・Work material : Ultra fine Tungsten Carbide G5, G6
・Process machine, Micro Precision Process machine (No electrical discharge process).
・Mirror finish by Lap-less.
Bottom surface roughness :Ra0.05μm(same as lapping finish)
Difference to traditional process
1.Largely shorten a process time and 24 hours continuous process.Process time of one piece
Sinker electrical discharge machining + electrode Production + lapping
= 50 minutes
Tokyo Byora process
Direct carving =15 minutes.
2.Achieved a big cost down
Running cost becomes 1/5～1/10 in comparison with traditional process.
3.Realized a quality improvement.
No micro crack nor hardened layer like electrical discharge.
Maximum potential of Tungsten carbide can be utilized.