What is Martroi?
Kobe Steel's finest materials
material and it
Technology to make use of
When iron is heated, its properties change and it becomes hard and sticky.
This allows it to demonstrate its excellent capabilities as a tool.
The degree of change when heat is applied varies depending on the material, so
First of all, using high quality steel is a very important element for tools.
Many of KEIBA's products use the special steel "Multroi" (CR-V70C chrome vanadium steel or SK7MF2 high carbon tool steel).
Martroy is a high-quality material that we custom order from Kobe Steel, a major steel manufacturer. The carbon content is higher than that of general tool steel, which gives it high hardness and produces excellent sharpness when finished.
However, as metals become harder, they become brittle. Techniques and equipment are required to provide both hardness and tenacity.
First, we use a large air stamp hammer to forge Maltroy, and then we perform a heat treatment called "annealing" to stabilize the structure of the steel. ” and spend 14 hours doing it carefully. This creates sufficient tenacity for hard, premium materials like Martroi.
Note that this annealing process requires large-scale equipment and costs, so some manufacturers do not carry out this process. Additionally, even among manufacturers that do, they generally use a "conveyor type" method that only requires about 4 to 5 hours of heating, with an emphasis on efficiency.
Furthermore, we have our own heat treatment equipment and perform careful quenching and tempering (process of adjusting the hardness of the product by applying heat). This fully brings out the tough properties of steel.
This painstaking process creates a product with a high level of hardness and tenacity. KEIBA's products have been praised for their long-lasting sharpness. The careful and time-consuming manufacturing process leads to such high quality such as high wear resistance and toughness.
