MANUFACTURE OF HIGH-STRENGTH BOLT

• Main Authors: NISHIO HARUTAKA, NAKAMURA SADAYUKI, KIMURA TOSHIMITSU
• Format: Patent
• Language: English
• Published: 28.02.1995
• Edition: 6
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PURPOSE:To prolong the life of header tool and provide a manufacturing method of a high-strength bolt by heating just before processing a high-strength alloy steel wire rod which is manufactured by cooling control and aging treatment after hot rolling with a header and forming it. CONSTITUTION:The a...