Transactions of Materials and Heat Treatment

Title：Design of expanding die for sinuate protuberant tube-shoulder

Authors： YANG Hai-rong(Mechanical Engineering Department Railway Professional Technical School of Chang Zhou Changzhou 213011 China)

Unit：

KeyWords： tube end forming expand forming die

ClassificationCode：TG385

year,vol(issue):pagenumber：2008,33(6):97-99

Abstract：

The technique of one kind of water tube's sinuate protuberant shoulders was analyzed.The clearance of protuberant shoulders was small,and the common forming measure was not suitable for it.So the end expanding die was designed considering the forming characteristic and the punch configuration of six pieces and nip-die configuration of two pieces were used.The tilted-wedge internal expanding measure was presented.The tube's protuberant shoulder was formed using step-forming technique.The tube forming quality was guaranteed by two steps forming.The high productivity,the decrease of machine abrasion and the automation were realized by automation-transferring the tube end-forming machine.

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Reference：

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