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Material of lathe tools should have properties

Lathe tools for turning having a cutting portion of the tool. Working part is to produce tools and processing chip parts, including blades, the chips broken off or rolled structural elements of the structure, the storage capacity of the chip or chip space, cutting fluid passage and the like.
  
Lathe cutting tool portion at work is subjected to greater force and high cutting temperatures and friction, shock and vibration. Therefore, Material of lathe tools should have the following properties:
1. The hardness of tool material should have the basic features. Tool material hardness than the hardness of the material processed, the general hardness at room temperature shall HRC60 above;
2. The ability to resist abrasion that is material wear, is a comprehensive reflection of the mechanical properties, structure and chemical properties of the tool material. Generally the higher the hardness, wear resistance, the better.
3. Heat resistance at high temperatures means to maintain the hardness, wear resistance, strength and toughness without losing constant cutting. Available temperature hardness expressed, can also be red hardness (cutting tool material to maintain the maximum temperature limit) said. The higher temperature hardness, the better the cutting tool, allowing the higher cutting speeds. It is the main indicator to measure the performance of the tool material. Meanwhile, in the high temperature should have antioxidant, anti-blocking ability, anti-proliferation, which have good chemical stability;
4. The strength and toughness to withstand the impact, cutting forces and vibration, tool material should have sufficient strength and toughness. Strength is represented by flexural strength; toughness expressed shock value.
5. In order to facilitate the process of manufacture of the tool, the tool requires materials with good forging, welding, heat treatment, grinding and high-temperature plastic deformation properties. Also, consider the tool material economy.

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