棕刚玉

以铝矾土、焦碳（*煤）为主要原料，在电弧炉内经高温冶炼而成，主要化学成分为AL2O3、TiO2环含有少量的SiO2和Fe2O3等，显微硬度HV1800-2200,韧性比SiC高，用它制成的磨具，适于磨削*张较高的金属，如各种通用钢材、可锻铸铁、硬青铜等，也可制造*耐火材料。

棕刚玉的性能

　　物理性能：晶形三方晶系　　化学性质：*　　与酸反应：在****中和****中稍有腐蚀　　与碱反应：仅与强碱热溶液稍有反应　　氧化还原效果：否　　密度：3.90g/cm3硬度：努谱硬度2000-2200Kg/mm2，莫氏硬度9.0　　颜色：深棕色，煅烧后颜色呈深蓝　　熔点：2250C　　****使用温度：1900C　　比热：(Cal/g.C)0.26(20-90C)　　热传导系数室温900C(Cal/cm3.sec.C)　　折光率：e=1.760w=1.768(Naline)　　电阻率：30C300C900C1600C(cm)10161013105104线膨胀系数：7-9(0-1600C)

棕刚玉的使用范围

　　棕刚玉称作工业的牙齿：主要用在耐火材料，砂轮，喷砂。　　1.喷砂棕刚玉——喷砂磨料硬度适中，堆积密度高，无游离二氧化硅，比重大，韧性好，奥凯棕刚玉是理想的“环保”型喷砂材料，广泛应用于铝型材，铜型材玻璃，水洗牛仔服精密模具等领域；　　2.自由研磨——研磨级磨料，应用于显像管、光学玻璃、单晶硅、镜片、钟表用玻璃、水晶玻璃、玉器等领域的自由研磨，是国内普遍采用的*研磨材料；　　3.树脂磨具——磨料具有颜色合适、硬度好、有韧性、合适的颗粒断面类型和刃口保持度，应用于树脂磨具，效果理想；　　4.涂附磨具——磨料是砂纸、纱布等生产厂家的生产原料；　　5.棕刚玉功能性填料——主要用于汽车制动件、****轮胎、****建筑制品等领可作为修筑高速公路路面、飞机跑道、码头、停车场、工业地坪、体育场地等*材料;6.过滤介质——是磨料的新型应用领域，采用粒状磨料作过滤床的底层介质，净化饮用水或废水，是国内外新型的水过滤材料，尤其适用于有色金属选矿、石油钻井泥浆加重剂:7.磨料水力切割——是以磨料作切割介质，依靠高压水力射流进行基本切割，应用于石油（*）管道、钢材等部件的切割，是一种新型、环保、安全的切割方式。客户群：水洗厂牛仔喷砂车间造船厂修船厂钢结构厂微粉厂砂轮厂砂纸，砂布厂水晶玻璃行业建筑地坪业钢铁业五金业电子业汔车制造业海岸码头，停车场医院体育场.喷砂行业等合作满足于各类用户所需地坪骨料和磨料。　　产品可靠，性能稳定，品质优良，使用方便。

其主要功能

　　（1）由于有耐高温、耐腐蚀、高强度等性能，故用浇钢滑动水口冶炼稀*、****合金、陶瓷、炼铁高炉的内衬（墙和管）；理化器皿、火花塞、耐热****涂层。　　（2）由于有硬度大、*性好、强度高的特点，在化工系统中，用做各种反应器皿和管道，化工泵的部件；做机械零部件、各种模具，如拔丝模、挤铅笔芯模嘴等；做刀具、模具磨料、****材料、*关节、密封模环等。　　（3）刚玉保温材料，如刚玉轻质砖、刚玉空心球和纤维制品，广泛应用于各种高温炉窑的炉墙和炉顶，既耐高温又保温。棕刚玉粒度砂是由人工精选棕刚玉块,采用对辊、球磨、巴马克等设备加工而成，粒度由F8-F325.主要用于抛光、研磨、工业磨削等，还可以按客户要求进行水洗、酸洗处理等方法加工，能够满足客户的不同需求。　　低碳棕刚玉经过炉前和特殊工艺的再处理，降低棕刚玉中残余碳的含量，使产品在使用中不粉化、不爆裂、韧性大是磨料磨具行业，耐火材料行业的****原料。主要用于陶瓷磨具、****磨具、有机磨具、砂带、涂附磨具等，　根据残碳含量分为：煅烧棕刚玉C≤0.05%、低碳棕刚玉C≤0.10%、普通棕刚玉C≤0.15%。Brown corundum
In bauxite, coke (anthracite) as the main raw material, high temperature *elting in arc furnace neijing and become, the main chemical com*ition for AL2O3, TiO2 ring contains a *all amou*f SiO2 and Fe2O3, microhardness HV1800-2200, toughness than SiC high, use it made of grinding tool, suitable for grinding tensile higher metal, such as all kinds of general steel, malleable cast iron, hard bronze, etc., can also make advanced refractory material.
Brown corundum performance
Physical properties: crystal shape trigonal system chemical properties: gender and acid reaction: in aqua regia and hydrofluoric acid corrosion and slightly in alkali reaction: only and alkali solution heat slightly reaction oxidation reduction effect: no density: 3.90 g/cm3 hardness: knoop spectrum hardness 2000-2200 Kg/best callus induction, Morse hardness 9.0 color: dark brown, after calcining color showed deep blue melting point: 2250 C highest using temperature: 1900 C heat: (Cal/g. C) 0.26 (20-90 - C) coefficie*f thermal conductivity at room temperature 900 C (Cal/cm3. SEC. C)

It*ain function
(1) with high temperature resistance, corrosion resistance, high strength, such as performance, so use pouring steel slide gate *elting rare metals, special alloy, ceramics, puddlin*ast furnace lining (wall and pipe); Physical and chemical vessels, *rk plug, heat resisting oxidation coating. (2) with hardness, good abrasion resistance, high strength characteristics and the chemical industry system, used for all kinds of reaction vessel and pipe, chemical pump parts; Do mechanical parts, all kinds of mold, such as wire drawing die, crowded pencil refill die nozzle, etc.; Do tool, mould abrasive, bulletproof material, human body joints, seal die ring, etc. (3) corundum thermal insulation material, such as corundum light brick, alumina hollow ball and fibre products, which are widely used in all kinds of high temperature furnaces of furnace wall and roof, already high temperature resistant and heat preservation. Brown fused alumina particle size sand is by artificial selection brown corundum block, adopts the roll, ball mill, and mark equipment processing and become, particle size by F8 - F325. Mainly used for polishin*rinding, industrial grinding, etc., can also according to the guest