called refrigerants. Initially refrigeration was used in the preservation of foodstuff by preventing bacterial action and this technology was further developed and extended its use in industrial applications. For example cool cutting oil helps in machining operations by lowering the temperature of work piece to
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elongation of at least 2% in all directions. Additional consideration should be given to weight minimization (because of the relatively large size of the wrench)‚ corrosion resistance (due to storage and use environments)‚ machinability (if finish machining is required)‚ and appearance. Figure 1.1 1. Based on the size and shape of the product‚ describe several methods
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system emissions and sand disposal. The process is well-suited for castings with complex geometries‚ tight tolerances‚ and smooth as-cast surface finish requirements. When the castings are designed to fully exploit these advantages‚ cleaning and machining times are dramatically reduced if not completely eliminated. Therefore‚ the lost foam casting process is viewed as a value-added process rather than a substitute for sand casting. Lost foam castings are produced by pouring molten metal into a foam
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superconductors‚ vacuum pumps‚ and other materials and equipment. In addition‚ Cryotherapy to remove skin abnormalities is another use of liquid nitrogen. Also‚ it is used in shielding materials from oxygen exposure and cooling materials for easier machining or fracturing. Physical and Chemical Properties At normal pressure‚ liquid nitrogen boils at 77 K (−195.8°C or −320.4°F).The liquid to gas expansion ratio of nitrogen is 1:694‚ which means liquid nitrogen boils to fill a volume with nitrogen
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Taylor was born to a very rich family in Germantown‚ Philadelphia‚ Pennsylvania. Taylor’s father‚ Franklin Taylor was a Princeton lawyer and his mother‚ Emily Annette Taylor was an abolitionist. He focused most his career improving his management and machining methods through lecturing‚ writing‚ and consulting. Taylor who was recognized for scientific management was a pre classical contributor. He was known for creating a system that stated the relationship of workers and managers through the introduction
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efficiency gains in manufacturing. Moreover the strategy of outsourcing about 87% of production activities related to spare parts while maintaining core competencies activates like R&D‚ design‚ quality control‚ and key trade market component machining in house resulted in flexibility in new part productions was very well thought. And‚ last but not least‚ the establishment of the quality control system focused on improviving reliability and overall quality increased the credibility of Ducati.
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Copyright reserved | Department of Mechanical Engineering | Semester Test 2 - 2011 | | Manufacturing Systems MVS 311 | Date - 15 April 2011 | Duration – 90 minutes This is an open book examinationInternal examiner: Mr E.T. BrettExternal examiner: Mr. J.J. Pienaar | * Answer ALL THE questions. * State and motivate all assumptions clearly. * Please Note: All questions do not carry the same marks. * This paper consists of 2 pages | | Question One a Establish the initial
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The True Cost of Bearing Lubrication By Matt Mowry Product Manager Table of Contents introduction................................................................................................................................2 hidden Costs of Lubrication ....................................................................................................3 Ancillary components for OEMs ...................................................
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Transducers and feedback elements: resolvers‚ inductosyns optical grating and encoders 3 Abhishek Tevatia‚ Assistant Professor‚ MAE‚ MAIT‚ Delhi Computer Aided Manufacturing (ETME-401) 27. Modern CNC machines: CNC lathes. Turning centres. Machining centres. Automatic pallet changers. Automatic tool changers. 28. 29. Direct numerical control and applications. CNC machine design features. Supporting structures. Guide ways. Ball screw-and-nut mechanisms. Machine spindles. Concept of rigidity
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CHAPTER 4 JOB COSTING 4-1 Cost pool––a grouping of individual indirect cost items. Cost tracing––the assigning of direct costs to the chosen cost object. Cost allocation––the assigning of indirect costs to the chosen cost object. Cost-allocation base––a factor that links in a systematic way an indirect cost or group of indirect costs to cost objects. 4-2 In a job-costing system‚ costs are assigned to a distinct unit‚ batch‚ or lot of a product or service. In a process-costing system
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