Resistance measurements for control of laser metal wire deposition

被引：16

作者：

Hagqvist, Petter ^{[1
]}

Heralic, Almir ^{[1
]}

Christiansson, Anna-Karin ^{[1
]}

Lennartson, Bengt ^{[2
]}

机构：

[1] Univ West, Dept Engn Sci, SE-46186 Trollhattan, Sweden

[2] Chalmers, Dept Signals & Syst, SE-41296 Gothenburg, Sweden

来源：

OPTICS AND LASERS IN ENGINEERING | 2014年 / 54卷

关键词：

Laser metal wire deposition; Automatic control; Resistance; Additive manufacturing; DIODE-LASER; POWDER; SUPERALLOY;

D O I：

10.1016/j.optlaseng.2013.10.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method for controlling robotized laser metal wire deposition on-line by electrical resistance metering is proposed. The concept of measuring the combined resistance of the wire and the weld pool is introduced and evaluated for automatic control purposes. Droplet formation, detachment of the wire from the weld pool and stubbing can be hard to avoid during processing due to the sensitive process and short reaction times needed for making on-line adjustments. The implemented system shows a possible route for automatic control of the process wherein such problems can be avoided automatically. The method proves to successfully adjust the distance between the tool and the workpiece through controlling the robot height position, thus increasing stability of the laser metal wire deposition process. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：62 / 67

页数：6

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