當(dāng)不銹鋼表面出現(xiàn)褐色銹斑（點(diǎn)）的時(shí)候，人們大感驚奇：認(rèn)為“不銹鋼不會(huì)生銹的，生銹就不是不銹鋼了，可能是鋼質(zhì)出了問題”。其實(shí)，這是對(duì)不銹鋼缺乏了解的一種片面的錯(cuò)誤看法。不銹鋼在一定條件下也會(huì)生銹的。

When the surface of stainless steel appears brown rust spots (points), people feel surprised: think that "stainless steel will not rust, rust is not stainless steel, may be the steel quality out of the problem". In fact, this is a lack of understanding of stainless steel a one-sided wrong view. Stainless steel will also rust under certain conditions.

不銹鋼具有抵抗大氣氧化的能力一即不銹性，同時(shí)也具有在含酸、堿、鹽的介質(zhì)中耐腐蝕的能力即耐腐蝕性。但其抗腐蝕能力的大小是隨其鋼質(zhì)本身化學(xué)組成，相互狀態(tài)，使用條件及環(huán)境介質(zhì)類型而改變的。如304材料，在干燥清潔的大氣中，有絕對(duì)優(yōu)良的抗腐蝕能力，但將它移到海濱地區(qū)，在含有大量鹽分的海霧中，很快就會(huì)生銹的。因此，不是任何一種不銹鋼，在任何時(shí)候都能耐腐蝕，不生銹的。

Stainless steel has the ability to resist atmospheric oxidation is rust, but also has the ability of corrosion resistance in the medium containing acid, alkali, salt is corrosion resistance. However, the size of its corrosion resistance is changed with the chemical composition of the steel itself, the mutual state, the use conditions and the type of environmental medium. Such as 304 material, in the dry and clean atmosphere, has absolutely excellent corrosion resistance, but move it to the coastal area, in containing a lot of salt sea fog, will soon rust. Therefore, not any kind of stainless steel, at any time can be corrosion resistance, no rust.

不銹鋼是靠其表面形成的一層極薄而又堅(jiān)固細(xì)密的穩(wěn)定的富鉻氧化膜（防護(hù)膜），防止氧原子繼續(xù)滲入、繼續(xù)氧化，而獲得抗腐蝕的能力。一但有某種原因，這種薄膜遭到不斷的破壞，空氣或液體中和氧原子就會(huì)不斷滲入或金屬中鐵原子不斷地析離出來(lái)，形成疏松的氧化鐵，金屬表面也就受到不斷的銹蝕。這種表面膜受到破壞的形式很多，日常生活中多見的有如下幾種：

Stainless steel is a very thin and solid stable chromium rich oxide film (protective film) formed by its surface, to prevent oxygen atoms continue to penetrate, continue to oxidation, and obtain the ability to resist corrosion resistance. Once there is some reason, the film is constantly damaged, the air or liquid and oxygen atoms will continue to penetrate or the metal iron atoms constantly precipitate out, forming loose iron oxide, the metal surface is constantly corroded. There are many forms of damage to this surface mask, and there are many things as follows in daily life:

1）不銹鋼表面存積蓄含有其它金屬元素的粉塵或異類金屬顆料的附著物，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(gè)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。

1) The surface of stainless steel contains dust containing other metal elements or heterogeneous metal material attachments, in the wet In the air, the condensate between the attachment and the stainless steel connects the two into a microbattery, causing an electrochemical reaction Should, the protective film is damaged, called the electrochemical corrosion.

2）不銹鋼表面粘附著有機(jī)物汁液（如瓜菜、面湯痰等），在有水氧情況下，構(gòu)成有機(jī)酸，長(zhǎng)時(shí)間則形成有機(jī)酸對(duì)金屬表面的腐蝕。

2) stainless steel surface attached to organic juice (such as vegetables, noodle soup, etc.), in the case of water and oxygen, composition Organic acids, for a long time, corrode metal surfaces.

3）不銹鋼表面粘附含有酸、堿、鹽類物質(zhì)（如裝修墻壁的堿水、石灰水噴測(cè)）引起局部腐蝕。

3) The adhesion of stainless steel surface contains acid, alkali and salt substances (such as alkali water and lime water spraying measurement) local corrosion.

4）在有污染的空氣中（含有大量的硫化物、氧化物、氧化氫的大氣），遇冷凝水，形成硫酸、硝酸、醋酸液點(diǎn)，引起化學(xué)腐蝕。

4) In the polluted air (the atmosphere containing large amounts of sulfide, oxide, hydrogen oxide), in condensed water, Form sulfuric acid, nitric acid, acetic acid liquid point, cause chemical corrosion.

以上情況均可造成不銹鋼表面防護(hù)膜的破壞、引起腐蝕。所以，為確保金屬表面永久光亮，不被生銹，我們建議：

The above conditions can cause the damage of the stainless steel surface protective film, cause corrosion. Therefore, to ensure that the metal surface is permanently bright and not rusted, we suggest:

①必須經(jīng)常對(duì)裝飾不銹鋼表面進(jìn)行清潔擦洗，去除附著物，消除引發(fā)銹蝕的外界因素。

①The decorative stainless steel surface must be cleaned and scrubbed, remove the attachments, eliminate the external factors that cause corrosion.

②現(xiàn)市場(chǎng)上有一種201及202材質(zhì)的不銹鋼在海濱地區(qū)易生銹，適宜在沒有工業(yè)污染及空氣腐蝕環(huán)境下使用。

②There is a kind of 201 and 202 material of stainless steel on the market in the seaside area is easy to rust, suitable for use in the absence of industrial pollution and air corrosion environment.

③海濱地區(qū)要使用304材質(zhì)不銹鋼，304材質(zhì)能抵抗海水腐蝕。

③The coastal area should use 304 material stainless steel, 304 material can resist seawater corrosion.