion pressure, cushion pin height, no of cushion pins, cushion pin layout etc but my problem in during blanking & other operation which paramter to be control & how. Also we are considering raw material properties are variables but they are within the tolerance limits as per our Indian Standards & are acceptable to customer.

Yes, in welding we can controll parameter like Current, Voltage Gas Flow Wire Feed Etc, but in press operations e.g. for draw operation we can set min & max parameters for cushion pressure, cushion pin height, no of cushion pins, cushion pin layout etc but my problem in during blanking & other operation which paramter to be control & how. Also we are considering raw material properties are variables but they are within the tolerance limits as per our Indian Standards & are acceptable to customer.

With blanking, the only parameters which would effect the customer would be the feed rate and the press strokes per minute to monitor efficiency.