Abstract：In this paper, high quality Mn-Cr system gear steels is selected as the research object. Through large-area analysis of automatic scanning electron microscope, it’s found that the equivalent size of the largest inclusion in the test steel is 34.17 μm. The Gumbel statistical extremum method is further used to predict the maximum inclusion in the Mn-Cr system gear steel. Under the condition of 99.9% probability, the detection area is about 100 000 square millimeters and the maximum inclusion size in the test steel is predicted to be 62.1μm, which satisfy industrial and routine scientific research detection and analysis.
何肖飞. 极值法在高品质齿轮钢夹杂物评价中的应用研究[J]. , 2020, 55(11): 0-0.
Xiao-Fei HE. Application Study of Extreme Value Method in Inclusion Evaluation of High Quality Gear Steel. , 2020, 55(11): 0-0.
[1] Uesugi T. Recent development of bearing steel in Japan[J]. Trans ISIJ, 1988, 28(11): 893-899.
[2] Uesugi T. Production of high-carbon chromium bearing steel in vertical type continuous caster[J]. Trans ISIJ, 1986, 26(7): 614-620.
[3] Chapetti M D, Tagawa T, Miyata T. Ultra-long cycle fatigue of high-strength carbon steels: Part II. Estimation of fatigue limit for failure from internal inclusions. Mater Sci Eng A, 2003, 356( 1-2): 236.
[4] 王新华, 姜敏, 于会香, 等. 超低氧特殊钢中非金属夹杂物研究[J]. 2015, 31(6): 1-12.
[5] Murakami Y, Beretta S. Small defects and inhomgenities in fatigue strength: experiments, models and statistical implications. Extremes, 1999, 2: 123-47.
[6] Pessard E, Morel F, Morel A, et al. Modelling the role of non-metallic inclusions on the anisotropic fatigue behavior of forged steel[J]. International Journal of Fatigue, 2011, 33: 568-577.
[7] Krewerth D, Lippmann T, Weidner A, et al. Influence of non-metallic inclusions on fatigue life in the very high cycle fatigue regime[J]. International Journal of Fatigue, 2016, 84: 40-52.
[8] 刘金鑫，冯桂萍，张龙，等. 60t LF-VD 精炼过程18CrNiMo7-6齿轮钢夹杂物的演变[J]. 特殊钢, 2016, 37(6): 5-8.
[9] 杨勇，刘浏，崔京玉. 转炉生产20CrMnTi齿轮钢种夹杂物及相分析研究[J]. 钢铁, 2010, 45(10): 41-46.
[10] 董文亮. 超低氧齿轮钢精炼渣的工艺优化及镁铝尖晶石夹杂控制研究[D]. 武汉科技大学, 学位论文, 2014.
[11] 林伟，李海波. CaO-Al2O3渣系对20CrMoH齿轮钢中总氧和硫的影响[J]. 特殊钢, 2008, 29(2): 28-30.
[12] 吴晓东，郭登仰，谈盛康，等. 20CrMo齿轮钢钙处理对夹杂物变性效果分析[J]. 金属铸锻焊技术, 2012, 41(23): 22-25.
[13] Murakami Y, Usuki H. Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels. II: Fatigue limit evaluation based on statistics for extreme values of inclusion size[J]. International Journal of Fatigue, 1989, 11(5): 299.
[14] 张继明，张建锋，杨振国，等. 高强钢中最大夹杂物的尺寸估计与疲劳强度预测[J]. 金属学报, 2004, 40(8): 846.
[15] 田超，刘剑辉，范建文，等. 采用统计极值法评价超低氧轴承钢夹杂物[J]. 钢铁研究学报, 2018, 30(2): 127-131.
[16] 李萌，朱立光，刘增勋，等. IF钢板坯内最大夹杂物粒度的预测[J]. 铸造技术, 2017, 38(1): 159-161.
[17] 王新华，李秀刚，李强，等. X80管线钢板中条串状CaO-Al2O3系非金属夹杂物的控制[J]. 金属学报, 2013, 49(5): 553-561.
[18] 何肖飞，王新华，姜敏，等. 帘线钢中氧化物夹杂在铸坯上的分布与控制[J]. 钢铁研究学报, 2015, 27(3): 19-26.
2020, Vol. 55 
