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Pink chromium corundum for grinding wheel emery wheel

Pink chromium corundum 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 tools made of it feature excellent durability and high processing cleanness, which are suitable for the precision grinding of the measuring tolls, lathe main shafts, instruments and apparatus parts, threading work pieces and samplers, etc.

/MT

Pink chromium corundum abrasives     

Pink chromium corundum 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 tools made of it feature excellent durability and high processing cleanness, which are suitable for the precision grinding of the measuring tolls, lathe main shafts, instruments and apparatus parts, threading work pieces and samplers, etc.

Chemical composition

 grit size range

Low chromium

Medium chromium

High chromium

Al2O3
(%)

Cr2O3
(%)

Na2O
(%)

Al2O3
(%)

Cr2O3
(%)

Na2O
(%)

Al2O3
(%)

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

Physical property

Basic minerals

Crystal size
μm

True density
g/cm3

Bulk density
g/ cm3

Knoop hardness
kg/mm2

α-AL2O3

600-2000

≥3.90

1.40-1.95

2200-2300

Pink chromium corundum for grinding wheel emery wheel

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