Prediction of weld defects using welding condition data

Kalervo Leino, Ari Nikkola, Karri Vartiainen

Research output: Book/ReportReportProfessional

1 Citation (Scopus)

Abstract

The behaviour of different welding process parameters monitored in GMA-welding during artificial disturbances intended to produce weld defects is described. The disturbances include both electric parameter deflections such as deflections in travel speed, wire feed speed or welding voltage, and mechanical factors such as water, oil, grease, shop-primer or rust in the weld groove, as well as disturbed shielding gas flow. The monitored parameters include welding voltage, current and energy, travel speed, wire feed speed, short-circuiting frequency, proportional arc duration and arc sound emission. The experiments were made using short arc and spray arc welding. The effect of the different disturbances on weld quality is described. Also the ways of detecting the disturbances and consequently the actual weld defects with the aid of the monitored parameters are discussed. The technique opens the possibilities of replacing NDT of welds with welding process control.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages50
ISBN (Print)951-38-1546-3
Publication statusPublished - 1984
MoE publication typeD4 Published development or research report or study

Publication series

NameTutkimuksia / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume264

Fingerprint

Welding
Welds
Defects
Wire
Electric arc welding
Lubricating greases
Electric potential
Nondestructive examination
Shielding
Process control
Flow of gases
Acoustic waves
Water
Experiments

Keywords

  • automatic welding
  • quality control
  • arc welding
  • weld defects

Cite this

Leino, K., Nikkola, A., & Vartiainen, K. (1984). Prediction of weld defects using welding condition data. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 264
Leino, Kalervo ; Nikkola, Ari ; Vartiainen, Karri. / Prediction of weld defects using welding condition data. Espoo : VTT Technical Research Centre of Finland, 1984. 50 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 264).
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Leino, K, Nikkola, A & Vartiainen, K 1984, Prediction of weld defects using welding condition data. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 264, VTT Technical Research Centre of Finland, Espoo.

Prediction of weld defects using welding condition data. / Leino, Kalervo; Nikkola, Ari; Vartiainen, Karri.

Espoo : VTT Technical Research Centre of Finland, 1984. 50 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 264).

Research output: Book/ReportReportProfessional

TY - BOOK

T1 - Prediction of weld defects using welding condition data

AU - Leino, Kalervo

AU - Nikkola, Ari

AU - Vartiainen, Karri

PY - 1984

Y1 - 1984

N2 - The behaviour of different welding process parameters monitored in GMA-welding during artificial disturbances intended to produce weld defects is described. The disturbances include both electric parameter deflections such as deflections in travel speed, wire feed speed or welding voltage, and mechanical factors such as water, oil, grease, shop-primer or rust in the weld groove, as well as disturbed shielding gas flow. The monitored parameters include welding voltage, current and energy, travel speed, wire feed speed, short-circuiting frequency, proportional arc duration and arc sound emission. The experiments were made using short arc and spray arc welding. The effect of the different disturbances on weld quality is described. Also the ways of detecting the disturbances and consequently the actual weld defects with the aid of the monitored parameters are discussed. The technique opens the possibilities of replacing NDT of welds with welding process control.

AB - The behaviour of different welding process parameters monitored in GMA-welding during artificial disturbances intended to produce weld defects is described. The disturbances include both electric parameter deflections such as deflections in travel speed, wire feed speed or welding voltage, and mechanical factors such as water, oil, grease, shop-primer or rust in the weld groove, as well as disturbed shielding gas flow. The monitored parameters include welding voltage, current and energy, travel speed, wire feed speed, short-circuiting frequency, proportional arc duration and arc sound emission. The experiments were made using short arc and spray arc welding. The effect of the different disturbances on weld quality is described. Also the ways of detecting the disturbances and consequently the actual weld defects with the aid of the monitored parameters are discussed. The technique opens the possibilities of replacing NDT of welds with welding process control.

KW - automatic welding

KW - quality control

KW - arc welding

KW - weld defects

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SN - 951-38-1546-3

T3 - Tutkimuksia / Valtion teknillinen tutkimuskeskus

BT - Prediction of weld defects using welding condition data

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Leino K, Nikkola A, Vartiainen K. Prediction of weld defects using welding condition data. Espoo: VTT Technical Research Centre of Finland, 1984. 50 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 264).