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WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT
WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT
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机译:具有优异的氢延迟断裂抗性的电线杆,相同制造方法,使用相同强度的高强度螺栓和制造螺栓的方法
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摘要
The present invention relates to a wire rod used in bolts for automobile engines, for example, and more specifically to a wire rod having an improved resistance to hydrogen delayed fracture, to a manufacturing method for same, to a bolt using same and a method for manufacturing the bolt. Provided are a high strength wire rod having a superior resistance to hydrogen delayed fracture and a method for manufacturing same, a high strength bolt using the wire rod and a method for manufacturing same, wherein the wire rod comprises, 0.3-0.7 wt% C, 0.05-2.0 wt% Si, 0.7-1.5 wt% Mn, 0.01-0.1 wt% Ni, and 30-70 ppm La, and the remainder thereof is comprised by Fe and inevitable impurities.
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