Porozitás mennyiség csökkentése lap alakú nyomásos öntvény esetén
Reduction of porosity in the case of plate like pressure die casting
Keywords:
nyomásos öntvény, porozitás, fémadagolásAbstract
The porosity of the castings mainly depends on the dosed molten metal to the chamber. The switching point between the slow and fast movement of the piston is pre-calculated by the filling volume of the cavity. The inaccuracy of the dosed quantity is not corrected by the casting machine. The switching point of the piston must be adjusted from casting to casting according to the amount of metal added. This research shows the effect of dosed molten metal volume on porosity.
References
BIRADAR, SHIVKUMAR, ÉS T. BORLEPWAR PRASHANT. 2019. Minimization of Shrinkage Porosity in HPDC Process with Local Squeeze Pin Using Flow Simulation. O. 583–91 in Proceedings of International Conference on Intelligent Manufacturing and Automation., Springer,. Springer Singapore.
HAMASAKI, MASAFUMI, ÉS HIROFUMI MIYAHARA. 2013. Solidification microstructure and critical conditions of shrinkage porosity generation in die casting process of JIS-ADC12 (A383) alloy. Materials Transactions 54(7):1131–39. doi: 10.2320/matertrans.F-M2013806.
IBRAHIM, M. D., M. R. MOHAMAD, L. ROSLAN, Y. SUNAMI, ÉS S. S. LAM. 2020. High Pressure Die Casting Porosity Defect Analysis and Experimental Validation for Power Steering Columns and DVVTs. O. 187–96 in Advances in Material Sciences and Engineering, szerkesztette M. Awang, S. S. Emamian, és F. Yusof. Singapore: Springer Singapore.
IGNASZAK, Z., ÉS J. HAJKOWSKI. 2015. Contribution to the identification of porosity type in AlSiCu high-pressure-die-castings by experimental and virtual way. Archives of Foundry Engineering 15(1):143–51. doi: 10.1515/afe-2015-0026.
JIN, CHUL KYU, CHANG HYUN JANG, ÉS CHUNG GIL KANG. 2015. Vacuum die casting process and simulation for manufacturing 0.8 mm-thick aluminum plate with four maze shapes. Metals 5(1):192–205. doi: 10.3390/met5010192.
LUMLEY, R. N., R. G. O. DONNELL, D. R. GUNASEGARAM, M. GERSHENZON, A. C. YOB, ÉS I. J. POLMEAR. 2013. The role of alloy composition in the heat treatment of aluminium high pressure die castings. 26(2):0–9.
THIRUGNANAM, M. 2013. Modern High Pressure Die-casting Processes for Aluminium Castings. Indian Foundary Congress 1–7.
TSOUKALAS, V. D., ST A. MAVROMMATIS, N. G. ORFANOUDAKIS, ÉS A. K. BALDOUKAS. 2004. A study of porosity formation in pressure die casting using the Taguchi approach. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 218(1):77–86. doi: 10.1243/095440504772830228.
WANG, LAIHUA, PETER TURNLEY, ÉS GARY SAVAGE. 2011. Gas content in high pressure die castings Journal of Materials Processing Technology 211(9):1510–15. doi: 10.1016/J.JMATPROTEC.2011.03.024.
WINKLER, MARTINA, LOTHAR KALLIEN, ÉS T. FEYERTAG. 2015. Correlation between process parameters and quality characteristics in aluminum high pressure die casting.
