Measuring the process efficiency of controlled gas metal arc welding processes

被引：120

作者：

Pepe, N. ^{[1
]}

Egerland, S. ^{[2
]}

Colegrove, P. A. ^{[1
]}

Yapp, D. ^{[1
]}

Leonhartsberger, A. ^{[2
]}

Scotti, A. ^{[3
]}

机构：

[1] Cranfield Univ, Cranfield MK43 0AL, Beds, England

[2] Fronius Int GmbH, Welding Technol Div, A-4600 Wels, Austria

[3] Univ Fed Uberlandia, Fac Mech Engn, BR-38400 Uberlandia, MG, Brazil

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2011年 / 16卷 / 05期

关键词：

GMAW; Process efficiency; Thermal efficiency; Controlled dip transfer; MIG; calorimeter; PLASMA; POWER;

D O I：

10.1179/1362171810Y.0000000029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermal or process efficiency in gas metal arc welding (GMAW) is a crucial input to numerical models of the process and requires the use of an accurate welding calorimeter. In this paper, the authors compare a liquid nitrogen calorimeter with an insulated box calorimeter for measuring the process efficiency of Fronius cold metal transfer, Lincoln surface tension transfer and RapidArc, Kemppi FastRoot and standard pulsed GMAW. All of the controlled dip transfer processes had a process efficiency of similar to 85% when measured with the liquid nitrogen calorimeter. This value was slightly higher when welding in a groove and slightly lower for the RapidArc and pulsed GMAW. The efficiency measured with the insulated box calorimeter was slightly lower, but it had the advantage of a much smaller random error.

引用

页码：412 / 417

页数：6

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