Why do we think that titanium alloy is a difficult treatment material? Due to the lack of in -depth understanding of its treatment mechanism and its phenomenon.
1 and 1 physical phenomenon of titanium treatment
The cutting force of the titanium alloy during treatment is only slightly higher than steel with the same hardness.
Most titanium alloys have low thermal guidance, only 1/7 of steel and 1/16 of aluminum. Consequently, the heat generated during the cutting process of titanium alloys will not be transmitted quickly to the room or is removed by dandruff, and the temperature generates in the cutting zone is as high as 1,000 ° C, so That the blade mouth of the tool is quickly worn, cracks, cracks and cracks and cracks and cracks and cracks.
The high temperature generated during the cutting process has also destroyed the surface integrity of the titanium alloy parts, which caused the phenomenon of treatment for the hardening of parts of geometric precision and a severe reduction in its intensity of fatigue.
The elasticity of the titanium alloy can be beneficial for the performance of the parts, but during the cutting process, the elastic deformation of the parts is an important cause of vibration. The cutting pressure means that the “elastic” part leaves the tool and the rebound, so that the friction phenomenon between the tool and the part is higher than the cutting effect. The friction process will also cause heat, which increases the problem of poor thermal conductivity of titanium alloy.
When processing easy -to -slim or ringing deformation parts, this problem is even more serious. Because when the room material is pushed by the tool, the local deformation of the thin wall has exceeded the elastic range and plastic deformation, and the resistance and hardness of the cutting point material increases considerably. Currently, the treatment speed of the original determined cutting speed becomes too high, which still leads to the net wear of the tool.
“Heat” is the “guilty” of the Titanium alloy difficulty!
2. The know-how of the transformation of the titanium alloy
Based on the understanding of the Titanium alloy treatment mechanism, coupled with previous experience, the main process advice for the treatment of titanium alloy are: as follows:
(1) A blade with a geometric shape with a positive angle to reduce the cutting force, the cutting heat and the deformation of the parts.
(2) Maintain a constant diet to avoid hardening of the part.
(3) The use of high pressure and high -listening cutting fluids to ensure thermal stability of the processing process and prevent the room surface degeneration due to excessive temperature and damage to the tool.
(4) Suddenly keep the blade blade.
(5) Mas in the sweetest state of the titanium alloy as much as possible, because the material becomes more difficult to treat after hardening, thermal treatment increases the resistance of the material and increases the wear of the blade.
(6) Use a large knife cut -off arc or chamfer to cut and try to cut more blades as much as possible. This can reduce the cutting force and the heat of each point and prevent local damage. When crushing titanium alloys, cutting speed in each cutting parameter has the largest effect on the life of the knife.
3. Start with the blade to solve the problem of titanium treatment
The blade grooves that appear during the treatment of titanium alloys are local wear on the depth of the cutting depth at the back and at the front. Chemical reactions and the dissemination of the treatment temperature of tools and parts in the processing temperature exceed 800 ° C, which is also one of the reasons for groove wear. Because during the processing process, the titanium molecules of the part gathered at the front of the blade, and “welded” with the high pressure and high temperature blade to form a chip tumor. When the dandruff tumor is eliminated from the blade, the harsh alloy coating is removed.
4. The structure of tools adapted to the treatment of titanium
Treatment of titanium alloy is heat. There are unique structures for the milling of cutting cutters specifically for the treatment of titanium alloys.
Titanium Alloy Processing Machine Tool Telephone: 15910974236
Daguang focuses on providing solutions such as precision CNC machining services (3-axis, 4-axis, 5-axis machining), CNC milling, 3D printing and rapid prototyping services.
