Tuesday, December 21, 2010

Re: [MW:8848] LOP in MIG Welding Qualification

Dear Sir
The current used is very less. Please increase it to more than 250 A and keep a voltage of 24 . the speed of trevael should be 5mm/sec.
With regards
Arijoy Roy

--- On Mon, 20/12/10, Muni Andy <cmkfc07@gmail.com> wrote:

From: Muni Andy <cmkfc07@gmail.com>
Subject: [MW:8840] LOP in MIG Welding Qualification
To: materials-welding@googlegroups.com
Date: Monday, 20 December, 2010, 5:54 PM

Dear All,
Recently I have noticed this in one company and want to share with you.
It was a procedure Qualification as per sec IX.
Process is GMAW (MIG).
Plate thickness is 25mm.
Wire Dia is 1.2mm
Root gap is 2.5mm.
Current was 75 A.
After root pass welding found LOP for almost total length.
What is the best way to avoid LOP.
 
Regards,
C.Muniyandi
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