Process selection of diamond saw blade head: Hydraulic balance of CNC floor boring and milling machine and compensation for the demand of bearings in the machine tool industry. New type of machine tool with international advanced level. Selection of cutting capacity for indexable shallow hole drilling in Kunming. PowerMILL7.0 new Function and characteristics Zigzag machining on CNC lathes Deformation study of large-edge inclination cutting Machine machining method in computer stereo drawing Application of disk parts 1 CNC lathe machining source program Tool compensation Application in CNC machining Carbide gun Drill introduces the key tool management of functional industrialization - innovative ideas to save production cost transistor amplifier structure UG file name naming suggestion Double Group won the "China Patent Excellence Awards for ultra-high temperature forging die materials developed in Taiwan PLC and motion control The perfect combination of 4-axis motion controller with PLC function A wine is also afraid of the deep intelligent CNC system: the new trend of numerical control technology development [label: tag] 1. Diamond particle size selection When the diamond particle size is coarse and a single particle size, The saw blade has sharp edges and high sawing efficiency, but the bending strength of the diamond agglomerates decreases; Fine or coarse grained diamond size during mixing, high durability saw blade, but less efficient. Considering the above factors, particle size of 50/60 mesh diamond select more appropriate.
1. Selection of diamond particle size When the diamond particle size is coarse and a single particle size, the saw blade head is sharp, the sawing efficiency is high, but the bending strength of the diamond agglomerate is decreased; when the diamond particle size is fine or coarse and fine particle size is mixed, the saw blade knife The head is durable but less efficient. Taking into account the above factors, it is more appropriate to select a diamond particle size of 50/60 mesh.
2. Selection of diamond distribution concentration
Within a certain range, when the diamond concentration changes from low to high, the sharpness and sawing efficiency of the saw blade gradually decrease, and the service life is gradually extended; however, if the concentration is too high, the saw blade becomes dull. With low concentration and coarse particle size, the efficiency will increase. The different effects of different parts of the cutter head during sawing are adopted, that is, the intermediate layer can adopt a lower concentration in the three-layer or more layer structure, and the middle groove is formed on the cutter head during the saw blade process, It helps to prevent the yaw of the saw blade and improve the quality of stone processing.
3. Selection of diamond strength
The strength of the diamond is an important indicator of the cutting performance. Too high strength will make the crystal difficult to break, the abrasive grain will be polished during use, and the sharpness will decrease, which will lead to deterioration of tool performance. When the diamond strength is insufficient, it will be easily broken after being impacted, and it is difficult to bear the heavy duty of cutting. Therefore, the strength should be selected from 130 to 140N.
4. Selection of binder phase
The performance of the saw blade does not depend solely on the diamond, but on the overall performance of the composite material of the cutter head formed by the proper fit of the diamond and the binder. For soft stone such as marble, the mechanical properties of the cutter head are required to be relatively low, and a copper-based binder may be selected. However, the copper-based binder has a low sintering temperature, low strength, low hardness, high toughness, and low bonding strength with diamond. When adding tungsten carbide (WC), WC or W2C is used as the framework metal, and an appropriate amount of cobalt is added to improve the strength, hardness and bonding characteristics, and a small amount of low-melting, low-hardness Cu, Sn, Zn and other metals are bonded. phase. The particle size of the main additive should be less than 200 mesh, and the particle size of the added component should be finer than 300 mesh.
5. Selection of sintering process
As the temperature increases, the degree of densification of the carcass increases, and the flexural strength increases. As the holding time increases, the flexural strength of the blank carcass and diamond agglomerates increases first and then decreases. Sintering at 800 ° C for 120 s to meet performance requirements.
1. Selection of diamond particle size When the diamond particle size is coarse and a single particle size, the saw blade head is sharp, the sawing efficiency is high, but the bending strength of the diamond agglomerate is decreased; when the diamond particle size is fine or coarse and fine particle size is mixed, the saw blade knife The head is durable but less efficient. Taking into account the above factors, it is more appropriate to select a diamond particle size of 50/60 mesh.
2. Selection of diamond distribution concentration
Within a certain range, when the diamond concentration changes from low to high, the sharpness and sawing efficiency of the saw blade gradually decrease, and the service life is gradually extended; however, if the concentration is too high, the saw blade becomes dull. With low concentration and coarse particle size, the efficiency will increase. The different effects of different parts of the cutter head during sawing are adopted, that is, the intermediate layer can adopt a lower concentration in the three-layer or more layer structure, and the middle groove is formed on the cutter head during the saw blade process, It helps to prevent the yaw of the saw blade and improve the quality of stone processing.
3. Selection of diamond strength
The strength of the diamond is an important indicator of the cutting performance. Too high strength will make the crystal difficult to break, the abrasive grain will be polished during use, and the sharpness will decrease, which will lead to deterioration of tool performance. When the diamond strength is insufficient, it will be easily broken after being impacted, and it is difficult to bear the heavy duty of cutting. Therefore, the strength should be selected from 130 to 140N.
4. Selection of binder phase
The performance of the saw blade does not depend solely on the diamond, but on the overall performance of the composite material of the cutter head formed by the proper fit of the diamond and the binder. For soft stone such as marble, the mechanical properties of the cutter head are required to be relatively low, and a copper-based binder may be selected. However, the copper-based binder has a low sintering temperature, low strength, low hardness, high toughness, and low bonding strength with diamond. When adding tungsten carbide (WC), WC or W2C is used as the framework metal, and an appropriate amount of cobalt is added to improve the strength, hardness and bonding characteristics, and a small amount of low-melting, low-hardness Cu, Sn, Zn and other metals are bonded. phase. The particle size of the main additive should be less than 200 mesh, and the particle size of the added component should be finer than 300 mesh.
5. Selection of sintering process
As the temperature increases, the degree of densification of the carcass increases, and the flexural strength increases. As the holding time increases, the flexural strength of the blank carcass and diamond agglomerates increases first and then decreases. Sintering at 800 ° C for 120 s to meet performance requirements.
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