scholarly journals Impact Toughness of Steel WMD After TIG Welding

2017 ◽  
Vol 62 (3) ◽  
pp. 1647-1650
Author(s):  
T. Węgrzyn ◽  
J. Piwnik ◽  
Z. Stanik ◽  
D. Węgrzyn ◽  
D. Sieteski
Keyword(s):  
Artificial Intelligence ◽  
Impact Toughness ◽  
Weld Metal ◽  
Alloy Steel ◽  
Gas Mixtures ◽  
Tig Welding ◽  
Low Alloy Steel ◽  
Jet Cooling ◽  
Metal Deposit ◽  
Alloy Weld

AbstractThe material selected for this investigation was low alloy weld metal deposit after TIG welding with various amount of oxygen in weld metal deposit (WMD). After TIG process it is difficult to get proper amount of oxygen in WMD on the level much lower than 350 ppm. The highest impact toughness of low alloy WMD corresponds with the amount of oxygen in WMD above 350 ppm. In the paper focuses on low alloy steel after innovate welding method with micro-jet cooling that could be treated as a chance on rising amount of oxygen in weld. Weld metal deposit (WMD) was carried out for TIG welding with micro-jet cooling with various amount of oxygen in WMD. In that paper various gas mixtures (gas mixtures Ar-O2and Ar-CO2) were tested for micro-jet cooling after TIG welding. An important role in the interpretation of the results can give methods of artificial intelligence.

scholarly journals Low Alloy Steel Structures After Welding with Micro-Jet Cooling

2017 ◽  
Vol 62 (1) ◽  
pp. 115-118 ◽  
Author(s):  
T. Węgrzyn ◽  
J. Piwnik ◽  
D. Hadryś ◽  
Ł. Wszołek
Keyword(s):  
Alloy Steel ◽  
Automotive Industry ◽  
Steel Structures ◽  
Gas Mixtures ◽  
Low Alloy Steel ◽  
Tempered Martensite ◽  
Carbide Phases ◽  
Jet Cooling ◽  
Metal Deposit ◽  
First Time

Abstract The paper focuses on low alloy steel after innovate welding method with micro-jet cooling. Weld metal deposit (WMD) was carried out for welding and for MIG and MAG welding with micro-jet cooling. This method is very promising mainly due to the high amount of AF (acicular ferrite) and low amount of MAC (self-tempered martensite, retained austenite, carbide) phases in WMD. That structure corresponds with very good mechanical properties, ie. high impact toughness of welds at low temperature. Micro-jet cooling after welding can find serious application in automotive industry very soon. Until that moment only argon, helium and nitrogen were tested as micro-jet gases. In that paper first time various gas mixtures (gas mixtures Ar-CO2) were tested for micro-jet cooling after welding.

scholarly journals The Use of Compressed Air for Micro-Jet Cooling After MIG Welding

2016 ◽  
Vol 61 (3) ◽  
pp. 1405-1408
Author(s):  
D. Hadryś ◽  
T. Węgrzyn ◽  
J. Piwnik ◽  
Z. Stanik ◽  
W. Tarasiuk
Keyword(s):  
Weld Metal ◽  
Acicular Ferrite ◽  
Compressed Air ◽  
Steel Weld ◽  
Low Alloy Steel ◽  
Mig Welding ◽  
Jet Cooling ◽  
Metal Deposit ◽  
Steel Weld Metal ◽  
First Time

AbstractThe material selected for this investigation was low alloy steel weld metal deposit (WMD) after MIG welding with micro-jet cooling. The present investigation was aimed as the following tasks: obtained WMD with various amount of acicular ferrite and further analyze impact toughness of WMD in terms of acicular ferrite amount in it. Weld metal deposit (WMD) was first time carried out for MIG welding with micro-jet cooling of compressed air and gas mixture of argon and air. Until that moment only argon, helium and nitrogen were tested as micro-jet gases for MIG/MAG processes. An important role in the interpretation of the results can give methods of artificial intelligence.

Steel Welding with Micro-Jet Injector

2014 ◽  
Vol 1036 ◽  
pp. 440-445
Author(s):  
Tomasz Węgrzyn ◽  
Jan Piwnik ◽  
Izabela Horzela ◽  
Wojciech Majewski
Keyword(s):  
Impact Toughness ◽  
Mild Steel ◽  
Weld Metal ◽  
Acicular Ferrite ◽  
Mig Welding ◽  
Jet Cooling ◽  
Welding Technology ◽  
Metal Deposit ◽  
Mild Steel Welding ◽  
Very High

The article focuses on mild steel welding and covers the new possibilities of that method. Since 2011 innovate welding technology based on micro-jet cooling just after welding is being checked. Weld metal deposit (WMD) was carried out for standard MIG welding and for new welding method with micro-jet cooling. A very high percentage of acicular ferrite (AF) in WMD was gettable (55-75%) for low alloy welding with micro-jet cooling injector. This beneficial structure (very high amount of AF) is unusual to observe in WMD in other welding methods. This method is very promising mainly due to the significant improvement of weld quality and reduces costs. Furthermore impact toughness and strengths of WMD were carried out. The present paper aims at outlining same of the recent innovations in MIG welding which represent steps ahead to achieve the objectives outlined above.

scholarly journals Micro-jet Cooling by Compressed Air after MAG Welding

2016 ◽  
Vol 16 (2) ◽  
pp. 111-114
Author(s):  
T. Węgrzyn ◽  
J. Piwnik ◽  
W. Tarasiuk ◽  
Z. Stanik ◽  
M. Gabrylewski
Keyword(s):  
Weld Metal ◽  
Compressed Air ◽  
Mag Welding ◽  
Gas Mixture ◽  
Steel Weld ◽  
Low Alloy Steel ◽  
Jet Cooling ◽  
Metal Deposit ◽  
Steel Weld Metal ◽  
First Time

Abstract The material selected for this investigation was low alloy steel weld metal deposit (WMD) after MAG welding with micro-jet cooling. The present investigation was aimed as the following tasks: analyze impact toughness of WMD in terms of micro-jet cooling parameters. Weld metal deposit (WMD) was first time carried out for MAG welding with micro-jet cooling of compressed air and gas mixture of argon and air. Until that moment only argon, helium and nitrogen and its gas mixture were tested for micro-jet cooling.

Structure and Properties of Steel Welding after Micro-Jet Cooling Process

2016 ◽  
Vol 246 ◽  
pp. 231-234
Author(s):  
Iwona Bednarczyk ◽  
Bożena Szczucka-Lasota ◽  
Tomasz Węgrzyn ◽  
Jan Piwnik
Keyword(s):  
Impact Toughness ◽  
Weld Metal ◽  
Acicular Ferrite ◽  
Structure And Properties ◽  
Cooling Process ◽  
Mechanical Structure ◽  
Jet Cooling ◽  
Metal Deposit ◽  
Very High

Welding with micro-jet cooling is an innovate technology. It is possible to get structure of weld metal deposit (WMD) with a very high amount of acicular ferrite (on the level of 70 %) that is not valuable for other processes. It corresponds with good impact toughness of weld. In the paper parameters of micro-jet cooling and mechanical structure of weld will be present and compared with welding without micro-jet cooling. Results of investigation are very optimistic. That technology should be treated for welding of other materials.

Microstructure and Impact Toughness of High-Strength Low-Alloy Steel after Tempforming

2021 ◽  
Vol 122 (10) ◽  
pp. 1014-1022
Author(s):  
A. S. Dolzhenko ◽  
P. D. Dolzhenko ◽  
A. N. Belyakov ◽  
R. O. Kaibyshev
Keyword(s):  
Impact Toughness ◽  
Alloy Steel ◽  
High Strength ◽  
Low Alloy Steel
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