The affect elements of diamond blade effectivity and life are reducing technological parameter, grit of diamond, focus, bond hardness, etc.
The chopping parameter are blade RPM, reducing focus and feeding speed.
1. Slicing parameter:
(1)The linear pace of blade: In practical work, the linear pace of blade is proscribed by equipment conditions, high quality of blade and stone materials. From greatest blade cutting life and reducing efficiency, to select linear speed of blade based mostly on completely different stone nature.
When chopping the granite, the linear velocity of blade shall be chosen inside the vary of 25m-35m/s.
For granite with high quartz content material and exhausting reducing, the linear pace of blade shall be taken in lower restrict.
For producing tile of granite, the diameter of used blade shall be smaller, and linear pace can be reached to 35m/s.
(2)Chopping depth: cutting depth is expounded to diamond abrasion, effective chopping, blade stress condition, stone nature and extra important parameter. Usually, when it is larger linear velocity on diamond noticed blade, to pick out small cutting depth, From current technology, the depth of chopping blade shall be chosen between 1mm-10mm.
Normally, the large diameter blade to cut granite block, the slicing depth shall be managed between 1mm-2mm, and reduce the feeding pace. When it's a large linear pace of diamond blade, select the massive slicing depth.
However, when the saw machine performance and blade energy in permission range, select huge cutting depth for bettering reducing efficiency.
When there is a request on processing floor, shall adopt small slicing depth.
(3)Feeding velocity: the feeding speed is the feeding velocity of chopping stone. Its measurement impact the slicing efficiency, blade stress and cooling situations of blade area. Its worth shall be chosen as per stone nature. Generally, lower comfortable stone, like marble, shall increase the feeding pace, if the feeding velocity is lower, it will be better to improve the chopping efficiency.
To cut wonderful grain structure and homogeneous granite, shall enhance the feeding velocity, if the feeding speed is lower, the section will be easy to be wear. But to cut tough grain construction and uneven soft and onerous granite, shall scale back feeding pace, in any other case, which might cause blade shake and lead to diamond broken to scale back chopping efficiency.
The feeding speed of cutting granite is generally chosen between the range of 9m-12m/min.
2. Other influencing factors
(1)Diamond grit: the frequent diamond grits is in the range of 30/35-60/80.
if the stone is more durable, ought to choose fine grit. Because in the identical stress situation, diamond the finer the sharper, to the good thing about chopping onerous stone. Moreover, usually it has the request of excessive slicing effectivity on massive diameter blade, ought to choose tough grits, equivalent to 30/40, 40/50; the small diameter blade has lower reducing effectivity, and require stone cross-section smooth, should choose wonderful grits, equivalent to 50/60, 60/80.
(2)Phase concentration: The section focus is the diamond distribution density in working-level is bond (imply Unit area contained the weight of diamond). Normal present that it is with a 4.4 carat diamond per centimeter in working bond, the focus is 100%, and when it include 3.Three carat, the concentration is 75%.
Quantity focus is said what number of percentage of diamond in quantity of segment, and provide the focus is 100% when the diamond volume occupy 1/4 of total volume. Improve the diamond focus is predicted to extend the life of blade, because of the elevated focus that reduce the typical reducing pressure of every diamond, but enhance the depth will probably be certainly to add the cost of blade, and thus, there is a most economical focus, and the focus will enhance with excessive reducing effectivity.
(3)Hardness of segment bond: Typically, the upper hardness of bond, and the higher wear resistance ability. So, when cut the high abrasive stone, the hardness of bond shall be greater; when cut softer stone, the hardness of bond shall be decrease; when cut excessive abrasive and arduous stone, the hardness of bond shall be medium.
(4)Drive results, temperature effects and grinding harm: diamond circular noticed blades within the strategy of cutting stone, shall be topic to centrifugal force, slicing pressure, slicing heat alternating the position of the load. Drive and temperature results caused by the diamond noticed blade worn to donate loss.
(a)Power effect: in the sawing process, the blade is subject to axial power and the role of tangential drive. Within the circumferential direction and radial power exists, making the saw blade in the axial wavy dish in the radial direction. Both deformation will end result within the rock part just isn't straight, stone waste, reducing noise, vibration intensified, resulting in the early diamond agglomerate breakage, lower the saw blade life.
(b)Temperature effect: the normal idea: the impact of temperature on the means of slicing is primarily in two points: First, to trigger the agglomeration of diamond graphitization; secondly, heat pressure brought on by the diamond and matrix and diamond particles prematureoff.
The new examine reveals that: the heat generated within the slicing course of incoming agglomeration. Arc temperature shouldn't be excessive, usually between 40-120 Degrees C. Abrasive grinding level temperature is larger, typically between 250-seven hundred Levels C. Cooling liquid only scale back the typical temperature of the arc zone, abrasive temperature was less affected.
So the temperature does not result in a graphite charring, however trigger friction between the abrasive and the workpiece performance adjustments, and between the diamond and additives, thermal stress, which led to the elemental bending of diamond failure mechanism.
It signifies that the temperature effect is to make the largest influence of blade breakage.
(c)Grinding damage: because of the force and temperature stree, the saw blade will put on damage after a interval of reducing. Grinding injury in the type of the following: abrasive wear, native crushing, crushing a large space, off, binder alongside the mechanical abrasion of cutting speed course
. Abrasive wear: diamond particles fixed friction with model pieces, edge passivation into the airplane, loss of cutting efficiency, and enhance friction. Chopping heat will make the diamond particle floor a thin layer of graphitization, the hardness is significantly decreased, and elevated wear: diamond particle surface is subjected to alternating thermal stress, but additionally to withstand the stress of alternating slicing, there will probably be fatigue crack partially damaged, revealing a pointy new edge, is a perfect wear pattern; giant space of broken: the diamond particles in Qie Ruqie withstand the impact load, the extra outsanding particles and grain consumed prematurely; off: alternating chopping pressure in order that the diamond cutting tools particles in the binder is shaking then trigger loose. At the identical time, the binding agent within the sawing process put on and slicing heat to soften the binder. This makes the holding drive of the binder decreased, when the reducing drive on the particles is greater than the holding drive, the diamond particles will fall off.