naa a22 4500 510822827 CHVBK 20180411083542.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12541-013-0170-3 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0170-3 Hot-stamping die-cooling system for vehicle door beams [Elektronische Daten] [Zhong-de Shan, Yong-sheng Ye, Mi-lan Zhang, Bao-yu Wang] The need for lightweight automobiles has promoted the rapid development of hot stamping. The cooling system of the hot-stamping die determines the performance of hot-stamped workpieces. By establishing a simplified hot-stamping model, we determined that the temperature-time curve of a workpiece is an exponential function. Our research results showed that the depth from the die surface to the cooling pipes has the biggest impact on the cooling rate and uniformity of the workpiece; the correct depth must be ensured to obtain a uniform quenching rate. By studying the cooling buffer flumes, we discovered that the water flow in the pipes becomes more uniform with increasing flume width. With an increase in the flume height, the water flow uniformity in the pipes first increased, and then decreased. In addition, augmenting the pipe diameter near the inlet improved the water flow uniformity in the pipes. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Cooling system optimization nationallicence Hot stamping nationallicence UHSS nationallicence D : cooling pipe diameter nationallicence a : space between two pipes nationallicence b : depth from die surface to cooling pipes nationallicence y : workpiece temperature nationallicence x : cooling time nationallicence $\bar \nu $ : flow uniformity in the middle of pipes nationallicence v max : max. flow velocity in the middle of pipes nationallicence v min : min. flow velocity in the middle of pipes nationallicence Shan Zhong-de State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut Ye Yong-sheng State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut Zhang Mi-lan State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut Wang Bao-yu School of mechanical engineering, University of Science and Technology Beijing, 100083, Beijing, China aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/7(2013-07-01), 1251-1255 2234-7593 14:7<1251 2013 14 12541 https://doi.org/10.1007/s12541-013-0170-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0170-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shan Zhong-de State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut NATIONALLICENCE 700 1- Ye Yong-sheng State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut NATIONALLICENCE 700 1- Zhang Mi-lan State Key Laboratory of Advanced Forming Technology and Equipment, Advanced Manufacture Technology Center China Academy of Machinery Science & Technology, 100083, Beijing, China aut NATIONALLICENCE 700 1- Wang Bao-yu School of mechanical engineering, University of Science and Technology Beijing, 100083, Beijing, China aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/7(2013-07-01), 1251-1255 2234-7593 14:7<1251 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer