runner plates

[shaik amjad]

Greetings

what is significance of runner plates in structural welding, and the how they are used.

[Alan Denney]

I think you are referring to the plate used attached to the ends of longitudinal seams. These are commonly used in submerged arc welding and are there for the arc conditions to stabilise before the arc progresses onto the actual joint to be fabricated. They are then removed on completion of welding.

 

Alan Denney

AKD Materials Consulting Ltd

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[GENE MATSKO]

'Runner plates' are metal extensions which are sometimes attached to the top of vertical seams or vertical  weld test plates. These runner plates are generally  called  'Runoff' plates. They will not be specified in the weld / job specifications or codes. They are used by 'experieced' welders who want to prevent the large weld crater or shallow area that comes when a welder terminates his vertical weld at the end of the plates. The runoff plate is generally tack welded to the top back side of the vertical seam being welded. It generally extends 3-6 in. above the top of the test plates. The welder then can continue his weld upward

beyond the 'terminus' of the vertical plates on to the 'Runoff or Runner plate thereby assuring the 'terminus' will be full of metal and not shallow. When the weld

is completed the welder will simply grind off the runoff plate assuring the top is full of weld metal and not shallow. This is very important in welding the multiple plates of a pressure vessel or tank. I hope this explanation will be of benefit to you.

Sincerely,

Gene Matsko

GEM Weld / Materials Consulting Ltd

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From: Alan Denney <al...@denney1.freeserve.co.uk>
To: material...@googlegroups.com
Sent: Saturday, July 16, 2016 8:27 AM
Subject: [MW:25108] RE: 25105] runner plates

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/000801d1df65%24d1520780%2473f61680%24%40denney1.freeserve.co.uk.