Cómo establecer una distinción entre el acero laminado en caliente y acero laminado en frío?

En la industria del acero, el acero laminado en caliente y el acero laminado en frío se consideran las dos principales materias primas comunes. En la compra real, a menudo podemos encontrar que los clientes preguntan a los fabrica de tubos de acero las diferencias entre el acero laminado en caliente y el acero laminado en frío.
Hay algunas diferencias fundamentales entre estos dos tipos de metal. Estas diferencias se relacionan con las formas en que se procesan estos metales en la fábrica, pero no con la especificación o grado del producto.
En general, la tubos de metal se fabrica mediante bobinas laminadas en caliente o bobinas laminadas en frío en la fábrica. Obviamente, es importante para usted saber más información sobre estos dos tipos diferentes de material en la vida.

1) hot rolled steel
Hot rolling is a process that involves rolling the steel at a high temperature (typically at a temperature over 1700 ° F), which is above the steel’s recrystallization temperature. When steel is above the recrystallization temperature, it can be shaped and easily formed, and the steel can be made in much larger sizes. Hot rolled steel is typically cheaper compared to cold rolled steel, because it is often manufactured without any delays in the process, and therefore the reheating of the steel is not required (as is with cold rolled). When the steel cools off it will shrink slightly, giving less control on the size and shape of the finished product when compared to cold rolled.
2) cold rolled steel
Cold rolled steel is based on the hot rolled steel that has had further processing. The steel is further processed at temperatures that are close to the level of normal room temperature, where the material is cooled (at room temperature) followed by annealing and / or tempers rolling. This process will produce steel with closer dimensional tolerances and a wider range of surface finishes. The term Cold Rolled is used to refer to the flat rolled sheet or the coil products. Cold rolled steel pipe is a very common type of pipe in the steel market. This type of pipe has been widely used in a variety of applications in life and production activities today.
As a rule, a finished product after the cold rolled processing tends to be much needed dimensionally compared with a hot rolled product. As a result, the steel pipe price is relatively high in comparison with hot rolled one in the steel market.