V-Toku1,V-Toku2

Features

Original V Steel is made from good quality Swedish ores, and its chemical component and structure is most suitable for cutting blades, and the body is well wrought. V-Toku1, and V-Toku2 are excellent cutting alloy steels. They share the basic features of V Steel Series.

  1. Contain fewer impurities.
  2. Heat treatment is easy to apply to.
  3. Have better ductility
  4. Show better workability (fire forging, forgeability)
As for the adjustment of component, hard and fine carbides are formed in the substrate by adding Cr, W, and V(vanadium), and the durability increases. Addition of W (tungsten) brings about high toughness and high strength at elevated temperature. These effects are even more enhanced especially with the addition of Cr(chrome).
Easiness of quenching and improvement of annealing seem to be incompatible, but added Mn and Cr at the precise amount, elicit both full effects. The adjustment of V-Toku 1 and V-Toku 2 is given by the process of hot rolling forging and quenching afterward (spheroidizing by constant temperature quenching).
* Constant temperature quenching is;
Keeping the temperature of the part of the blade which is relevant to S curve, so that the spherodizing proceed continuously in a short time.

Component Standard

C Cr W Mo V Ni
V-Toku1 1.1-1.2 0.2-0.5 2.0-2.5 - 0.2 or lower 0.25 or lower
V-Toku2 1.0-1.1 0.2-0.5 1.0-1.5 - 0.2 or lower 0.25 or lower

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