Improvements in or relating to the production of plated bearings

摘要

Metal powder mixtures to be sintered to form porous bearings, (see Group XXII), comprise in one example 98 per cent iron, 1 per cent graphite and 1 per cent calcium stearate; in another example 73 per cent iron, 25 per cent copper, 1 per cent graphite and 1 per cent calcium stearate, and in a third example 69 per cent iron, 27 per cent copper, 3 per cent tin and 1 per cent stearic acid.