MANUFACTURE OF STEEL WIRE FOR SPRING WITH SUPERIOR SETTLING RESISTANCE

MANUFACTURE OF STEEL WIRE FOR SPRING WITH SUPERIOR SETTLING RESISTANCE

PURPOSE:To obtain a steel wire for a spring with superior settling resistance used as the material of a cold formed suspended spring for a car by tempering a wire rod while plastically working it with dies at a prescribed reduction rate of area. CONSTITUTION:A wire rod straightened almost perfectly...

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Hauptverfasser: KOKITA HIDEO, TAKAKURA SEIZOU, MURAI TERUYUKI
Format: Patent
Sprache:eng
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CHEMISTRY
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
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creator KOKITA HIDEO
TAKAKURA SEIZOU
MURAI TERUYUKI
description PURPOSE:To obtain a steel wire for a spring with superior settling resistance used as the material of a cold formed suspended spring for a car by tempering a wire rod while plastically working it with dies at a prescribed reduction rate of area. CONSTITUTION:A wire rod straightened almost perfectly with a straightener is fed to a heater and hardened. The hardened wire rod is immediately fed to a heater and heated to the tempering temp. During the heating for tempering, the rod is plastically worked with dies or roller dies at >=10% reduction rate of area, so the rod is tempered while producing a strain in the rod, and it is cooled to ordinary temp. By this method a steel wire for a spring with superior settling resistance used as the material of a cold formed suspended spring for a car is obtd.
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CONSTITUTION:A wire rod straightened almost perfectly with a straightener is fed to a heater and hardened. The hardened wire rod is immediately fed to a heater and heated to the tempering temp. During the heating for tempering, the rod is plastically worked with dies or roller dies at &gt;=10% reduction rate of area, so the rod is tempered while producing a strain in the rod, and it is cooled to ordinary temp. 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subjects CHEMISTRY
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
title MANUFACTURE OF STEEL WIRE FOR SPRING WITH SUPERIOR SETTLING RESISTANCE
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