As an important metal material, titanium plate has a wide range of applications in various fields. This article will provide a detailed overview of the titanium plate production process, including hot rolling, cold rolling, and subsequent finishing.
1. Hot-Rolled Titanium Plate Production Process
Hot-rolled titanium plate is primarily made from continuous casting slabs or rough rolled slabs. These slabs are heated in a walking beam furnace and then descaled using a high-pressure water descaling unit. The raw material then enters the roughing mill for preliminary rolling. The head and tail of the roughing mill are trimmed, and the plate then enters the finishing mill for computer-controlled rolling. After final rolling, the titanium plate is cooled in a laminar flow cooling unit and coiled into straight coils by a coiler.
The head and tail of straight coils often exhibit tongue-like or fishtail-like shapes, with relatively poor thickness and width accuracy. Edge defects such as wavy, folded, and pyramidal shapes are common. Furthermore, straight coils are heavier, and the inner diameter of titanium tubes is typically 760mm, making them suitable for use in the tube manufacturing industry. To achieve higher quality, hot-rolled titanium plate requires straight coils to undergo multiple finishing processes, including head and tail trimming, trimming, and straightening and flattening. The resulting titanium plate can then be cut or re-coiled to produce products such as hot-rolled titanium plate, flat hot-rolled titanium tube, and slit strip. If the hot-rolled finished coil is pickled to remove scale and oiled, it becomes hot-rolled pickled coil.
II. Cold-Rolled Titanium Plate Production Process
Cold-rolled titanium plate is made from hot-rolled titanium tubes. After pickling to remove scale, it undergoes continuous cold rolling. The resulting product is hardened coil. Due to the cold work hardening caused by continuous cold deformation, the strength and hardness of hardened coil increase, while the toughness and ductility decrease. This degrades its stamping performance and makes it suitable only for parts requiring simple deformation.
Hardened coil can serve as feedstock for hot-dip galvanizing plants, which typically include annealing lines. The coil weight of cold-rolled titanium plate typically ranges from 6 to 13.5 tons, and the inner diameter of the titanium tube is 610 mm. To improve the performance of cold-rolled titanium plates, they typically undergo continuous annealing (CAPL) or bell-type annealing to eliminate cold work hardening and rolling stresses, achieving the mechanical properties specified in the relevant specifications.
Cold-rolled titanium plates offer superior surface quality, appearance, and dimensional accuracy compared to hot-rolled plates, and can be rolled to a thickness of approximately 0.18mm, making them highly sought after by users. Further processing using cold-rolled titanium tubes as substrates can produce high-value-added products such as electrogalvanized, hot-dip galvanized, fingerprint-resistant electrogalvanized, color-coated titanium coils, vibration-damping composite titanium plates, and PVC-coated titanium plates. These products, characterized by their aesthetic appeal and high corrosion resistance, are widely used.
III. Finishing Treatments
After annealing, cold-rolled titanium tubes undergo finishing treatments, including head and tail trimming, edge trimming, leveling, flattening, recoiling, or slitting. These treatments further enhance the dimensional accuracy and surface quality of the titanium plates, meeting the diverse needs of users. IV. Applications
Hot-rolled and cold-rolled titanium plates are widely used in industries such as automotive manufacturing, home appliances, instrumentation and switches, construction, and office furniture. Bundled titanium plates weigh 3 to 5 tons per package, while flat coils typically weigh 3 to 10 tons per coil.
In summary, the titanium plate production process includes multiple steps, including hot rolling, cold rolling, and subsequent finishing. Each step has its own specific process requirements and quality control standards to ensure that the final product's quality and performance meet user requirements.
The company boasts leading domestic titanium processing production lines, including:
German-imported precision titanium tube production line (annual production capacity: 30,000 tons);
Japanese-technology titanium foil rolling line (thinnest to 6μm);
Fully automated titanium rod continuous extrusion line;
Intelligent titanium plate and strip finishing mill;
The MES system enables digital control and management of the entire production process, achieving product dimensional accuracy of ±0.01μm.
