scholarly journals Manganese Content Control in Weld Metal During MAG Welding

2016 ◽  
Vol 142 ◽  
pp. 012026
Author(s):  
D A Chinakhov ◽  
E D Chinakhova ◽  
A S Sapozhkov
Keyword(s):  
Weld Metal ◽  
Manganese Content ◽  
Mag Welding

Dependence of Silicon and Manganese Content in the Weld Metal on the Welding Current and Method of Gas Shielding

2015 ◽  
Vol 756 ◽  
pp. 92-96 ◽  
Author(s):  
Dmitry A. Chinakhov
Keyword(s):  
Chemical Composition ◽  
Weld Metal ◽  
Gas Dynamics ◽  
Gas Flow ◽  
Manganese Content ◽  
Welding Current ◽  
Mag Welding ◽  
Different Types ◽  
Considerable Impact ◽  
Electrode Metal

The influence of the welding current and method of gas shielding in MAG welding on the content of silicon and manganese is considered. Results of study of the welded specimens of steels 45 and 30HGSA when applying welding wire of different formulas and different types of gas shielding (traditional shielding and two-jet shielding) are given. It is established that in MAG welding the value of the welding current and the speed of the gas flow from the welding nozzle have a considerable impact on the chemical composition of the weld metal. The consumable electrode welding under double-jet gas shielding provides the directed gas-dynamics in the welding area and enables controlling the electrode metal transfer and the chemical composition of a weld.

Combining CaO–SiO2–TiO2 and CaO–SiO2–Al2O3 ternary phase systems for design of bimetallic welds

2021 ◽  
Vol 235 (8) ◽  
pp. 1271-1283
Author(s):  
Deepak Bhandari ◽  
Rahul Chhibber ◽  
Lochan Sharma ◽  
Navneet Arora ◽  
Rajeev Mehta
Keyword(s):  
Weld Metal ◽  
Power Plants ◽  
Ternary Phase ◽  
Desirability Function ◽  
Manganese Content ◽  
Research Work ◽  
Welding Process ◽  
Delta Ferrite ◽  
Electrode Coating ◽  
Phase Systems

The bimetallic welds are frequently utilized for pipeline transport system of the nuclear power plants. The occurrences of welding defects generally depend on the filler electrode as well as the electrode coatings during shielded metal arc welding process. This study involves the design of austenitic stainless steel welding electrodes for SS304L–SA516 bimetallic welds. The objective of research work includes the novel design of Al2O3–TiO2–CaO–SiO2 coatings by combining two ternary phase systems using extreme vertices mixture design methodology to analyze the effect of key coating constituents on the weld metal chemistry and mechanical properties of the welds. The significant effect of electrode coating constituent CaO on weld metal manganese content is observed which further improves the toughness of bimetallic weld joints. Various regression models have been developed for the weld responses and multi objective optimisation approach using composite desirability function has been adopted for identifying the optimized set of electrode coating compositions. The role of delta ferrite content in promoting the favourable solidification mode has been studied through microstructural examination.

Toughness and Internal Friction of Weld Metal Welded by High-Current MAG Welding

2011 ◽  
Vol 328-330 ◽  
pp. 1077-1081
Author(s):  
An Xia Pan
Keyword(s):  
Internal Friction ◽  
Weld Metal ◽  
Acicular Ferrite ◽  
Impact Test ◽  
Optical Microscope ◽  
The Other ◽  
Mag Welding ◽  
Welding Parameters ◽  
High Current ◽  
Temperature Impact

Low-temperature impact test on four different kinds of weld metal welded by different technologies of high-current MAG welding was carried out in this paper. The results show that different materials and different welding parameters have different effect on impact energy. As the chemical analysis and observation from the optical microscope show that When welding material contains appropriate C, Si, Ti, fine acicular ferrite forms in it; on the contrary, crisp and thick bainite appears. Compares to acicular ferrite which has an Akv>27J at -27°C and better toughness, bainite has a poor toughness and an Akv<27J. The internal friction experiments show that there are two internal friction peaks - Snoek and SKK. The peak is clear when the microstructure is bainite, on the other side, the microstructure is acicular ferrite.

Oxygen in Steel WMD after Welding with Micro-Jet Cooling

2013 ◽  
Vol 58 (4) ◽  
pp. 1067-1070 ◽  
Author(s):  
T. Wegrzyn ◽  
J. Piwnik ◽  
D. Hadrys
Keyword(s):  
Mechanical Properties ◽  
Weld Metal ◽  
Welding Process ◽  
Mag Welding ◽  
Mig Welding ◽  
Metallographic Structure ◽  
Jet Cooling ◽  
Welding Technology ◽  
Metal Deposit ◽  
Steel Welds

Abstract Until that moment micro-jet technology was tested only for MIG welding process with argon as a shielded gas. An article presents actual information about innovate welding technology with micro-jet cooling. There are put down information about gases that could be chosen both for MIG/MAG welding and for micro-jet process. There were given information about influence of various micro-jet gases on metallographic structure of steel welds. Mechanical properties of weld was presented in terms of oxygen amount in WMD (weld metal deposit).

Improvement of Mechanical Property in Weld Metal Formed with F-MAG Welding Method in Steels

2013 ◽  
pp. 2213-2219
Author(s):  
Tadahisa Tsuyama ◽  
Kiyomichi Nakai ◽  
Mei Akiyama ◽  
Bunpei Takahashi ◽  
Tatsuaki Sakamoto ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Weld Metal ◽  
Mag Welding ◽  
Welding Method

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.

Improvement of Mechanical Property in Weld Metal Formed with F-Mag Welding Method in Steels

PRICM ◽  
2013 ◽  
pp. 2213-2219
Author(s):  
Tadahisa Tsuyama ◽  
Kiyomichi Nakai ◽  
Mei Akiyama ◽  
Bunpei Takahashi ◽  
Tatsuaki Sakamoto ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Weld Metal ◽  
Mag Welding ◽  
Welding Method

scholarly journals Tensile Properties and Microstructure of Weld Metal of X80 Steel by MAG Welding

2004 ◽  
Vol 22 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Hiroyuki MOTOHASHI ◽  
Naoto HAGIWARA ◽  
Tomoki MASUDA
Keyword(s):  
Weld Metal ◽  
Tensile Properties ◽  
Mag Welding ◽  
X80 Steel

scholarly journals Nitrogen And Oxygen Amount In Weld After Welding With Micro-Jet Cooling

2015 ◽  
Vol 60 (2) ◽  
pp. 657-660
Author(s):  
T. Węgrzyn ◽  
J. Piwnik
Keyword(s):  
Mechanical Properties ◽  
Weld Metal ◽  
Welding Process ◽  
Mag Welding ◽  
Mig Welding ◽  
Metallographic Structure ◽  
Jet Cooling ◽  
Metal Deposit ◽  
Steel Welds

AbstractMicro-jet cooling after welding was tested only for MIG welding process with argon, helium and nitrogen as a shielded gases. A paper presents a piece of information about nitrogen and oxygen in weld after micro-jet cooling. There are put down information about gases that could be chosen both for MIG/MAG welding and for micro-jet process. There were given main information about influence of various micro-jet gases on metallographic structure of steel welds. Mechanical properties of weld was presented in terms of nitrogen and oxygen amount in WMD (weld metal deposit).

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