①對(duì)定轉(zhuǎn)子鐵芯形成腐蝕,引起生銹 ②對(duì)轉(zhuǎn)子護(hù)環(huán)形成應(yīng)力腐蝕,引起裂紋 ③降低定轉(zhuǎn)子繞組的電氣絕緣強(qiáng)度