ES344413A3 - Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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GKN Somerset Wire Ltd
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GKN Somerset Wire Ltd
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Priority to ES344413ApriorityCriticalpatent/ES344413A3/en
Publication of ES344413A3publicationCriticalpatent/ES344413A3/en
Heat Treatment Of Strip Materials And Filament Materials
(AREA)
Ropes Or Cables
(AREA)
Abstract
Procedure to reduce the relaxation under tension, of wires used as tendons in the prestressed concrete, especially of current carbon steel wires, with a carbon content of the order of 0.35 to 0.9%, exposed to a stretching operation cold by advancing said wire through stretching means by the application of tension, characterized in that it comprises the operations of heating the continuous segments of wire comprised between the drawing means and a collecting means, while said segment is subjected at said stretching tension, at an annealing temperature of the order of 150º to 500º c, which depends, for wires of the same analysis, of said stretching tension and of the time during which the segment is subjected to the tempering temperature, with the in order to communicate a permanent elongation to said segment in the order of 1 to 5%, reduce the local tensions and reduce the relaxation under tension of said a lambre less than 3% is subjected, at room temperature, to an initial load of at least 70% of its tensile strength and maintained at a constant length for one thousand hours. (Machine-translation by Google Translate, not legally binding)
ES344413A1967-08-241967-08-24Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
ExpiredES344413A3
(en)
Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
Procedure to reduce the relaxation under tension, of wires used as tendons in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
A procedure with your device to increase the limit of elasticity, the limit of stretching and, eventually, the resistance to the breakage of steel material. (Machine-translation by Google Translate, not legally binding)
Procedure to eliminate the relaxation of tensions in wires, cables and steel bars for post-compressed concrete. (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of armor supplements in the form of rods or wires for steel concrete (Machine-translation by Google Translate, not legally binding)
Installation to improve the plastic deformations of the cables and wires used in the pretensed concrete. (Machine-translation by Google Translate, not legally binding)
Method to improve the low temperature ductility properties of an alloy based on columbia (Machine-translation by Google Translate, not legally binding)
Procedure and machine for the mechanical retortion of steel profiles in cold form, in particular rods for concrete armors of less than 5 millimeters of diameter (Machine-translation by Google Translate, not legally binding)