金刚砂*地坪材料&天然金刚砂#低价位金刚砂

金刚砂，SiC，学名碳化硅。碳化硅硬度仅次于金刚石、碳化硼和立方氮化硼，在无机材料中排行第四。目前已能通过热压烧结法制得高致密度的碳化硅。它具有很高的强度及良好的****性能，在高温下不变形，可作为高温燃气轮机上的涡轮叶片，也可作*的密封材料，还可作火箭尾喷管的喷嘴及轻质的****用品等。晶胞为面心立方结构，每个晶胞含有4个C原子4个Si原子。与金刚石结构类似。纯的是无色晶体。密度3.06～3.20。硬度很大，大约是莫氏9度。一般的是无色粉状颗粒。磨碎以后，可以作研磨粉，可制擦光纸，又可制磨轮和砥石的摩擦表面。由砂和适量的碳放在电炉中加强热制得。

天然金刚砂又名石榴子石，系硅酸盐类矿物。经过水力分选，机械加工，筛选分级等方法制成的研磨材料。生产使用历史悠久，古代我国就有使用金刚砂研磨水晶玻璃，各种玉石的史例。十九世纪四十年代又远销东洋。分粗目，中目，细目三大类。其中粗目为黑红色，中目为淡红色，细目为红白色，各种目数粒度均匀，颗粒形状均一，成棱叫角晶体，有锋利的边缘，磨削力高。供石材类工业研磨大理石及其它软质材料。玻璃类工业研磨玻璃毛边，电视机显像管，光学器械，镜片，棱镜，钟表用玻璃等。金属类工业喷砂，除锈，研磨。印刷工业研磨胶版，以及轻工业加工塑样，皮革，砂纸等用途。

天然金刚砂的磨削力略低于电炉白刚玉，但其任性强，具有介壳状段口之特性，其优点是磨件的光洁度高，砂痕少而浅。磨面细而均匀，可****产品质量，为本品的*之处。天然金刚砂的研磨时间短，效益*格低廉，可弥补寿命短的不足

Emery, SiC, scientific name of silicon carbide，Silicon carbide hardness only after diamond and boron carbide and cubic boron nitride，In the inorganic materials ranking fourth.The hot pressing method can make high density of silicon carbide now.It has high strength and good oxidation resistance, under high temperature deformation, and can be used for high temperature gas turbine of turbine blade, also can make wear-resisting sealing material, but also can make the rockets tail nozzle nozzle and light bulletproof things, and so on.Cell for face-centered cubic structure, each cell contains 4 C * four Si *s. And diamond structure similar. Pure is a colorles*rystals. Density 3.06 ~ 3.20. Hardness is very big, is about Morse 9 degrees. The general is a colorless powder particles. After grinding, can make the grinding powder, can system polishing paper, but also system wheel and whetstone of fricti*urface. The sand and a moderate amou*f carbon on the furnace of strengthening the thermal system.

The sand and a moderate amou*f carbon on the furnace of strengthening the thermal system.Natural emery and name garnet, is a kind of silicate mineralsFor stone class industrial grinding marble and other soft materials. Glas*lass industrial grindin*lass burrs, TV picture tube, optical instruments, lens, pri*, the clock and watch glass, etc. Metals industry sand, derustin*rinding. Printing industry grinding offset, and light industry processing plastic sample, leather, sand paper pur*es.Natural emery grinding force slightly lower than furnace white corundum, but its willfulness is strong, has the conchoidal section of the characteristics of the mouth, its advantage is grinding pieces of high degree of finish, sand mark fewer but shallow. Grinding surface fine and uniform, can improve the quality of products, for the product unique. Natural emery grinding time is short, high efficiency, low price, which can make up the shortage of the short life.