The Advantages of PVD Coating for Cutting Tools
PVD Coating can greatly improve the performance of a cutting tool because of the reasons as below:
✦ The lowered Coefficient of Friction means there is less resistance during the cut; therefore, less heat is generated – heat build-up being another major factor in cutting edge break-down.
✦ The lowered Coefficient of Friction also means the chips generated during the cutting process are evacuated more efficiently; therefore, the heat that is generated does not have as much time to transfer from the chip to the tool – more heat stays in the chip.
✦ The lowered Coefficient of Friction will reduce machining noise and the load placed on spindle motors.
✦ The lack of chemical affinity between various coatings and work pieces will reduce material “pick-up,” another leading cause of cutting edge breakdown. For example, when cutting titanium with a ZrN coated end mill, the titanium has no chemical affinity towards ZrN; therefore, you will experience almost no “pick-up.”.
✦ The lowered Coefficient of Friction creates a free-cutting tool – this may reduce or eliminate burrs and help to improve the surface finish or machined parts
Haohai Metal manufactures sputtering targets and cathodes for the deposition of hard coatings. These special protective coatings increase the wear resistance of cutting tools.
Haohai Metal's materials available for cutting tools hard coatings as rotatable monolithic or rotatable plasma sprayed sputtering targets, planar monolithic or bonded sputtering targets, arc cathodes, evaporation materials and crucibles in materials of:
✦ titanium - Ti, CP Grade 2 (99.2%), CP Grade 1 (99.7%), 99.9%, 99.95%, 99.99%, 99.995%, 99.999%; rotatable target, planar target.
✦ zirconium - Zr, R60702 (99.2%), 99.9%, 99.95%, 99.99%, 99.995%; rotatable target, planar target
✦ chromium - Cr , 99.5%, 99.8%, 99.9%, 99.95%; rotatable target, planar target.
✦ tantalum - Ta, 99.95%; rotatable target, planar target.
✦ titanium-aluminum - TiAl, 99.7%; 25:75, 30:70, 33:67, 40:60, 50:50, 60:40, 67:33, 70:30, 75:25, 80:20, at%; rotatable target, planar target.
✦ nickel-chromium - NiCr, 99.9%, 99.95%, 99.99%; 80:20, 60:40, 50:50, 40:60, wt%; rotatable target, planar target.
✦ chromium-aluminum - AlCr, 99.9%; 70:30, 50:50, at%; rotatable target, planar target.