公开(公告)号：US20230193971A1

公开(公告)日：2023-06-22

申请号：US17923512

申请日：2021-04-22

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Shintaro YAGI ,  Katsumasa KIUCHI

IPC: F16D69/04 ,  F16D69/02 ,  B23K26/364

CPC classification number: F16D69/0408 ,  F16D69/026 ,  B23K26/364 ,  F16D2069/0483 ,  F16D13/648

Abstract: There is provided a method for producing a wet friction plate that can improve the retention property of lubricating oils in a fine groove formed by laser light. In a method for producing a wet friction plate (200), a friction material (210) is produced by sheet making processing in a first step. Thereafter, in a second step, a fine groove (211) is formed on the friction material (210). The friction material (210) is produced such that thermosetting resin therein is in a semi-cured state. The cross-sectional shape of the fine groove (211) is formed into a V shape by laser light. Subsequently, in a third step, the friction material (210) is disposed on a core metal (201) via an adhesive agent including thermosetting resin. Subsequently, in a fourth step, the friction material (210) is pressed while heated to crush the fine groove (211). In this manner, unevenness is formed on an intra-groove surface (212), and the thermosetting resin is completely cured.