Temperature characteristics of diamond tools


Diamond cutter is a special tool for cutting, widely used in the production and processing of hard and brittle raw materials such as marble and porcelain. The key of diamond cutter is composed of two parts: base material and cutter head. The base material is a part of the key support point for bonding the cutter head, while the cutter head is a part of cutting in the whole process of application. The cutter head will continue to be consumed in the application, while the base material is not easy, The cutting effect of the cutter head is often due to the presence of diamond in it. As the hard material at the present stage, diamond is the production and processing target of friction cutting in the cutter head, while diamond particles are encapsulated in the cutter head by metal materials. In the whole process of application, the metal material embryo and diamond are consumed together. Generally, the ideal condition is that the metal material embryo consumes faster than the alloy steel, That can not only ensure the sharpness of the cutter head, but also ensure that the cutter head has a long service life.
The factors that endanger the high efficiency and service life of diamond tool manufacturers include the main parameters of sawing process and the particle size distribution, concentration value and strength of fusion agent of diamond. According to the cutting energy, there are tool linear speed, sawing concentration value and cutting speed.
According to the traditional basic theory, the harm of temperature to the whole process of cutting tools is embodied in two aspects: one is the graphitization of diamond in the agglomeration; The second is that the diamond particles fall off too early due to the thermal interaction between the diamond and the embryo. The new research shows that the heat generated in the whole cutting process is transferred to the agglomeration. The temperature in the arc zone is not high, generally between 40 and 120 ℃. However, the cutting point temperature of abrasive particles is relatively high, generally between 250 and 700 ℃. However, the freezing liquid only reduces the average temperature of the arc zone, but does little harm to the abrasive temperature. Such temperature will not lead to the carbonization of high-purity graphite, but will change the friction characteristics between the abrasive particles and the product workpiece, and cause the internal stress between the diamond and the additive, resulting in the global bending of the ineffective principle of diamond. The research shows that the temperature effect is a major factor affecting tool damage.

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