METHOD FOR MANUFACTURING TUBE REINFORCED PARTIAL STRENGTH

摘要

PURPOSE: A method for manufacturing a tube of which the partial strength is reinforced is provided to reinforce partial strength using dissimilar materials and to bend the reinforcing part. CONSTITUTION: A method for manufacturing a tube of which the partial strength is reinforced comprises: a step of inserting a reinforcing material(30) into the weak point of an outer tube(10); a step of removing the gap between the outer tube and the reinforcing material by electromagnetic welding; and a step of bending the weak point of the outer tube which is reinforced by the reinforcing material. [Reference numerals] (AA) Heating; (BB) Expansion; (CC) Cooling;