INFRARED TEMPERATURE SENSING OF LASER-WELDING

被引：23

作者：

DOONG, JL

WU, CS

HWANG, JR

机构：

[1] Department of Mechanical Engineerng, National Central University, Chung-Li

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 1991年 / 31卷 / 04期

关键词：

D O I：

10.1016/0890-6955(91)90040-A

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study investigates the feasibility of using infrared sensing devices to measure the surface temperature variation near the molten pool and to correlate this temperature variation with the changes in welding parameters. Since the properties of the welds depend upon their microstructures and compositions, the cooling rate of the weld pool exerts a strong influence on their properties. If a valuable relationship could be found, the output signal from the infrared detector might be used as a feedback signal to control the laser welding process. In the present study, a simple method of monitoring the variation of cooling rate is proposed. Using two infrared temperature sensing devices together with a personal computer, we can calculate the cooling rate variation of a specified point of welds. From the results, it is concluded that mutual relations exist between measured cooling rate and microstructures as well as the properties of welds.

引用

页码：607 / 616

页数：10

共 7 条

[1]

Lukens, Morris, Infrared temperature sensing of cooling rates for arc welding control, Weld J., pp. 27-33, (1982)

[2]

Duncan, Optical detection system for the evaluation of laser welds, Rev. Sci. Instrum., 55, pp. 1585-1589, (1984)

[3]

Jon, Noncontact acoustic emission monitoring of laser beam welding, Weld. J., pp. 43-48, (1985)

[4]

Kozono, Kokura, Kajiwara, Onuma, Relation between surface temperature and reverse side bead width in a low frequency pulsed TIG welding of stainless steel plate, Journal of the Japan Welding Society, 52, pp. 45-49, (1983)

[5]

Kozono, Kokura, Onuma, Control system of reverse side bead with by surface temperature monitoring of TIG weld, Q. J. Japan Weld. Soc., 4, pp. 336-340, (1986)

[6]

Kozono, Onuma, Kokura, Control system of reverse side bead width by surface temperature monitoring of steel pipe weld, Q. J. Japan Weld. Soc., 6, pp. 110-115, (1988)

[7]

David, Vitek, Solidification behavior and microstructural analysis of austenitic stainless steel laser welds, Proc. Lasers in Metallurgy Conf., pp. 247-254, (1981)

← 1 →