Matters needing attention in turning, planing and milling of titanium alloy materials
1. What are the precautions for turning titanium alloys?
Turning and boring are not particularly difficult operations under the right cutting conditions. Turning titanium and titanium alloys with high-speed steel or tungsten carbide tools can achieve good cutting performance.
Rough turning is best to use carbide tools, mass production or cutting with a large amount of metal removal, a Carbide tools are generally used. But carbide tools are particularly sensitive to vibration, so rigid fixtures are required. HSS tools are best suited for form cutting, grooving or parting off. For continuous cutting and turning, it is better to use a coolant that is soluble in water. 5% sodium nitrate in water or 5% soluble oil emulsion in water gives good results. Cutting coolant helps to cool the tool and remove turning chips, generally not for dry cutting.
2. What are the precautions for planing titanium alloys?
Planing of titanium and titanium alloys is more difficult than turning, and planing is a half-stroke discontinuous cut.
Machining, high impact, easy to break due to impact and vibration. The best tool material is cemented carbide YG8. When planing pure titanium or softer titanium alloys, high-speed steel tools are also used, the specific choice of which depends on the stiffness of the assembly.
3. What are the precautions for milling of titanium alloy blocks?
In the process of milling, the discontinuous cutting causes the tool to be subjected to shock loads, and the tool only
It is partly in the milling state, and the bonding of titanium and the occlusion of the cutter teeth will occur, and the crystal will eventually lead to the wear or breakage of the cutter.
Turning tools leaving the milled part, the residual turning chips stick tightly to the teeth and are carried to the next
milling process. In order to avoid this phenomenon, rigid fixation and co-rotation milling can be adopted, so that the thin chips generated by milling can be easily removed from the teeth. Generally, spraying with a coolant that is soluble in water will reduce the milling temperature and reduce the bite to a minimum. For small parts with a small amount of milling and some other processes with a small amount of machining, ordinary high-speed steel milling cutters can be used.
For high-speed production processes or operations that remove a large amount of metal, such as face milling and milling of slabs
When tungsten carbide tools are more suitable. When starting a new workpiece, use an appropriate slow milling speed
degrees, and then increase to higher milling speeds.
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