- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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High Speed Machining || Laser-assisted high speed machining of Inconel 718 alloy
摘要： The material is termed as hard-to-machine if it possesses any of the following properties, such as higher toughness, increased resistance to corrosion and fatigue, low thermal conductivity, high hardness and brittleness, and high strength to weight ratio. On extreme machining conditions these characteristics lead to increased tool wear, higher heat generation, increased cutting energy, poor surface finish, and difficulty in chip formation. Hard-to-machine materials are classified into three broad categories: hard materials, nonhomogeneous materials, and ductile materials as shown in Fig. 9.1. The reason for considering hard material as hard-to-machine material is because of the higher strength, hardness along with poor thermal conductivity that would end up in shorter tool life, poor surface quality, and lower productivity. Because of high ductility, strain rate, and nonuniform chip formation, the materials like low carbon steels, polymers, etc., are also categorized as hard-to-machine material. The nonhomogenous material distribution present in the composite material makes it hard-to-machine that results in lesser tool life and poor surface finish [1].
关键词： hybrid machining,Inconel 718,high speed machining,Laser-assisted machining,hard-to-machine materials
更新于2025-09-16 10:30:52
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Fabrication of deep and small holes by synchronized laser and shaped tube electrochemical machining (Laser-STEM) hybrid process
摘要： The synchronized laser and shaped tube electrochemical machining (Laser-STEM), a hybrid machining process that combined the advantages of electrochemical machining (ECM) and laser beam machining (LBM), has been proposed and studied. The mechanisms of Laser-STEM were studied theoretically and experimentally. Mathematical model has been developed to study the effects of laser-induced thermal effects on the electrochemical dissolution rate. The influences of electrolyte concentration and laser power on the laser attenuation coefficient have been studied. Results showed that the side gap could be decreased by 62.7% and the feeding rate could be raised by 108% when utilizing Laser-STEM with a proper laser power for drilling small holes, compared with that without laser assistance. Moreover, the performance of Laser-STEM has been investigated, in terms of laser power and pulsed voltage. Experimental results showed that the machining efficiency increased with higher laser power, pulse voltage, and feeding rate, and the precision could be improved with the higher laser power and feeding rate and a smaller pulsed voltage. Finally, small holes with a diameter of 1.25 mm and free of recast layer have been fabricated on the aluminum alloy workpiece of 5 mm in thickness.
关键词： Small hole,Electrochemical machining,Laser machining,Hybrid machining,Tube electrode
更新于2025-09-12 10:27:22
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State of the Art on Laser Assisted Electrochemical Machining
摘要： Laser Assisted Electrochemical Machining (LAECM) has proven its advantages and applications over almost all the range of conductive materials. It offers its adroitness to generate simple shapes to complex shapes from macro to micro machining. Laser assisted ECM is a hybrid approach of machining which has been manifested to obtain improved results in terms of surface integrity, thermal damage, geometrical tolerance and material removal rate. Laser assisted Electrochemical Machining (LAECM) is a hybrid machining process in which laser enhances the electrochemical dissolution process by increasing the temperature and hence the current density of the electrolyte. Laser helps to remove material from the particular machining zone and stray machining effect is reduced and thus improves the precision and efficiency of LAECM, also productivity. New route of laser assisted hybrid machining processes has been built in the past decade by few of the researchers to reduce the intrinsic problems of ECM. This paper reviews on the investigation into LAECM process. The article also highlights various possibilities and applications of LAECM process. There are various challenges in LAECM process which have been also discussed in this paper.
关键词： Laser Assisted Electrochemical Machining,electrochemical dissolution,material removal rate,LAECM,hybrid machining
更新于2025-09-12 10:27:22
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Hybrid laser assisted machining: a new manufacturing technology for ceramic components
摘要： Silicon nitride is a high-performance ceramic used for high-temperature structural applications due to its elevated strength, fracture toughness and corrosion resistance. These properties make this material extremely difficult to machine, leading to component costs that can be prohibitive in many fields where its characteristics could provide improvements in performance. In order to overcome manufacturing limitations, a new technique is proposed in this paper: a hybrid solution that combines laser and conventional cutting tools where the laser source induces controlled cracking into the surface of the material. By properly selecting the laser parameters (laser power, scanning speed, etc.), the crack depth can be smaller than the machining depth of cut. Cracking can be performed in a preceding phase so that no thermal load is induced in the inserts, while maximum cutting load is reduced, thus increasing tool life.
关键词： Silicon Nitride,laser treatment,hard ceramic components,hybrid machining,grinding
更新于2025-09-12 10:27:22