At present, the focus of improving machine tool processing efficiency is still to improve the speed of the machine tool and apply advanced tools. The development of machine tools in the direction of high speed can fully utilize the performance of modern tool materials, which not only can greatly improve the processing efficiency, reduce the processing cost, but also improve the surface processing quality and precision of the parts. Advanced cutting tools rely mainly on advances in tool materials and coating technology and innovation in tool structure. Here we focus on the technological advancement and application of coatings.
Help achieve high-speed processing <br> <br> Zhang Jianming: high-speed processing to improve processing efficiency, reduce manufacturing costs, thereby enhancing a key factor in the competitiveness of enterprises. High-speed machining places higher demands on the tool. Now everyone thinks that the tool's base material, geometry and coating are the three elements that make up the "perfect" tool. In order to create a perfect tool for machining, the coating material plays a vital role in addition to the refinement of the base material and the addition of trace elements to adjust the geometry of the tool.
In the high-speed machining process, due to the increase of the cutting speed, a large amount of cutting heat is brought about, and how to prevent the tool from being oxidized under the high-speed cutting state is a problem that must be solved. This requires our coatings to have very high oxidation resistance while having high hardness and high toughness. Taking our HYPERLOX coating as an example, the HYPERLOX coating combines high nanohardness with high hardness and toughness. In addition, this coating has an oxidation resistance temperature of 1,100 ° C due to its high aluminum content. Whether in dry or coolant-free cutting environments, HYPERLOX is suitable for high-speed cutting of difficult-to-cut materials and hard machining. In addition, in the high-speed cutting process, how to eliminate the chip is also an important factor. In high-speed machining, especially in high-speed drilling, the smooth discharge of the chips can take away a lot of cutting heat, thus avoiding the cutting edge of the tool to withstand higher temperatures. This requires the coating to have a very smooth surface.
CemeCon's SN series coatings, due to the use of HIS high-energy ion magnetron sputtering technology, determine in principle that the surface of the coating is very smooth, and the smooth coating surface allows the chips to be friction-free during high-speed cutting. This allows for a greater amount of cutting heat to be taken to extend tool life during high speed machining.
Chen Jun: The improvement of tool coating performance is the key to the development of technology. The new coating process has been widely applied to all kinds of tools and tool surfaces. The coating process development extends from simple titanium nitride process to DLC, Al2O3, TiCN, TiAlN, etc. with high hardness, high oxidation temperature, good thermal hardness, strong adhesion, low friction coefficient and low thermal conductivity. Composite coating. The change and improvement in the performance of the composite coating is primarily directed to different failure modes of the tool. The composite coating forms an effective heat shield on the surface of the tool to prevent thermal stress attacks on the substrate. Reasonable selection of the tool coating area and adjustment of the distribution of the matrix material elements allows the tool to have both high hardness and high toughness. Of course, the effect of the coating on different types of tools is also different. Different processing environments also require corresponding changes in coating properties and structure.
Star Arc currently offers DLC and DLC composite coatings for processing non-ferrous metal tools. The choice of coating refers to the customer's processing environment, processing materials and other factors. Especially in the high-speed cutting of graphite, copper, aluminum alloy and other materials, the life of the tool and the surface condition of the workpiece are greatly improved.
Pan Gaomin: In order to adapt to the globalization of high-speed processing trends, Oerlikon Balzers launched a new generation of G6 coating. BALINITALCRONA is a high performance titanium-free coating that is one of the new revolutionary G6 generations. It has an unprecedented level of oxidation resistance and thermal hardness. These properties make them extremely resistant to wear under both normal conditions and under strong mechanical stress. The performance of modern machine tools still has great potential for development. Using BALINITALCRONA coated tools, you can significantly increase the cutting speed and produce more parts per unit time, which greatly increases the productivity of manufacturing resources and makes your tools more competitive. In the dry and wet processing, BALINITALCRONA has been proved to have a very high efficiency improvement, including processing non-alloy steel, high-strength steel, high-hardness steel (up to HRC54). Experiments show that BALINITALCRONA is very suitable for: rough machining and finishing hard Alloy end mills and indexable carbide inserts; roughing and finishing of high speed steel face milling cutters; carbide and high speed steel hobbing cutters.
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