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发明授权
CN105358731B 层叠环的制造方法 有权

层叠环的制造方法
摘要：
提高层叠环的制造效率。层叠环制造方法包括：将钢板的端部彼此焊接而形成圆筒状的管的焊接工序；将管在与轴心正交的方向以规定宽度为单位切断而切出多个环(23)的环切出工序；研磨环(23)的研磨工序；以使得多个环(23)成为分别确定的周长的方式进行调整的周长调整工序；对多个环(23)进行氮化处理的氮化工序；将多个环(23)以层叠的方式组合而形成层叠环的组装工序。在从管切出环(23)后，以顺序不变的方式一个一个地研磨，在氮化处理中，在以维持顺序的方式设置于夹具的状态下进行氮化处理。在组装工序中，以使得在管的状态时成为相邻的部位的环(23)彼此在层叠环(12A、12B)中成为彼此相邻的层的方式进行组装。
摘要（英）：

A manufacturing method includes, cutting out a plurality of rings (23), polishing the rings (23), adjusting the plurality of rings (23) so that they exhibit circumferential lengths respectively predetermined for them, nitriding the plurality of rings (23), and assembling in order to layer the plurality of rings (23) into a multi-layered ring; wherein after the rings (23) are cut out from the pipe, each of them is polished one by one so that their order is not changed; in nitriding, they are subjected to a nitriding process in a state where they are set in a jig in order to keep their order; and in assembling, the rings (23) are assembled so that rings (23) that were parts originally adjacent to each other in a state of the pipe become layers that are adjacent to each other in the multi-layered ring (12A, 12B).

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