in which intense electromagnetic field generated by an AC current is used to heat the job. The shorter and higher temperature cycle in Induction heating yields the same mechanical properties as obtained in a conventional roller furnace where the tempering cycle time is higher. The high frequency induced generates skin effect‚ which ensures that the current will flow in a thin layer in the surface of the work-piece. This increases the effective resistance of the metal and enhances the heating effect
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ofthe quenching medium. A hardness of HRC 40 is equivalent to HB 375. Appendix 3 indicates that oil quenching would not produce an adequate hardness. However‚ Appendix 4-1 shows that a hardness of HB 400 could be obtained by quenching in water and tempering in 700°F while still having 207f elongation for gciod ductility. 33. AISI 200 and 300 series 34. Chromium 35. ASTM A992 structural steel 37. Gray iron‚ ductile iron‚ malleable iron 41. Stamping
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Analysis of Findings Whale products were a very important resource during the 18th and the 19th centuries because many products had been vastly improved by parts of the whales’ bodies such as its oil. Whale products were used in many common objects in almost everybody’s everyday life during this time. Whaling had an influence on the Industrial Revolution‚ the economy of America and improved the everyday persons’ life. Because of the competitive nature of whaling‚ many whales were pushed almost to
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Lathe machine A lathe is a machine tool which rotates the workpiece on its axis to perform various operations such as cutting‚ sanding‚ knurling‚ drilling‚ or deformation‚ facing‚ turning‚ with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation. Parts Headstock contains high-precision spinning bearings. Rotating within the bearings is a horizontal axle‚ with an axis parallel to the bed‚ called the spindle. The tail-stock contains a barrel
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Fats and Oils TCP FST4826 1 Vegetable oil • • • • • • • • • • TCP Coconut oil Corn oil Cottonseed oil Olive oil Palm kernel oil Palm oil Peanut oil Rapeseed oil Soybean oil Sunflower oil 1. Palm oil 2. Soybean oil 3. Rapeseed oil 4. Sunflower oil 5. Palm kernel oil 6. Cottonseed oil 7. Peanut oil 8. Coconut oil 9. Olive oil 10. Corn oil FST4826 2 WHAT IS A FAT? • Chemical units commonly called "triacylglycerols" • “Lipids" - triacylglycerols‚ mono- and diacylglycerols‚
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According to Aristotle (335BC)‚ an essential element in the ‘good or fine’ character of every great tragic hero is ‘hamartia’‚ the fatal flaw. The tragic hero’s fatal flaws inevitably lead to negative consequences in his life. The character of Romeo‚ the tragic hero[1] of William Shakespeare’s cautionary tragedy Romeo and Juliet‚ contains three key fatal flaws that condemn him and others to death. Through employing the dramatic techniques of meaningful dialogue‚ soliloquy‚ narrative structure
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EFFECTIVE COMMUNICATION SKILLS FOR GOOD CUSTOMER SERVICE PRESENTED BY OLUWASEGUN JAMES TABLE OF CONTENTS Table of Contents Page Title Page 1 Table of Content
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Must women adopt male characteristics to succeed? This paper will discuss the question of whether women must adopt male characteristics in order to succeed. Furthermore‚ this we will examine the different barriers and obstacles faced by women to attain success‚ and offer opinions as to why it has been traditionally difficult for women to achieve success in leadership positions. New evidence suggests that women have recently been advancing to senior positions in large
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Sunglasses are eyewear designed to help protect the eyes from excessive sunlight. Eyes are extremely light sensitive and can be easily damaged by overexposure to radiation in the visible and nonvisible spectra. Bright sunlight can be merely a distracting annoyance‚ but extended exposure can cause soreness‚ headaches‚ or even permanent damage to the lens‚ retina‚ and cornea. Short term effects of sun overexposure include a temporary reduction in vision‚ known as snow blindness or welders’ flash. Long-term
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premeditated and perpetrated by candidates or their agents with the intention of gaining undue advantage over others in an examination. (iv) Jega (2006) saw examination malpractice as any form of misbehaviour that leads to the alteration of or a tempering with the prescribed ways of conducting examination in any given system. (v) Examination Malpractice is a punishable offence which is committed during the process of normal and recognized examination (Saye‚ 2003 in Jega 2006). (vi) Olagungu;
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