Machinable ceramics MACRE ㊣ is a kind of polycrystalline compound materials, mainly on synthetic mica microcrystal phase of microcrystalline glass. The material also known as microcrystalline glass ceramics. The material color white, compact structure. Microcrystalline volume accounted for more than 50% of the total volume, microcrystalline particles between the five argument - 20 mu. It is a new material of seventy s, a series of excellent features, has a wide range of USES. Machinable ceramics has high mechanical strength, excellent dielectric properties and thermal properties, good chemical stability. The most prominent feature of machinable ceramics are good machinability. It can use general metal processing equipment for cars, milling, planing, sawing, grinding, cutting, tapping and other processed into various parts of the complex shape, and can achieve high machining accuracy.