Manufacturing method for reinforcement with anchorage zone

Provided is a manufacturing method for reinforcement with anchorage zone. It can form an appropriate shape of diameter-enlarging zone as an anchorage portion. The method comprises the following manufacturing process: heating the end portion of the reinforcing steel and carrying out high temperature...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGISHI, MASAAKI, KITAYAMA, NOBUYOSHI, MAENOSONO, TSUKASA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BUILDING BUILDING MATERIALS FIXED CONSTRUCTIONS FORGE FURNACES FORGING HAMMERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING STRUCTURAL ELEMENTS TRANSPORTING
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Beschreibung
Zusammenfassung:	Provided is a manufacturing method for reinforcement with anchorage zone. It can form an appropriate shape of diameter-enlarging zone as an anchorage portion. The method comprises the following manufacturing process: heating the end portion of the reinforcing steel and carrying out high temperature upset forging process; compressing the heated end portion in the axial direction to enable it to be plastically deformed to increase its outside diameter to integrally form the diameter-enlarging zone; carrying out heating process to increase temperature of the end portion of the reinforcing steel continuously from the end-surface. From the end-surface of the reinforcing steel to 2.0 D distance in the axial direction, the temperature is greater than or equal to 1300 DEG C and below the melting point of reinforcing steel. From the end-surface of the reinforcing steel to 5.0 D in the axial direction, the temperature is greater than or equal to temperature AC3 of the reinforcement material and less than or equal to 12