The total yield of material of our country stone, stone export volume and stone consumption reached the first place in the world: stone processing enterprises 2 thousand, from personnel of course of study nearly 5000000, with an annual output of 6000000 cubic meters of stone, sheet metal with an annual output of 120000000 square meters, annual production value of more than 80000000000 yuan, has advanced more than 500 production lines, the total import and export volume of more than US $1200000000, live up to one's name to become the stone production big country. China in the above-mentioned aspects have great power, but still not be powerful nation. With the global economic integration, China's entry into WTO, how to make our country become the production of diamond tools of power, this is to be placed in our country is an important task in front of peers. According to our practice and investigation, only to improve the quality of diamond tool problem, offer a few views. 1 for the manufacture of diamond tools providing production stable performance, coarse particles, good thermal stability and high strength diamond diamond grade quality, particle size and concentration on the diamond tool has a decisive role. Our country on diamond synthesis, the top six small tonnage high technology already hasten is mature, the top six large tonnage and large cavity continuous improvement process, top two synthetic diamond has also begun to take shape, powder catalyst synthesis, carbon leaf wax stones, raw materials for the production of continuous improvement. Therefore, in view of our country manufacturing of diamond tools, batch synthesis of stable performance, coarse particles, good thermal stability performance of high strength diamond is completely possible. The foreign diamond company, in addition to the launch of SDA +, SDB, DSN, MBS, ISD series, DeBeers for the country market, BK30 BK60, BKI, BK70 diamond, South Korea and Japan into the company launched the top six synthetic SDS series diamond, are worthy of our reference. 2 with strong carbide forming elements, improve the diamond retention to improve cutting efficiency and service life of diamond saw blade is a key factor to improve the holding force of matrix to diamond. The matrix of diamond has good control force, diamond will not prematurely detached, and has the largest protruding height, cutting sharp, high efficiency. 3 using ultra-fine powder and pre alloyed powder in the production of diamond saw blade for cutting, appropriate uses of ultrafine metal powder with pre alloyed powder. Metal powder refinement is beneficial to reduce the sintering temperature, improve the hardness. Pre alloyed powder, can prevent the low melting point metal premature loss and segregation, in favor of the sintering products elastic limit and yield strength, to increase the durability of diamond, but also can reduce the sintering temperature and heat preservation time. China's Shanghai material, artificial crystal Institute of Beijing, Changsha Metallurgical Materials and south of powder metallurgy are made great efforts in this respect. South Korea in high-grade production of saw blade, the wide use of BASF, UM, INCO, Fum-tungstene, Kennametal companies such as ultra-fine powder and pre alloy powder. 4 in the cutter head to promote the production of granulation granulation process in our country hard alloy, ceramic production has been widely used in recent years, the diamond cutter head production has also obtained the widespread application and the development. Powder granulating the advantages, diamond segregation decreases, more uniform distribution of the cutter head, improve cutting performance, increase the fluidity of powders, so that the volume of cold pressing process to be used, the common cold pressing process better, reduce the harm of dust on workers. Its disadvantage is the increased investment and technology program, granulation to binder, the latter on the welding, sintering and carcass performance may have adverse effects. Comparison of advantages and disadvantages of various granulation method the table below. Disadvantages: the need to clean, not including the diamond, only a kind of metal, and equipment. Rolling method: advantages: easy to operate, paraffin wax, good adhesion, spherical. Disadvantages: granulating process is not stable, including diamond, granulating difficulty, need sieving. Crushing sieving method: advantage: the speed, less dosage of binder, easy operation. Disadvantages: not including diamond, require screening, shape is not uniform, the passing rate of 20% ~ 40%. Hand sieving method: advantages: simple, less investment, with the diamond, the small production. Disadvantages: difficult to select the desired binder, labor and are heavy, irregular shape. The pressure roll screen and the rolling method: advantages: stable process, easy cleaning, can be automated, with diamond, a granulating capacity choice. Disadvantages: difficult to select adhesives, using more flux. Low speed stirring to high speed cutting method: advantages: can be automated, particle size can be controlled manually. Disadvantages: not including diamond, a granulating quantity can not be too little, the passing rate of 70% ~ 80%. German flight launched the GA180, GA240 granulator, the granulation process by mixed with binder stirring and rubbing sieve to rolling granulating constitute scraper. By this method, the cutter head cold press 3 times faster, die life 1 times, cold pressure reduces the cost by 2 / 3. Han Guodi X company launched CA-10 granulator, the process by adding adhesive, dry mixing, cylindrical mixing on low speed (25 28R / min ), core for high speed cutting ( 2300 ~ 2800r / min ). In order to granulation, developed in Germany, 400 GB300, 500 binder using Olycox, Korea, China Nanjing si still trade heart developed WS-120 granulating agent for white groups spherical powder, density is 1.068g / cm3, thermal decomposition temperature of 320 to 350 DEG C, after sintering residual ash < 0.01%, has been replaced by imports of binder, has in the diamond tools factory are widely used. 5 sintering process vacuum protective atmosphere sintering process and sintered diamond saw blade production equipment is a key process, it directly affects the blade of the knife head density, hardness and cutting performance of sintering equipment, technical performance and effect of saw blade production cost, product and quality. We are right recently whole sintering furnace diamond saw blade was investigated, using several representative furnace using the same formula powder sintering test were compared, the results showed that: ( 1) the hydrogen protection, pressureless sintering and furnace and Zhong Zhaolu for the production of low-grade small size saw blade, its single output, but saw blade life is low; ( 2) CSF500 hot pressure sintering furnace, furnace temperature distribution is uniform, the protection of nitrogen pressurized sintering saw high hardness, density is big. When the saw cut is sharp, long service life, can produce high-grade saw, and can produce specifications for many varieties of saw blade; ( 3) the RYL series frequency protective atmosphere sintering furnace design and superior performance, is suitable for single specification saw mass production, but for the many varieties of poor adaptability, furnace temperature distribution remains to be perfected further; ( 4) SF500, ZBRY-2 type sintering furnace for perfection, is a promising sintering equipment. 6 diamond rope saw production using hot isostatic pressing and high temperature brazing technology in recent ten years, the diamond wire saw in Quarrying and construction projects has been the creative application of the diamond wire saw, from the quarry to the stone processing plant, from the large cuts to shaping, cut from the sheet material to the special-shaped products processing and construction of a wide variety of applications in the world scope, the stone cutting 10% of the share, and there is a growing trend. In the development process has several major characteristics: ( 1) bead production method of single-layer and double-layer metal by electroplating diamond beads, to hot press sintering and high temperature brazing beads, so that the rope saw applications range from the marble extended to granite and concrete. ( 2) rope saw diameter from 10 to 12mm reduced to 6 ~ 8mm, improve and cutting efficiency, reduce material consumption. ( 3) the CNC control rope saw machine development, make the rope saw as possible, so that the rope saw machine into the sheet plant, effectively cutting plate and profiled products, can replace the frame saw and the bridge plate sawing machine. ( 4) the hot isostatic pressing process for bead production, improve the density, hardness, beading strength and service life. Hot isostatic pressing ( HIP ) is a good products in sintering, hot isostatic pressing machine, with an inert gas ( argon ) Ar for pressure transmission medium, the temperature rise to 1320 to 1400 DEG C, gas produced from thermal expansion of 80 ~ 150MPa pressure, the beads in glass bag processing for some time. Hot isostatic pressing can reduce the product porosity, improve the density, strength, impact toughness and the use of performance. China's Beijing iron and Steel Research Institute, south of powder metallurgy institute, Beijing Nonferrous Metal Research Institute, Zhuzhou hard alloy factory have hot isostatic pressing equipment. ( 5) the brazed monolayer diamond bead the technology is China's Taipei Taiwan grinding wheel manufacturing company ( KNIKInc ) launched a patent new technology, high temperature brazing beads diamond arrangement rule, reasonable distribution, chemical bonding and metallurgy combination coexist, diamond force strong, prominent high. The diamond usage can save half, cutting speed is 2 ~ 4 times the general saw blade, cutting blade life quite, cost down.