Barrier coatings

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 183/02 (2006.01) B05D 1/02 (2006.01) B05D 5/08 (2006.01) B23K 9/32 (2006.01) B23K 35/22 (2006.01) B23K 35/34 (2006.01) C09D 1/00 (2006.01) C09D 1/02 (2006.01) C09D 185/04 (2006.01)

Patent

CA 2443972

The invention relates to a method of preventing a material from adhering to a surface. In a preferred embodiment, the material comprises weld spatter and the surface is located near a welding operation. The method comprises coating the surface with a slurry comprising a mineral material in water. The slurry contains from 10% to 70% solids by weight and not more than 5% by weight of a material that decomposes when heated to 1000~F for one minute. The slurry is allowed to dry to form a barrier coating before the material contacts the surface.

L'invention concerne un procédé destiné à empêcher un matériau d'adhérer à une surface. Dans un mode de réalisation préféré, ce matériau comprend une projection de soudure, la surface étant située au voisinage d'une opération de soudage. Ledit procédé consiste à revêtir cette surface d'une pâte comprenant une matière minérale dans l'eau. Cette pâte contient entre 10% et 70% en poids de solides et moins de 5% en poids d'une matière qui se décompose lors d'un chauffage à 1000·F pendant une minute. Ladite pâte peut sécher de manière à former un revêtement barrière avant que le matériau ne vienne au contact de la surface.

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