Abrasive
Abrasive
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 | 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. |
A
WA
RA
C
SG
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 |
