Lubrication of New Metals During Heat Treatment and Forming

WITH many new alloys being developed from various metals for aeroplane construction, fresh and difficult problems are being encountered in the endeavour to acquire for these metals the sort of background that has been achieved for the aluminium alloys. One of the problems encountered has been the lubrication and protection of such metals during hot forming and heat treatment at very high temperatures and one lubricant that has been developed by Boeing Airplane Company, of Seattle, Wash., U.S.A. in this connection has been of the ceramic family.