合金元素与铁、碳的相互作用
合金元素加入钢中后，主要以三种形式存在钢中。即：与铁形成固溶体；与碳形成碳化物；在高合金钢中还可能形成金属间化合物。
The interaction of alloying elements with iron and carbon
When alloy elements are added to steel，工字钢厂， they mainly exist in three forms. Namely: to form a solid solution with iron; carbide and carbon; in high alloy steels are also likely to form intermetallic compounds.
厚钢板的钢种大体上和薄钢板相同。在品各方面，除了桥梁钢板、锅炉钢板、汽车制造钢板、压力容器钢板和多层高压容器钢板等品种纯属厚板外，有些品种的钢板如汽车大梁钢板（厚2.5~10毫米）
The steel of a thick steel plate is roughly the same as that of a thin steel plate. In all aspects，工字钢安装， in addition to bridge steel plate， boiler steel plate， automobile made steel plate，工字钢， pressure vessel steel plate and multilayer high pressure vessel steel plate， some varieties of steel plate such as car beam steel plate (2.5~10 mm thick)
工字型钢不论是普通型还是轻型的，由于截面尺寸均相对较高、较窄，故对截面两个主袖的惯性矩相差较大，因此，工字钢生产商，一般仅能直接用于在其腹板平面内受弯的构件或将其组成格构式受力构件。
I-steel whether ordinary or light， because the section size are relatively high and narrow， so the moment of inertia of the main secti of the two sleeve is large， therefore， generally only can be directly used in the web plane bending member or the of lattice stress components.
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