DAIDO DMS (THAILAND) CO.,LTD.
Tool steels / Heat treatment / Surface treatment (Nitriding, TD processing and PVD coating)
TD processWe offer TD (VC) treatment for cold pressing, which has excellent resistance to wear, galling, and melting damage. |
 | TD processing applied parts●Drawing punch dies
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Characteristics of TD process (comparison with other coating characteristics)
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Comparison References
| TD | CVD | PVD | |
| Processing method | Thermal reaction, precipitation and diffusion | Thermochemical reactions | Plasma Reaction |
| Coating Layer | VC | Tic,Tin,TinC, etc. | Tin,TiAIN,CrN,DLC, etc. |
| Coating Color | Gray to black | TiC: Silvery white
TiN: Gold | TiN: Gold
TiAIN: Purple to black |
| Coating film hardness [HV] | 3200 to 3700 | TiC：3300-3700 | TiN：2200-2700 |
| Coating thickness [μm] | 6 - 10 | 7 - 10 | 3 - 5 |
| Processing temperature [℃] | 1000 to 1050 | 700 to 1100 | 200 to 600 |
| Dimensional Accuracy | △ | △ | ◎ |
| Adhesion | ◎ | ◎ | ○～◎ |
| Coefficient of kinetic friction | ○～◎ | TiC：◎ TiN：○ | TiN：○ TiAIN：○ |
| Mirror finish | ◎ | ◎ | ○ |
List of TD processing equipment for cold pressing
| Classification | Equipment name | Effective dimensions | Number of units | Maximum heating temperature | Ability |
| Processing furnace | TD (Toyota Diffusion Coating Process) Furnace | Φ400×600 | 2 | 1020℃ | 120Kg/Ch |
| Ancillary Facilities | Preheating Furnace | Φ400×600 | 1 | 850℃ | － |
| Tempering Furnace | Φ400×600 | 2 | 650℃ | － | |
| Cooling system | Φ510×810 | 1 | － | － | |
| Finishing cleaning tank | Φ510×810 | 1 | － | － |
