PRODUCTION OF CHANNEL STEEL

PURPOSE:To produce inexpensively a channel steel by forming a web part and a pair of flange parts which have the same shape and are connected to each other linearly via projecting parts from a billet and bending the flange parts perpendicularly to the web part. CONSTITUTION:The billet is rolled by c...

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Bibliographic Details
Main Authors SUZUKI MICHIHIKO, FURUTA OSAMU
Format Patent
LanguageEnglish
Published 11.12.1985
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:PURPOSE:To produce inexpensively a channel steel by forming a web part and a pair of flange parts which have the same shape and are connected to each other linearly via projecting parts from a billet and bending the flange parts perpendicularly to the web part. CONSTITUTION:The billet is rolled by calibers 10 of an upper roll 8 and a lower roll 9 to form an intermediate product 2 having the web part 4 and a pair of the flange parts 6 which have the same wall thickness as the size of a product and are connected linearly to each other by projecting parts 6 formed perpendicularly to the points corresponding to corner angle parts 5. Recesses 7 having the radius of curvature of >=2 times the thickness of the parts 3 are preliminarily formed on the rear side of the parts 6. The product 2 is then sandwiched by pinch rollers and the flange parts 3 are stepwise formed by a projecting type roller 13 and a recessed type roller 14 disposed above and below and are thereby made perpendicular to the web part 4 without changing the thickness, by which the channel steel having the flange parts 3 parallel with each other is formed.
Bibliography:Application Number: JP19840107233