What are the advantages and disadvantages of titanium alloy hot rolling?
2025,07,24
1. Advantages of hot rolling
(1) Hot rolling can significantly reduce energy consumption and reduce costs. Generally, as the temperature increases, the deformation resistance of metal decreases. Therefore, the deformation resistance of metal during hot rolling is lower than that during cold working, which can significantly reduce the energy consumption during rolling. Therefore, all metals that can be hot-rolled should be hot-rolled.
(2) Hot rolling can improve the processing performance of metals and alloys. Because hot rolling can break the coarse grains in the casting state, heal microcracks, and reduce or eliminate casting defects.
Therefore, hot rolling can transform the cast structure with low plasticity into the deformed structure (processed structure) with higher plasticity and improve the processing performance of the metal.
(3) Hot rolling can use large reduction rolling. Within a certain temperature range, as the temperature increases, the plasticity of the metal increases, so that a larger amount of deformation can be used for rolling, and at the same time, the crack defects of the metal can be reduced, and the yield rate of the metal can be improved.
(4) Hot rolling can be applied to large ingot rolling. Since the metal has high plasticity and low deformation resistance during hot rolling, larger ingots can be used. It can not only improve productivity, yield and rolling speed, but also create conditions for the continuity and automation of the rolling process.
2. Disadvantages of hot rolling
1) It is difficult to accurately control the mechanical properties of hot-rolled products. The structure and properties of hot-rolled products are not uniform enough. The strength of hot-rolled products is low and the performance fluctuation range is large.
(2) The size of hot-rolled products is difficult to accurately control, and the surface is rougher than cold-rolled products. Since it is easy to oxidize at high temperatures, the surface quality is not high. Therefore, in the production of non-ferrous metal plates and strips, hot rolling rarely directly produces finished products, and most of them provide bad materials for cold rolling.
