Abstract
Hair-cutting scissors are professional tools for barbers and hair stylists. Therefore, durability with repeated every day use is needed. It is known from past research that the cutting ability worsens when edge roughness factors Rz and Ra and the edge radius grow. In this report, we seek to find the material characteristics that have a strong relationship with these three values. For Rz, it is known that the influence of the hardness of the material is large. It is desirable to use a hard material to keep the Rz value low. For Ra, it is known that the influence of the size of the wear particles generated when the material is worn out is large. It is desirable to use a material that has a small wear particle to keep the Ra value low. For edge radius, it is known that the influence of abrasion resistance while the scissors are being used is large. It is desirable to use a material with a high abrasion resistance to keep the edge radius value low. A material that has all three of the different characteristics explained above concurrently is desirable for attaining high durability in hair-cutting scissors.
