METHOD FOR BENDING CABINET FOR REFRIGERATOR USING PRE-COATED STEEL PLATE

摘要

PURPOSE: A cabinet bending method is provided to shorten production time and to obtain improved quality by allowing a pre-coated steel metal to be bent and formed into a cabinet for a refrigerator after coating the steel metal. CONSTITUTION: A pre-coated steel plate is bent and formed into a cabinet for a refrigerator. The pre-coated steel plate is divided into a first bent surface(101), a second bent surface(102) and a third bent surface(103) to a predetermined width from an end thereof. A first bent portion(104) is upwardly bent and formed at a connection point between the first bent surface(102) and the third bent surface(104). A second bent portion(105) is downward bent and formed at a connection point between the second bent surface(102) and the third bent surface(103). A third bent portion(106) is upwardly bent and formed at a connection point between the second bent surface(102) and the second bent portion(105). Displacement amount depending on shrinkage/relaxation of a coating film during bending of the pre-coated steel plate is calculated. The pre-coated steel plate is interrelatedly bent through multi-stages such that the displacement amount corresponds to that of an adjacent bent portion.