|
|
Analysis of endface cracks and improvement measures for large size AISI 4130 continuous casting billets |
LENG Yong-lei |
Research and Development Department,Chengde Jianlong Special Steel Co., Ltd., Chengde 067200,Hebei,China |
|
|
Abstract Crack formation mechanism and the slow cooling process of the cast billet were systematically studied for the problem of crack defects found on the end face of ø600 mm specifications AISI 4130 continuous cast billet after sawing. The research results show that after slow cooling, there are still large tissue and thermal stresses in the cast billet, and as the sawing progresses, stresses are concentrated, cracking and extending at the weakest point, thus forming stress cracks. By modifying the slow cooling pit, adding insulation caps at both ends of the pit and adjusting the slow cooling process of the continuous casting round billet, the internal stress of the billet was greatly reduced and the product qualification rate was significantly improved.
|
Received: 31 January 2022
|
|
|
|
[1] |
马玉超,王万春,吕秋影.锻造油气阀体用AISI 4130热轧圆钢的开发生产实践[J].山东冶金,2021,43(5):14.
|
[2] |
段卫平,袁航,李京社,等.30CrMo精冲钢连铸板坯高温力学性能研究[J].特殊钢,2021,42(5):65.
|
[3] |
李刚,丁文彬,张朝磊,等.大容积无缝气瓶用4130X钢ø600 mm连铸圆坯研发[J].特殊钢,2022,43(1):44.
|
[4] |
赵欣锋.薄板连铸连轧30CrMo钢组织性能研究[J].铸造技术,2018,39(3):613.
|
[5] |
王葛,王莉莉,高静娜,等.30CrMo钢大直径厚壁压力气瓶淬火过程数值模拟[J].钢铁,2015,50(2):61.
|
[6] |
左帅,张学慧,石晓钘.Q345R钢板探伤不合的原因分析与改进[J].河北冶金.2021(9):62.
|
[7] |
李鹤飞.高强钢断裂韧性与裂纹扩展机制研究[D].合肥:中国科学技术大学,2019.
|
[8] |
谢仲豪,何杨,刘建华,等.大断面连铸圆坯中心裂纹的成因和控制研究[J].炼钢,2021,37(3):51.
|
[9] |
卞皓.65Mn热轧带钢开裂缺陷分析及控制[J].中国冶金,2019.29(5):74.
|
[10] |
张锦兴,孔明姣,任树洋,等.塑料模具钢SM50钢板表面裂纹成因及控制措施[J].中国冶金,2019,29(4):70.
|
[11] |
王强,刘忠满,郑治秀,等.低合金热轧中厚板探伤不合原因分析与改善[J].河北冶金,2021(7):71.
|
[12] |
赵世忠,谭俊敏.天津钢管公司连铸圆坯表面裂纹特征和预防措施[J].特殊钢,2004,25(1):56.
|
[13] |
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.
|
[14] |
黎建全,陈登福,吴国荣,等. 37Mn2钢连铸圆坯的二次冷却制度[J]. 钢铁, 2014, 49(1): 45.
|
[15] |
王雪峰. 连铸圆坯中夹杂物的综合测定与分析[J]. 钢铁, 2010, 45(7): 41.
|
[16] |
张新文, 江宏亮, 轩康乐, 等. 热轧圆钢Q345E表面裂纹的研究与控制[J]. 中国冶金, 2021, 31(4): 44.
|
[17] |
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.
|
[18] |
刘超群,王宝,马丙涛,等. 35CrMnSiA大规格连铸圆坯加热工艺的改进[J]. 中国冶金, 2015, 25(2): 44.
|
[19] |
张露,孙开明. 石油管用连铸圆坯质量控制技术的新进展[J]. 中国冶金, 2010, 20(4): 33.
|
[20] |
牛艳娥,赵芃沛,李宁,等.国内外超高强度钢的研究现状及应用[J].兵器装备工程学报,2021,42(7):274.
|
[21] |
张新文,李刚,轩康乐.2.25Cr-1Mo钢连铸圆坯端面缺陷分析和预防[J].物理测试,2019,37(5):43.
|
[22] |
李龙,李虎,侯葵.天钢连铸板坯中心裂纹的成因分析[J].天津冶金,2012(2):23.
|
[23] |
于永川.大圆坯缓冷能力与工艺布置的研究[J].四川冶金,2016,38(4):21.
|
[24] |
李金浩.石油套管用钢的开发生产及裂纹原因分析[J].轧钢,2018,35(4):34.
|
[25] |
XU Y,XU R J,FAN Z J,et al.Analysis of cracking phenomena in continuous casting of 1Cr13 stainless steel billets with final electromagnetic stirring[J].International Journal of Minerals,Metallurgy, and Materials, 2016,23(5):534.
|
[26] |
CAI L,WANG X,WEI J, et al. Meshless method modeling for crack initiation and propagation of continuous casting billets[J]. Metallurgical and Materials Transactions B,2021,52:3302.
|
[27] |
Jo J H, Park M S, Yi K W. Numerical analysis on crack generation behavior of hypo peritectic steel in continuous casting pro-cess[J].Metals and Materials International,2021, 27:4586.
|
[28] |
李元松,徐晓晖,谭江华.30CrMo钢在H2S和H2O介质中的腐蚀行为研究[J].机械工程与自动化,2017(5):121.
|
[29] |
张明海.中高碳钢连铸坯缓冷技术开发及应用[J].企业实践,2016:178.
|
[30] |
李万国.连铸后工序铸坯温度与冷却控制[J].连铸,2016(6): 31.
|
[31] |
沈世雕,黄福祥,陈书浩,等.堆垛缓冷对连铸坯中心偏析的影响[J].钢铁,2010,45(10):47.
|
[32] |
付勇涛,邱长生,刘武群,等.35CrNiMoV钢铸坯断裂原因分析[J].钢铁,2006,41(9):78.
|
[33] |
张恒星,衷水平,陈杭,等.不同渣型缓冷制度下铜渣的热场仿真与分析[J].中国冶金,2020,30(10):76.
|
[34] |
刘海波.堆垛缓冷对Q550D-Z钢板组织性能的影响[J].中国冶金,2014,24(3):31.
|
[35] |
杜一哲,李丽,汪勤政,等.特厚板坯单辊重压下铸坯温度与应力的分析[J].连铸,2021(1):47.
|
[36] |
康丽,王洋,王恩刚,等.结晶器内连铸坯的热和应力状态数值模拟[J].中国冶金,2007,16(5):30.
|
[1] |
Fan Qian, Hua-long Li, Wen-gang Yang, Hai-rong Guo, Guo-qi Liu, Hong-xia Li, Bei-yue Ma. Corrosion resistance of BN–ZrO2 ceramics with different additives by molten steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(7): 1101-1109. |
[2] |
ZHANG Xiang,XIE Qinghua,NI Peiyuan,LI Ying. Flow behavior of molten steel in SEN during fullnozzle selfswirling flow continuous casting[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(7): 629-638. |
[3] |
ZHAO Xianjiu1,2,ZHANG Jieyu2,3,LI Chuanjun2,3. Analysis of formation mechanism about Ca-Mg-Al spineltype inclusions in cold thin rolling sheet[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(7): 664-671. |
[4] |
SHANG Ting-rui, WANG Wei-ling, KANG Ji-bai, ZHU Miao-yong, LUO Sen. In situ observation of solidification under transient and average cooling rate of 20CrMnTi continuous casting[J]. Iron and Steel, 2022, 57(7): 73-85. |
[5] |
CHEN Bin, LI Hai-bo, JI Chen-xi, LIU Guo-liang, ZHOU Hai-chen. Influence of casting parameters on level fluctuations and its industrial application[J]. Iron and Steel, 2022, 57(7): 86-94. |
[6] |
KANG Yong-lin, ZHU Guo-ming, JIANG Min, WANG Guo-lian, LIU Peng-tao, XU Hai-wei, XIE Cui-hong, WEI Yun-fei, SHEN Kai-zhao, LIU Yang. Slab continuous casting by big roll heavy reduction and extra thick plate rolled by low compression ratio[J]. Iron and Steel, 2022, 57(7): 95-105. |
|
|
|
|