The surface treatment methods and processes for titanium square bars are as follows:
Mechanical Processing Techniques
1. Sandblasting: High-speed blasting with 80-250µm Alz0 abrasive particles removes the oxide layer and increases surface roughness, improving coating adhesion. The pressure is typically 65MPa, the distance is 10mm, and the time is 2 minutes.
2. Brushing and Polishing
Brushing: Creates a silky texture, enhancing the overall feel. Mirror Polishing: Achieves high gloss through soft band polishing or electrolytic polishing, but mirror polishing of titanium is quite difficult.
Chemical and Electrochemical Treatments
1. Pickling: Removes surface oxides through acid reaction; low cost and suitable for complex shapes.
2. Anodizing: Electrolysis generates a colored oxide film, combining aesthetics and wear resistance.
III. High Temperature and Special Processes
1. Micro-arc Oxidation: Generates a ceramic coating on the surface, offering excellent corrosion resistance, suitable for marine environments.
2. Crystallization Treatment: Forms an ice-flower-like texture at high temperatures, also providing fingerprint resistance.
IV. Decorative treatment:
Chemical etching: Creates relief patterns or designs.
Atmospheric oxidation: Heating produces interference colors, but the color uniformity is poor.
The main technical challenges in machining titanium square bars include:
**Work hardening:** Titanium has relatively poor machinability, making it prone to work hardening and cracking. The solution is to select appropriate cutting tools, cutting parameters, and cooling methods.
**Heat treatment control:** Titanium requires high heat treatment temperatures, which easily lead to grain growth and oxidation. Strict control of heating rate, holding time, and cooling rate is necessary.
**Difficult surface treatment:** Surface treatment of titanium is relatively difficult, easily resulting in oxidation and contamination. Appropriate treatment methods and process parameters must be selected.
**Poor weldability:** Titanium has poor weldability, easily leading to cracks and porosity during welding. Appropriate welding methods and process parameters must be selected.
Through the above process flow and technical control, titanium square bar products meeting various application requirements can be produced. With continuous advancements in machining technology, the production efficiency and quality of titanium square bars will be further improved.
Baoji Reliab Metal Materials Co.,Ltd
Mobile: 0086 13092900605
Sales Department 1: WhatsApp +8613092900605 (Mr.Gary)
Sales Department 2: +8613092913521(Ms. Sophia)
Address: No.35 Baoti Rd, Weibin District, Baoji, China
