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FAQ
Are there any changes due to thermal conductivity?
Thermal conductivity is based on the amount of Co. Lower Co levels lead to higher conductivity.
Generally, higher conductivity means that heat escapes well and frictional heat can be controlled.
Q&A in the same category in this question
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刃物に使われている超硬とは何ですか？
被加工材やその厚みなどによって選択すべき超硬合金の材質は変わりますが、一般的に刃物として使用する場合は、
切れ味重視や、チッピング対策を考えて、タングステンカーバイド（WC）の粒子を細かくした超微粒子超硬合金を
選定することが多くあります。 -
超硬合金の弱点は何ですか？
一般的な鉄合金と比較すると、靱性（ねばり強さ）が低く、刃先が欠けてしまう・剥離するといったような現象が起こることがあります。
また、比重が鉄の約2倍ありますので、重量が重くなることがデメリットとなる場合もあります。 -
Why does the amount of Co and WC particle size affect the thickness of the heat affected layer?
It is thought that when Co is in large quantities the fusing point is lowered, which increases the amount that melts and thickening the damaged layer.
It is also thought that when WC particle size is small, the material becomes easier to melt due to the volume effect, which thickens the damaged layer.
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