供应铬刚玉磨料,铬刚玉,铬钢玉微粉

铬刚玉,铬刚玉磨料,铬钢玉微粉(PA)

PINK FUSED ALUMINA(PA)

铬钢玉，铬刚玉微粉是以氧化铝粉主要原料，适配氧化铬等，经高温熔炼而成。铬刚玉呈粉红色，硬度与白刚玉近似，韧性比白刚玉高。用铬刚玉制造的磨具，耐用度好，磨加工光洁度高。适用于量具、机床主轴、仪表零件、螺纹工件及样板磨等精密磨削。

Its main material is bayer alumina,which is electrically fused in high temperature,being added with the right quantity of oxidized chromium.It is pink.Its hardness is close to,but toughness higher than that of WA.the abrasive toola made of it feature excellent durability and high processing cleanness,which are suitable for the precision grinding of the measuring tools,lathe main shafts,instruments and apparatus parts,threading workpieces and samplers,etc.

铬刚玉磨料化学成分：Chemical composition

化学成分Chemical composition粒度范围Grit size range	低铬Low chromium			中铬Medium chromium			高铬High chromium
化学成分Chemical composition粒度范围Grit size range	AI₂O₃_%	Cr₂O₃ _%	Na₂O _%	AI₂O₃ _%	Cr₂O₃ _%	Na₂O _%	AI₂O₃ _%	Cr₂O₃ _%	Na₂O _%
F12~F80	≥98.50	0.20~0.45	≤0.50	≥98.20	＞0.45~ 1.00	≤0.55	≥97.40	＞1.00~ 2.00	≤0.55
F90~F150	≥98.50		≤0.55	≥98.20		≤0.60	≥97.00		≤0.60
F180~F220	≥98.00		≤0.60	≥97.80		≤0.70	≥96.50		≤0.70

铬刚玉磨料物理性能：Physical property

基本矿物Basic minerals	晶体尺寸Crystal size μm	真比量True density g/cm³	堆积密度Bulk density g/cm³	显微硬度Knoop hardness g/mm²
α— AI₂O₃	600~2000	≥3.90	1.40~1.91	2200~2300

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