What are the influencing factors of diamond blades

Diamond blade is a common tool for fiber laser cutting, which is widely used in the production of hard and brittle materials such as natural marble and pottery. Diamond blade is mainly composed of two parts; plate and cutter head. The plate is an important fulcrum part of the bonded cutter head. The cutter head is a part of fiber laser cutting in the whole process of use. The cutter head will continue to be consumed during use, while the plate is not easy. The cutter head can usually perform the role of fiber laser cutting because it contains diamonds. As the hardest chemical substance, diamond is rubbed in the cutter head for fiber laser cutting to produce the overall target. The diamond particles are wrapped inside the cutter head by metal composite materials. In the whole process of use, the metal composite material blank and diamond Generally, the ideal situation is that the metal composite body consumes faster than the fine steel, which can not only ensure the sharpness of the cutter head but also ensure the longer service life of the cutter head.

Influencing factors
1. Diamond particle size analysis: the common diamond particle size analysis is in the range of 30/35 to 60/80. The harder the rock layer, the finer the particle size analysis should be selected. Because under the same pressure standard, the finer the diamond, the sharper it is, which is conducive to entering the hard rock layer. In addition, generally large-diameter blades require high cutting efficiency, and coarser particle size should be selected.
2. Concentration value of the cutter head: In short, the diamond concentration value refers to the density of diamonds in the middle and high-level blanks during work (that is, the weight of diamonds contained in the company's floor area). The "standard" stipulates that when the working body contains 4.4 carats of diamond per cubic decimeter, its concentration value is 100%, and when it contains 3.3 carats of diamond, its concentration value is 75%. The capacity concentration value indicates how much capacity the diamond occupies in the agglomerate, and it is stipulated that when the capacity of diamond accounts for 1/4 of the total capacity, the concentration value is 100%. Expanding the diamond concentration value promises to increase the life of the insert because increasing the concentration value reduces the average cutting effort experienced by a diamond slice. However, increasing the depth will inevitably increase the cost of the blade, so there is a concentration value that is social and economical, and the concentration value expands with the expansion of the cutting rate.
3. The strength of the binder of the cutter head: Generally speaking, the higher the strength of the binder, the stronger its anti-wear ability. Therefore, when sawing the abrasive rock layer, the bond strength should be high; when sawing the soft rock layer, the bond strength should be low; when sawing the abrasive and hard rock layer , the compressive strength of the binder should be appropriate.
4. Force effect, temperature effect and damage: During the whole process of fiber laser cutting natural marble, the diamond circular blade will be affected by alternating loads such as cohesion force, sawing force, and sawing heat.
Wear and tear of diamond circular blades due to force and temperature effects.
5. Force effect: During the whole process of sawing, the blade is subjected to axial force and axial force. Due to the force in the circular direction and the radial direction, the blade is promoted to be wave-shaped in the axial direction and dish-shaped in the radial direction. These two deformations will cause the rock profile to be non-vertical, the marble consumption will be high, the noise will be loud during sawing, and the vibration will increase, resulting in early damage of diamond agglomeration and shortened service life of the blade.
5. Temperature effect: Traditional basic knowledge feeling: The damage of temperature to the whole process of the blade is mainly manifested in two aspects: one is to cause the diamond in the agglomeration to graphitize; the other is to cause the heat force between the diamond and the body to cause diamond particles Falling off prematurely. The new study shows that the calorific value caused by fiber laser cutting throughout the process is important for agglomeration. The temperature in the arc zone is not high, generally between 40 and 120°C. However, the grinding point temperature of the milled yarn particles is relatively high, generally between 250 and 700 °C. The refrigerant only reduces the average temperature of the arc area, but does little damage to the temperature of the milled yarn particles. Such a temperature does not cause coking of the calcined oil, but it will change the friction characteristics between the abrasive particles and the product workpiece, and cause thermal stress between the diamond and the additive, resulting in a comprehensive bending of the diamond failure mechanism. change. Studies have shown that the effect of temperature is a large factor in the destruction of blades.
6. Damage: Due to the force effect and temperature, the blade will generally be damaged after a period of use.
The damage methods mainly include the following types: metal composite damage, partial crushing, large-scale crushing, falling, and abrasion of industrial equipment in the direction of sawing speed. Metal composite damage: diamond particles and parts are constantly rubbed, the edge stainless steel is passivated into a plane design, the process performance is lost, and the friction is enlarged. The heat of sawing will cause graphitization on the surface of diamond particles, which will greatly reduce the compressive strength and aggravate the damage: the surface of diamond particles bears the alternate thermal stress and the alternate milling stress field, which will cause fatigue cracks and cracks. A part of it is broken, showing sharp new edges, which is an ideal form of damage; large-scale broken: diamond particles bear destructive loads when they enter and cut out, and the obvious particles and crystals are prematurely consumed; falling: replacement and transformation The amount of cutting makes the diamond particles are constantly shaken in the bond, resulting in loosening. In addition, the destruction of the bond itself and sawing heat throughout the sawing process loosens the bond. This reduces the holding power of the bond, and when the amount of cutting on the particles exceeds the holding power, the diamond particles will fall off. No matter which kind of damage is closely related to the load and temperature borne by the diamond particles. Both of these depend on the cutting process and refrigeration lubrication specifications.