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微米級(jí)白剛玉F1500是經(jīng)過(guò)酸堿處理和水洗溢流生產(chǎn)的超細(xì)微粉,它也是磨具行業(yè)中常用的研磨原材料之一。特別是固定爐生產(chǎn)的白剛玉磨料具有韌性好,自銳性好,磨削力強(qiáng)的有點(diǎn)。白剛玉的主要成分是α相的氧化鋁,經(jīng)過(guò)2200度高溫熔融以后,硬度和耐火度都大幅度提升。生產(chǎn)的磨具產(chǎn)品研磨時(shí)鋒利度高不易燒傷,磨削效率高。同時(shí),白剛玉的雜質(zhì)含量微乎其微,不會(huì)對(duì)研磨工件造成污染。廣泛用于樹(shù)脂砂輪、陶瓷砂輪、金剛石砂輪等固結(jié)磨具的生產(chǎn)。
Micron grade white fused alumina F1500 is a ultrafine powder produced through acid alkali treatment and water washing overflow. It is also one of the commonly used grinding raw materials in the grinding tool industry. Especially the white alumina abrasive produced in a fixed furnace has good toughness, self sharpening, and strong grinding force. The main components of white corundum are α After melting at a high temperature of 2200 degrees, the hardness and fire resistance of the alumina phase have significantly improved. The grinding tools produced have high sharpness and are not easily burned during grinding, resulting in high grinding efficiency. At the same time, the impurity content of white fused alumina is minimal and will not cause pollution to the ground workpiece. Widely used in the production of bonded grinding tools such as resin grinding wheels, ceramic grinding wheels, diamond grinding wheels, etc.
1. 生產(chǎn)磨具制品用的白剛玉磨料選用純度固定爐白剛玉塊,硬度、堆積密度、韌性優(yōu)于傾倒?fàn)t白剛玉,能提升砂輪的耐磨性,磨削力。
2. 白剛玉的自銳性強(qiáng),在磨削過(guò)程中可不斷產(chǎn)生棱角進(jìn)行研磨,生產(chǎn)出來(lái)的磨具制品鋒利,不會(huì)燒傷工件。
3. 磨具生產(chǎn)用的白剛玉堆積密度高,單位體積內(nèi)可放入更多的磨粒,磨削或切割過(guò)程中有更多的磨料參與工作,可以提高產(chǎn)品的使用壽命。
4. 電熔白剛玉砂的粒度均勻,對(duì)粒徑范圍的控制嚴(yán)格;白剛玉微粉經(jīng)過(guò)酸洗水分工藝生產(chǎn),無(wú)大顆粒,兼顧了表面粗糙度和研磨效率。
5. 磨具生產(chǎn)用的白剛玉顏色白度高,雜質(zhì)少,可添加各種染料制成彩色的砂輪。
6. 白剛玉的鈉含量低,阿爾法轉(zhuǎn)化率高,硬度高。白剛玉的鐵含量可以忽略不計(jì),因而不會(huì)對(duì)磨削工件造成污染或燒傷。制成的砂輪可用于醫(yī)療、食品工業(yè)、航空航天、半導(dǎo)體等領(lǐng)域。
|
白剛玉粒度砂 |
白剛玉微粉 |
AL2O3 |
99.53% |
99.27% |
SiO2 |
0.13% |
0.14% |
NA2O |
0.23% |
0.28% |
Fe2O3 |
0.07% |
0.06% |
CaO |
0.03% |
0.05% |
顏色 |
白色 |
莫氏硬度 |
9.0 |
努普硬度 |
2000 - 2200 Kg/mm2 |
使用溫度 |
1900 ℃ |
熔點(diǎn) |
2250 ℃ |
比重 |
3.95g/cm3 |
體積密度 |
3.6g/cm3 |
堆積密度 |
1.55-1.95 g/cm3 |
比熱 |
0.26 cal/g. ℃(20-90℃) |
導(dǎo)熱系數(shù) |
6.16W/(m·K)(1000℃) |
線膨脹系數(shù) |
8.0×10-6/℃(200-1000℃) |
折射率 |
e=1.760 w=1.768 |
化學(xué)反應(yīng) |
酸性物質(zhì):在王水和氫氟酸中少有腐蝕; |
晶形 |
三方晶系 |
歐標(biāo)微粉型號(hào) | D3(um) | D50(um) | D94(um) |
F230 | <82 | 53.0±3.0 | >34 |
F240 | <70 | 44.5±2.0 | >28 |
F280 | <59 | 36.5±1.5 | >22 |
F320 | <49 | 29.2±1.5 | >16.5 |
F360 | <40 | 22.8±1.5 | >12 |
F400 | <32 | 17.3±1.0 | >8 |
F500 | <25 | 12.8±1.0 | >5 |
F600 | <19 | 9.3±1.0 | >3 |
F800 | <14 | 6.5±1.0 | >2 |
F1000 | <10 | 4.5±0.8 | >1 |
F1200 | <7 | 3.0±0.5 | >1(at 80%) |
F1500 | <5 | 2.0±0.4 | >0.8(at 80%) |
F2000 | <3.5 | 1.2±0.3 | >0.5(at 80%) |
1. 陶瓷砂輪
2. 軸承研磨輪
3. 磨頭
4. 樹(shù)脂砂輪
5. 切割片打磨片
6. 鋼紙砂盤
7. 橡膠砂輪
8. 拋磨塊等
9. 金剛石砂輪的輔料
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