A new type of submerged-arc hardfacing flux-cored wire to repair surface of the roll

2010 ◽  
Author(s):  
Yang Ke ◽  
Bao Yefeng ◽  
Jiang Yongfeng ◽  
Xie Xiang
Keyword(s):  
Cored Wire ◽  
New Type ◽  
Submerged Arc

A New Type of Submerged-Arc Flux-Cored Wire Used for Hardfacing Continuous Casting Rolls

2011 ◽  
Vol 18 (11) ◽  
pp. 74-79 ◽  
Author(s):  
Ke Yang ◽  
Zhi-xi Zhang ◽  
Wang-qin Hu ◽  
Ye-feng Bao ◽  
Yong-feng Jiang
Keyword(s):  
Continuous Casting ◽  
Cored Wire ◽  
New Type ◽  
Submerged Arc

scholarly journals Research of nanoscale titanium carbides influence on the structure and properties of weld metal in automatic submerged arc welding

2018 ◽  
Vol 226 ◽  
pp. 03029
Author(s):  
Nikolay V. Kobernik ◽  
Alexander S. Pankratov
Keyword(s):  
Titanium Carbide ◽  
Weld Metal ◽  
Weld Pool ◽  
Arc Welding ◽  
Submerged Arc Welding ◽  
Structure And Properties ◽  
Cored Wire ◽  
Average Value ◽  
Submerged Arc ◽  
Primary Crystals

The influence of nanoscale refractory titanium carbide particles on the structure and properties of weld metal in automatic submerged arc welding is considered. Composite granules based on nickel were used to introduce the compound into the composition of the weld pool. Two schemes for introducing granules into the weld pool were tested, characterized by different temperature conditions: to the head part of the welding pool with the help of “ligature” and to the tail section with the help of additional filler wire. The prospects of introducing nano-sized titanium carbide into the tail part of the weld pool as part of a flux-cored wire are shown. With this method, the structure of the weld metal is observed to modify: the average size of the primary crystals of the weld metal is reduced by almost 50%. At the same time, the value of the toughness of the weld metal increases: the average value of this index increases by 36%. When titanium carbide is introduced as part of the “ligature” into the head of the weld pool, despite the effect of modifying (reducing the width of the primary crystals by 30%), the average value of the toughness of the weld metal decreases.

Infl uence of titanium introduction into fl ux-cored wire of the FE—C—SI—МN—СR—MO—NI system on the parameters of hardening surfacing

2021 ◽  
pp. 173-175
Author(s):  
N.A. Kozyrev ◽  
A.A. Usol’tsev ◽  
A.R. Mikhno ◽  
A.A. Sychev ◽  
A.A. Umansky
Keyword(s):  
Wear Resistance ◽  
Titanium Powder ◽  
Cored Wire ◽  
Correlation Models ◽  
Metallic Inclusions ◽  
Submerged Arc

Samples of flux-cored wire samples based on the Fe—C—Si—Мn—Сr—Mo—Ni system by adding different amounts of titanium powder, or submerged-arc surfacing from slag obtained during the production of silicomanganese. The data on the microstructure of surfacing and the presence of non-metallic inclusions in them are presented. The results of studies of the dependence of hardness and wear resistance of deposited layers on the percentage of titanium are shown and the corresponding correlation models are presented.

Rare earth elements in self-shielded flux-cored wires and their effect on the weld toughing of U75V rail steel

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040054
Author(s):  
Jia Chen ◽  
Jiafan Ye ◽  
Guoqing Gou ◽  
Wei Gao
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
High Efficiency ◽  
Rail Steel ◽  
Cored Wire ◽  
New Type ◽  
High Alkalinity ◽  
Cored Wires ◽  
The Impact ◽  
Addition Amount

Self-shielded flux-cored wire is a new type of welding material that has the advantages of outdoor and high-efficiency application, and it has been used widely for rail repair. A self-shielded flux-cored wire with high alkalinity and rare earth elements was taken for research, and the microstructure, inclusions, hardness and the impact toughness were studied. Rare earth elements could eliminate the oxygen and sulfur when they were added into the molten pool. The addition amount has been optimized to the range of 4% in the self-shielded flux-cored wire when used for rail repairing.

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.

NI-ROD FC 55

Alloy Digest ◽  
1998 ◽  
Vol 47 (3) ◽  
Keyword(s):  
Arc Welding ◽  
Submerged Arc Welding ◽  
Carbon Steels ◽  
Low Alloy Steels ◽  
Cast Irons ◽  
Cored Wire ◽  
Alloy Steels ◽  
Welding Electrode ◽  
Submerged Arc ◽  
Semiautomatic Welding

Abstract NI-ROD FC 55 cored wire is used for flux-cored-arc and submerged-arc welding of gray, malleable, and ductile cast irons. It is also used for surfacing of cast irons and for joining cast irons to various wrought materials such as carbon steels and low-alloy steels. The cored wire combines the desirable features of NI-ROD 55 Welding Electrode with the speed and economy of automatic or semiautomatic welding. Submerged-arc welding with the cored wire is done with INCOFLUX 5 submerged arc flux. This datasheet provides information on composition, hardness, and tensile properties. It also includes information on joining. Filing Code: Ni-538. Producer or source: Inco Alloys International Inc.

The Microstructure of Shock-Synthesized Diamond

1967 ◽  
Vol 25 ◽  
pp. 324-325
Author(s):  
Lucien F. Trueb
Keyword(s):  
Single Crystals ◽  
Preferred Orientation ◽  
High Magnification ◽  
Texture Pattern ◽  
Shock Process ◽  
New Type ◽  
Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

New type electron gun with electrostatic and electromagnetic lenses

1978 ◽  
Vol 36 (1) ◽  
pp. 62-63
Author(s):  
T. Ichinokawa ◽  
H. Maeda
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Optimum Condition ◽  
Bias Voltage ◽  
Electron Gun ◽  
Charge Effect ◽  
Micro Fabrication ◽  
Maximum Brightness ◽  
New Type ◽  
The Ideal

I. IntroductionThermionic electron gun with the Wehnelt grid is popularly used in the electron microscopy and electron beam micro-fabrication. It is well known that this gun could get the ideal brightness caluculated from the Lengumier and Richardson equations under the optimum condition. However, the design and ajustment to the optimum condition is not so easy. The gun has following properties with respect to the Wehnelt bias; (1) The maximum brightness is got only in the optimum bias. (2) In the larger bias than the optimum, the brightness decreases with increasing the bias voltage on account of the space charge effect. (3) In the smaller bias than the optimum, the brightness decreases with bias voltage on account of spreading of the cross over spot due to the aberrations of the electrostatic immersion lens.In the present experiment, a new type electron gun with the electrostatic and electromagnetic lens is designed, and its properties are examined experimentally.

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