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公开(公告)号：US20210039154A1
公开(公告)日：2021-02-11
申请号：US17046335
申请日：2019-04-12
Applicant: SMS group GmbH
Inventor： Sarah HORNICKEL
Abstract: A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.
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