About thickness of molten metal layer under arc in submerged arc surfacing

摘要

Method for estimation of thickness of the molten metal interlayer during arc surfacing is suggested. Processes of melting (fusion) of refractory inserts of tungsten and tantalum by the welding arc, as well as their dissolution under the effect of the molten pool metal are considered. It is shown that removal of the molten pool metal during surfacing allows improvement of reliability of the data on thickness of the molten metal interlayer under the arc.