What knife is good for milling keyway if the die steel is too hard

Machining of mold steel.

KBN100 CBN blades are recommended.

The hardness of cemented carbide blades is 89 94HRA, which is equivalent to 71 76HRC, and for the hardness of HRC40 or more, HRC50 or so, when the die steel is processed, the cemented carbide blades are easy to burn the knife, resulting in wear blocks, and the processing efficiency is low.

Ceramic blades are easy to collapse due to too much brittleness, generally used for superfinishing HRC50 below the workpiece, cubic boron nitride blade is another superhard material blade after synthetic diamond, the hardness of the blade is generally HV3000 5000, fine HV hardness conversion HRC is equivalent to HRC95-100, for HRC50 above high hardness quenching workpiece high-speed processing to reduce costs is the most economical. Currently, the blade is in ferrous metal.

In the field of processing, it is a blade material with excellent wear resistance, and after demonstration, the life of cubic boron nitride blades is generally several times to dozens of times that of cemented carbide blades and ceramic blades

With Mitsubishi's, there is one with a carbide coating that can machine milling cutters of more than 50 degrees.

Tungsten carbide milling cutter, imported, domestic is not good.

KBN100 CBN blades are used for machining blades of die steel with a hardness of about HRC50.

KBN100 grade is widely used in the hardness of HRC50 between RC45-HRC79 in die steel materials, which solves the problem of low efficiency when traditional cemented carbide cutter heads process mold steel parts with a hardness of about HRC50, and the problem of frequent replacement of blades, poor machining accuracy and shape tolerance, and solves the problems of cemented carbide blades and coated blades, ceramic blades are not durable, and the blades wear out too quickly.

It is recommended to use KBN100 CBN inserts for processing quenched die steel.

In the quenching state, quenching and tempering state and annealing state, the hardness of the material is not the same, and the turning tool material used is also different. If it is a die steel in the quenching and tempering state before quenching, the amount of turning is generally not large, and a tungsten carbide tool is required.

CNC turning tools for turning and turning cubic boron nitride inserts KBN100 turning tools can be used for tool steel (H13), high chromium steel, high-speed steel, and high-carbon alloy steel with hardness of more than HRC60 after turning and quenching (with turning tools, milling cutters and non-standard forming turning tools); Turning tools for tool steel (H13), high-chromium steel, high-speed steel, and high-carbon alloy steel can be used for turning instead of grinding to improve turning efficiency.

1.It can be seen from several aspects: cemented carbide and high-speed steel are definitely higher than cemented carbide.

2.Generally look at the material, hardness, production process, etc., high-speed steel is much less than cemented carbide, and it is known that cemented carbide is harder than high-speed steel.

3.Tungsten carbide does not soften at 1000 degrees Celsius, while high-speed steel does not soften at 500 to 600 degrees Celsius.

Hardness is ranked from small to large: high-speed steel, tungsten steel (cemented carbide), porcelain gold, ceramic, polycrystalline diamond, diamond.

There is a company that has a good selection of materials, and the material imported from Europe is called Brandy.