میکروپودر اکسید آلومینیوم قهوه ای 500#

$780.00 /MT

آلومینا ذوب شده قهوه ای محصولی است که با ذوب تدریجی بوکسیت کلسینه شده در کوره قوس الکتریکی در دمای بالا (تقریباً 2000 درجه سانتیگراد) تولید می شود. ترکیب شیمیایی آن عمدتاً از Al 2 O 3  (94.5-97%) و مقادیر باقیمانده TiO 2 , SiO 2 , Fe 2 O 3 , CaO و MgO تشکیل شده است.

اکسید آلومینیوم قهوه ای با چقرمگی خوب، مقاومت مکانیکی بالا و سختی (9 در مقیاس Mohs) مشخص می شود. ریزسختی مواد به حدود 1900 کیلو گرم بر میلی متر مربع می رسد . وزن مخصوص (چگالی) برابر 3,90+/-0,05 g/cm3 است . چگالی ظاهری بسته به اندازه برابر با 1.52-1.87 گرم بر سانتی متر مکعب است . رسانایی حرارتی نسبتاً بالایی دارد و انبساط حرارتی کمی دارد. در مورد برق یک عایق است.

آلومینا ذوب شده قهوه ای JIS 360#
ترکیب شیمیایی درصد
Al 2 O 3 ≥94.0٪
Fe2O3 ≤0.5٪
در 2 O ≤0.30٪
SiO 2 ≤1.50٪
TiO2 1.5-3.8٪
بالا ≤0.30٪
شاخص فیزیکوشیمیایی
چگالی ظاهری 1.53-1.99g/cm3
تراکم دانه 3.90 گرم بر سانتی متر مکعب
سختی مورس 9

پودرهای اکسید آلومینیوم ذوب شده قهوه ای  مواد کاملی هستند که به طور خاص برای کاربردهای ساینده عمومی در ابزارهای ساینده چسبانده شده و فرآیندهای ساییدن و پرداخت استفاده می شوند. در حالی که اکسید آلومینیوم سختی و ظرفیت سایندگی کمتری نسبت به الماس، کاربید بور و کاربید سیلیکون دارد، اما به طور گسترده برای سنگ زنی مواد آهنی، تکمیل مواد سخت و سخت، پر کردن قطعات سرامیکی زمانی که هزینه پردازش مهم است استفاده می شود.

مورد D0 (یک) D3(um) D50 (یک) D94 (ام)
#240 127 103 57.0±3.0 > 40
#280 112 87 48.0±3.0 >33
#320 98 74 2.5±40.0 27
#360 86 66 2.0±35.0 > 23
#400 75 58 30.0±2.0 20
#500 63 50 25.0±2.0 > 16
#600 <53 41 20.0±1.5 > 13
#700 <45 <37 17.0±1.5 11
#800 <38 <31 14.0±1.0 >9.0
#1000 <32 27 11.5.±1.0 >7.0
#1200 27 <23 9.5±0.8 >5.5
#1500 <23 20 0.6±8.0 >4.5
#2000 19 <17 6.7±0.6 >4.0

 

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