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Application filed by Neturen Co LtdfiledCriticalNeturen Co Ltd
Priority to MYPI9401719priorityCriticalpatent/MY115314A/en
Publication of MY115314ApublicationCriticalpatent/MY115314A/en
Heat Treatment Of Strip Materials And Filament Materials
(AREA)
Abstract
A HIGH STRENGTH STEEL BAR OR WIRE HAVING BETTER WELDABILITY FOR PRESTRESSED CONCRETE IS IMPROVED IN THE RELAXATION AT HIGH TEMPERATURE THUS INCREASING THE TOUGHNESS. IT CONTAINS 0.3 TO 2.0 OF SILICON, 0.08 TO 0.35 OF MOLYBDENUM AND PREDETERMINED AMOUNTS OF CARBON AND MANGANESE. IF DESIRED, IT MAY CONTAIN TITANIUM AND BORON. IN PARTICULAR, THE SILICON AND THE MOLYBDENUM ARE NOT LESS 1 IN THE SI + 4MO COMBINATION. AT HEAT TREATMENT, THE STELL BAR OR WIRE IS RAPIDLY HEATED WITHIN 20 SECONDS SO THAT A FINE AUSTENITE MICROSTRUCTURE OF THE GRAIN SIZE NUMBER 9.0 OR MORE IS FORMED. MORE PREFERABLY, WHILE THE STEEL BAR OR WIRE IS HEATED TO A TEMPERING TEMPERATURE, IT IS LOADED WITH A BENDING STRAIN OF NOT MORE THAN 3 BEFORE COOLED DOWN RAPIDLY.
MYPI94017191994-07-011994-07-01High strenght, high weldability steel bars and wires for prestressed concrete
MY115314A
(en)
Long Product for Fabrication by Cold Forming, Especially by Cold Stamping, of Complex Products Such as Bolts and Procedure for Cold Forming a Complex Product