珐琅或底漆轻微退色或没发生退色，表示镀镉层没有受热，可能没有出现镉脆情况。

Slight or no discoloration of the enamel or primer may indicate the cadmium plating was not heated to the extent that cadmium embrittlement would be suspected.

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如果轴的内径上的珐琅、底漆、镀铬层退色或镀镉层损伤，应当在部件投入使用之前拆下热损部件。

Discoloration of the enamel, primer, or chrome or evidence of cadmium damage on the inner diameter of the axle may require the heat-damaged component be removed from service.

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