BN has a variety of excellent performance, widely used in high frequency electric insulator and plasma arc

BN has a variety of excellent properties, are widely used in high frequency electric insulator and plasma arc, automatic welding temperature of the coating frame, high-frequency induction furnace of the material, a semiconductor solid-phase admixture, atomic reactor structural materials, packaging Abrasive grinding wheel neutron radiation, radar transmission window, the radar antenna and rocket engines medium composition and the like. Have excellent lubricating properties, high temperature lubricant and various models for the release agent. Can produce high temperature abrasive wheels nitride crucibles and other products. Superhard materials can be used for geological exploration, oil drilling bits and high-speed cutting tools. Abrasive materials can be used as metal abrasive grinding, with the processing surface temperature is low, the characteristics of surface quality parts. Boron nitride is also used as additives of various materials. Made by the boron nitride fibers processed for the high-modulus fibers, is an inorganic synthetic engineering materials can be widely used in the chemical industry, textile industry, aerospace technology and other cutting-edge industries.

Boron oxide is obtained by melt spinning fibers of boron trioxide

Method boron nitride fibers: boron oxide is obtained by melt spinning fibers of boron trioxide, and at temperatures above 350 ℃ heating in synthetic diamond powder to form boron amine, ammonia, and then further at 1800 ℃ high temperature sintering pure fibers. To obtain composite fiber, you need to borane, grinding wheel, boron trichloride reaction gas in a hot tungsten filament chemical vapor deposition on the can. Boron or Polycrystalline diamond first synthesized polymer, and then at about 100 ℃ be melt-spun. After spinning in ammonia sintering, 1000 ℃ when the fiber was black, if ammonia is further sintering temperature at 1200 ℃ brown, 1400 ℃ to white.
Products made with this method, the residual small amount of unreacted starting material. In the laboratory in order to obtain a small amount of high-purity boron nitride, boron halide and ammonia can react to the system.

Boron trichloride and hydrogen together with ammonia gas heated to a certain temperature, mixing

Boron trichloride, ammonia vapor deposition method obtained with boron trichloride with hydrogen and heated to a temperature of ammonia mixed in a predetermined reaction temperature required for abrasive grinding in the reactor, and then at a higher temperature, the heating was continued for an ammonia stream some time to prepare boron nitride products. The reaction equation is as follows:
Borax borax chloride method and pressure at 450 ℃ dehydrated ammonium chloride in 110 ~ 120 ℃ previously dried, crushed to 40 mesh respectively fineness. Anhydrous borax and ammonium chloride according to the mass ratio of the ingredients, mixing and compression molding. Then, give it away Polycrystalline diamond and pass into excess ammonia, carry out the reaction at 1050 ℃ generate coarse grain boron nitride, pulverized, sieved, washed with water, filtered and dried to obtain boron nitride products. The reaction equation is as follows: cubic boron nitride crystal abrasive grinding, can be used as raw material hexagonal crystal, adding magnesium, lithium hydride powder additive to participate in under high pressure high temperature reaction.

Shall be grinding at the time to continue cutting

Grinding time is very important, because it is not a sharp blade at work, saw the body may have a fever, also causing the motor load is too large, synthetic diamond of the blade. Shall be grinding at the time to continue cutting, cutting every 10% increase in volume, will bring an additional 50% of the alloy damage and shorten the life of saw blade. Must be cleared regularly serrated and saw gathered at the side of the resin plate, debris and other debris, because the adhesive material cubic boron nitride, the resistance will increase, resulting in high energy consumption (in extreme cases, can cause the machine motor burned) and the rough cutting quality. If both grinding wheel is blunt, it may cause damage to teeth. Avoid using aggressive cleaning solvents, long blade when not in use, should be cleaned sharpening, buy oil for rust treatment, and in its original carton and then properly placed inside.

In the new rails and on the basis of hydrostatic

This can automatically adjust the size of the system, through a "learning function" work, but also to further leverage its safety and high efficiency process for design and development. In most cases, the system and cubic boron nitride non-circular grinding machine parts together. Meanwhile, the machine is installed on the rail and ball screw in the new hydrostatic guideway and on the basis Polycrystalline diamond have a high load capacity, abrasive grinding the basic accuracy of machine tools. Of course, part of the exchange time, the processing cycle and downtime is an integrated consideration of the subject, we need to combine the user's requirements to achieve all-round solution.

Foreign markets grinder and grinding centers are diverse functional requirements

Whether internal grinding, cylindrical grinding, or eccentric grinding, centerless grinding, cylindrical grinding machining center is the next generation of Star billion next development goals. (Figure) put it plainly, it is a length of 500mm and a weight of less than 30kg crankshaft can be done on the grinder Abrasive grinding wheel, machining a smooth, high precision, good benefits. Foreign markets grinder and grinding centers synthetic diamond requirements are diverse, according to the customer's specific situation daily workload, level of priority of each unit and system cost of expense may be. The R & D work is an arduous core mission, we must assure customers that they can repeatedly use the machine to complete the new processing tasks.

CNC Grinder Stator such a mature plane, based on the conduct innovative research and development

CNC grinding machine in the stator such a mature plane, based on the conduct innovative research and development, the full implementation of measures to reduce costs, widespread use of biaxial CNC, a single point arc trim, high-speed plunge grinding; adopt Beijing KND CNC grinding dedicated system, sophisticated design bed body and slide the machine's overall high rigidity, good synthetic diamond powder; optimal design servo feed system, the machine feed high rigidity, the system's rapid response is good; using preloaded precision ball bearing cross roller guides , high precision and good rigidity; using preloaded precision workpiece spindle unit, high grinding wheel, keeping well; Polycrystalline diamond unloading device, simple structure, reliable operation, easy adjustment; using a single point arc dresser, compact structure, smooth operation, high precision trimming; adopts motor AC inverter technology, easy workpiece speed stepless adjustable; using high rigidity spindle, with separate cooling tank, to achieve efficient grinding machine; using industrial modeling and human engineering design principles integral machine casing, sealed good, elegant appearance, easy to operate.