The medical titanium bars can be forged by using the closed die forging method. The closed die forging must strictly limit the volume of the original blank, which complicates the material preparation process. Whether closed die forging is adopted, both profit and technological feasibility should be considered. Then only heat treatment and machining of the final blank.
The forging temperature and deformation degree are the basic factors that determine the microstructure and properties of the alloy. The heat treatment of titanium rods is different from that of steel, and die forging is usually used to create a shape and size close to the scrap. It does not determine the structure of the alloy. Therefore, the specification of the final working step of titanium rod plays an important role.
It is necessary to make the overall deformation of the blank not less than 30% of the deformation temperature not exceed the phase transition temperature. In order to obtain high strength and plasticity of the titanium rod at the same time, the temperature and deformation degree should be evenly distributed in the entire deformation of the blank as far as possible.
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