.~ Specific mode of heating or applying pressure {3}
234.2
.~.~ Vapor phase heating
DEFINITION
Classification: 228/234.2
Vapor phase heating:
(under subclass 234.1) Process including utilizing the latent heat of vaporization of a heat exchange medium to heat the work or filler material.
(1) Note. Commonly, work to be bonded is placed with filler in a chamber filled with a normally liquid heat exchange medium, some of which is in the gaseous state, to transfer heat to the work and filler material (and liquify some of the medium) without heating the work above the temperature of vaporization of the medium.
SEE OR SEARCH THIS CLASS, SUBCLASS:
234.1, for a similar operation including transfer of heat from a liquid medium to filler.
