What Are the Processing Technologies for Titanium

What Are the Processing Technologies for Titanium Rods?

1. Hot Forging

• Principle: Hot forging is a forging process carried out above the metal's recrystallization temperature. For the processing of titanium rods, the titanium billet is heated to an appropriate high temperature to make its internal structure uniform and have good plasticity. Then, external forces are applied by pressure equipment (such as forging hammers or presses) to cause plastic deformation of the billet, thus obtaining the rough product of the titanium rod with the required shape and size.

• Function: Through hot forging, the original coarse-grained structure of the titanium material can be effectively broken, the grains can be refined, and the mechanical properties of the titanium rod, such as strength and toughness, can be improved. Meanwhile, hot forging can improve the internal structure of the titanium rod, making it denser and reducing internal defects.

2. Hot Rolling

• Principle: Hot rolling is a rolling process carried out above the recrystallization temperature of titanium. The heated titanium billet passes through a set of rotating rolls. The gap between the rolls gradually decreases, and the billet continuously deforms under the pressure of the rolls, with its thickness continuously decreasing until the titanium rod is finally formed.

• Function: Hot rolling can significantly reduce the cross-sectional area of the titanium rod. During the processing, due to the relatively high temperature, the titanium material has good plasticity, which can effectively improve the shape accuracy and size accuracy of the titanium rod. Meanwhile, hot rolling can also make the structure of the titanium rod more uniform, which is beneficial to improving its comprehensive performance.

3. Annealing

• Principle: The titanium rod is slowly heated to a certain temperature, kept for a sufficient period of time, and then cooled at an appropriate speed (usually slow cooling, sometimes controlled cooling). During the hot working processes (such as hot forging and hot rolling) of the titanium rod, internal stresses will be generated. Annealing enables titanium atoms to rearrange themselves and eliminate the internal stresses generated during these processing processes.

• Function: It can improve the mechanical properties of the titanium rod, such as reducing hardness and increasing
toughness. It can also stabilize the size of the titanium rod and prevent deformation during subsequent processing or use. In addition, for some titanium alloy rods, annealing is an important means to adjust their structure and performance.

4. Turning (Grinding)

• Principle: Turning is a cutting process carried out on the surface of the titanium rod using cutting tools on a lathe to make the surface of the titanium rod achieve a relatively high degree of smoothness and straightness. Grinding uses grinding tools (such as grinding wheels) to grind the surface of the titanium rod to further improve the surface quality.

• Function: Through turning (grinding), defects such as oxide scale and machining marks on the surface of the titanium rod can be removed, and a titanium rod with high precision and high surface quality can be obtained to meet the requirements for the surface quality of titanium rods in different application scenarios, for example, in fields with high precision requirements such as aerospace and medical fields.

5. Polishing

• Principle: Tools and materials such as polishing wheels and polishing pastes are used to conduct fine grinding and polishing treatment on the surface of the titanium rod. Through the friction between the polishing particles and the surface of the titanium rod, the surface becomes smoother and brighter.

• Function: On the basis of ensuring the size accuracy of the titanium rod, the surface smoothness can be further improved to give it good appearance quality. Meanwhile, it can also improve its corrosion resistance to a certain extent. It is often used for titanium rods with extremely high requirements for surface quality, such as decorative or precision instrument titanium rods.

6. Squaring

• Principle: Cutting equipment (such as sawing machines or special cutting tools) is used to cut the two ends of the titanium rod flat to make its length meet the requirements and ensure the flatness and perpendicularity of the two end faces.

• Function: It ensures the shape and size accuracy of the two ends of the titanium rod, which is convenient for subsequent assembly, processing, or use. For example, when used in mechanical connection or as shaft parts, good squaring quality is the key to ensuring installation accuracy.