锻压技术

锻造对12Cr2Ni4A钢棒料性能的影响

英文标题：Influence of forging on properties of 12Cr2Ni4A steel bar

作者：于淼

关键词：齿轮疲劳夹杂物锻造冲击性能

分类号：TG123.32

出版年,卷(期):页码：2022,47(4):74-77

摘要：

齿轮由于原材料存在大尺寸脆性夹杂物会产生连续疲劳断裂，为了研究锻造对夹杂物的分布和材料力学性能的影响，采用了金相、冲击、扫描电镜及能谱微区分析等方法，对问题原材料锻造后的夹杂物分布、冲击性能、断口形貌等进行了分析，并与正常原材料进行了比对。结果表明：经过锻造，夹杂物的分布明显改善，条状夹杂物已破碎，未见大尺寸超标夹杂物，夹杂物呈弥散分布，评级符合标准要求；材料的横向冲击性能改善效果显著，提升幅度达到75%。经试验和分析得出：经锻造后，棒料的夹杂物分布和冲击性能已达到正常原材料的水平，可满足齿轮的使用要求。

Continuous fatigue fracture can beformed in gears because of the large-sized brittle inclusions existing in raw materials. Therefore, in order to study the influence of forging on the distribution of inclusions and the mechanical properties of materials, the inclusions distribution, impact properties and fracture morphology of raw materials with problems after forging were analyzed by metallography, impact, SEM and EDS, which were analyzed and compared with the normal raw materials. The results show that after forging, the distribution of inclusions is improved significantly, the strip inclusions are broken, the oversized inclusions disappear, the inclusions is distributed diffusely, and the rating meets the standard requirements. The lateral impact properties of the material is improved significantly and increased by 75%. The conclusion after testing and analysis shows that after forging, the inclusions distribution and the impact properties of the bar reach the level of the normal raw materials, which meet the using requirements of gear.

基金项目：

作者简介：于淼（1981-），男，学士，正高级工程师 E-mail：3436667625@qq.com

参考文献：

[1]GJB 1951—1994，航空用优质结构钢棒规范[S].

GJB 1951—1994，Spacification for quality structure steel bars for aviation[S].

[2]赵振业，姚俊臣，丁传富，等.中国航空材料手册（第1卷）[M].北京：中国标准出版社，2002.

Zhao Z Y, Zhao X C, Ding C F, et al. China Aeronautical Materials Handbook(Volume 1)[M]. Beijing: China Standards Press，2002.

[3]GB/T 10561—2005，钢中非金属夹杂物含量的测定标准评级图显微检验法[S].

GB/T 10561—2005，Steel—Determination of content of nonmetallic inclusions—Micrographic method using standards diagrams[S].

[4]赵沛，成国光，沈甦.炉外精炼及铁水预处理实用技术手册[M].北京：冶金工业出版社，2004.

Zhao P, Cheng G G, Shen S. Secondary Refining ＆ Iron Water Pretreatment Practical Technical Manual [M]. Beijing: Metallurgical Industry Press,2004.

[5]杨勇,刘浏，崔京玉.转炉生产20CrMnTi齿轮钢中夹杂物及相分析研究[J].钢铁，2010，（10）:41-46.

Yang Y, Liu L, Cui J Y.Study on inclusions and phase analysis of BOF produced 20CrMnTi gear steel[J]. Iron and Steel，2010，（10）: 41-46.

[6]李炯辉，林德成，丁惠麟，等.金属材料金相图谱[M].北京：机械工业出版社，2006.

Li J H, Lin D C, Ding H L，et al. Metallographic Atlas of Metal Materials [M]. Beijing: China Machine Press，2006.

[7]薄鑫涛.非金属夹杂物评定类别[J].热处理，2013，28(5)：26.

Bo X T. Evaluate category of non-metallic inclusions [J]. Heat Treatment, 2013，28(5)：26.

[8]乙继海,王杰，刘贺.45Cr4NiMoV支乘辊轴颈根部裂纹原因分析[J].一重技术，2011，（2）:27-30.

Yi J H, Wang J, Liu H. Crack cause analysis happened on root of 45Cr4NiMoV back-up rool neck[J].CFHI Technology，2011，（2）:27-30.

[9]王春芳，李继康，王哲.50CrVA电机轴断裂原因分析[J].物理测试，2020，38(5)：9-13.

Wang C F, Li J K, Wang Z. Analysis on fracture cause of 50CrVA motor shaft[J].Physics Examination and Testing，2020，38(5)：9-13.

[10]管晨冉，杨卯生，高鹏.32Cr3MoVE轴承钢旋弯疲劳特性及裂纹萌生扩展行为[J].钢铁研究学报，2020,32（10）：916-924.

Guan C R, Yang M S, Gao P. Rotary benging fatigue characteristics and crack initiation and propagation behavior of 32Cr3MoVE bearing steel[J].Journal of Iron and Steel Research，2020, 32（10）：916-924.

[11]杨帅，张启飞，卢昀，等.氧化铝夹杂破碎与弥散行为的试验研究[J].机械工程学报，2021,57（22）：172-183.

Yang S, Zhang Q F,Lu Y, et al .Experimental study on crushing and dispersion behavior of alunina inclusions[J]. Journal of Mechanical Engineering, 2021, 57（22）：172-183.

[12]张跃，王岩，张灵宇，等.第三代核电蒸汽发生器管板锻件制造工艺[J].锻压技术，2021，46(10)：44-48.

Zhang Y, Wang Y, Zhang L Y, et al. Manufacturing process on tube plate forging for the third generation nuclear steam generator [J].Forging ＆ Stamping Technology，2021，46(10)：44-48.

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