LEMAN metal cutting discs Appearance Classification

A continuous edge blade: Continuous serrated diamond saw, generally produced by sintering method, commonly used as a basis for bronze binder matrix material, cutting water stainless steel cutting discs‍ to be added to ensure that the effect of cutting and a laser head cutting kinds of useful gap. 

2, blade-type blade: serrated disconnected, cutting speed, suitable for dry and wet cutting methods. 

3, turbine-type blade: 1,2 combines the advantages of the previous two, the sawtooth-like uniform continuous presence turbo punch, improved cutting speed and increase service life. 

Diamond saw blade, constant blade sharp pebbles, Heng Rui concrete saw blades, diamond sculptured piece, slotted diamond, diamond-cut wall pieces, diamond cut pile piece, Songshan cobblestone saw blades, concrete saw blades Songshan

Different materials selection of different types of diamond saw blades, different powder formulations for different material properties, the quality of materials and products, effects, and even the costs and benefits of the pass rate direct impact. 

Factors affecting the efficiency and life of saw flat cutting disc‍ blade has a particle size, concentration, binding agent, and the hardness of the diamond sawing process parameters and the like. It has a blade cutting parameters line speed, concentration and cutting feed rate.

stainless steel cutting discs Blade speed

In practice, the line speed diamond saw blade is restricted flat cutting disc‍ equipment conditions, the quality and the cutting blade stone before nature. From the best blade life and cutting efficiency, the linear velocity of the blade should be selected according to the different nature of the stone. When cutting granite, the blade may be within the selected line speed 25m ~ 35m / s range. For high quartz content and difficult cutting granite, remove the blade line speed limit is appropriate. In the production of granite tiles, using a diamond saw blade smaller diameter, the stainless steel cutting discs‍ line speed up to 35m / s. 

flat cutting disc Cutting depth

Cutting depth is involved in diamond wear, effectively sawing, abrasive cutting disc‍ saw the forces and vital parameters were sawing stone by nature. In general, when a high line speed diamond saw blade should be selected for cutting of small depth, from the current technology, the cutting depth of the diamond can choose between 1mm ~ 10mm. Usually large diameter saw blade when cutting granite blocks, cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time. When a large diamond saw blade line speed, you should select a large depth of cut. But in performance and tool strength saw the extent permitted, should try to take a greater flat cutting disc‍ concentration of cutting cutting to improve cutting efficiency. When the surface of the processing requirements of a small depth of cut should be used. 

LEMAN metal cutting discs Feed speed

Stone cutting feed rate i.e. feed rate. Its size affect the flat cutting disc‍ rate of cutting, the blade and the cutting force by the heat dissipation area. Its value should be based on the nature of the stone sawing selected. In general, cutting softer stone, such as marble, may be appropriate to increase the feed rate, if the feed rate is too low, more conducive to improving cutting rates. Sawing fine structure, relatively homogeneous granite, may be appropriate to increase the feed rate, if the feed rate is too low, diamond blade easily be polished. But while sawing UNEVEN coarse structure of granite, feed rate should be reduced, otherwise it will cause the blade vibration resulting in reduced fragmentation abrasive cutting disc‍ diamond cutting rates. Sawing granite feed speed is generally within the range of the selected 9m ~ 12m/min.

stainless steel cutting discs Life and sharpness

When the diamond concentration changes from low to high, stainless steel cutting discs‍ the blade sharpness and cutting efficiency decreased, leaving life gradually extended, but the concentration is too high, the blade becomes blunt. The use of a low concentration, the efficiency is improved. Therefore, the diamond blade manufacturing process of manufacturing, according to the type of object and with the machine cutting, flat cutting disc‍ diamond concentration reasonable control, so that the diamond in use underutilized.

flat cutting disc Granularity

The diamond particle size in the common range of 30/35 to 60/80. The more hard rock, should be selected with a finer granularity. Because under the same pressure conditions, stone cutting disc‍ the more detailed the more diamond sharp cut in favor of hard rock. Further, the general requirements of a large-diameter blade cutting efficiency high, the particle size should be selected with a thick, such as 30/40, 40/50; lower small-diameter blade cutting efficiency requirements sectional smooth rock cutting, should to a smaller particle size, such as 50/60, 60/80. 

Segment concentration 

The so-called diamond concentration, refers to the density distribution in the working layer of diamond carcass (ie, the weight of the diamond contained within the unit area). "Norms" provides work every cubic centimeter carcass containing 4.4 karats of diamonds, its concentration was 100%, with 3.3 karats of diamonds, its concentration was 75%. Represents the volume concentration of the volume occupied by the number of diamond flat cutting disc‍ agglomerates, and that, where a concentration of 1/4 volume of the total volume of diamond is 100%. Increasing the concentration of diamond is expected to prolong the life of the blade, i.e., reduced because of the increased average concentration of each piece of diamond cutting forces suffered. However, increasing the concentration will increase the cost of the blade, the most economical and thus there is a concentration, and the concentration increases with increasing cutting rate. 

Blade hardness 

Generally, the higher the hardness binding agents, the stronger its wear resistance. Thus, when a large rock cutting abrasive, hardness should be high binding agent; when cutting soft rock material, the hardness of the binding agent should be low; grinding when cutting large and hard rock, the stainless steel cutting discs‍ binding agent should be moderate hardness .

LEMAN metal cutting discs Effect Diamond saw blades i

Diamond saw blades in the process of cutting stone, will be alternating load of centrifugal force, cutting power, cutting fever. 

As the force and temperature effects caused by flat cutting disc‍ diamond saw blade grinding damage. 

Force effect: the cutting process, the saw blade to be subjected to an axial force and tangential force. Because of the force acting radially and in the circumferential direction, so that the wavy blade axially, radially dish-shaped. Both can cause deformation of the rock section is not straight, stone waste more time sawing noise, vibration intensified, resulting in diamond caking early damage, reduce blade life. 

Temperature effect: the traditional theory: the effect of temperature on the blade process mainly manifested in two aspects: First, cause agglomeration of diamond graphite; Second, abrasive cutting disc‍ the thermal stress caused by diamond and diamond particles resulting from the carcass off prematurely. New research indicates that: the heat generated during the cutting process the incoming primary agglomerates. Arc temperature is not high, generally between 40 ~ 120 ℃. The abrasive grinding points, but a higher temperature, generally between 250 ~ 700 ℃. The average temperature of the coolant only reduce the arc zone, the temperature of the grains was less affected. Such temperature does not result in charring of graphite, but will occur between the abrasive friction properties and the workpiece changes, and to thermal stress between diamond and additives, which led to a fundamental change occurred diamond failure stone cutting disc‍ mechanisms. Research shows that the temperature effect is to make the maximum blade breakage factors.

stainless steel cutting discs Grinding damage

Grinding damage: As compared with the force and temperature effects should, after a period of use the blade tends to produce grinding damage. Mill damaged form are metal cutting discs‍ the following: abrasive wear, local crushing, crushing a large area, off, binders direction along the cutting speed mechanical abrasion. Abrasive wear: style pieces of diamond particles with constant friction, passivated edges into a flat, losing cutting, increasing friction. Heat causes the cutting of the diamond particles of the surface of a thin layer of graphite, the hardness greatly reduced, increased wear: the surface of the diamond particles exposed to alternating thermal stresses, and also to withstand the stress of alternating cutting, fatigue cracks occur locally broken, revealing a sharp new edge, is an ideal wear patterns; large area of ​​broken: to withstand shock loads when the diamond particles in the Leads, the more prominent grains and grain prematurely consumed; shedding: alternating the diamond cutting force binder particles are constantly shaking and loosening. Meanwhile, the wear and heat cutting the binding agent during the sawing itself soften the bonding agent. This gripping force of the bonding agent is decreased, the cutting force when the gripping force is greater than the particles, the diamond particles will fall off. No matter what kind flat cutting disc‍ of wear and tear are closely related to the diamond particles bear the load and temperature. Both of which depend on the sawing process and cooling lubrication conditions.

flat cutting disc Manufacturing method

With the rapid development of the automotive, aviation and aerospace technology, material properties stainless steel cutting discs‍ and processing technology for increasing demand. New materials such as carbon fiber reinforced plastic, particulate reinforced metal matrix composites (PRMMC) and ceramic materials are widely used. These materials have high strength, good wear resistance, low coefficient of thermal expansion characteristics which are determined when the machining tool life is very short. Development of new wear-resistant and stable superhard cutting tool is the subject of many universities, research institutes and enterprises of the study. Diamond set mechanical, optical, thermal, acoustic, optical, and many other excellent performance in one, with a high hardness, low coefficient of friction, high thermal metal cutting discs‍ conductivity, thermal expansion coefficient and chemical inertness low, is an ideal material for the manufacture of the tool. In this paper, the development of a method of manufacturing diamond tools in recent years, an overview.

Process characteristics CBN abrasive hardness higher than normal

CBN abrasive hardness higher than normal. High hardness means cutting stronger, sharper; CBN has a high abrasion resistance, meaning it harder than normal abrasive wear; stainless steel cutting discs‍ ability to maintain the shape of the CBN abrasive as one of the main characteristics of high-performance abrasives; CBN's high compressive strength, which means that when used under harsh conditions it can remain intact and not broken particles; CBN has good thermal conductivity can be achieved when grinding cold cuts. 

1, high hardness, high toughness 

High hardness, high toughness cubic boron nitride (CBN) is a human synthesis of superhard material hardness only to diamond is much higher than ordinary corundum and silicon carbide abrasive, so it has a better cutting ability, sharper 

2, high temperature, thermal stability 

CBN can withstand 1250-1350 degrees Celsius, higher than 800 degrees Celsius heat resistance of diamond; during grinding and cutting ferrous materials, sticky crumbs phenomenon construction cutting blades‍ does not occur in the grinding hardened steel, high vanadium high speed steel, aluminum and other high-speed steel grinding temperature is more sensitive to the metal material is the best wheel. 

3, the chemical inertness 

CBN is not easy and the iron group elements produce a chemical reaction, so for a variety of high-speed steel, tool steel, tool steel, high alloy hardened steel, chrome steel, nickel alloys, powder metallurgy steels and high temperature alloys such as high temperature, high hardness grinding of materials of low thermal conductivity is very suitable. 

4, good thermal conductivity 

CBN grinding wheel corundum thermal conductivity up to several hundred times, and thus able to quickly export grinding heat, reduce the thermal deformation of the workpiece. The low thermal conductivity of the material is very suitable for grinding. Various spray (welding) Material: nickel-based, grinding wheels‍ iron-based, etc.; cast iron type material: vanadium - titanium cast iron, high-phosphorus iron, chilled cast iron, etc.; titanium: such TC4 and so on.