国产在线一区二区观看_无码毛片AAA视频_2021最新手机在线观看视频_中文字幕日韩高清_免费在线看黄网站_亚洲免费国产精品电影_欧美国产精品天堂_国产女女色色视频网站_好妈妈1免费观看中字直播_日韩成人无码电影观看

解讀不銹鋼方管到底升不生銹？怎么預(yù)防

發(fā)布時間：2019/4/26 15:11:44   來源：無錫蘇匯特鋼有限公司

大多數(shù)人認(rèn)為不銹鋼是絕對不會生銹的，而生銹的就不是不銹鋼了。其實(shí)，一些含鎳低的不銹鋼材質(zhì)在一定的條件下也會生銹的。不銹鋼方管具有抵抗大氣氧化的能力，同時也具有在含酸、堿、鹽的介質(zhì)中耐腐蝕的能力。但其抗腐蝕能力的大小是隨其鋼質(zhì)本身化學(xué)組成、加互狀態(tài)、使用條件及環(huán)境介質(zhì)類型而改變的。因此，不是任何一種不銹鋼，在任何環(huán)境下都能耐腐蝕不生銹。Most people think that stainless steel will never rust, but stainless steel will not rust. In fact, some stainless steel materials with low nickel content will rust under certain conditions. Stainless steel square tube has the ability to resist atmospheric oxidation, but also has the ability to resist corrosion in medium containing acid, alkali and salt. However, the corrosion resistance of the steel varies with its chemical composition, additive state, service conditions and the type of environmental medium. Therefore, not any stainless steel, in any environment can resist corrosion and rust.方管Square tube不銹鋼是靠其表面形成的一層極薄而堅固細(xì)密的穩(wěn)定的富鉻氧化膜來防止氧原子滲入氧化，而獲得抗銹蝕的能力。該薄膜如果遭到破壞，不銹鋼方管就會失去抗銹能力。日常中多見的破壞方式有如下四種：Stainless steel is formed by a very thin, solid, compact and stable chromium-rich oxide film on its surface to prevent oxygen atoms from penetrating into oxidation, and to obtain the ability to resist corrosion. If the film is destroyed, the stainless steel square pipe will lose its rust resistance. There are four common ways of destruction in daily life:（一）不銹鋼方管表面粘附有機(jī)物汁液，在有水氧情況下，構(gòu)成有機(jī)酸，長時間則有機(jī)酸對金屬表面的腐蝕。(1) The surface of stainless steel square tubes is adhered with organic juice, which forms organic acids in the presence of water and oxygen, and corrodes the metal surface for a long time.（二）在有污染的空氣中，遇冷凝水，形成硫酸、硝酸、醋酸液點(diǎn)，引起化學(xué)腐蝕。(2) In polluted air, when it encounters condensate water, it forms sulfuric acid, nitric acid and acetic acid liquid points, which cause chemical corrosion.（三）不銹鋼方管表面存積著含有其他金屬元素的粉塵或異類金屬顆粒的附著物，在潮濕的空氣中，附著物與不銹鋼間的冷凝水，將二者連成一個微電池，引發(fā)了電化學(xué)反應(yīng)，保護(hù)膜受到破壞，稱之謂電化學(xué)腐蝕。(3) The surface of stainless steel square tubes contains dust containing other metal elements or adhesives of different metal particles. In humid air, the adhesives and the condensate water between the adhesives and stainless steel connect the two into a micro-battery, which causes electrochemical reaction and damages the protective film. It is called electrochemical corrosion.（四）不銹鋼方管表面粘附含有酸、堿、鹽類物質(zhì)，引起局部腐蝕。(4) The adherence of stainless steel square tubes to the surface contains acids, alkalis and salts, which causes local corrosion.

標(biāo)簽：方管

相關(guān)資訊