专利名称：Method of manufacturing annular body发明人：Hiroshi Mitsuyoshi,Yasuo Masuda申请号：US10511494申请日：20030411
公开号：US20050178005A1公开日：20050818
专利附图：
摘要：A rolled steel plate wound in a roll shape is unrolled and is cut in given
dimensions to form a blank In this case, a cut surface is caused to incline at 1 to 3 degreesrelative to the thickness direction of the blank wherein the inclination direction of the cutsurfaces on each side is reversed. The blank cut in this manner is roll-formed to cause the
cut surfaces to confront each other. Since the cut surfaces on each side incline at 1 to 3degrees in the opposite direction as described above, the cut surfaces are caused to beparallel. Then, the confronting sections are laser-welded to form a cylindrical body
申请人：Hiroshi Mitsuyoshi,Yasuo Masuda
地址：Kikuchi-gun JP,Kikuchi-gun JP
国籍：JP,JP
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