Fine-controlled rolling process, casting excellent performance of copper
2026 Apr 27
In the field of copper-based materials manufacturing, the microstructure of products determines their macro-properties. Jiangxi Jinpin Copper Co., Ltd. knows this well. Through the exquisite control of hot rolling and cold rolling, the two core plastic processing technologies, Jiangxi Jinpin Copper Co., Ltd. has endowed excellent quality genes for high-precision copper plate and strip products and laid its technical cornerstone in the market competition.
Process cornerstone: the essential difference between hot rolling and cold rolling
Hot rolling and cold rolling are two rolling technologies based on the recrystallization temperature of materials, and their fundamental differences determine the characteristics and application direction of products.
Hot Rolling: Shaping Strength and Efficiency
Hot rolling is a thermoplastic working process above the recrystallization temperature of metal materials. In this state, the metal has good plasticity and small deformation resistance, so it can be rolled with a large reduction, and the production efficiency is high, which is suitable for the preparation of ingot cogging and tundish. However, in the hot rolling process, the metal surface is easy to produce scale, and the dimensional accuracy and surface smoothness of the product are relatively low. Its core purpose is to quickly change the shape of the material, break the as-cast structure and form a preliminary processing structure.
Cold rolling: sublimation of precision and performance
Cold rolling is cold plastic working below the recrystallization temperature of metal. This process will lead to a significant work hardening effect, leading to an increase in the strength, hardness and toughness of metals, while a decrease in plasticity and toughness. Cold-rolled products have extremely high dimensional accuracy, excellent surface quality and uniform structure. In order to obtain the required properties, it is usually necessary to cooperate with intermediate annealing or finished annealing after cold rolling to eliminate stress and adjust grain structure. Its core value lies in improving the mechanical properties, dimensional accuracy and surface quality of products.
In short, hot rolling focuses on forming, while cold rolling focuses on forming and finishing. They are not substitutes, but complementary process chains.
Process cornerstone: the essential difference between hot rolling and cold rolling
Hot rolling and cold rolling are two rolling technologies based on the recrystallization temperature of materials, and their fundamental differences determine the characteristics and application direction of products.
Hot Rolling: Shaping Strength and Efficiency
Hot rolling is a thermoplastic working process above the recrystallization temperature of metal materials. In this state, the metal has good plasticity and small deformation resistance, so it can be rolled with a large reduction, and the production efficiency is high, which is suitable for the preparation of ingot cogging and tundish. However, in the hot rolling process, the metal surface is easy to produce scale, and the dimensional accuracy and surface smoothness of the product are relatively low. Its core purpose is to quickly change the shape of the material, break the as-cast structure and form a preliminary processing structure.
Cold rolling: sublimation of precision and performance
Cold rolling is cold plastic working below the recrystallization temperature of metal. This process will lead to a significant work hardening effect, leading to an increase in the strength, hardness and toughness of metals, while a decrease in plasticity and toughness. Cold-rolled products have extremely high dimensional accuracy, excellent surface quality and uniform structure. In order to obtain the required properties, it is usually necessary to cooperate with intermediate annealing or finished annealing after cold rolling to eliminate stress and adjust grain structure. Its core value lies in improving the mechanical properties, dimensional accuracy and surface quality of products.
In short, hot rolling focuses on forming, while cold rolling focuses on forming and finishing. They are not substitutes, but complementary process chains.
