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Deep Drawing Sheet Metal/Aluminum Cans - Research Paper Example

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Manufacturing Materials and Processes CONTENTS Number Topic Pages 1 Introduction 1 2 Cold Working 2 3 Blanking 3 4 Drawing 3-4 5 Deep Drawing 4 6 Aluminum Can Production Process 5-6 7 Summary 7 8 Bibliography 8 Introduction The report is focused on one of the subjects of manufacturing materials and processes i.e…
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Deep Drawing Sheet Metal/Aluminum Cans
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Download file to see previous pages The presence of aluminum and the simple processes for extraction of aluminum from ores make aluminum an economical, viable and all time available raw materials for the production of beverages cans. The report does not focus the extraction processes involved for the production of aluminum but on the other side it is more precisely and briefly related to the processes of manufacturing of aluminum cans using aluminum as a raw material. As the subject of study is manufacturing materials and processes therefore the report is related to manufacturing instead of excavating or extracting materials from the ores. The initial parts of the report discuss the processes and the concepts that will be used in the production phase of aluminum cans. Cold working, blanking, drawing and deep drawing has been explained thoroughly then finally the report proceeds on the production of aluminum cans. 1. Cold Working Metals are strengthened with the help of cold working, it is done in a way that metals are subjected to plastic deformation due to which higher density of dislocation networks are obtained that actually strengthens the metals. Strain hardening, work hardening and cold working are same concepts. The deformation produced in a cold working process is always kept below the re-crystallization temperature; otherwise the process will be named as hot working rather cold working. In hot working processes metals are not strain hardened therefore strain hardening can only be achieved in the cold working process. Annealing is whereas a hot working process, in which a metal is heated above re-crystallization temperature and even though material, is subject to change its properties. Hot working process increases ductility but cold working process decreases ductility. Ductility is the property of metals by which they can be plastically distorted or manipulated under the effect of tensile forces; on the other hand malleability is the property of metals under which these are deformed with the help of compressive stresses. In engineering, elasticity is the level of metallic non permanent deformation where metal regains its original form when the applied stress is undone. Residual stresses are an enigmatic problem in metals, due to this stresses remained induced even if the applied stress is removed, consequently these residual stresses are very slowly liberated, since it’s some times undesirable therefore annealing is done to positively accelerate the process of stress relief in order to eliminate residual stresses. 2. Blanking Blanking is one of the important manufacturing processes which is based on the principle of shearing, in which a die and a punch plays a pivotal role in shearing a scrap out of the desired work piece. In blanking, the part sheared from the blank is used for further manufacturing process while the other blank work piece is scrap, on the other hand in piercing the remaining blank is useful while the sheared part is scrap. The whole phenomenon is same between blanking and piercing but the difference in seeking objective makes the two terminologies distinct. Perforating is one of the type of piercing process, in which a die is intended to make small holes on the work piece several times, leaving a pattern of small holes on the desired part for various purposes. For this operation of blanking or piercing, specialized dies and ...Download file to see next pagesRead More
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