Will the hardness of cold-rolled coil become higher when the weather gets cold?

When the weather gets cold, the hardness of cold-rolled coil will become higher.

It is rolling under recrystallization, but it is generally understood as rolling with materials rolled at room temperature. Cold rolling of aluminum can be divided into plate rolling and foil rolling. The plate with a thickness above 0. 15~ and the foil with a thickness below 0. 15~ are called plates. 3~6 tandem mills are often used as cold rolling equipment in Europe and America.

The change of steel grade caused by cold rolling belongs to continuous cold deformation, and the cold working hardening caused by this process increases the strength and hardness of rolled hard coil, and decreases the toughness and plasticity index. For the final use, cold rolling will reduce the stamping performance.

Basic information

It is widely used, such as automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, canned food and so on. ? Cold-rolled steel plate is the abbreviation of common carbon structural steel cold-rolled sheet, also known as cold-rolled sheet, commonly known as cold plate, sometimes mistakenly written as cold-rolled sheet. The cold plate is a steel plate with a thickness of less than 4mm, which is made of common carbon structural steel hot rolled steel strip by further cold rolling.

Because the normal temperature rolling does not produce scale, the surface quality of the cold plate is good and the dimensional accuracy is high. In addition, its mechanical properties and technological properties are better than hot-rolled steel plates, and it has been gradually used to replace hot-rolled steel plates in many fields, especially in the field of household appliances manufacturing.