专利名称：METHOD OF MANUFACTURING ULTRA-THIN-WALLED SEAMLESS METAL TUBE BY
表示看的四字成语COLD ROLLING METHOD
发明人：HAYASHI Chihiro
申请号：EP10758469.0
申请日：20100323
公开号：EP2415535B1
公开日：
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20170920
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专利内容由知识产权出版社提供
摘要：A method for producing an ultrathin-wall amless metal tube by a cold rolling method that employs a cold pilger mill of mechatronics drive type including a mechanism to give a feed and a turn angle to a tube material not only immediately before the start of a forward stroke but also immediately before the start of a backward stroke of rolling, the cold rolling method utilizing a roll having a tapered groove who diameter gradually increas or gradually decreas from an engaging entry side to a finishing exit side of a pair of rolls, and a tapered mandrel who diameter similarly gradually increas from the engaging entry side to the finishing exit side to elongate the tube material by reducing a wall thickness while expanding a mid-wall diameter of the tube material. In the above described method, by giving amounts of a turn angle and/or a feed equivalent or nearly equivalent to tho of forward stroke to the tube material immediately before the start of a backward stroke as well, it is made possible to achieve a further increa in the reduction-rate of rolling, a further reduction of wall thickness and improvement of dimensional accuracy of the product.
弥漫近义词申请人：NIPPON STEEL & SUMITOMO METAL CORP
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地址：JP
黑豆怎么吃好国籍：JP
代理机构：Zimmermann & Partner Patentanwälte mbB 更多信息请下载全文后查看
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