concrete cutting blades Define the knife

Define the knife in everyday life is just a tool to use the class metal cutting wheels‍ collectively, the use of paper cutting, paper thin edge past we have used snapping folded cropping, also through the blade like the crop tool to paper , and the many ways and tools have been replaced by a proprietary cutter tool, which is knife. The paper cutter for cutting through the metal, the metal edge is not sharp, but the use of such mechanical tight engagement when the metal sheet is cut force. 

Cutter marked scale, cutting different sizes of paper used, some equipped with vernier on the knife, cutting the time to measure the size convenient to use. 

Some called the name of knife cutter or cut stainless steel cutting discs‍ cardboard, stationery in some domestic manufacturers have more than a sale of such goods, such as Jie Lisi, effective ...... and so on.

LEMAN concrete cutting wheels Cut pieces belonging wheel

Cut pieces belonging wheel, abrasive and binder resins made ​​for ordinary steel, stainless steel sheet metal and nonmetal materials.Made of glass fiber reinforced resin depressed center cutting wheel‍ material combined with high tensile, impact and flexural strength, widely used in ordinary steel, stainless steel and non-metallic materials production, the excellent material, exquisite craftsmanship ensures that different materials high cutting efficiency of the workpiece and the best economic results.Cut pieces according to the material is divided into fiber resin cutting discs and diamond cutting discs. 

1 resin cutting discs are resin binder, combined with a variety of materials, for alloy steel, stainless steel and other difficult cutting material, cutting performance is particularly significant. Cut off wheel‍ Dry cutting ﹑ wet two ways to make a more stable cutting accuracy while cutting sheet material and hardness of choice, can greatly improve your cutting efficiency, saving you the cost of production. 

2 diamond cutting disc is a cutting tool that is widely used in the processing of stone, concrete, precast panels, new and old road, ceramics and other brittle materials, diamond cutting discs mainly consists of two parts; .. substrate and the substrate is glued head Results of the tip portion of the main support, while the head is cut from the part during use, and, in use, the tip will be consumed continuously while the substrate is not, the blade is concrete cutting blades‍ able to cut the role played because it contains diamond, diamond as the most rigid material, which is cut in the head of the object to be processed friction while diamond particles [1] by the metal particles inside the wrapped head.

concrete cutting discs diamond grinding wheel

Alias ​​"diamond grinding wheel, 1A1 parallel ceramic diamond wheel." A flat cutting disc‍ ceramic bond diamond wheel are currently widely used in diamond processing, thus also the name comes from. For natural diamond polishing, it can replace the polycrystalline diamond (PDC), processing of diamonds. And having common characteristics of vitrified bond diamond, compared with ordinary alumina, silicon carbide abrasive, grinding it strong, relatively low temperature grinding, abrasive wear is small; various effects can be adapted to the cooling fluid; grinding abrasive shape retention, high precision grind the workpiece; has more holes in the abrasive conducive chip and cooling grinding, clogging, easy to burn the workpiece; self-sharpening abrasive better, longer interval trimming, trimming easier. So vitrified diamond abrasive in the growing depressed center cutting wheel‍ use of some foreign countries. Common granularity: D20 D40 D60 325/400

concrete cutting discs Granularity

Refers to the abrasive particle size, particle size marker used. metal grinding disc‍ According to the requirements of abrasive used, the use of sieving and water into the legal system selected a variety of different thickness granularity. Coarse particle size 40μm, multi-use screening method, according to their size into 25 granularity, denoted as: 

Narrow range: 16/18 to 325/400 width range: 16/20 to 60/80 

Each particle size range of basic grains group size ranges, each basic particle swarm is two adjacent mesh sieve to determine the nominal size. Of fine particle size of 40μm, the use concrete cutting wheels‍ of sedimentation. Different size for different machining accuracy and roughness.

concrete cutting blades Concentration

The unique characteristics of superhard abrasive. A diamond grinding wheel, for example, it refers to the percentage of the corresponding wheel of the diamond flat cutting disc‍ layer included in each cubic centimeter volume of diamond quality. The concentration of diamond abrasive is 100% base value equal to 0.88g/cm3 (4.4 克拉 / cm3); When the diamond when the density is 3.52 g/cm3, (CBN density of 3.47 g/cm3), this value corresponds to the volume of 25%, all other concentrations were calculated this ratio shown in Table 1. 

Volume percent concentration in a simple linear relationship: 

V = 0.88c / γ where: 

V - volume, cm3; 

c - concentration,%; 

γ - abrasive density (generally the diamond concrete cutting blades‍ is 3.52g/cm3, CBN is 3.47g/cm3). 

The density of the diamond into the formula, V (%) is the concentration c (%) of l / 4, i.e., 

V = 0.25c‍

concrete cutting discs cubic boron nitride

Tool CBN (cubic boron nitride) abrasives as raw materials, namely a metal powder, a resin powder, ceramic and metal plating as binder, into various shaped articles, for concrete cutting wheels‍ grinding, polishing, grinding, called CBN abrasive .

CBN abrasive structure 

CBN (cubic boron nitride) grinding the general structure of the operating layer, the substrate, the buffer layer consists of three parts. 

CBN layer known as a working layer, the abrasive, binders and fillers, is abrasive working portion. The buffer layer is also called non-CBN layer of binding agent, and a filler metal powder is firmly attached to the part of the base layer of the CBN. 

The base is machined from aluminum, steel or flat cutting disc‍ made ​​of bakelite, supporting work from abrasive layer and the role of chucking.

LEMAN concrete cutting wheels good grinding performance, good surface quality

Since the CBN abrasive grains can maintain long-term micro-edge sharpness, will be processed workpiece machining accuracy and surface roughness values ​​have reached concrete cutting blades‍ more satisfactory results, and therefore can improve the durability of the workpiece 10% -30% . So even if the batch processing of the workpiece, the shape will always get higher accuracy and consistency. CBN grinding wheel to achieve high dimensional accuracy and low surface roughness, surface cracks and burns easily, a small residual stress. Improved surface quality, generally no cracks, not burned, and the residual stress can be obtained, significantly improve the fatigue strength of the workpiece, generally, the durability of the workpiece to be ground can be increased by 30-50%. 

6, wear resistance, long life 

CBN grinding wheel ratio up to 3500-5500, a hundred times higher than normal corundum grinding wheels, diamond grinding higher than 3-5 times. 

7, environmental pollution, energy saving 

Without too much powder dust. 

8, high efficiency, good overall economic concrete cutting wheels‍ efficiency 

Grinding sharp, small grinding force, CBN grinding wheel dressing long period, less the amount of dressing, long replacement time; long life cycle, grinding ratio, getting a better economy, use good shape retention, without regular Replace the wheel and wheel dressing, saving time and improving working conditions conducive to machining operations. 

CBN is not suitable for grinding hard alloy and non-metallic materials. Grinding at a high temperature, CBN case of alkaline aqueous chemical reaction occurs, CBN wheel at 300 ℃ alkaline solution are decomposed in boiling water can trace decomposition results crystalline grains will be destroyed, so the grinding only use oil-based coolant, not water-based coolant.‍