----- Original Message -----From: skrie85Sent: Wednesday, August 18, 2010 4:58 PMSubject: Re: [MW:6562] Difference welder and welding operatorTack welder need to qualify or not?
From: Karthik <karthik6684@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Wed, August 18, 2010 3:48:47 PM
Subject: Re: [MW:6556] Difference welder and welding operator
Hi,
Please find below the definition of welder and welding operator and tack welder.
WELDER:
A welder is one who performs a manual or semiautomatic welding operation.This includes welding with torch,gun or electrode holder held and manipulated by hand.Part motion devices and manually controlled filler metal feeders may be used.Semi automatic welding is manual welding with equipment that automatically controls one or more of the welding conditions,usually filler wire feed.A welder would commonly perform shielded metal arc,gas metal arc,and flux cored arc welding.
WELDING OPERATOR:
A welding operator is one who operates adaptive control,automatic,mechanized,or robotic welding equipment.Automatic welding is with equipment that reqires occasional or no observation of the welding and no manual adjustments of the welding controls.Mechanized welding is with equipment that requires manual adjustment of the equipment controls in response to visual observation of the welding,with torch,gun or electrode holder held by a mechanical device.Most submerged arc welding setups would fit in to this category.
TACK WELDER:
A tack welder is a fitter,or someone under the direction of a fitter,who tack welds parts of a weldment to hold them in proper alignment until the final welds are made.
Thanks & Regards,
(Karthik)
Karthikeyan.SQA/QC ManagerGetabec Energy Co.,Ltd.379,Moo6,Soi8,Nikhomphatana,Rayong-21180,Thailand.Phone: 0066 38 897035-8 (Off)Fax: 0066 38 897034Hand Phone: 0066 892512282
--- On Wed, 8/18/10, skrie85 <skrie85@yahoo.com> wrote:
From: skrie85 <skrie85@yahoo.com>
Subject: [MW:6554] Difference welder and welding operator
To: materials-welding@googlegroups.com
Date: Wednesday, August 18, 2010, 12:33 PM
Dear all,
What difference "welder" and "welding operator" stated in ASME IX?
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
Thursday, August 19, 2010
Re: [MW:6578] Difference welder and welding operator
Hi
As per AWS D1.1 , Tack welder have to qualified.
As per ASME Sec IX , tack welder has to be qualified by fillet weld qualification.
Rgds,
K.Babu
Singapore
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