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+5°C 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