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Situation Analysis of ceramic tool technology – ceramic cutting tools, cutting tools – Hardware Industry

Ceramics Tools Very suitable for machining hardened steel, heat-resistant alloy or high-temperature alloys. Operator is often incorrectly carbide processing method adopted, they need to solve this “Carbide complex,” and consider the special requirements of ceramic cutting tools: materials selection process right under the blade shape and Machine tool , Arbor And fixture rigidity.

Carbide processing temperature is the main enemy, therefore, most operators will reduce the cutting speed and feed rate increases, when the Qing bad situation will further reduce the spindle speed. But the most appropriate way of precisely processing carbide ceramic cutting tools in the most taboo! Ceramic cutting tools because most of the problems encountered are due to lack of cutting speed and feed rate caused excessive.

The role of high temperature ceramics is different from the carbide. In the cutting process the material being cut before the knife in the face of the cutting tool being pushed away from the area, cutting heat accumulation in this area also. With the increase of cutting speed, cut the heat generated by the region can not be a litter in a short time away, so that it will form a high temperature and produce softening.

Green leaf blades and special porcelain Arbor

Alloy melting point is about 1199 , high temperature is likely to result carbide insert substrate deformation and damage. So often you can reduce the cutting speed carbide blades ensure a reasonable life. The high melting point ceramics 1999 , therefore, high-speed processing of high temperature ceramic blade produced more profitable. Ceramic blade of the most suitable cutting speed is much higher than the speed of carbide inserts, high-speed cutting will generate high-temperature effects are processed material softening, thus greatly reducing the resistance to cutting. Therefore, under the same conditions relative to the carbide blade selection is more fragile ceramic blades, carbide blades can easily achieve the same cutting performance. Sometimes the use of ceramic tool material removal rate can be several hundred feet per minute, from up to several thousand feet per minute.

Suitable cutting speed and feed rate with a cut will create an ideal area for ceramic blade environment. But the lower tool spindle speed will produce sparks – leading to the failure of blades and tools.

Ceramic blade material, coating or coating, are based on silicon nitride or aluminum oxide matrix. Silicon nitride based ceramic cutting tools usually the mother has good toughness, more applicable to malleable iron, ductile iron, and other difficult to machine cast iron and high hardness alloys, milling rough. With silicon nitride based ceramic cutting tools for the home is suitable for processing in addition to cast iron but also for processing of steel hardness less than HRC65 material that can be used in turning roll and the speed is too low and can not be used because of whisker reinforced ceramic high-temperature alloy processing. In the cast iron lathe, milling machining, 1524m/min surface speed can be the most economical tool life.

To home base for the alumina ceramic has good wear resistance, hardness, is the most economical tool material, but it should be used intermittently to avoid the collision or the processing of high hardness materials. Alumina-based ceramics are used for gray cast iron finishing and finishing the half. The high compressive strength of this material makes it suitable for machining cast iron bore. However, as the mother of alumina-based ceramics are relatively poor thermal shock resistance, and thus not suitable for use in processing coolant.

New with silicon carbide (SiC) single crystal, or whisker reinforced alumina based ceramics with high melting point home, high strength and good chemical stability, abrasion resistance and thermal shock resistance. Whisker increased Fracture resistance of ceramic materials strength.

Whisker reinforced ceramic film on cemented carbide inserts as little appeared as destructive of traditional instant rupture or damage, usually whisker reinforced ceramic blade will only damage in a predictable pattern is gradually worn. Ceramic processing high nickel alloy, the interface temperature can reach 982 , the material removal rate can reach more than 10 times Carbide Tool. Whisker reinforced ceramic of high strength makes it very suitable for intermittent vehicle, milling and die / Mold Processing.
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