【长迎资讯】不锈钢有关知识

不锈钢的不锈性和耐蚀性是由於外表上富丁氧化膜（钝化膜）的造成。这种不锈性和耐蚀性是相对的。有实验标明，钢在空气、水等弱介质中和硝 等氧化性介质中，其耐蚀性随钢中丁含水量的减少而进步，当丁含量到达一定的百分比时，钢的耐蚀性产生渐变，即从易生锈到不易生锈，从不耐蚀到耐侵蚀。

   The rust resistance and corrosion resistance of stainless steel are caused by the butyl-rich oxide film (passivation film) on the surface. This rust resistance and corrosion resistance are relative. Experiments have shown that steel is resistant to weak media such as air and water and oxidizing media such as nitrate.

 简单地说，不锈钢就是不容易生锈的钢，理论上一局部不锈钢，既有不锈性，又有耐性（耐蚀性）。不锈钢的不锈性和耐蚀性是由於其外表上富丁氧化膜（钝化膜）的造成。这种不锈性和耐蚀性是根据环境变化的。实验标明，钢在空气、水等弱介质中与硝等氧化性介质中，其耐蚀性随钢中丁含水量的减少而进步，当丁含量到达一定的百分比时，钢的耐蚀性产生渐变，即从易生锈到不易生锈，从不耐蚀到耐侵蚀。不锈钢的分类办法很多。

    Simply put, stainless steel is steel that is not easy to rust. In theory, a part of stainless steel has both rust resistance and  resistance (corrosion resistance). The rust resistance and corrosion resistance of stainless steel are caused by the butyl-rich oxide film (passivation film) on the surface. This rust resistance and corrosion resistance vary according to the environment. The experiment shows that the corrosion resistance of steel in weak media such as air and water and oxidizing media such as nitrate increases with the decrease of the water content in the steel. When the content reaches a certain percentage, the corrosion resistance of steel Produces a gradual change, that is, from easy to rust to not easy to rust, from not resistant to corrosion. There are many ways to classify stainless steel

1．按室温下的金相组织构造：马氏体型钢、奥氏体型不锈钢、铁素体不锈钢、双相不锈钢和积淀软化不锈钢；
2．按主要化学成分：丁不锈钢和丁镍不锈钢两大零碎；
3．按用途则有：耐硝 不锈钢、耐硫 不锈钢、耐海水不锈钢等等；
4．按耐蚀类型：耐点蚀不锈钢、耐应力侵蚀不锈钢、耐晶间侵蚀不锈钢等；
5．按性能特点：无磁不锈钢、易切削不锈钢、高温不锈钢、高强度不锈钢等。

   1. Metallographic structure at room temperature: martensitic steel, austenitic stainless steel, ferritic stainless steel, duplex stainless steel and precipitation hardening stainless steel;

   2. Main chemical composition: two systems of butyl-stainless steel and butyl-nickel stainless steel;

   3. The uses are divided into: nitrate-resistant stainless steel, sulfur-resistant stainless steel, seawater-resistant stainless steel, etc.;

   4. Corrosion resistance type: pitting corrosion resistant stainless steel, stress corrosion resistant stainless steel, intergranular corrosion resistant stainless steel, etc.;

   5. Features: Non-magnetic stainless steel, free-cutting stainless steel, low-temperature stainless steel, high-strength stainless steel, etc.

     由於不锈钢材具备优良的耐蚀性、成型性、相容性以及在很宽温度范畴内的强韧性等系列特点，所以在重工业、轻工业、生存用操行业以及修建装璜等行业中获获得宽泛的利用。

总的说不锈钢的不锈是一种对的性质，不是绝对的是相对于碳钢而言。不锈钢不容易生锈，但不是绝对不生锈，只是在相同条件和环境中，较碳钢而言不容易被腐蚀和生锈。对比普通的铁和镀锌板来说就跟耐用与“不锈”。

     Because stainless steel has excellent corrosion resistance, formability, compatibility, and toughness in a wide range of temperature, it has been widely used in heavy industry, light industry, survival operation industry, and construction and decoration industries. Of use.

      Generally speaking, stainless steel is a right property, not absolute compared to carbon steel. Stainless steel is not easy to rust, but it is not absolutely not rusty, but under the same conditions and environment, it is less likely to be corroded and rusted than carbon steel. Compared with ordinary iron and galvanized sheet, it is more durable andstainless".