Alphas-V (TD)

ALPHAS-V utilizes the thermal reactive diffusion process and deposits a solid vanadium carbide layer. This process improves the surface property, Anti-Wear, Anti-Galling and Anti-Seizure problems that are primary issues for Tooling industries or Stamping facilities.

ALPHAS-V is internationally known as the Toyota Diffusion Process, or TD process, developed in the Toyota Central Research and Development Lab Inc. in Japan. The superior coating properties of the ALPHAS-V (TD) process have been proven in many different industries for decades, and the TD process still is considered to be the best coating process.

The ALPHAS-V coating process is metallurgically bonded through diffusion and is a tight and strong adhesion to the substrate steel, which offers exceptional flaking resistance. Due to the hardness and thicker deposition, the dense and pure structure, ALPHAS-V provides unparalleled properties and contributes to a significant extension of the lifespan of tools and dies.

Characteristics

Coating	VC- Vanadium Carbide
Hardness	3200-3500 Vickers (Approx. HRC 95-100)
Thickness	4-5µm for cutting, 5-8µm for forming, die casting etc.
Surface	Dense, Non-Porous
Oxidation Temp	Approx 1250°F
Coefficient Friction	0.29 (but it is improved by base roughness)
Adhesive Tendency	Low affinity against other metals

Atoms or ions of carbide constituents dispersed in the salt bath combines with C atoms conained in the substrate; then the carbide layer is formed on the surface of the substrate. Thereafter, the layer is expanded by reaction between C and the carbide constituent on the formed carbide layer and the continuous supply of C atoms from the substrate.

Recommended Substrate Materials for ALPHAS-V (TD)

1. DCMX-Matrix Type Tool Steel distributed by International Mold Steel

Application Data

Cold Forging