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不銹鋼以其漂亮的外觀、耐腐蝕的特性、不易損壞的優點,深受人們的喜愛

網址:www.singeranamika.com  2020-11-30  作者:admin    閱讀:

不銹鋼以其漂亮的外觀、耐腐蝕的特性、不易損壞的優點,深受人們的喜愛。但是當不銹鋼鑄件表面出現褐色銹斑點的時候,人們會感到驚訝:為什么“不銹鋼”也會生銹?生銹了那還算“不銹鋼”嗎?是不是材質出現了問題?
Stainless steel with its beautiful appearance, corrosion resistance, not easy to damage the advantages of people's love. But when there are brown rust spots on the surface of stainless steel castings, people will be surprised: why does "stainless steel" rust? Rusty, is that still "stainless steel"? Is there something wrong with the material?
其實,這是對不銹鋼一種片面的錯誤看法,因為不銹鋼在一定的條件下也會生銹。
In fact, this is a one-sided wrong view of stainless steel, because stainless steel will rust under certain conditions.
不銹鋼具有抵抗大氣氧化的能力——即不銹性,同時也具有在含酸、堿、鹽的介質中乃腐蝕的能力——即耐蝕性。但其抗腐蝕能力的大小是隨其鋼質本身化學組成、加互狀態、使用條件及環境介質類型而改變的。如304材質的不銹鋼鑄件,在干燥清潔的大氣中,有絕對優良的抗銹蝕能力,但將它移到海濱地區,在含有大量鹽份的海霧中,很快就會生銹了;而316材質則表現良好。因此,不是任何一種不銹鋼,在任何環境下都能耐腐蝕, 不生銹的。
Stainless steel has the ability to resist atmospheric oxidation, that is, it is not rusty, but also has the ability to corrode in the medium containing acid, alkali and salt, that is, corrosion resistance. However, the corrosion resistance of the steel varies with its chemical composition, additive state, service condition and environmental medium type. For example, 304 stainless steel casting has absolutely excellent corrosion resistance in dry and clean atmosphere, but if it is moved to the seaside area, it will rust quickly in the sea fog containing a lot of salt, while 316 material performs well. Therefore, not any kind of stainless steel, in any environment can be resistant to corrosion, rust.

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