高大新,于有生,段爱琴. CO2 激光焊接 TC4 熔池红外光辐射信号与焊接参数的关系[J]. 航空制造技术, 2011, 54(18): 92-95/98.
高大新, 于有生, 段爱琴. Relation Between Molten Pool Infrared Radiation Signal and Welding Parameter During COLaser Welding of TC4[J]. Aeronautical Manufacturing Technology, 2011, 54(18): 92-95.
高大新, 于有生, 段爱琴. Relation Between Molten Pool Infrared Radiation Signal and Welding Parameter During COLaser Welding of TC4[J]. Aeronautical Manufacturing Technology, 2011, 54(18): 92-95. DOI: 10.16080/j.issn1671-833x.2011.18.020.
CCD camera and infrared radiation monitoring system are used to systematically study the influences of the heat input on the relative intensities of the infrared radiation and the area of molten pool during laser welding of TC4. The results show that the relative intensities of the signal can be obviously divided into three phases for the whole weld seam: the starting state of welding
the quasi-stable state
and the arc suppressing of welding. When the laser power keeps constant with welding speed decreasing
the area of molten pool increases
meanwhile the relative intensity of infrared radiation signal increases. Results indicate that there are the same varying rules existing between molten pool and relative intensities of infrared radiation.Thereby
changes about the area of molten pool can be monitored quite exactly
and the stability of welding process can be monitored by using infrared radiation signal.