Dear Subrata ,
I am also clueless about this BUTTERING.One of the WPS with me clearly mentioned two buttering layers in between hot and filling.But the current,voltage and electrode is same what we used to execute hotpass !!! so I feel the depth of penetration will be equivalent to hot pass.Some of our seniors advice is required to clarify our doubt "WHAT IS MEANT BY BUTTERING ".
On Sat, Jun 12, 2010 at 12:57 PM, Subrata Das <sdas@pkgroup.org> wrote:
--Dear Sir
Can anyone describe me what is "BUTTERING" stands for in welding joint. If it is done before depositing the weld metal on job, is it necessary to remove the same by back chipping.
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