scholarly journals Development of Coated Electrodes with Solid Wire and Flux-Cored Alloyed Wire for Microalloyed Steel Welding

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2152
Author(s):  
Darko Bajić ◽  
Mihailo Mrdak ◽  
Nikola Bajić ◽  
Darko Veljić ◽  
Marko Rakin ◽  
...  
Keyword(s):  
Microalloyed Steel ◽  
Experimental Production ◽  
Cored Wire ◽  
Power Sources ◽  
Chemical Power Sources ◽  
Basic Flux ◽  
New Type ◽  
Welding Joints ◽  
Steel Welds ◽  
Welding Properties

In this paper, we will present our investigation of the quality of J55 microalloyed steel welds that were formed by a basic flux-cored wire electrodes that were of appropriate quality and alloyed with Ni and Mo. Based on the comparison and analysis of the obtained results related to the testing of the chemical composition, mechanical properties, toughness at test temperatures, and the microstructure of welding joints formed by a classic and specially coated rutile flux-cored electrode, we assessed the justification to switch from solid wire electrodes to flux-cored alloyed wire electrodes of appropriate quality. The research aim for the application of flux-cored wire electrodes instead of solid wire electrodes is based on the advantages pertaining to a flux-cored wire: molten metal from electrode wire is transferred in the form of fine droplets, easy welding and maximum productivity within all spatial positions related to welding, improved properties of welding joints, and increased productivity when compared to a classic solid wire. Our research encompasses the development of the experimental production at the Research and Development Center IHIS Belgrade (Development Institute for Chemical Power Sources), Serbia, of the new type of a coated electrode with improved welding properties when compared to a classic electrode intended for microalloyed steel welding.

3-Pentadecyl-2,4-dioxo-16-crown-5 as a promising additive in electrolytes for chemical power sources

2020 ◽  
Vol 30 (1) ◽  
pp. 78-80
Author(s):  
Anna A. Slesarenko ◽  
Guzaliya R. Baymuratova ◽  
Igor K. Yakuschenko ◽  
Galiya Z. Tulibaeva ◽  
Alexander F. Shestakov ◽  
...  
Keyword(s):  
Power Sources ◽  
Chemical Power Sources

Comparing Nuclear and Chemical Power Sources for MEMS/NEMS Applications

2021 ◽  
Author(s):  
Oliver M. Barham
Keyword(s):  
Energy Density ◽  
Lithium Battery ◽  
Radioactive Isotopes ◽  
Small Scale ◽  
Implantable Medical Devices ◽  
Power Sources ◽  
Chemical Power Sources ◽  
Sensor Applications ◽  
Power And Energy ◽  
Nuclear Batteries

Abstract Nuclear batteries are a class of power sources that harvest energy from decaying radioactive isotopes to generate electricity for powering sensors and electronics. They are well known in the fields of space exploration and implantable medical devices, but are not widely known to micro or nano-technologists in general. Nuclear batteries are compared against chemical sources of energy applicable to small-scale systems, including energy harvesting prototypes and a mm-scale commercial lithium battery, utilizing the metrics of volumetric power and energy density. Nuclear batteries benefit from orders of magnitude more energy density than power sources derived from chemical reactions, however they also have orders smaller power density. For some sensor applications, nuclear batteries enable capabilities not possible with chemical energy sources, and examples are discussed.

Study on Metal Transfer and Welding Spatter Characteristics of Basic Flux Cored Wire

2013 ◽  
Vol 477-478 ◽  
pp. 1369-1372 ◽  
Author(s):  
Yong Wang ◽  
Ying Qiao Zhang ◽  
Bao Wang ◽  
Zhi Jun Wang
Keyword(s):  
High Speed ◽  
Short Circuit ◽  
Welding Current ◽  
Metal Transfer ◽  
Welding Parameters ◽  
Droplet Transfer ◽  
Cored Wire ◽  
Basic Flux ◽  
Key Factor ◽  
Slag Column

The metal transfer behaviors of basic flux cored wire at different arc voltage and welding current and the resultant welding spatter were investigated by using a high speed camera. Two modes of metal transfer are found: globular repelled transfer (lower welding parameters) and small droplet transfer (higher welding parameters). The former is accompanied by large granular spatter, large droplet itself explosion spatter and electric explosive spatter of short-circuit, and spatter in the latter is reduced obviously. But if the slag column is found in the two models, spatter could be dropped evidently owing to its significant guiding role for metal transfer. Therefore the slag column is the key factor of reducing welding spatter.

Supercomputer Simulation of Components and Processes in the New Type Li-ion Power Sources

2017 ◽  
pp. 275-287 ◽  
Author(s):  
Vadim Volokhov ◽  
Dmitry Varlamov ◽  
Tatyana Zyubina ◽  
Alexander Zyubin ◽  
Alexander Volokhov ◽  
...  
Keyword(s):  
Power Sources ◽  
New Type ◽  
Li Ion

Exploring Possibilities of Implementation of Special Rutile Electrodes for Welding Microalloyed Steels

2016 ◽  
Vol 1138 ◽  
pp. 19-24
Author(s):  
Mihailo Mrdak ◽  
Nikola Bajić ◽  
Marko Rakin ◽  
Darko Veljić ◽  
Zoran Karastojković ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Weld Metal ◽  
Microalloyed Steel ◽  
Raw Materials ◽  
Microalloyed Steels ◽  
Test Results ◽  
Medium Thickness ◽  
Cored Wire ◽  
Ni Content

The paper presents test results of a new quality of a special rutile electrode, with a core of flux-cored wire made from local raw materials, based on analyzing mechanical properties and microstructure of the weld metal in MMA welding. The base metal for experimental welding was microalloyed steel marked J55 (thickness 7.0 mm) according to API Spec 5L standards (EN 10113-3. and JUS C.B0 502) which was produced in Smederevo steelworks. For experimental welding a special electrode IHIS E 35 R-2 was used, with a medium thickness rutile coating, a core of flux-cored wire and Ni content of 2.5%. The results of the analyzes indicate that the new quality special rutile electrode with the flux-cored wire core provides good structural and mechanical properties of weld metal in microalloyed steel welded joints.

Microstructure and cleavage resistance of heat affected zones in high strength, microalloyed steel welds

1998 ◽  
Vol 14 (2) ◽  
pp. 123-128 ◽  
Author(s):  
P. Brozzo ◽  
M. Capurro ◽  
M. G. Lenco ◽  
M. R. Pinasco
Keyword(s):  
Microalloyed Steel ◽  
High Strength ◽  
Steel Welds

Chemical power sources

1983 ◽  
Vol 9 (1) ◽  
pp. 83
Author(s):  
D.H. Collins
Keyword(s):  
Power Sources ◽  
Chemical Power Sources
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