Cubic Boron Nitride (CBN) and Polycrystalline Cubic Boron Nitride (PCBN) tools have been commonly used for hard material turning. But there are still many workshops that refuse to use because they are too expensive. With the new cryogenic cutting technology, high-speed hard turning can be performed without expensive tools, and tool life can be extended.
The Icefly cryogenic cooling system, developed by Air Products, USA, can directly spray -320°F liquid nitrogen into a cutter head through a nozzle during hard turning. The principle of operation is based on the principle that liquid nitrogen ejected on the cutter head can rapidly reduce the cutting temperature generated in the cutting zone, reduce the softening effect of the cutter head due to high temperature, and increase the hardness of the cutter head and the cutting performance of the cutter. In addition, it is more important that the processing under low temperature cooling can better protect the integrity of the cutting edge and prevent the damaged cutting edge from damaging the machined parts; at the same time, the surface of the machined part is under compressive stress and the surface of the machined part is improved. Quality and reduce surface roughness.
Air Products' cryogenic cooling system can be used as an independent system or as an auxiliary device for the machine's cooling system to retrofit various machine tools, such as the Quest series of lathes manufactured by Hardinge Corporation of New York State. The liquid nitrogen is generally stored in a cylindrical container close to the machine or in a sealed oil tank. A flexible joint is used to connect the flexible liquid nitrogen pipe to the lathe tool holder and the liquid is passed through a nozzle to transfer the liquid nitrogen. Nitrogen is delivered to the cutter head. In use, the programming is the same as the traditional cooling system.
According to reports, applying the cryogenic cooling system to parts made of hardened steel, hard composite materials, and powder metallurgical materials has a special advantage because inert liquid nitrogen can evaporate quickly after contact with these parts. , and will not leave excess on the parts as normal cooling. This is particularly advantageous for the processing of parts made of porous, water-permeable powder metallurgical materials, which saves time that often requires careful cleaning of excess material.
The Icefly cryogenic cooling system, developed by Air Products, USA, can directly spray -320°F liquid nitrogen into a cutter head through a nozzle during hard turning. The principle of operation is based on the principle that liquid nitrogen ejected on the cutter head can rapidly reduce the cutting temperature generated in the cutting zone, reduce the softening effect of the cutter head due to high temperature, and increase the hardness of the cutter head and the cutting performance of the cutter. In addition, it is more important that the processing under low temperature cooling can better protect the integrity of the cutting edge and prevent the damaged cutting edge from damaging the machined parts; at the same time, the surface of the machined part is under compressive stress and the surface of the machined part is improved. Quality and reduce surface roughness.
Air Products' cryogenic cooling system can be used as an independent system or as an auxiliary device for the machine's cooling system to retrofit various machine tools, such as the Quest series of lathes manufactured by Hardinge Corporation of New York State. The liquid nitrogen is generally stored in a cylindrical container close to the machine or in a sealed oil tank. A flexible joint is used to connect the flexible liquid nitrogen pipe to the lathe tool holder and the liquid is passed through a nozzle to transfer the liquid nitrogen. Nitrogen is delivered to the cutter head. In use, the programming is the same as the traditional cooling system.
According to reports, applying the cryogenic cooling system to parts made of hardened steel, hard composite materials, and powder metallurgical materials has a special advantage because inert liquid nitrogen can evaporate quickly after contact with these parts. , and will not leave excess on the parts as normal cooling. This is particularly advantageous for the processing of parts made of porous, water-permeable powder metallurgical materials, which saves time that often requires careful cleaning of excess material.
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