Titanium alloys have the advantages of high strength, low density, good mechanical properties, toughness, and corrosion resistance. However, titanium alloys have poor processability, difficult cutting, and are prone to absorbing impurities such as hydrogen, oxygen, nitrogen, and carbon, resulting in a decrease in finished product performance. In severe cases, the workpiece may be directly scrapped. Some common problems and precautions in titanium alloy cutting:
(1) Due to the small elastic modulus of titanium alloy, the clamping deformation and stress deformation of the workpiece during processing are large, which will reduce the machining accuracy of the workpiece; The clamping force during workpiece installation should not be too large, and auxiliary support can be added if necessary.
(2) If hydrogen containing cutting oil is used, it will decompose and release hydrogen gas at high temperatures during the cutting process, which will be absorbed by titanium and cause hydrogen embrittlement; It may also cause high-temperature stress corrosion cracking of titanium alloys.
(3) Some cutting oils mainly composed of chlorine based additives may decompose or volatilize toxic gases during use, and safety precautions should be taken when using them; After cutting, the parts should be thoroughly cleaned with cleaning agents in a timely manner to remove chlorine containing residues.
(4) It is prohibited to use tools and fixtures made of lead or zinc based alloys in contact with titanium alloys, and the use of copper, tin, cadmium, and their alloys is also prohibited.
(5) All tools, fixtures, or other devices in contact with titanium alloys must be clean, and cleaned titanium alloy parts must be protected from grease or fingerprint contamination, otherwise it may cause salt stress corrosion in the future.
(6) In general, there is no risk of ignition when cutting titanium alloys, only the small chips cut during micro cutting exhibit ignition and combustion phenomena. In order to avoid fires, in addition to pouring a large amount of cutting oil for cooling, it is also necessary to prevent chips from accumulating on the machine tool. After the tool is blunt, it should be replaced immediately or the cutting speed should be reduced, and the feed rate should be increased to increase the chip thickness.
The above are common problems and precautions in titanium alloy cutting technology. Choosing titanium alloy specific cutting oil during titanium alloy cutting technology can greatly improve efficiency.
Company: Baoji Dynamic Trading Co., Ltd
Country:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel/Whatsapp :+86 18309262795
Email:annie@jmyunti.com
Website:www.jm-titanium.com
