What impact does hot rolling technology have on aluminum alloys?

1、 Changes in organization and performance

Grain refinement: During the hot rolling process, the grains of aluminum alloy are elongated and flattened, and crystal defects are reduced, oriented along the direction of the slip layer. This helps to improve the strength, toughness, and ductility of aluminum alloys.

Performance improvement: Hot rolling can improve the processing performance of aluminum alloys, such as crushing coarse grains in the cast state, healing microcracks, reducing or eliminating casting defects, transforming the cast structure into a deformed structure, thereby improving the processing and mechanical properties of aluminum alloys.

Balance between strength and plasticity: The hot-rolled aluminum alloy plate and strip exhibit a microstructure state where recrystallization and deformation coexist. This organizational state balances the strength and plasticity indicators of aluminum alloys within a certain range. However, due to the inability of hot rolling to precisely control the required mechanical properties of the product, the microstructure and properties of hot-rolled products may not be uniform enough.

2、 The impact of energy consumption and cost

Significant reduction in energy consumption: During hot rolling, the metal has high plasticity and low deformation resistance, greatly reducing the energy consumption of metal deformation and thus lowering production costs.

Improving production efficiency: Hot rolling usually uses large ingots and large reduction rolling, which not only improves production efficiency, but also creates conditions for the continuous and automated rolling process.

The influence of deformation: The deformation during hot rolling can also affect the properties of aluminum alloys. A larger amount of deformation can promote tissue refinement and grain boundary clarification, thereby improving strength and toughness; However, smaller deformation may lead to increased brittleness of aluminum alloys.

In summary, the impact of hot rolling technology on aluminum alloys is multifaceted, including changes in microstructure and properties, effects on energy consumption and cost, improvements in product quality, and other factors such as hot rolling temperature and deformation. In actual production, it is necessary to select appropriate hot rolling process parameters and conditions based on specific aluminum alloy types, product requirements, and production conditions.