硬脆钢50SiMnVB激光预控裂纹工艺试验研究

doi:10.3969/j.issn.1000-1093.2018.10.016

兵工学报 ›› 2018, Vol. 39 ›› Issue (10): 1997-2005.doi: 10.3969/j.issn.1000-1093.2018.10.016

硬脆钢50SiMnVB激光预控裂纹工艺试验研究

石岩^1,2，刘东炜^1,2，刘佳^1,2，李凌宇^1,2

(1.长春理工大学机电工程学院, 吉林长春 130022; 2.国家国际科技合作基地 (光学), 吉林长春 130022)

收稿日期:2017-12-04 修回日期:2017-12-04 上线日期:2018-11-19
作者简介:石岩(1972—), 男, 教授，博士生导师。E-mail: shiyan@cust.edu.cn
基金资助:
吉林省科技厅重点科技攻关项目（20170204065GX、20180201063GX）；国家重点研发计划“增材制造与激光制造”专项项目（2017YFB1104601）

Research on Laser Crack-precontrolling Technology for 50SiMnVB

SHI Yan^1,2, LIU Dong-wei^1,2, LIU Jia^1,2, LI Ling-yu^1,2

(1.College of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin, China;2.National Base of International Science and Technology Cooperation for Optics, Changchun 130022, Jilin, China)

Received:2017-12-04 Revised:2017-12-04 Online:2018-11-19

摘要/Abstract

摘要： 为改善传统裂解槽加工效率低、后续加工困难等问题，采用高功率CO₂激光器对硬脆钢50SiMnVB进行激光预控裂纹工艺试验。采用金相显微镜、扫描电镜以及显微硬度测试仪等设备，对激光深熔区的微观组织形貌、裂纹断口形貌以及显微硬度分布进行了测试分析。利用数值模拟软件SYSWELD对50SiMnVB钢激光深熔处理过程的温度场和应力场分布进行模拟分析。结果表明：由于深熔过程受温度梯度和应力梯度的影响，深熔区产生淬硬脆化裂纹；其开裂机理为深熔区底部出现气孔和微裂纹，裂纹再沿中心向上扩展形成宏观裂纹；经工艺试验与模拟仿真对比后得出最优工艺参数范围，即激光功率为3.0 kW，扫描速度范围为1.0~4.5 m/min，所对应的预制裂纹深度范围约为3~7 mm.

关键词: 裂解加工, 激光预控裂纹, 微观组织, 断口形貌, 显微硬度, 数值模拟

Abstract: The cracks in 50SiMnVB steel are experimentally controlled by using high power CO₂ laser to improve the processing efficiency and subsequent processing of fracture splitting groove. The laser deeper melting zone of micro-structure, fracture morphology and micro-hardness distribution are analyzed by means of metallographic microscope, scanning electron microscope and micro-hardness tester, respectively. The numerical simulation software SYSWELD is used to simulate the distributions of temperature field and stress field in 50SiMnVB steel during laser deeper melting. The results show that the hardened brittle cracks are generated in the deeper melting zone due to temperature and stress gradient. The cracking mechanism is that the pores and micro-cracks arise at the bottom of the deeper melting zone, and the cracks expand along the center to form the macroscopic cracks. The optimal range of processing parameters is obtained by the experiment and simulation with laser power of 3.0 kW, and scanning speed of 1.0- 4.5 m/min. The corresponding depth range of prefabricated crack is about 3-7 mm. Key

Key words: splittingprocessing, laserpre-controlledcrack, micro-structure, fracturemorphology, micro-hardness, numericalsimulation

中图分类号:

TG665

石岩，刘东炜，刘佳，李凌宇. 硬脆钢50SiMnVB激光预控裂纹工艺试验研究[J]. 兵工学报, 2018, 39(10): 1997-2005.

SHI Yan, LIU Dong-wei, LIU Jia, LI Ling-yu. Research on Laser Crack-precontrolling Technology for 50SiMnVB[J]. Acta Armamentarii, 2018, 39(10): 1997-2005.

参考文献

［1］ Zhang D, Harris S J, Mccartney D G, et al. The effect of laser transformation notching on the controlled fracture of a high carbon (C70S6) steel［J］. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2008, 489(1/2):273-284.
［2］寇淑清, 杨慎华, 赵庆华. 发动机连杆裂解加工初始裂纹槽几何参数研究［J］. 哈尔滨工业大学学报, 2007, 39(9):1487-1490.
KOU Shu-qing, YANG Shen-hua, ZHAO Qing-hua. Research on geometry parameters of stress-raising groove in fracture splitting processing of engine con-rod［J］. Journal of Harbin Institute of Technology, 2007, 39(9):1487-1490. (in Chinese)
［3］杨慎华, 张志强, 寇淑清. 连杆预制裂纹槽几何参数对胀裂力的影响［J］. 吉林大学学报:工学版, 2006, 36(2):195-198.
YANG Shen-hua, ZHANG Zhi-qiang, KOU Shu-qing. Influence of starting notch geometry parameters of connecting rod on its fracture splitting force［J］. Journal of Jilin University: Engineering and Technology Edition, 2006, 36(2):195-198. (in Chinese)
［4］杨慎华, 张志强, 寇淑清. 发动机连杆裂解加工关键技术的研究［J］. 内燃机工程, 2006, 27(5):80-84.
YANG Shen-hua, ZHANG Zhi-qiang, KOU Shu-qing. Study of key technology of fracture splitting of engine connecting rod［J］. Chinese Internal Combustion Engine Engineering, 2006, 27(5):80-84. (in Chinese)
［5］张志强, 郑祺峰, 赵勇, 等. 预制裂纹槽加工方法对连杆裂解加工质量的影响规律［J］. 内燃机工程, 2008,29(5):80-84.
ZHANG Zhi-qiang, ZHENG Qi-feng, ZHAO Yong, et al. Influence of machining methods on quality of connecting rod splitting process［J］. Chinese Internal Combustion Engine Engineering, 2008,29(5):80-84. (in Chinese)
［6］刘晓宁, 唐勇军, 张永俊. 电火花线切割加工连杆裂解槽技术研究［J］. 中国机械工程, 2010, 21(10):1240-1245.
LIU Xiao-ning, TANG Yong-jun, ZHANG Yong-jun. Research on the technology of connecting rod splitting groove by WEDM［J］. China Mechanical Engineering, 2010, 21(10):1240-1245. (in Chinese)
［7］ Kurz W, Fisher D J. 凝固原理［M］. 李建国, 胡侨丹, 译. 北京: 高等教育出版社，2010:1-10.
Kurz W, Fisher D J. Fundamentals of solidification［M］. LI Jian-guo, HU Qiao-dan, translated. Beijing: Higher Education Press, 2010: 1-10. (in Chinese)

［8］龚俊, 芮执元, 郎福元. 激光催裂的初步研究［J］. 甘肃工业大学学报, 1994, 20(4):44-48.
GONG Jun, RUI Zhi-yuan, LANG FU-yuan. Preliminary study of laser cracking［J］. Journal of Gansu University of Technology, 1994, 20(4):44-48. (in Chinese)

［9］石岩, 刘佳, 张宏. 30CrMnSi钢激光焊接工艺研究［J］. 兵工学报, 2010, 31(7):991-997.
SHI Yan, LIU Jia, ZHANG Hong. Research on laser welding of 30CrMnSi steel［J］. Acta Armamentarii, 2010, 31(7): 991-997. (in Chinese)

［10］朱晓英, 庄明辉, 姜春茂. 50SiMnVB壳体裂纹原因分析［J］. 精密成形工程, 2014, 6(2):51-54, 59.
ZHU Xiao-ying, ZHUANG Ming-hui, JIANG Chun-mao. Cause analysis for cracks in the 50SiMnVB shell［J］. Journal of Netshape Forming Engineering, 2014, 6(2):51-54, 59. (in Chinese)

第39卷
第10期2018 年10月兵工学报ACTA
ARMAMENTARIIVol.39No.10Oct.2018

[1]	吕代龙，陈少松，徐一航，邱佳伟. 近距耦合鸭式布局导弹气动特性[J]. 兵工学报, 2022, 43(6): 1316-1325.
[2]	徐干成，袁伟泽，陈林恒，李成学，颉旭虎，聂梦琪. NFB700高强钢板抗震塌性能[J]. 兵工学报, 2022, 43(2): 391-400.
[3]	路宽，饶翔，王花梅，张倩. 不同形式锚泊系统对海洋资料浮标水动力性能的影响[J]. 兵工学报, 2022, 43(1): 120-130.
[4]	程申申，陶如意，王浩，薛绍，林庆育. 弹丸不同结构尼龙弹带挤进过程的阻力特性[J]. 兵工学报, 2021, 42(9): 1847-1857.
[5]	王丹宇，南风强，廖昕，肖忠良，堵平，王彬彬. 考虑化学反应的大口径火炮炮口流场特性[J]. 兵工学报, 2021, 42(8): 1624-1630.
[6]	檀妹静，杨光，李宇，周禹，曹占伟，闫昊，檀姊静. 整流帽布局对全动舵附近流动结构及热环境分布规律的影响[J]. 兵工学报, 2021, 42(8): 1648-1659.
[7]	程远胜，谢杰克，李哲，刘均，张攀. 冲击波和破片群联合作用下高强聚乙烯/泡沫铝夹芯复合结构毁伤响应特性[J]. 兵工学报, 2021, 42(8): 1753-1762.
[8]	刘清扬，雷娟棉. 跨速域大后掠角近距耦合翼气动干扰特性[J]. 兵工学报, 2021, 42(7): 1412-1423.
[9]	宁子轩，王琳，程兴旺，程焕武，周哲，张斌斌，王芳，陈东萍. 微观组织对Ti6321钛合金靶板爆炸断裂失效的影响[J]. 兵工学报, 2021, 42(7): 1506-1515.
[10]	沈浩，蔡杰，吕鹏，张从林，李玉新，关庆丰. 激光工艺参数对NiCoCrAlYSi熔覆层微观组织及性能的影响[J]. 兵工学报, 2021, 42(7): 1524-1534.
[11]	杜华池，张先锋，刘闯，熊玮，李鹏程，陈海华. 弹体斜侵彻多层间隔钢靶的弹道特性[J]. 兵工学报, 2021, 42(6): 1204-1214.
[12]	马良超, 王大锋, 马冰, 陈东高, 张迎迎. 不同氮含量焊丝熔化极气体保护焊高氮钢的微观组织与力学性能[J]. 兵工学报, 2021, 42(6): 1303-1311.
[13]	王孟鑫，陈睿颖，王金相. 破片与冲击波联合作用下多孔泡沫铝夹芯复合材料板的防护性能[J]. 兵工学报, 2021, 42(5): 1041-1052.
[14]	佟鼎，田红艳，刘欣源，刘烨，高超，李欣. 进气弯管对离心压气机特性影响及弯管结构优化[J]. 兵工学报, 2021, 42(4): 706-714.
[15]	姜冬冬，薛晓春. 整装式液体发射药燃烧推进过程的内弹道特性[J]. 兵工学报, 2021, 42(4): 755-763.

硬脆钢50SiMnVB激光预控裂纹工艺试验研究

Research on Laser Crack-precontrolling Technology for 50SiMnVB

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价