Manufacture of monocrystalline and polycrystalline diamond tools

With monocrystalline and polycrystalline synthetic diamond manufacturing tools, most must rely on metal, ceramic or resin as adhesive carrier, therefore, diamond tool

life and efficiency except with the choice of diamond and bond related, but also depends on the diamond and binding agents

Bonding strength, but between the diamond and the carrier exists on the physical and chemical properties of a huge difference, so that the combination extremely

difficult. To this end, at home and abroad have developed a variety of diamond surface metallization technology, and strive to improve the diamond between the solder

and the metal carcass

Wettability and adhesion strength then to extend the life of the diamond tool.
Chemical gas and liquid processing technology (CVLT), available on the diamond crystal, powder, polycrystalline surface alloying treatment, is currently a new,

advanced diamond metal surface treatment technology.
1 Technical Features
The technology for all types of diamond surface alloying treatment of the various components, the main technical features:
1 Diamond Type: all kinds of diamond single crystal, polycrystalline, powder and CVD diamond films;
(2) surface alloying material: W, Cr, Ti, Ni, Co, Cu, etc., and good connectivity with the resin compound;
3 surface alloy film thickness: according to need up to 0.3 ~ 40μm;
4 a combination of the diamond surface film forms: covalent and metallurgical bonding.
(2) Applications
The technology applications include the following aspects:
1 polycrystalline diamond surface alloying
CVLT technology used in production of polycrystalline diamond surface alloy layer 15 ~ 40μm film, the sintered polycrystalline diamond or can be firmly welded to the

metal carcass. We have successfully used this technique on oil drill and mining tools, metal effect has reached America

State companies like GE metal film polycrystalline diamond level.
(2) single-crystal diamond surface alloying
CVLT technique using the single crystal diamond layer produced on the surface of the alloy film of 1 ~ 5μm, can greatly improve the single-crystal diamond sintered

compact, diamond grinding wheel tool life.
3 diamond powder surface alloying
CVLT technology for diamond powder has two main purposes, one in the diamond powder surface recombination layer of about 0.5μm (Ni, W, Cr) alloy film, this powder can

be used to produce diamond grinding wheel (metal bond and resin bond ) and diamond polishing belt, polishing

Disk, etc., in order to improve the adhesive properties of diamond and matrix. Second, the surface of the diamond powder composite layer (W, Co, Ti) alloy film, a

polycrystalline diamond produced using this powder, polycrystalline diamond can improve strength and high temperature stability.
4 activation organic single crystal diamond surfaces
CVLT technology using the single crystal diamond layer grown on the surface of the resin having an affinity group and a compound resin can improve the life of the

diamond grinding wheel.
5.CVLT technology can also be used in a variety of tool and die, metal parts surface hardening, lubrication, anti-corrosion, anti-oxidation treatment.