UNDERWATER WELDING INTRODUCTION The fact that electric arc could operate was known for over a 100 years. The first ever underwater welding was carried out by British Admiralty – Dockyard for sealing leaking ship rivets below the water line. Underwater welding is an important tool for underwater fabrication works. In 1946‚ special waterproof electrodes were developed in Holland by ‘Van der Willingen’. In recent years the number of offshore structures including oil drilling rigs‚ pipelines‚ platforms
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The ruby laser‚ first invented in 1960‚ was the world’s first laser. Created by Theodore Maiman‚ the ruby laser is composed of aluminium oxide where some of the aluminium ions have been replaced with chromium ions. These chromium ions are what gives the ruby laser its red color. Its gain medium is a cylindrical crystal. A fully reflecting mirror and a partially reflecting mirror are placed at both ends of the cylindrical crystal. A high intensity lamp is spiraled around the cylinder to produce a
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display involving analog to digital conversion and laser bit communication was constructed. The exhibit also demonstrates how more bits can be used to communicate a more accurate signal. For this task‚ an audio information source (CD player) produces a signal that is converted to digital information. This information will then be sent to a receiver using laser light switching on and off to communicate zero’s and one’s. The receiver will pick up the laser light and convert the digital information back
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Laser dentistry is a relatively new form of dental care. Laser Dentistry uses lasers to perform surgery‚ prepare cavities‚ and harden dental resins. This use of lasers has allowed dentists to perform tasks with less pain and with improved results. There are many different types of lasers used in the dentistry field. Theses lasers included the argon laser‚ the diode laser‚ the neodymium: yttrium aluminum garnet (Nd:YAG) laser‚ the holmium: yttrium aluminum garnet (Ho:YAG) laser‚ the erbium: yttrium
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Learn how to create laser graffiti This week‚ I met with the gentlemen of Graffiti Research Lab Vienna‚ aka‚ GRLv‚ and they were kind enough to break it on down and show me how to set up a laptop‚ camera‚ projector‚ and laser to be a nondestructive and awesome graffiti tool. The following is copied directly and without edits from the README file as found in the Laser Marker zipfile that you can find in the sidebar at http://graffitiresearchlab.at. Laser Marker // Graffiti Research Lab
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Introduction I want welding on pipelines and oil rigs to be my career. The reason I selected this job is because I like to weld and the pay is really good. I would like to start my own company and hire my own workers. If I am able to open my own company I will be able to make more money and be able to retire at a young age. Career-related information In order to be a welder you must have a high school diploma and appropriate certification. The bureau of labor statistics states that “A high
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Unit 003: Principles of welding Lesson 1 Handout 1 – Heat sources required for fusion welding The following basic notes have been produced for learners and tutors and if required could be extend. Objectives 3.1.1(a)(b)(c)(i)(ii)(d)(e)(i)(ii)(iii)(iv)(v) Introduction To make a fused joint the heat source must be capable of creating localized fusion in a controlled manner. Basic requirements for the production of a fully fused joint: Temperature should be `significantly above
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There are lots job aids such like jigs‚ and pipe holders available to help welders do their job and minimize the risk of injury. Special chairs and creepers are available to provide support while performing welding tasks so that bad posture is avoided. There are many causes of injury in the welding field. Common causes of injury are repetitive gripping‚ twisting‚ repetitive reaching‚ and fatigue. Many injuries are developed when there is a mismatch between the capabilities of the worker and the demands
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WELDING Welders are often working on everything you think that has something to do with construction But they work on a lot of things such as; shipbuilding‚ automotive‚ construction and manufacturing industries. Welders work on many dangerous jobs and projects for the whole united states. They work our bridges‚ boats‚ cars‚ roads‚ etc. Welders are basically important without welders there wouldn’t be any boats and bridges that we drive on everyday getting us from point a to b. Job duties; Welders
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