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不銹鋼磁力泵的耐腐蝕基材:304不銹鋼
時間:2021-11-16 13:52:11

  304不銹鋼是奧氏體不銹鋼中的一種,耐腐蝕性能優良、加工性能良好、韌性高、耐溫800℃的特點,在不銹鋼離心泵不銹鋼磁力泵的制造中,是一種主要材料。

 

  304不銹鋼主要由C、Mn、P、S、Si、Cr、Ni和Fe幾種元素構成,其中Ni、Cr,是重要兩種元素,但是又僅限于這兩個元素。主要根據行業標準規定。行業中常見的判定依據認為,只要Ni含量大于8%,Cr含量大于18%,就可以認定為是304不銹鋼了。

 

 

  304是一種通用性強的奧氏體不銹鋼,用來制造各種工業的離心泵、磁力泵和機床等。這些采用304制造的機械如果出現腐蝕現象,可能的有以下原因:

 

  1、氯離子腐蝕:比如食鹽、海水、汗漬、海風、土壤等等。

 

  2、固溶處理:以上介紹的幾種元素沒有融入基體,導致基體組織缺乏抗腐蝕性能。

 

  3、晶間腐蝕:即局部腐蝕的一種,沿著金屬晶體粒子間的分界面向內部擴展的腐蝕。例如常見的焊接部位、焊縫部位、熔合線等。另外在做熱處理的時候不當也會發生晶間腐蝕。

 

 

  騰龍在制造不銹鋼離心泵鑄件及焊接不銹鋼磁力泵隔離套的時候均會做探傷檢測,和壓力檢測,防止在現場環境使用中出現腐蝕和滴漏現象。

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