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山东钢铁股份有限公司,莱芜,271105
收稿:2022-03-08,
网络首发:2022-09-28,
纸质出版:2022-09-28
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梁娜, 刘永昌, 王升. 汽车零部件用45Mn2R硫系易切削钢的开发[J]. 特殊钢, 2022,43(5):51-54.
梁娜, 刘永昌, 王升. Development of 45Mn2R Sulfur Free-Cutting Steel for Automobile Parts[J]. Special Steel, 2022, 43(5): 51-54.
梁娜, 刘永昌, 王升. 汽车零部件用45Mn2R硫系易切削钢的开发[J]. 特殊钢, 2022,43(5):51-54. DOI:
梁娜, 刘永昌, 王升. Development of 45Mn2R Sulfur Free-Cutting Steel for Automobile Parts[J]. Special Steel, 2022, 43(5): 51-54. DOI:
采用≥40%铁水-50 t EAF-LF-VD-180 mm ×220 mm铸坯-轧制流程开发了45Mn2R钢Φ40~50 mm轧材。通过控制EAF终点[C
]
≥0.10%
[P
≤0.015%
出钢温度1620~1660℃
出钢过程用“增碳剂+复合脱氧剂(15%Ca-12%Al-45%Si)+合成渣(50%CaO-34%Al
2
O
3
-4%MgO)”预脱氧,Ca处理前钢水S含量≤0.010%
Ca处理20 min后喂S线,VD后软吹25~30 min等工艺措施,提升钢的纯净度和可浇性。结果表明,生产的45Mn2R钢(/%:0.43~0.46C
0.22~0.27Si
0.009~0.017P
0.065~0.086S
0.32~0.36Cr
0.003~0.010Ti
0.013~0.034Als)具有良好的综合性能,各项指标满足用户要求。
The 45Mn2R steel Φ40-50 mm rolled product is developed by ≥ 40% hot metal- 50 t EAF-LF-VD-180 mm x 220 mm cast billet-rolling flow sheet. The cleanliness and casting ability are improved by controlling EAF end [C
≥ 0.10%
≤ 0.015%
tapping temperature 1 620-1 660 °C
preliminay deoxidation using " recaburizing agent + (15%Ca-12%Al-45%Si) compound deoxidation reagent + (50%CaO-34%A1
-4%MgO) synthetic slag" during tapping
S content in metal ≤ 0.010% before Ca treatment
feeding S wire after Ca treatment for 20 min
soft blowing for 20 min after VD etc process measure. Results show that produced 45Mn2R steel (/% : 0.43-0.46C
0.22-0.27Si
0.009-0.017P
0.065-0.086S
0.32-0.36Cr
0.003-0.010Ti
0.013-0.034AIs) has better comprehensive properties to meet user requiremen
t.
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