・A super hard alloy known as “Z-alloy” results in a stroner resistance to blade-wear.

・Due to the difference in wear speed between hard alloy and steel, the blade becomes sharper with further use.

In pursuit of the ideal shape of tiller-blades as they wear down.

To prevent the deterioration in tiller performance resulting from blade wear, we undertook an exhaustive study of the shape of worn-down blades to determine their ideal shape.