Silencer

A silencer comprises a shell and a core pipe located in the shell, and the core pipe comprises a first pipe body, a second pipe body matched with the first pipe body and steel wool connecting the first pipe body and the second pipe body. The steel wool comprises a ring body part and a plurality of protruding parts which are distributed in the circumferential direction of the ring body part at intervals and protrude out of the ring body part in the radial direction of the ring body part. The ring body part is connected to the second pipe body in a sleeving manner; the protruding part is contained in the first pipe body, and the protruding part and the inner wall of the first pipe body extrude each other. The ring body part comprises a thin wall part located between every two adjacent protruding parts, and the thin wall parts are welded and fixed to the second pipe body. 一种消音器，其包括壳体以及位于所述壳体中的芯管，所述芯管包括第一管体、与所述第一管体相配合的第二管体、以及连接所述第一管体与所述第二管体的钢丝绒，所述钢丝绒包括圈体部以及间隔分布在所述圈体部的周向且沿所述圈体部的径向向外凸出所述圈体部的若干凸起部；所述圈体部套接在所述第二管体上；所述