Research on the Relationship between Temperature and Dimension of Large-Scale Forgings in Manufacturing Process

Abstract:

In order to achieve online monitoring about hot-state dimension of large-scale forgings, a new monitoring method has been developed in this paper. The large-scale barrel-type forgings heat conduction differential equation is deduced on the basis of the heat transfer. The functional form of heat conduction equation for large-scale forgings is established. Then the relationship between temperature and dimension is solved according to the variational principle. So the dimension of the large-scale forgings is monitored by combining the relationship between temperature and dimension. The temperature is measured by sensor. As a result, the online monitoring about hot-state dimension of large-scale forgings is achieved.

• Periodical: Advanced Materials Research (Volumes 217-218)
• Pages: 763-767
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.217-218.763
• Online since: March 2011
• Authors: Yun Cun Zhang, Sha Sha Yang, Xian Bin Fu, Yan De Qi
• Keywords: Hot-State Dimension, Large-Scale Forging, Online Monitoring, Temperature Field, Variational Principle

References

[1] Zhou Z F, Zhang T. A Precision Ranger Based on the Laser with Two Longitudinal Modes[J]. SPIE, 1999, 2002: 1125-1127.

[2] Xiao Y H, Zhan Q M, Pang Q C. 3D Data Acquisition by Terrestrial Laser Scanning for Protection of Historical Buildings[A]. International Conference on Wireless Communications, Networking and Mobile Computing[C], Shanghai, Sept. (2007).

DOI: 10.1109/wicom.2007.1464

[3] Biskup K, Arias P, Lorenzo H, et al. Application of terrestrial laser scanning for shipbuilding[A]. Proceedings of IAPRS Workshop on Laser Scanning 2007 and Silvia Laser 2007[C], Espoo, Finland, Sept. (2007).

[4] Gordon S, Lichti D, Franke J, et al. Measurement of structural deformation using terrestrial laser scanners", Proc[A]. Of 1st FIG International Symposium on Engineering Surveys for Construction Works and Structural Engineering[C], Nottingham, UK, (2004).

[5] Tsakiri M, Lichti D, Pfeifer N. Terrestrial laser scanning for deformation monitoring[A]. 3rd IAG / 12th FIG Symposium[C], Baden, May (2006).

[6] Wang W L, J X G, Wu T L, et al. Data Processing Method of Measuring[J]. Journal of Optoelectronics·Laser , 2002, 13(2): 173-175.

[7] PAN Jingsheng, LIU Yanmin, QI Jiaxiang etc. Experimental Researching on A Measurement System of Heavy Forgingss Length [J]. Journal of Northeast Heavy Machinery Institute, 1995, 19(4): 303-307.

[8] LIU Fucai, Shi Baosen, XU Guokai. Heavy forgings laser-sizing system controlled by monolithic controller[J]. Manufacturing Automation, 2000, 22(1): 53-55.

[9] NIE Shaomin, TANG Jinglin, GUO Baofeng, etc. Research on the heavy forgingss dimensional metrology based on CCD[J]. Journal of Plasticity Engineering, 2005, 12(7): 85-88.

[10] LIN Xiaofeng, SHI Shaoli. Size measurement of work pieces by using CCD measuring system[J]. Optical Instruments, 2002, 24(3): 11-13.

[11] YU Peng, GAO Feng, GUO Weizhong, etc. Research and Development of a New Large-size Forgings Measurement System[J]. Machine Design and Research, 20028, 24(3): 89-92.

[12] SHAO Deqi, WANG Wei. Line Array CCD Measure Technology and Application in Continuous Rolled Base Measure of Maanshan Iron and Steel Corp [J]. Optics and Precision Engineering, 1999, 7(1): 130-134.

[13] DA Zhengshang, SHI Huanfang. Signal extraction of line scan CCD used in dimension measurement [J]. Journal of XIAN Institute of Technology, 2000, 20(1): 35-38.

[14] WANG Wanchun, PEI Renqing. Multiple area array CCD based measurement research for big size object precision [J]. Optical Instruments, 2001, 23(4): 3-7.