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Keyhole Light Lamp, PIR Infrared IR Wireless Auto Sensor Motion Detector Door Keyhole 4 LED Light Lamp, Night Work Day Standby, Easy to Apply, Tap Lights-Battery Operated (Gold)

£9.9£99Clearance
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Siegman, A.E. Defining, measuring, and optimizing laser beam quality. SPIE 1990, 1224, 2–13. [ Google Scholar] Real weld seam for copper/steel metals and the extracted keyhole and weld pool geometry for different shift distances from the initial joint plan. (a) −200 μm, (b) −100 μm, (c) 0 μm, (d) +100 μm, (e) +200 μm, (f) +300 μm, (g) +400 μm, and (h) +500 μm, where the negative shifts indicate a shift towards the copper side. 6. Conclusion High-quality dissimilar welding has many applications in power generation, and in the chemical, petrochemical, nuclear, and electronics industries for the purposes of tailoring component properties or weight reduction. More recently, laser-welding technologies have been successfully used to manufacture hybrid microsystems consisting of different materials. The welding of dissimilar metals is determined by their crystal structure and compositional solubility in their liquid and solid states. Diffusion in the weld pool often results in the formation of intermetallic phases. When no filler materials are used, the formation of intermetallic compounds is dependent on the interaction of the joining materials and the welding parameters [ 1– 3]. Motion sensor: most of the lights in the market have a built-in motion sensor, which helps the lamp to turn on automatically if it detects any motion.

Wu, D.Y.; Hua, X.M.; Fang, L. Understanding of spatter formation in fiber laser welding of 5083 aluminum alloy. Int. J. Heat Mass Transfer. 2017, 113, 730–740. [ Google Scholar] [ CrossRef] Battery Powered:Lights need the power to work properly. The source of power can be the electricity of your home from wires or built-in batteries. If you are easy to install the wires with the lamp, then you can consider any device that gets power directly from home electric wires this will assist you to rid of charging the lamp again and again.Yang, J.; Li, Y.L.; Zhang, H. Microstructure and mechanical properties of pulsed laser welded Al/steel dissimilar joint. Trans. Nonferr. Met. Soc. China 2016, 26, 994–1002. [ Google Scholar] [ CrossRef] Durability:This is a point you should consider in every product while shopping. The lamp should be durable for a longer period, so you do have not to replace it again and again. Naito, Y.; Katayama, S.; Matsunawa, A. Keyhole behavior and liquid flow in molten pool during laser arc hybrid welding. Proc. SPIE. 2003, 3888, 34–45. [ Google Scholar] [ CrossRef] Cho, J.H.; Na, S.J. Implementation of real-time multiple reflection and Fresnel absorption of laser beam in keyhole. J. Phys. D Appl. Phys. 2006, 39, 5372–5378. [ Google Scholar] [ CrossRef] Zhao, S.S.; Yu, G.; H, X.L. Numerical simulation and experimental investigation of laser overlap welding of Ti6Ai4V and 42CrMo. J. Mater. Process. Technol. 2011, 211, 530–537. [ Google Scholar] [ CrossRef]

There are many applications for the dissimilar copper/stainless steel welding like the chemical industries, power generation, electric, electronic, and cryogenics. It is very useful in the case of resulting hybrid products which merge the excellent electric and thermal conductivity of copper with essential weight and cost saving [ 4]. Stainless steels are commonly used in welded joint metals. Austenitic stainless steels (e.g., 316L and 304) represent more than 2/3 of total stainless-steel production. These stainless steels are preferred over other stainless-steel types owing to their good welding response. Copper and copper alloys are amongst the most versatile engineering materials. The properties of copper, such as its strength, conductivity, corrosion resistance, machinability, and ductility, make it suitable for a wide range of applications. Stainless steels have a low thermal conductivity in comparison to copper. Joining copper to stainless steels can increase the heat dissipation from these alloys during high-temperature applications and decrease the formation probability of intermetallic phases, but the high thermal conductivity of copper is one of the main limitations regarding its welding. In other words, the high thermal conductivity of copper tends to rapidly dissipate heat away from the weld zone, leading to difficulties in reaching the melting temperature [ 12]. If you are a person who avoids complex installations, then you can consider a device that has a long cell life.The data used to support the findings of this study are available from the corresponding author upon request. Conflicts of Interest

Zhou, J.; Tsai, H.L. Investigation of mixing and diffusion processes in hybrid spot laser-MIG keyhole welding. J. Phys. D Appl. Phys. 2009, 42, 095502. [ Google Scholar] [ CrossRef]Motion Sensor:keyhole motion sensing light,Sensitive motion detective sensor, opening door in dark is so easy, Using Advanced PIR sensing technology, These calculations indicate that the surface tension pressure for copper ( P s.c) is less than that for steel ( P s.s), which may be the direct reason for the elongation of the rear keyhole surface towards the copper more than the steel as this force is responsible for the keyhole curvature closing. 5.2. Effect of Welding Speed

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