The affect components of diamond blade efficiency and life are chopping technological parameter, grit of diamond, focus, bond hardness, and many others.
The reducing parameter are blade RPM, chopping concentration and feeding speed.
1. Cutting parameter:
(1)The linear pace of blade: In sensible work, the linear speed of blade is restricted by tools circumstances, quality of blade and stone materials. From best blade chopping life and slicing efficiency, to pick out linear speed of blade based mostly on different stone nature.
When cutting the granite, the linear speed of blade shall be selected throughout the vary of 25m-35m/s.
For granite with excessive quartz content material and laborious chopping, the linear speed of blade shall be taken in decrease restrict.
For producing tile of granite, the diameter of used blade shall be smaller, and linear velocity could be reached to 35m/s.
(2)Chopping depth: slicing depth is related to diamond abrasion, effective cutting, blade stress situation, stone nature and extra vital parameter. Usually, when it's larger linear pace on diamond saw blade, to pick out small slicing depth, From current technology, the depth of slicing blade shall be chosen between 1mm-10mm.
Usually, the large diameter blade to cut granite block, the chopping depth shall be managed between 1mm-2mm, and cut back the feeding speed. When it's a big linear velocity of diamond blade, select the large chopping depth.
But, when the noticed machine performance and blade power in permission vary, select huge reducing depth for enhancing cutting efficiency.
When there is a request on processing surface, shall undertake small reducing depth.
(3)Feeding pace: the feeding velocity is the feeding velocity of cutting stone. Its dimension effect the reducing effectivity, blade stress and cooling situations of blade area. Its worth shall be chosen as per stone nature. Usually, lower tender stone, like marble, shall enhance the feeding velocity, if the feeding speed is decrease, it will be higher to improve the chopping effectivity.
To cut advantageous grain structure and homogeneous granite, shall enhance the feeding pace, if the feeding pace is decrease, the section will likely be straightforward to be put on. But to chop tough grain construction and uneven delicate and onerous granite, shall scale back feeding speed, otherwise, which might trigger blade shake and lead to diamond broken to reduce chopping efficiency.
The feeding velocity of reducing granite is normally chosen between the vary of 9m-12m/min.
2. Other influencing elements
(1)Diamond grit: the widespread diamond grits is within the range of 30/35-60/80.
if the stone is harder, should choose superb grit. Because in the identical pressure condition, diamond the finer the sharper, to the advantage of reducing onerous stone. Furthermore, typically it has the request of excessive chopping efficiency on huge diameter blade, ought to choose tough grits, akin to 30/40, 40/50; the small diameter blade has decrease cutting effectivity, and require stone cross-part smooth, ought to choose nice grits, such as 50/60, 60/80.
(2)Section concentration: The phase focus is the diamond distribution density in working-stage is bond (imply Unit space contained the load of diamond). Customary provide that it is with a 4.4 carat diamond per centimeter in working bond, the focus is 100%, and when it comprise 3.Three carat, the focus is 75%.
Quantity focus is said how many percentage of diamond in quantity of segment, and supply the concentration is 100% when the diamond quantity occupy 1/four of whole volume. Enhance the diamond focus is predicted to increase the life of blade, due to the increased concentration that scale back the average reducing drive of each diamond, however improve the depth will be certainly so as to add the price of blade, and thus, there is a most economical focus, and the concentration will improve with excessive cutting efficiency.
(3)Hardness of phase bond: Generally, the higher hardness of bond, and the upper wear resistance capacity. So, when reduce the excessive abrasive stone, the hardness of bond shall be greater; when minimize softer stone, the hardness of bond shall be decrease; when minimize excessive abrasive and arduous stone, the hardness of bond shall be medium.
(4)Pressure effects, temperature results and grinding injury: diamond circular noticed blades within the process of slicing stone, will likely be topic to centrifugal pressure, cutting force, cutting heat alternating the role of the load. Power and temperature effects caused by the diamond saw blade worn to donate loss.
(a)Drive impact: in the sawing course of, the blade is topic to axial drive and the role of tangential pressure. Within the circumferential course and radial force exists, making the noticed blade in the axial wavy dish in the radial path. Each deformation will outcome within the rock part is not straight, stone waste, slicing noise, vibration intensified, ensuing within the early diamond agglomerate breakage, decrease the noticed blade life.
(b)Temperature impact: the normal idea: the affect of temperature on the means of cutting is primarily in two features: First, to cause the agglomeration of diamond graphitization; secondly, heat drive attributable to the diamond and matrix and diamond particles prematureoff.
The brand new examine reveals that: the heat generated within the reducing course of incoming agglomeration. Arc temperature is not excessive, generally between 40-a hundred and twenty Degrees C. Abrasive grinding level temperature is greater, usually between 250-seven hundred Levels C. Cooling liquid solely cut back the average temperature of the arc zone, abrasive temperature was less affected.
So the temperature does not end in a graphite charring, however trigger friction between the abrasive and the workpiece efficiency changes, and between the diamond and additives, thermal stress, which led to the basic bending of diamond failure mechanism.
It signifies that the temperature impact is to make the most important impact of blade breakage.
(c)Grinding damage: due to the pressure and temperature stree, the noticed blade will put on damage after a period of reducing. Grinding harm within the form of the next: abrasive put on, local crushing, crushing a big area, off, binder alongside the mechanical abrasion of chopping velocity route
. Abrasive put on: diamond blade 12 inch particles fixed friction with model pieces, edge passivation into the plane, lack of reducing efficiency, and increase friction. Slicing heat will make the diamond particle floor a skinny layer of graphitization, the hardness is enormously lowered, and elevated put on: diamond particle surface is subjected to alternating thermal stress, but additionally to withstand the stress of alternating slicing, there shall be fatigue crack partially broken, revealing a sharp new edge, is a perfect wear pattern; large area of damaged: the diamond particles in Qie Ruqie withstand the impression load, the extra outsanding particles and grain consumed prematurely; off: alternating slicing drive so that the diamond particles in the binder is shaking then cause unfastened. At the same time, the binding agent within the sawing course of put on and chopping heat to soften the binder.