TY - JOUR
T1 - Study of high frequency pulsed arc on molten pool thermal properties of Ti-6Al-4V
AU - Li, Ling
AU - Yang, Mingxuan
AU - Qi, Bojin
AU - Liu, Heng
N1 - Publisher Copyright:
© 2019 The Society of Manufacturing Engineers
PY - 2019/2
Y1 - 2019/2
N2 - Infrared thermal observation and thermocouple temperature measurement of molten pool were carried out synchronously with Ti-6Al-4V plates (h = 5 mm). The molten pool surface emissivity was detected, and the non-contact temperature monitoring was calibrated by thermocouple. The temperature distribution was analyzed with the different parameters. The results indicated that the surface emissivity reduced from 0.65 to 0.22. Meanwhile, compared with conventional GTAW (C-GTAW), the maximum surface temperature of molten pool increased by 146K at least with extinguishing arc, and it decreased rapidly within a short distance. By contrast, the external diffusion of high temperature region under ultra-high frequency pulsed GTAW (UHFP-GTAW) decreased by 12.97% to 16.83% (50 A), 2.62% to 9.28% (60 A), and 0.57% to 6.63% (80 A).
AB - Infrared thermal observation and thermocouple temperature measurement of molten pool were carried out synchronously with Ti-6Al-4V plates (h = 5 mm). The molten pool surface emissivity was detected, and the non-contact temperature monitoring was calibrated by thermocouple. The temperature distribution was analyzed with the different parameters. The results indicated that the surface emissivity reduced from 0.65 to 0.22. Meanwhile, compared with conventional GTAW (C-GTAW), the maximum surface temperature of molten pool increased by 146K at least with extinguishing arc, and it decreased rapidly within a short distance. By contrast, the external diffusion of high temperature region under ultra-high frequency pulsed GTAW (UHFP-GTAW) decreased by 12.97% to 16.83% (50 A), 2.62% to 9.28% (60 A), and 0.57% to 6.63% (80 A).
KW - Infrared thermal monitoring
KW - Surface emissivity
KW - Thermocouple temperature measurement
KW - Ultra high frequency pulsed GTAW
UR - https://www.scopus.com/pages/publications/85060272365
U2 - 10.1016/j.jmapro.2019.01.034
DO - 10.1016/j.jmapro.2019.01.034
M3 - 文章
AN - SCOPUS:85060272365
SN - 1526-6125
VL - 38
SP - 308
EP - 312
JO - Journal of Manufacturing Processes
JF - Journal of Manufacturing Processes
ER -