抛光金刚砂polishing emery
棕刚玉是以铝矾土、焦碳(*煤)为主要原料，在电孤炉内经高温冶炼而成，主要化学成份属AL2O3，TIO2还含有少量的SiO2和Fe2O3等，显微硬度HVl800-2200，韧性比SiC高，用它制成的磨具，适于磨削*张较高的金属也用于研磨玻璃制品制品，工业除锈及水切割等o（1）对硅片、光学镜头 、精密仪器仪表、抛光玻壳、玻璃器皿、陶瓷石料、皮革、 塑料、金属机件能****光洁度,（2）可喷砂切割，是制造砂轮、油石、砂布、砂的必须原料；（3）可作为修筑高速公路路面、飞机跑道、*橡胶、工业地坪.防滑油漆等尚佳的*材料；（4）可作化工、石油、制药、水处理过滤的介质和钻井泥浆加重剂；（5）对电镀、*的防护具有良好的效果。 (6) 是水洗厂牛仔服喷砂车间用砂.水切割行业****的配砂o
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%。
产品名称 | 规格型号 | 主要指标 | 密度 | 外观 | 用途 | 包装 | ||
AL203 | Fe2O3 | SiO2 | ||||||
棕刚玉 | * | ≥95 | ≤0.3 | ≤1.5 | 3.85 | 棕红色颗粒 | 耐火材料，精抛 | 25KG/袋 |
次* | ≥90 | ≤0.3 | ≤1.5 | 3.85 | 黑色颗粒 灰色粉状 | 抛光，研磨 | 25KG/袋 | |
二级 | ≥85 | ≤0.3 | ≤1.5 | 3.85 | 黑色颗粒 | 研磨、砂轮，切割片，喷砂 | 25KG/袋 | |
次二级 | ≥80 | ≤0.3 | ≤1.5 | 3.85 | 黑色颗粒 | 抛光，研磨 | 25KG/袋 | |
三级 | ≥70 | ≤0.3 | ≤1.5 | 3.85 | 黑色颗粒 | 地坪 | 25KG/袋 |
F为固结磨具及喷砂用规格P为涂附磨具用规格W为微粉，320#即W40
常用规格：磨料磨具F1#-63#4#—80#90#—150#180#—240#；段砂0-1mm，1-3mm，3-5mm5-8mm，8-12mm25-0mm10-0mm50-0mm30-0mm；细粉180#-0，200#-0320#-0
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努谱硬度2000-2200Kg/mm2莫氏硬度9.0颜色深棕色煅烧后颜色深蓝熔点2250C****使用温度1900C
用途：用它制成的磨具，适于磨削*张强度较高的金属，如各种通用钢材、可锻铸铁、硬青铜等。也可制造*耐火材料。
棕刚玉化学成份GB/T2478-1996 | ||
粒度范围 | 化学成份％（按重量百分比） | |
Al2O3 | TiO2 | |
4#-90# | 94.50-97.00 | 1.50-3.80 |
100#-180# | ≥93.50 | 1.50-3.80 |
220#-240# | ≥92.50 | 1.50-3.80 |
sic
Black, frangible and sharp, good thermal conductivity and electric conductivity.
Microco*ic shape is a hexagonal crystal, Mohs hardness is 9.2., Vickers hardness is 3000-3300 kg/mm, microhardness is 3000-3300kg/mm3. Among abrasives, silicon carbide’s hardness is higher than corundum, and ranked below diamond, CBN and boron carbide. Density generally viewed is 3.20g/ mm3 , density of heap is 1.2-1.6g/ mm3 , specific gr*ity is 3.20~3.25. Raw material of green silicon carbide are petroleum coke and quality silic*and, appended with salt, then *elt in electric arc furnace. Compared with green silicon carbide, the purity, hardness and brittleness of black silicon carbide are lower .
Main applicati*: solar wafer, semiconductor wafer and quartz chip wire sawing and lapping; bonded and coated abrasive tools; stone polishing; processing metal and non-ferrou*etal with low tensile strength, such as gray pig iron, brass, aluminum, stone, leather and ru*er.
Particle size comparison of commonly used abrasive
Particle size distribution (micron) | Chemical Index | Physical Index | |||||||
Size | D3 | D50 | D94 | SiC ≥(%) | Fe2O3≤(%) | F•C ≤(%) | PHValue | Density of heap | Magnetic Materials≤(%) |
GC#800 | ≤20.0 | 14.0&plu*n;1.0 | ≥9.0 | 99.00 | 0.20 | 0.2 | 6--8 | 1.18 | 0.008 |
GC#1000 | ≤18.3 | 11.5&plu*n;1.0 | ≥7.0 | 98.50 | 0.20 | 0.2 | 6--8 | 1.15 | 0.008 |
GC#1200 | ≤17.5 | 9.5&plu*n;0.8 | ≥5.5 | 98.50 | 0.20 | 0.2 | 6--8 | 1.13 | 0.005 |
GC#1500 | ≤14.5 | 8.0&plu*n;0.6 | ≥4.5 | 98.00 | 0.20 | 0.2 | 6--8 | 1.12 | 0.005 |
GC#1800 | ≤13.5 | 7.0&plu*n;0.6 | ≥4.2 | 98.00 | 0.20 | 0.2 | 6--8 | 1.05 | 0.005 |
GC#2000 | ≤13.0 | 6.7&plu*n;0.6 | ≥4.0 | 98.00 | 0.20 | 0.2 | 6--8 | 1.00 | 0.005 |
Brownfusedalumina oxide
BrownFusedAluminai*ademainlyfrombauxite,carbonmaterialsandironfilings,*eltingbyhightempeturesinelectric*rkfurances.BrownfusedauminaisthemainchemicalingredientAl2O3,itscontentisbetween94.5%and97%,andtheothercontaininga*allamou*fFe,Si,Tiandsoon.It*icro-hardnessisHV1800-2200.ItstenacityishigherthanthatofSiC.
Characteristics:
1highhardness,goodtoughness
2goodgrinding,hightemperatureresistance
3Corrosion-resistance,highstrength,highhardnessandwear-resistance
Application:
BrownFusedAluminaisatough,sharpabrasiveswhichishighlysuitableforgrindingmetalsofhightensilestrength.Itsthermalpropertie*akeitanexcellentmaterialforuseinthemanufactureofrefractoryproducts.Thi*aterialisalsousedinotherapplicati*likeblastingandsurfacehardening.
GRAINSIZED*AILABLE
F6,F8,F10,F12,F14,F16,F20,F24,F30,F36,F40,F46,F54,F60,F70,F80,F90,F100,F120,F150,F180andF220
PhysicalProperties
PhysicalProperties | ||
Property | Unit | value |
Hardness | MohsScale | 9min |
Hardness | KnoopScale(kg/mm2) | 2100 |
Specificgr*ity | g/cm3 | 3.85 |
ChemicalProperties
ChemicalCom*ition | |||
C*tituent | Value | C*tituent | Value |
Al2O3 | 95.35% | Fe2O3 | 0.36% |
TiO2 | 2.73% | CaO | 0.78% |
SiO2 | 0.78% |
