Lock body steel easy to drill and fast in chip removal and preparation method thereof
A technology of lock body steel and steel billet, which is applied in the field of locks, can solve problems such as reduction, achieve the effects of reducing drilling resistance, inhibiting grain boundary segregation, and improving high-temperature thermoplasticity
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Embodiment 1
[0033] A lock body steel that is easy to drill and fast chip removal in this embodiment, its chemical composition is calculated by mass percentage: C: 0.012%, Si: 0.013%, Mn: 1.64%, P: 0.012%, S: 0.405 %, Bi: 0.214%, Se: 0.0093%, T[O]: 0.0045%, B: 0.0056%, and the rest are Fe and unavoidable impurities.
Embodiment 2
[0035] A lock body steel that is easy to drill and fast chip removal in this embodiment, its chemical composition is calculated by mass percentage: C: 0.018%, Si: 0.031%, Mn: 1.77%, P: 0.025%, S: 0.461 %, Bi: 0.197%, Se: 0.0079%, T[O]: 0.0031%, B: 0.0041%, and the rest are Fe and unavoidable impurities.
Embodiment 3
[0037] A lock body steel that is easy to drill and fast chip removal in this embodiment, its chemical composition is calculated by mass percentage: C: 0.026%, Si: 0.026%, Mn: 1.83%, P: 0.018%, S: 0.504 %, Bi: 0.153%, Se: 0.0061%, T[O]: 0.0054%, B: 0.0052%, and the rest are Fe and unavoidable impurities.
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