The results show that the pre-hardened plastic-mould steel belongs to a little low machinability steel because of much hard inclusion existing in microstructure and its high strength and hardness.
结果表明，这类材料属较难加工材料，这主要是由于钢中存在大量硬质点，且材料具有较高强度和硬度所致。
The types and characteristics of the tools for machining the pre - hardened mould steel are introduced in this paper. The application and developing trend of these tools are discussed.
论述了适应于加工这种材料的刀具的种类和特点，以及国外应用情况和发展趋势。
The types and characteristics of the tools for machining the pre - hardened mould steel are introduced in this paper. The application and developing trend of these tools are discussed.
论述了适应于加工这种材料的刀具的种类和特点，以及国外应用情况和发展趋势。
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