Nowadays, with the rapid development of manufacturing technology globalization, the requirements for cutting technology in the machining industry are gradually increasing. The emergence of tool coating to make processing efficiency, accuracy, specialization are conducive to the progress of manufacturing, and thus tool coating technology has been widespread concern in various countries around the world. The wide application of various high strength alloys and chilled cast iron, the improvement of machining accuracy and efficiency requirements of automobile engine thin-walled cylinder block, cylinder head, crankshaft and camshaft have made new demands for high-speed cutting technology. Choosing the right tool coating material has a decisive role in reducing tool material consumption, achieving good machining accuracy and surface quality, and improving the life and efficiency of difficult-to-machine cutting tools.
Brief Description of Tool Coating
The tool coating is deposited on the surface of a cemented carbide, high speed steel (HSS) tool base, or on a superhard material blade such as diamond, ceramic, cubic boron nitride, under vacuum, using a vapor deposition technique. Anti-high temperature, wear-resistant refractory metal compounds hard coating. The coating avoids direct contact between the tool and the workpiece, reducing the diffusion and chemical activity, improving the performance of anti-oxidation, anti-sticking, abrasive wear, and anti-crescent wear. Coated cutting tool have excellent cutting performance, and meet all the requirements of improving processing efficiency and the products quality.
The coating has the following characteristics:
(1) Tool coating can improve the cutting tools surface hardness and make sure the tools strength at the same time.
(2) The tool coating with good solid lubricating performance, with high anti-cohesive properties and low coefficient of friction, can significantly improve the quality of the workpiece surface processing to meet the harsh conditions of dry cutting.
(3) The continuous upgrading of the tool coating, making a series of tool coating shows excellent mechanical properties and tribological properties, but also shows good oxidation stability of the thermal stability and chemical stability in the difficult processing of high-speed cutting materials , Greatly improving the tool life and processing efficiency.
(4) Coating tool can greatly reduce the use of coolant or lubricating fluid and tool material consumption, reduce cutting costs and improve production efficiency.
(5) Several uncoated cutting tools can be replaced by a coating tool with a wide range of material properties, which reduces the variety and number of tools and simplifies tool management and reduces the tool's cost.
Coating tools have widely application and excellent performance.
Common Coatings
TiN Coating, TiC Coating, TiCN Coating, TiAlN Coating, AlTiN Coating, CrN Coating, Diamond Coating, CVD Coatings. Coating have been widely used for all kinds of tools, and coating tool is the good cutting tools for machining non-metal adhesive materials, is the ideal cutting tools coatings for machining ceramic, graphite, MMC, Hi SiAl, and other materials.
Cubic boron nitride (CBN): cubic boron nitride is synthesized in the high temperature and high pressure process, the hardness and thermal conductivity is only second to diamond, it has good thermal expansion, low density and good thermal stability, low fracture toughness characteristics. More importantly, cubic boron nitride not only has many excellent properties of diamond, but also hardly reacts with iron elements, and has excellent chemical and thermal stability for ferrous metals. Cubic boron nitride coating in addition to good wear resistance, but also cutting high hardness and the insert has a serious wear and tear of the alloy material, therefore, processing chilled cast iron, hardened steel, superalloy, hard alloy and other difficult materials when cubic boron nitride is often the best choice.
Halnn Superhard Material are also constantly developing new coatings on cubic boron nitride tools to increase the wear resistance of the tool to meet the constant needs of customers. If you want to improve tool life and improve efficiency, please contact us, we will make the most comprehensive solution for you.