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Gear steel 20CrMnTiH hardenability/macro segregation control |
FAN Bin1, LIU Li1, ZHANG Shi-yu2,3, LIU Ning-ning1, LIU Xiao-ming2, WANG Qiang2 |
1. Special Steel Division, Laiwu Branch of Shangang Co., Ltd., Jinan 271105, Shandong,China; 2. Key Laboratory of EPM, Northeast University, Shenyang 110819, Liaoning,China; 3. State Key Laboratory of Rolling and Automation, Northeast University, Shenyang 110819, Liaoning,China |
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Abstract Aiming at the large fluctuation of 20CrMnTiH hardenability of ø500 mm section recently, by changing the parameters such as pulling speed, mold electromagnetic stirring, and secondary cooling specific water, the low magnification structure, carbon segregation amount and hardenability before and after changing parameters were compared and analyzed. The results show that when the changed production parameters are used for production, the equiaxed crystal rate decreases slightly, the macro-segregation and hardenability fluctuations decrease significantly, and the product quality improves significantly. In the adjustment and comparison of production parameters, the macro-segregation and hardenability fluctuations under the electromagnetic stirring parameters of the 150 A and 1.5 Hz molds are significantly better than those under the electromagnetic stirring parameters of the 200 A and 1.5 Hz molds. Therefore, the pulling speed is 0.35 m/min, and the water volume of each section in the secondary cooling zone is 40 L/min, 21 L/min, and 13 L/min, 0.134 L/kg specific water volume of the secondary cooling zone, 150 A、1.5 Hz electromagnetic stirring in the crystallizer and 100 A、7 Hz electric stirring at the end, the high hardenability / macro segregation fluctuation of 20CrMnTiH gear steel is improved.
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Received: 31 May 2022
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[1] |
项程云.合金结构钢[M].北京:冶金工业出版社,1999.
|
[2] |
印传磊,林鹏,张洪才,等.钢中氮质量分数对含硫齿轮钢硫化物影响的试验[J].中国冶金,2020,30(7):7.
|
[3] |
尉文超, 张宵璐, 金国忠, 等. 硫化物改质对20MnCr5齿轮钢夹杂物和切削性能的影响[J]. 钢铁, 2022, 57(5): 99.
|
[4] |
魏民, 邓伟, 唐海燕, 等. 高温渗碳齿轮钢铝氮含量对奥氏体尺寸的影响[J]. 钢铁, 2022, 57(12): 141.
|
[5] |
李尧, 成国光, 鲁金龙, 等. 20CrMnTi齿轮钢中TiN夹杂物的特征与分布[J]. 中国冶金, 2020, 30(12): 28.
|
[6] |
曾耀先. 含硫齿轮钢20CrMnTiH洁净度控制[J]. 钢铁, 2021, 56(2): 76.
|
[7] |
魏民, 李海洋, 董延楠, 等. 连铸高铝氮积齿轮钢第三脆性区形成机制与控制[J]. 中国冶金, 2022, 32(9): 64.
|
[8] |
郭龙鑫,庞洪轩,王晓英,等.含硫齿轮钢中(CaO)x(Al2O3)y和CaS的形成机理与控制[J].河北冶金,2021(11):24.
|
[9] |
刘海宁,王郢,李仁兴,等.PMO凝固均质化技术在20CrMnTi齿轮钢上的应用[J].钢铁,2019,54(6):10.
|
[10] |
王晓英,颜慧成,仇圣桃.基于微观偏析模型的Mn-Cr系齿轮钢淬透性带宽[J].钢铁,2016,51(10):54.
|
[11] |
陈亮.小方坯连铸20CrMnTiH齿轮钢宏观偏析控制[J].钢铁钒钛,2019,40(4):110.
|
[12] |
PAN Z X,WU J L,PAN G Y,et al. Development and application of new high-heat conductivity tamped charcoal material[J]. Liugang Science and Technology,2009.
|
[13] |
陈国民.齿轮钢材和热处理质量及其控制(一)[J].汽车工艺与材料,2003(1):1.
|
[14] |
SUN H,ZHANG J. Macrosegregation improvement by swirling flow nozzle for bloom continuous castings[J].Metallurgical and Materials Transactions B,2014,45(3):936.
|
[15] |
张静,杨龙,吴会平.电磁搅拌作用下水口深度对液面波动的影响[J].钢铁,2016,51(3):32.
|
[16] |
谢海平,杨庆敏,刘骅震,等.窄淬透性齿轮钢20CrMnTiH5工艺研究[J].中国冶金,2013,23(7):24.
|
[17] |
刘宝喜,高彩茹,郑文超,等.高韧性桥梁钢Q420qD的开发[J].中国冶金,2018,28(2):67.
|
[18] |
左秀荣,宋天福,薛向欣,等.SCM822H钢淬透性分布范围的控制[J].钢铁研究学报,2004,16(2):3.
|
[19] |
龚志翔,陈刚,焦兴利,等.结晶器电磁搅拌对ø450 mm连铸圆坯组织和夹杂物的影响[J].特殊钢,2004,25(4):35.
|
[20] |
孙海波,李烈军,吴学兴, 等.基于M-EMS工艺优化的齿轮钢偏析及淬透性带宽控制[J].钢铁,2018,53(8):55.
|
[21] |
全国钢标准化技术委员会金相检验方法分会. GB/T 226-2015, 钢的低倍组织及缺陷酸蚀检验法[S]. 北京:中国标准出版社,2016.
|
[22] |
山东钢铁股份有限公司.Q/370100SDGT 153-2021, 20CrMnTiH(S)系列微钛齿轮钢热轧圆钢[S]. 北京:中国标准出版社,2021.
|
[23] |
Beitelman L.Continuous casting of steel billets with an in-mold dual-coil electromagnetic stirring system[J].Electromagnetic Processing of Materials,1997,80:2.
|
[24] |
黄尊贤,朱祖民.电磁搅拌在板坯连铸机上的应用[J].宝钢技术,1994(3):51.
|
[25] |
杨晓枝.电磁搅拌对连铸方坯质量的影响[J].连铸,2000(4):2.
|
[26] |
ZHANG Z F, LI T J,WEN B, et al. Electromagnetic continuous casting by imposing multi-electromagnetic field[J].Transactions of Nonferrous Metals Society of China,2000(6):741.
|
[27] |
康吉柏, 王卫领, 罗腾飞,等. 20CrMnTi钢160 mm×160 mm方坯内部质量控制[J]. 钢铁, 2021, 56(2): 82.
|
[28] |
牛亮, 赵俊学, 仇圣桃,等. 偏心M-EMS作用下连铸圆坯流动-传热模拟[J]. 钢铁, 2020, 55(9): 49.
|
[29] |
王超,张慧,王明林,等. 电磁搅拌下圆坯结晶器内卷渣现象的物理模拟[J]. 钢铁, 2014, 49(6): 48.
|
[30] |
左小坦, 陈永峰, 张洪彪, 等. 连铸工艺参数对40Cr圆坯碳偏析的影响[J]. 中国冶金, 2020, 30(6): 97.
|
[31] |
吴春雷, 刘晓明, 李德伟, 等. 电磁旋流水口连铸技术研究进展[J]. 连铸, 2022(4): 8.
|
[32] |
尹修刚. 改善齿轮钢SAE8620H碳偏析的连铸工艺研究及应用[J]. 连铸, 2022(2): 55.
|
[33] |
何建国, 邓安元, 许秀杰, 等. 电磁搅拌宽厚板结晶器内钢液流动和液面波动[J]. 连铸, 2022(4): 50.
|
[34] |
Choudhary S K,Ganguly S.Morphology and segregation in continuously cast high carbon steel billets[J]. Transactions of the Iron and Steel Institute of Japan,2007,47(12):1759.
|
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