Flame spraying process for materials requiring fusion

摘要

An improvement for the flame spray process in which a heat-fusible self-fluxing material is heated in a heating zone to at least heat-softened condition and propelled in such condition out of said zone in finely divided form onto an obscure substrate surface of a base article. An obscure substrate surface may be such that conventional fusing techniques are not suitable for use in final bonding of the flame spray material to the substrate. The invention includes the use of an ordinary commercial soluble silicate solution applied to the coated substrate surface, solidified by furnace fusing, and removed by attrition to provide a base article which may be further processed to predetermined dimensional tolerances.