利用电子扫描电镜、拉伸仪、耐疲劳性能试验机等分析测试方法研究铅浴等温淬火工艺对超细高强高碳钢丝组织和力学性能的影响.结果表明:对含碳量0.92％、直径Φ0.84 mm的钢丝,升高加热温度、降低铅浴温度、提高过冷度有利于奥氏体化均匀,促进珠光体转变,导致先共折铁素体和二次网状渗碳体减少、珠光体片层间距减小、晶粒尺寸约20～30 μm,后道湿拉拔至直径Φ0.12 mm,断丝率降低至4～7次/t,钢丝最终强度达4080 MPa.
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