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7A04铝合金本体锻件,在表面处理后发现个别件过烧。由于本体零件加工工序多,生产周期长,生产成本高,为了减少生产损失,需采用电导率涡流检测进行铝合金无损鉴别。通过试样检测,得出试验件临界过烧的结论,然后对本体零件逐个进行电导率涡流测量,根据测量结果,划分验证分析范围。结合金相组织检测分析,得出临界电导率判定值,从而将正常与过烧组织零件进行鉴别区分。
7A04 aluminum alloy body forgings, after the surface treatment found that individual pieces of over burning. As the body parts processing steps, long production cycle, high production costs, in order to reduce production losses, the use of conductivity eddy current testing for non-destructive identification of aluminum. Through the test of the sample, the conclusion of the critical burning of the test piece is obtained, and then the conductivity eddy current measurement of the body parts is carried out one by one, and the verification analysis range is divided according to the measurement results. Combined with the detection and analysis of the microstructure, the critical value of the conductivity is obtained, so as to differentiate the normal and over-burned tissue parts.