Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring
Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
11.08.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 mum or more is 5 particles/100 mum2 or less. |
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Bibliography: | Application Number: US20040508945 |