With the continuous development of global industrial technology, the mechanical and mechanical properties (such as strength, hardness, heat resistance, abrasion resistance, tensile strength and compressive strength) of some important component materials are also required in various fields. Continuous improvement, especially in the aviation field. The continuous upgrading of aviation products, especially the use of various difficult-to-machine materials, puts higher demands on metal cutting tools and technologies, and the application of difficult-to-machine materials in various fields of humanity is more and more extensive. Due to the requirements of compact size and reduced load, the mechanical components are designed to have a strange structure, complex shapes and various shapes. The continuous introduction of high-tech new difficult-to-machine materials has met the design requirements of high rigidity, high strength, high density, light weight and small size of mechanical parts, but at the same time brought new convenience to the subsequent mechanical manufacturing processability. problem. If the processing technology, processing method and processing tool of traditional materials are still used, the processing efficiency and processing quality will be greatly reduced, and the lower processing cost cannot be guaranteed.
It is well known that in metal cutting, the cutting tool and the material of the machined part are mutually opposite and interconnected. If any one has new breakthroughs and innovations, it will force the other party to obtain new development. New materials require updated tools and newer methods to achieve efficient machining. In order to cope with and adapt to the increasing number of difficult-to-machine materials in the mechanical field and meet the requirements for processing performance, processing efficiency and machining accuracy, the global tool industry is constantly improving its blade base, geometry, coating technology and The processing of difficult-to-machine materials meets the requirements for efficient processing of difficult-to-machine materials, which is even more urgent in the aerospace industry.
ATI Stellram High Performance Tool
ATI Stellram Tool Company of the United States is leveraging the advantages of R&D and production of internal difficult-to-machine materials of ATI Group (American Metallurgical Technology International Group Co., Ltd.), while the company's internal brother company develops new difficult-to-machine materials, and is dedicated to processing difficult machining. The development of material tools strives to optimize the innovation and processing methods of tool base material, cutting groove and surface coating, so that it is always in the world difficult to process materials when processing difficult tool materials, both in processing efficiency and cost performance. The leading edge of the tool rank. ATI Stellram's high-performance and cost-effective new difficult-to-machine tool has become the tool of choice for the processing of difficult-to-machine materials, and has made a due contribution to the continuous development of high-efficiency machining technology for difficult materials.
Reasonable processing methods and parameter selection
Reasonable tool selection and optimized machining methods are important for improving machining efficiency and extending tool life, and are more important when machining difficult-to-machine materials.
An excellent tool for difficult-to-machine materials must have an ultra-fine grain tool base (more than 98% particle ratio of 1μm), sharp cutting angle, strong cutting edge, heat-resistant surface coating and different materials. Cutting methods and the like are effective factors for reducing the temperature of the processing area and rapid heat dissipation.
According to the actual experience of processing difficult materials in the past, the reasonable selection of processing methods and parameters is very important for processing such difficult-to-machine materials. The use of special processing techniques is very effective for improving processing efficiency and extending tool life. Regardless of the processing method used, the purpose is to minimize the temperature of the tool tip and the part of the machined part, to prevent surface hardening of the machined part and excessive temperature of the tool tip. Increasing the heat dissipation area, controlling the cutting force, using the cycloidal pass and the large feed milling method can improve the machining efficiency and extend the tool life.
(1) Sufficient cooling, proper line speed, effective chip breaking, and reasonable tool wrap angle are very effective for controlling tip temperature. First of all, for CNC machines and tools with internal cooling, the inner cooling function that is most conducive to cooling should be used as much as possible, so that the powerful high-pressure water flow takes a lot of cutting heat and ensures that the processing area is within a certain temperature range. Secondly, even if there is no machining equipment for internal cooling, it is recommended to use an external cooling internal shank to increase the cooling pressure and improve the cooling effect.
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