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stone polishing machine
The influence components of diamond blade efficiency and life are cutting technological parameter, grit of diamond, concentration, bond hardness, etc.

The reducing parameter are blade RPM, reducing concentration and feeding velocity.


1. Chopping parameter:


(1)The linear speed of blade: In practical work, the linear pace of blade is limited by gear situations, quality of blade and stone material. From greatest blade reducing life and slicing effectivity, to pick linear pace of blade primarily based on completely different stone nature.


When cutting the granite, the linear speed of blade shall be selected throughout the range of 25m-35m/s.


For granite with excessive quartz content material and arduous chopping, the linear pace of blade shall be taken in lower limit.


For producing tile of granite, the diameter of used blade shall be smaller, and linear velocity will be reached to 35m/s.


(2)Chopping depth: chopping depth is related to diamond abrasion, effective cutting, blade stress situation, stone nature and more necessary parameter. Typically, when it's larger linear speed on diamond saw blade, to select small reducing depth, From current know-how, the depth of cutting blade shall be chosen between 1mm-10mm.


Normally, the big diameter blade to chop granite block, the cutting depth shall be managed between 1mm-2mm, and cut back the feeding speed. When it's a big linear velocity of diamond blade, choose the big slicing depth.


But, when the noticed machine performance and blade strength in permission range, select massive slicing depth for enhancing reducing efficiency.


When there is a request on processing floor, shall adopt small cutting depth.


(3)Feeding velocity: the feeding velocity is the feeding velocity of chopping stone. Its dimension impact the reducing efficiency, blade stress and cooling situations of blade space. Its worth shall be chosen as per stone nature. Generally, minimize soft stone, like marble, shall increase the feeding velocity, if the feeding velocity is lower, it is going to be better to improve the reducing effectivity.


To cut fine grain construction and homogeneous granite, shall increase the feeding speed, if the feeding pace is lower, the segment shall be simple to be wear. However to chop tough grain construction and uneven gentle and laborious granite, shall cut back feeding pace, in any other case, which could trigger blade shake and result in diamond broken to scale back reducing effectivity.


The feeding pace of chopping granite is often chosen between the vary of 9m-12m/min.


2. Different influencing elements


(1)Diamond grit: the common diamond grits is in the range of 30/35-60/80.


if the stone is harder, should choose high-quality grit. As a result of in the identical stress condition, diamond the finer the sharper, to the good thing about reducing hard stone. Moreover, usually it has the request of high cutting efficiency on large diameter blade, ought to choose rough grits, corresponding to 30/40, 40/50; the small diameter blade has decrease slicing efficiency, and require stone cross-section smooth, ought to select advantageous grits, akin to 50/60, 60/80.


(2)Segment focus: The section focus is the diamond distribution density in working-degree is bond (mean Unit area contained the burden of diamond). Normal present that it is with a 4.Four carat diamond per centimeter in working bond, the focus is 100%, and when it comprise 3.Three carat, the focus is 75%.


Volume concentration is said what number of share of diamond in quantity of segment, and provide the focus is 100% when the diamond volume occupy 1/4 of total volume. Enhance the diamond focus is expected to extend the life of blade, due to the increased focus that scale back the common chopping power of each diamond, however increase the depth will probably be absolutely to add the price of blade, and thus, there's a most economical focus, and the focus will increase with excessive cutting effectivity.


(3)Hardness of section bond: Typically, the upper hardness of bond, and the upper wear resistance capability. So, when lower the high abrasive stone, the hardness of bond shall be higher; when cut softer stone, the hardness of bond shall be decrease; when minimize high abrasive and onerous stone, the hardness of bond shall be medium.


(4)Force effects, temperature effects and grinding injury: diamond circular noticed blades within the strategy of chopping stone, will probably be subject to centrifugal power, slicing pressure, chopping heat alternating the role of the load. Pressure and temperature effects brought on by the diamond noticed blade worn to donate loss.


(a)Force impact: in the sawing process, the blade is topic to axial power and the role of tangential force. Within the circumferential direction and radial power exists, making the noticed blade within the axial wavy dish within the radial course. Each deformation will outcome in the rock part is not straight, stone waste, reducing noise, vibration intensified, ensuing in the early diamond agglomerate breakage, lower the saw blade life.


(b)Temperature effect: the normal principle: the impact of temperature on the strategy of chopping is mainly in two features: First, to trigger the agglomeration of diamond graphitization; secondly, heat power attributable to the diamond and matrix and diamond particles prematureoff.


The brand new study exhibits that: the heat generated in the chopping course of incoming agglomeration. Arc temperature isn't high, generally between 40-one hundred twenty Degrees C. Abrasive grinding level temperature is increased, typically between 250-700 Degrees C. Cooling liquid solely scale back the common temperature of the arc zone, abrasive temperature was much less affected.


So the temperature does not result in a graphite charring, but trigger friction between the abrasive and the workpiece performance modifications, and between the diamond and additives, thermal stress, which led to the elemental bending of diamond failure mechanism.


It indicates that the temperature effect is to make the most important influence of blade breakage.


(c)Grinding harm: due to the pressure and temperature stree, the noticed blade will put on damage after a period of reducing. Grinding damage within the type of the next: abrasive wear, native crushing, crushing a big area, off, binder alongside the mechanical abrasion of cutting pace course


. Abrasive wear: diamond particles fixed friction with fashion items, edge passivation into the plane, loss of cutting efficiency, and improve friction. Slicing heat will make the diamond particle floor a skinny layer of graphitization, the hardness is significantly decreased, and increased wear: diamond particle floor is subjected to alternating thermal stress, but in addition to withstand the stress of alternating chopping, there will be fatigue crack partially damaged, revealing a pointy new edge, is an ideal put on pattern; massive space of broken: the diamond blade wet saw particles in Qie Ruqie withstand the impact load, the extra outsanding particles and grain consumed prematurely; off: alternating cutting power so that the diamond particles in the binder is shaking then cause loose. At the identical time, the binding agent within the sawing course of put on and slicing heat to soften the binder.

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