Selection of Tool Materials

Release time：2023-06-08

The materials used to manufacture tools must have high high temperature hardness and wear resistance, Flexural strength, impact toughness and chemical inertia, good processability (cutting, forging and heat treatment, etc.), and not easy to deform. Generally, when the Hardness is high, the abrasion resistance is also high; When the Flexural strength is high, the impact toughness is also high. However, the higher the Hardness, the lower its Flexural strength and impact toughness. Because of its high Flexural strength, impact toughness and good machinability, high-speed steel is still a tool material widely used in modern times, followed by cemented carbide. Polycrystalline cubic Boron nitride is suitable for cutting hardened steel and hard cast iron with high hardness; Polycrystalline diamond is suitable for cutting non ferrous metals, alloys, plastics, and fiberglass; Carbon Tool steel and alloy Tool steel can only be used as files, dies, taps and other tools. The carbide indexable inserts have been coated with Titanium carbide, titanium nitride, aluminum oxide hard layer or composite hard layer by chemical vapor deposition. The developing vapor deposition method can not only be used for hard alloy cutting tools, but also for high-speed steel cutting tools, such as drills, hobs, taps, and milling cutters. Hard coatings act as barriers to chemical diffusion and heat conduction, slowing down the wear rate of cutting tools, and increasing the lifespan of coated blades by approximately 1-3 times compared to uncoated blades.

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Vacuum Heat Treatment in Tool Forging

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Vacuum Heat Treatment in Tool Forging

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