Surface purification of titanium materials
Titanium is a kind of material with excellent corrosion resistance, which is widely used in aerospace, medical and other fields. However, due to its good corrosion resistance, it is difficult to be etched and cleaned. Therefore, the surface purification of titanium materials is a very important process, which is critical to the performance and performance of titanium materials. This paper introduces the surface purification methods of titanium materials, hoping to bring some help to you.
The surface purification of titanium materials is mainly to remove the oxide film formed on the surface of titanium materials after machining, so that the surface of titanium materials can be restored to the original smooth state. The surface purification methods of titanium materials include chemical etching and polishing.
Chemical etching is the most commonly used method for surface purification of titanium materials. The chemical etching of titanium material is to make use of the difference in etching rate of titanium material and its oxide film, so that the oxide film formed on the surface of titanium material is removed and the surface of titanium material is made bright and smooth. Commonly used methods include oxalic acid etching and nitric acid etching. Oxalic acid etching is a weak acid etching process and is especially suitable for high precision parts with high surface quality requirements. The nitric acid etching process is a strong acid etching process, which can obtain a relatively rough surface compared with oxalic acid etching.
In addition to chemical etching, mechanical polishing is also used as an important method for surface purification of titanium materials. Mechanical polishing is not only used to remove the oxide film on the surface of titanium materials, but also good for imparting hardness to the surface of titanium materials. Commonly used mechanical polishing methods include electrochemical grinding, grinding, lapping and abrasive blast cleaning, etc. Every method of mechanical polishing has its own application fields and requirements.
In summary, the surface purification of titanium materials is a very important technological process for titanium materials. The most commonly used surface purification methods of titanium materials include chemical etching and mechanical polishing. The complexity of the surface process of titanium materials makes the selection of purification technology difficult. Therefore, when selecting purification technology, relevant technical personnel should conscientiously understand the characteristics of each purification technology and select the most reasonable purification technology.
