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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Bluetooth • 12-megapixel CMOS image sensor for high resolution‚ • 3-inch Super-density 920‚000-dot VGA LCD • Make-up mode 2.12 Unique features The CV-3 obtains the both advantages between digital camera and single lens reflex. The camera body can be digital or single lens reflex by pickup the lens unit. The traditional Sony camera just can be general camera. Comparing with the Sony camera‚ that means it can meet both needs between amateur photographers and shutterbugs. Another unique feature is
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reported that the use of pulsed arc welding in place of conventional GTAW increases the output by 200–400%‚ reduces consumption of argon by three to ten times‚ and also reduces the cost of 1 m weld deposition by three to five times. The aim of pulsing is mainly to achieve maximum penetration without excessive heat build-up‚ by using the high current pulses to penetrate deeply and then allowing the weld pool to dissipate some of the heat during relatively longer arc period at a low current. The
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quality low deposition rate welding process. It uses an arc struck between a nonconsumable tungsten electrode and the work to fuse the base material and thereby form a welded joint. The TIG welding process may be used on thin sheet material without the addition of a filler metal (autogenous TIG welding). Alternatively‚ when working on thicker sheet or when joining dissimilar materials‚ a separate wire filler metal is added into the arc region where it is melted and directed by the welder
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heroine‚ who do you think of? Is the person real or or not? I think that Saint Joan of Arc is a heroine. She is famous for leading the French into war against the English at a young age. I also think of Katniss Everdeen as a heroine. She is the lead characters of one of my favorite book series‚ The Hunger Games Trilogy. There are many similar and different characters between these two heroines. Saint Joan of Arc was a military leader who grew up in a small town in France. When Joan was around twelve
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PROS AND CONS OF UNDERWATER WELDING To briefly present the advantages and disadvantages of underwater welding let us first separate this two compound words‚ the UNDERWATER and WELDING. Underwater is anywhere where this is water‚ either in low or in deep aquatic areas. Now‚ Welding is the action of burning something (particularly a metal) into creating or fixing something with the use of a high temperature to burn down or melt a metallic material so that it can be reformed. Combining this two concepts
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an early mechanism for projecting images. The modern camera evolved from the camera obscura. The functioning of camera is very similar to the functioning of the human eye.The first practical reflex camera was the Franke & Heidecke Rolleiflex medium format TLR of 1928. Though both single- and twin-lens reflex cameras had been available for decades‚ they were too bulky to achieve much popularity. The Rolleiflex‚ however‚ was sufficiently compact to achieve widespread popularity and the medium-format
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Running Head: Different Aircraft Accident Photography Procedures Aircraft Accident Photography David M. Merckson Embry-Riddle Aeronautical University Daytona Beach‚ Florida Worldwide Online Instructor: John Kuborn January 26‚ 2013 ABSTRACT In this paper I will briefly go over and describe the various types of Aircraft Accident Photography procedures and equipment used to perform those duties. I will support and also will oppose the different types of accident photography
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André Kertész Photographic master André or Andor Kertész was born on July 2‚ 1984 in the European capital of Budapest in Hungary. While working as a clerk at his city’s stock exchange in 1912‚ he purchased his first camera and created his earliest form of art work‚ some of which were published in his country’s magazines. He spent years as an amateur photographer and eventually moved to the French capital of Paris in 1925 where he began his career as a freelance photographer. During his stay
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inverted image that first shows up. 5. What are point and shoot cameras? How do they differ from SLR cameras? Point and shoot cameras are those that use an optical viewfinder‚ rather than having the semiautomatic mirror. An SLR‚ or single lens reflex‚ camera has a semiautomatic movement of the mirror‚ which produces an exact image in the viewfinder. 6. What is JPEG? What considerations have to be kept in mind with JPEG? JPEG which stands for "Joint Photo Experts Group‚" is the default file format
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