STEEL WIRE WITH EXCELLENT FORMABILITY INTO SPRING AND PRODUCTION THEREOF

A steel wire for springs which is excellent in the formability into springs and the prevention of environmental pollution. The wire has a surface coated with an amino acid compound after drawing, quenching or tempering, and the coating serves to improve the lubricity and prevent the seizing and chat...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAMOTO, YOSHIYUKI, ITAMI WORKS OF SUMITOMO, NAKAMURA, TOSHIYA, ITAMI WORKS OF SUMITOMO, MURAI, TERUYUKI, ITAMI WORKS OF SUMITOMO
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FUELS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LUBRICANTS LUBRICATING COMPOSITIONS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PUNCHING METAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WORKING OR PROCESSING OF METAL WIRE
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Beschreibung
Zusammenfassung:	A steel wire for springs which is excellent in the formability into springs and the prevention of environmental pollution. The wire has a surface coated with an amino acid compound after drawing, quenching or tempering, and the coating serves to improve the lubricity and prevent the seizing and chattering in the step of forming into springs. Although the amino acid compound is thermally decomposed in the stress-relieving annealing step after the spring forming step, it does not emit any harmful gas thereby.