CARRYING CHANNEL MANUFACTURE METHOD AND CARRYING CHANNEL

摘要

PURPOSE: A ceiling finishing material mounting structure is provided to secure less the lower space of the ceiling slab on which the ceiling finishing material is mounted and maintains enough rigidity of the carrying channel and enhances the utilization rate of an internal space of a building. CONSTITUTION: A manufacturing method of a carrying channel(A) comprises: a ceiling hanger hooking hole forming step(S100) forming a ceiling hanger hooking hole(110) which is penetrated at regular distance on the ceiling hanger portion(10) which is the center of the steel plate(SP) by punching the upper portion of the steel plate(SP) which is uncoiled from an uncoiler; a distance controlling groove forming step(S200) forming a distance controlling groove(120) between the ceiling hanger hooking holes(110) which are formed on the steel plate(SP) by a press; a first carrying channel roll forming step(S300) of first forming the upper and lower portions on both sides of the steel plate(SP), which has the ceiling hanger hooking hole(110) and the distance controlling groove(120), into the shape of a wide valley by a first pressure roller(300); a second carrying channel roll forming step(S400) of secondly forming the upper and lower portions having the shape of a wide valley into the shape of a narrow valley by a second pressure roller(400); and a final carrying channel forming step(S500) finally forming a valley portion(20) with the upper and lower portions on both sides of the ceiling hanger hooking portion(10) by a third pressure roller(500). [Reference numerals] (S100) Ceiling hanger hooking hole forming step; (S200) Distance controlling groove forming step; (S300) First carrying channel roll forming step; (S400) Second carrying channel roll forming step; (S500) Final carrying channel forming step; (S600) Carrying channel cutting step