【正文】 h cutting speed increase, scrap/The cutting tool junction plane temperature also is increasing. When has such situation, the TiC coating favors in has the chemical reaction with the iron and softens, more pressures function in anti crescent moon hollow attrition coating. Under these conditions, hoped has one chemical stability better coating, 2 like Al2O3 (although under low speed was inferior to TiC hard or is wearresisting). The chemical stability bees an important performance performance dividing line pared to the resistance to wear the factor, the speed and the temperature is decided in is processed the modular cast iron the crystal grain structure and the performance. But usually thick coating of TiCN and TiC or only ductile iron oxides in the soil coating is applied to, because the today majority of this kinds are processed the material the cutting speed in each minute 150 to 335 meters between. Is higher than each minute 300 meter applications regarding the speed, the people to this kind of material are satisfied. In order to cause this scope performance to be most superior, the mountain high researched and developed and has promoted in view of modular cast iron processing material quality TX150. This kind of material quality has hard also the anti distortion substrate, is very ideal regarding the processing modular cast iron. Its coating the oxide pound coating which hollowly wears by thick very wearresisting carbon titanium nitrides and a thin anti crescent moon, the top is thin layer TiN. This kind of coating which needs the center warm chemistry gas phase deposition using the state of the art production resistance to wear and the anti crescent moon hollow attrition which the CVD coating plete degree of hardness moreover the tough smoothness increases (MTCVD) the craft. Substrate/The coating bination performance gives the very high anti plastic deformation and the cutting edge micro collapses the ability, causes it to bee under the normal speed to process the modular cast iron the ideal material quality. The coating ceramics also display can effectively process the modular cast iron. In the past, the aluminum oxide ceramics application which not the coating tough good such as nitriding silicon and the silicon carbide textile fiber strengthened the work piece material chemistry paralysis limit. Today but could resist the scrap distortion process through the use to have the high thermal coating cutting tool life already remarkably to increase. But certain early this domains work piece processing use aluminum oxides spread the layer crystals to have to strengthen the ceramics, today most research concentrate in the TiN coating nitriding silicon. This kind of coating can remarkably open up the tough good ceramics the application scope. When machining, the work piece has processed the surface is depends upon the cutting tool and the work piece makes the relative motion to to the surface method of formation, the machining may divide into the knife point path law, the formed cutting tool law, the generating process three kinds. The knife point path law is depends upon the knife point to be opposite in the work piece surface path, obtains the superficial geometry shape which the work piece requests, like the turning outer annulus, the shaping plane, the grinding outer annulus, with the profile turning forming surface and so on, the knife point path are decided the cutting tool and the work piece 3 relative motion which provides in the engine bed。 The formed cutting tool law abbreviation forming, is with the formed cutting tool which matches with the work piece final superficial outline, or the formed grinding wheel and so on processes the formed surface, like formed turning, formed milling and form grinding and so on, because forms the cutting tool the manufacture quite to be difficult, therefore only uses in processing the short formed surface generally。 At the beginning of 20th century, machining precision Gao Yida millimeter。s, the machining precision has reached a micron level。s, the machining precision enhances to micron. The influence machining quality primary factor has aspects and so on engine bed, cutting tool, jig, work piece semifinished materials, technique and processing improve the machining quality, must take the suitable measure to the above various aspects, like reduces the engine bed work error, selects the cutting tool correctly, improves the semifinished materials quality, the reasonable arrangement craft, the improvement environmental condition and so on. Enhances the cutting specifications to enhance the material excision rate, is enhances the machining efficiency the essential monly used highly effective machining method has the highspeed cutting, the force cutting, the plasma arc heating cuts and vibrates the cutting and so on. The grinding speed is called the highspeed grinding in 45 meters/second above the highspeed cutting (or grinding) both may enhance the efficiency, and may reduce the surface highspeed cutting (or grinding) requests the engine bed to have the high speed, the high rigidity, the high efficiency and the vibrationproof good craft system。 The shorting is processes the surface to be fo