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QUENCHED STEEL PIPE MEMBER, VEHICLE AXLE BEAM USING QUENCHED STEEL PIPE MEMBER, AND METHOD FOR MANUFACTURING QUENCHED STEEL PIPE MEMBER
QUENCHED STEEL PIPE MEMBER, VEHICLE AXLE BEAM USING QUENCHED STEEL PIPE MEMBER, AND METHOD FOR MANUFACTURING QUENCHED STEEL PIPE MEMBER
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机译:淬火钢管构件,使用淬火钢管构件的车轴梁以及制造淬火钢管构件的方法
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摘要
A quenched steel pipe member is formed of a GI galvanized steel pipe, in a middle section in a longitudinal direction of the GI galvanized steel pipe, a cross-section perpendicular to the longitudinal direction has a substantially V shape including a contact section at which opposite parts of an inner circumferential surface of the GI galvanized steel pipe come into contact with each other, the contact section is bonded using a Fe—Zn alloy phase, and a micro Vickers hardness at a location 50 μm deep from a base material surface layer is 95% or more of a micro Vickers hardness at a location 200 μm deep from the base material surface layer.
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