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CVD Diamond Synthesis

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Product Description

Diamond film is synthesized through CVD(Chermical Vapor Deposition) by activating hydrogen and methane gas at high temperature above 2000 with heated cathod.
Unlike PCD, this is composed of 100% diamond crystals. It has indistinguishable characteristics to a natural diamond

Excellent uniformity
     Thinkness deviation less than 10%
     Crystallinity deviation negligible
     Grain size deviation negligible

Excellent properties of wafer
     Pure diamond structure
     Thermal conductivity : Over 10~12W/cmk

Mechanical Intergrity
     Low bow
     Crack-free

Specification

	PCBN	PCD	CVD
Work-pieces	Ferrous metals	Non-ferrous metals	Non-ferrous metals
Roughness	Good	Very good	Coated tools	Good
Roughness	Good	Very good	Thick fllm	Excellent
Manufacturing process	Sintering	Sintering	CVD method
Tool life	Good	Very good	Excellent

Applications

Silicon aluminum alloys
Metal matrix composites(ceramic alminum alloys)
Carbon fber reinforced platice
Tungsten carbide
Platinum
High temperature plasstics
Glass reinforced epoxy

Features and benefits

Harder, more wear resistant
3 to 4x PCD life
Pure diamond, no binders
no chemical interaction or edge erosion
Higher thermal conductivty
lower cutting temperature
reduced spindle power
Maintains sharper edge than PCD
smoother and more consistent finish

Product Graph

400% Increase in toollife using CVD

JUNSAN CVD DIAMOND(JVD) insert tip consists of a cutting edge of pure diamond with no binder. JVD insert can provide a wear life 3 to 4x that of PCD, and maintain edge sharpness longer. Absence of binder avoids chemical interaction with coolant or workpiece material, eliminating premature faliure due to edge erosion. The high thermal conductivity of pure diamond dissipates heat in the cutting zone to maintain lower cutting temperatures. In addition, the reduced cutting force of diamond lessens spindle power.

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