铝合金热处理时,特别容易产生过烧,过烧后,引起机械性能的剧烈降低,一般传统的方法都是费工时的金相方法。本试验结合生产,用测量零件电阻或电导率的方法来检查零件的过烧。对常用铝合金给出了电导率过烧的极限数据,对国产电导率测量仪给出了绝对值换算曲线(M/Ω.MM~2) Aluminum alloy heat treatment, particularly prone to over-burning, over-burning, causing dramatic decline in mechanical properties, the traditional methods are generally working hours of the metallographic methods. This test combined with production, with the measurement of part resistance or conductivity method to check the parts over-burning. For the common aluminum alloy, the limit data of the overconductivity of the electric conductivity is given, and the absolute value conversion curve (M / Ω.MM ~ 2) is given to the domestic conductivity meter.