Thursday, April 29, 2010

Re: [MW:4997] DSS pipe cutting

Please check with your machine manufacturer if it is suitable for mixed gas
This will give a far cleaner cut and will remove the possibilities of moisture entering into the plasma stream
Best Regards

PHIL CHEW

Global Segment Manager -Transport ,Shipbuilding,M&R

ESAB Holdings Ltd, 322 High Holborn, London, UK, WC1V 7PB

Tel: +44 (0) 7584 219132

email: PHIL.CHEW@esab.net

ESAB Holdings Ltd is a company registered in England and Wales . Co registration no 1687590 Registered Office: 322 High Holborn, London , UK , WC1V 7PB www.esab.comPlease consider the environment before printing this email.


  From: Pratheesh Chandran [chichuprem@gmail.com]
  Sent: 29/04/2010 09:50 ZE4
  To: materials-welding@googlegroups.com
  Subject: [MW:4994] DSS pipe cutting


dear All
 
Please provide your expertise for the below problem
 
I need to take a branch connection of 4" from a pipe 12" A790 UNS 31803 and had been using plasma cutting to do the same. However soon after carrying out the Plasma cutting it was noticed that the inner wall of 12" pipe starts getting corroded due to the sparks impinching on the inner wall of the pipe  arised during plasma cutting ,( attached Photo graphs )
 Kindly advise  how to avoid  the same  or any other suitable precautionary steps to be taken during cutting  on DSS.
 
Regds
Prem

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