329 347 444 Stainless Steel

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of 329 347 444 stainless steel in China. With abundant experience, we warmly welcome you to wholesale customized 329 347 444 stainless steel from our factory. For price consultation, contact us.

Cold rolling: It is processed and rolled on the basis of hot-rolled stainless steel plates and coils. Generally speaking, it is a process of hot rolling → pickling → cold rolling. Although the steel plate will heat up due to rolling during the processing, it is still called cold rolling. Since hot rolling undergoes continuous cold deformation, cold rolling has poor mechanical properties and too high hardness. It must be annealed to restore its mechanical properties. Those without annealing are called hard rolled coils. Hard rolled coils are generally used to make products that do not require bending and can be easily stretched.

Its characteristics:
1. Due to a certain degree of work hardening, cold-rolled steel plates have low toughness and are more expensive;

2. There is no oxide scale on the cold rolled surface and the quality is good;

3. Products made by cold deformation have high dimensional accuracy and good surface quality;

4. Cold rolling is widely used in various industries due to its production process, such as various cold stamping parts, cold rolled and cold extruded profiles, cold rolled springs, cold drawn wire rods, cold heading bolts, etc.

Hot rolling: relative to cold rolling, cold rolling is rolling performed below the recrystallization temperature, while hot rolling is rolling performed above the recrystallization temperature.

Its characteristics:
1. Poor toughness and surface smoothness, low price;

2. The temperature of hot rolling is similar to that of forging;

3. The hot plate is hot-rolled and has oxide scale on the surface, and the plate thickness varies;

4. Due to its production and manufacturing technology, it is widely used in civilian applications, such as tableware, kitchen utensils, general household appliances, etc.;

5. The mechanical properties of hot-rolled steel plates are far inferior to those of cold processing and inferior to forging processing, but they have better toughness and ductility.

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