Patent ID: 9186713
Filing Date: 2015-11-17
Classification: B21B,B21C,B23K,C21D,F27B

Abstract:
1. A method for producing a hot coiler drum working at 900-1200° C. including following steps: (i) welding a drum body into a cylinder having a desired diameter, and then fitting the welded drum body onto a supporting piece of a tooling piece that has a same diameter as that of an inner wall of the drum body; (ii) reserving space for a window in an axial direction of the drum body, except a zone of the window on the drum body, uniformly welding several radial rib plates on the inner wall of the drum body along the axial direction of the drum body and welding several axial rib plates on the inner wall of the drum body along the radial direction of the drum body; (iii) welding two flanges respectively on two ends of the drum body; (iv) opening a window at the reserved space in the axial direction of the drum body, and welding guiding rib plates on the radial rib plates and the axial rib plates arranged near the window; (v) eliminating the supporting piece on the tooling piece and withdrawing the tooling piece from the flange on either end of the drum body to finish producing the hot coiler drum.