The material that must be manufactured with the tool

Industry News June 11, 2019

The materials used to make the tool must have high hardness and wear resistance at high temperatures, necessary bending strength, impact toughness and chemical inertness, good processability (cutting, forging, heat treatment, etc.), and are not easily deformed.

Usually when the material hardness is high, the abrasion resistance is also high; when the bending strength is high, the impact toughness is also high. However, the higher the material hardness, the lower its flexural strength and impact toughness. High-speed steel has high bending strength and impact toughness, and good machinability. Modern is still the most widely used tool material, followed by hard alloys.

Polycrystalline cubic boron nitride is suitable for cutting high hardness hardened steel and hard cast iron, etc.; polycrystalline diamond is suitable for cutting nonferrous metals, alloys, plastics and fiberglass, etc.

Carbide blade

Can also be used for high-speed steel tools, such as drills, hobs, taps and milling cutters. The hard coating acts as a barrier against chemical diffusion and heat conduction, slows down the wear of the tool during cutting, and increases the life of the coated insert by approximately 1-3 times compared to uncoated ones.

Due to the high temperature, high pressure, high speed, and parts working in corrosive fluid media, more and more difficult-to-machine materials are applied, and the automation level of cutting and the requirements for processing accuracy are getting higher and higher. In order to adapt to this situation, the development direction of the tool will be to develop and apply new tool materials; to further develop the tool’s vapor deposition coating technology, to deposit a higher hardness coating on a high-toughness, high-strength substrate to better solve The contradiction between the hardness and strength of the tool material; the development of the structure of the indexable tool; the improvement of the tool’s manufacturing precision, the reduction of the difference in product quality, and the optimization of the use of the tool.

The metal cutting process is a process in which the tool and the workpiece move and interact with each other

Industry News

The metal cutting process is a process in which the tool and the workpiece move and interact with each other.

The relative motion of the tool and the workpiece can be divided into two aspects, one is the main movement and the other is the feed movement. The main movement that causes the workpiece and the tool to move relative to the cutting is called the main movement. The speed of the main movement of the selected point on the blade with respect to the workpiece is called the cutting speed. The main sports feature is the highest speed and maximum power consumption. There is usually only one main movement.

The continuous movement of metal cutting is called feed motion. The relative displacement of the workpiece and the tool in the direction of the feed motion at each revolution or each stroke of the workpiece or tool is called feed. Feed movement is characterized by low speed and low power consumption. There can be several feed movements, either continuous or intermittent.

The metal cutting process is performed by cutting the cutting layer of the workpiece by a tool. In the cutting process, the metal layer of the tool’s cutting edge cut from the surface to be machined of the workpiece in one pass is called the cutting layer. The section size of the cutting layer is called the cutting layer parameter.

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