Titanium Rod Production Process And Quality Control Key Points

The production of titanium rods requires multiple processes such as sponge titanium smelting, forging, hot rolling/cold rolling, and heat treatment. Vacuum consumable arc melting (VAR) technology can effectively remove impurities and ensure the purity of the material; thermal deformation in the β phase region (900-950°C) can refine the grains and improve the mechanical properties. Taking aviation-grade TC4 titanium rods as an example, impurity elements such as oxygen content (≤0.20%) and hydrogen content (≤0.015%) must be strictly controlled to avoid the formation of brittle phases. Medical titanium rods must also pass biocompatibility tests such as cytotoxicity and sensitization specified in the ASTM F136 standard. The surface roughness is usually required to be Ra≤0.8μm to reduce tissue friction.