METHOD OF THERMAL STABILISATION OF SIZES OF PRECISION INSTRUMENT PARTS FROM D20 HARDENED ALUMINIUM ALLOY

摘要

FIELD: metallurgy. ^ SUBSTANCE: proposed method comprises artificial ageing at 170+5C in two steps, eight hours each. Note here that, after first ageing step, machining is carried pout while second ageing step is combined with stabilising tempering. ^ EFFECT: reduced duration of processing and stabilisation. ^ 1 ex, 1 tbl