Monday, July 29, 2013

[MW:18283] Fwd: WPS for Production or Maintenance of Machinery Parts


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DON BOSCO MARITIME ACADEMY
Premier Automobiles Road, Opp. HDIL Complex,
Kurla West, Mumbai 400070
Tel: 2504 1585 / 2018; 25036344. Fax: 2504 0682
Mobile No:  9819451277
Email donboscomarine@vsnl.net
Website www.dbma.in


Dear All,

I have the following Query :

How is a WPS made for for a Specific Production Job?  How does one go about making a WPS for say, building up of a shaft or building up of a Valve Body or maybe Pump Housing and similar - Production or Maintenance jobs.  This can be overlay or it can be welding for repairs of cracks or any holes developed or corrosion affected areas and similar. 

The Standard WPS of Welding of a single or two metals with a definite filler either in Plate or Pipe form, and in a designated position in either Fillet or Lap or Corner or Butt and with a suitable process is known to us but the above may not be a standard job and the jobs also may be small in dimensions. 

My next doubt is:
What if the job dimension change in the above case?  Do we have to make a separate WPS and qualify the welder for every different job? Or we can qualify the welder in a generic form meaning, if he can overlay a given parent metal plate with designated filler, he should qualify for this particular welding process after applying the essential and non essential variables criteria from Sec. IX. for different/ separate jobs.

Thanks in advance.

G. A. Soman


--

DON BOSCO MARITIME ACADEMY
Premier Automobiles Road, Opp. HDIL Complex,
Kurla West, Mumbai 400070
Tel: 2504 1585 / 2018; 25036344. Fax: 2504 0682
Mobile No:  9819451277
Email donboscomarine@vsnl.net
Website www.dbma.in

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