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Abrasive

Abrasives

Though both natural and man-made abrasives were used , nowadays all grinding wheels are made of man-made abrasives.

Type of abrasives and applications

  Abrasives Applications
Aluminum oxide
Al2O3
A、57A For hand-held grinding and manually guided grinding common steels and precision grinding unhardened alloy steels
SHA、68A、ZS、ZF、ZN For hand-held grinding and manually guided grinding, and high pressure grinding various steels and iron.
Z300 For surface grinding austenite-stainless steels
STA、76A For high pressure grinding stainless steels
WA、38A For precision grinding hardened steels
RA、PW、85A、DA、32A、80A For grinding hardened steels, such as alloy steels, high speed steels, and special cast iron, etc.
16A、19A、23A、35A For precision grinding
SG、SGF、TG、SGX、TGX For precision grinding with great grinding performance
Silicon carbide
SiC
C、37C For grinding non-ferrous metal, non-metal (such as rubber, and plastic), and cast iron
GC、39C For grinding tungsten carbide, non-ferrous metal, non-metal, and cast iron.

Abrasive Grains image

Superabrasive

Diamond abrasive, covalent crystallized carbon, is the hardest substance found in nature and has high thermal conductivity. For industrial purposes, nearly 100 % diamond is synthetic diamond.
CBN (Cubic Boron Nitride), composed of Boron and Nitride, is a man-made substance having the second hardness and superior thermal conductivity like diamond, and thermally stable.

Abrasive Bond type Marking Features Characteristics
DIA Vitrified SD Friable, and free-cutting abrasive Knoop hardness = Approx. 7000. Applicable to non-ferrous metals, and ceramics, etc.
MD Tough and durable abrasive
Resinoid SD Free-cutting abrasive
ASD More durable abrasive than SD, and commonly used.
A3D Free-cutting abrasive for ceramics and cermet
AMD Tough and durable abrasive. Applicable to grinding of bimetals (Tungsten carbide & Steel (≧33%)).
Metal M3D Free-cutting abrasive
M4D Tough abrasive with irregular shapes
M5D Tough and durable abrasive for non-ferrous metal grinding.
Electroplated PD Free-cutting and commonly used abrasive
Metal single layer MD Free-cutting and commonly used abrasive
M4D Tough abrasive with irregular shapes
M5D Tough and durable abrasive for non-ferrous metal grinding.
Category Binder KGW code Features Characteristics
CBN Vitrified B Friable abrasive Knoop hardness = Approx. 4700. Applicable to steels and iron.
11B Free-cutting and durable abrasive. This abrasive is fractured along cleavage planes.
13B Free-cutting and more durable abrasive. This abrasive is fractured along cleavage planes.
15B Blocky-shaped, tough, and durable abrasive in high metal removal rate application.
Resinoid B Free-cutting abrasive
CB More durable abrasive than B, and commonly used.
C5B Tough and durable abrasive for heavy grinding
Electroplated B Free-cutting abrasive
3B More durable abrasive than B, and commonly used.
Metal single layer B Free-cutting and durable abrasive
5B Tough and durable abrasive for heavy grinding

Super abrasive grains image