The behavior of TIG welding arc in a high-frequency axial magnetic field

2020 ◽  
Vol 65 (1) ◽  
pp. 95-104
Author(s):  
H. Wu ◽  
Y. L. Chang ◽  
Alexandr Babkin ◽  
Boyoung Lee
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Axial Magnetic Field ◽  
Tig Welding ◽  
Welding Arc

Research of the tribotechnical properties of EN-GJV-400 cast iron modified by the TIG method in a high-frequency magnetic field

2020 ◽  
Author(s):  
F.M. Shirzadov ◽  
A.I. Sadyihov
Keyword(s):  
Magnetic Field ◽  
Wear Resistance ◽  
Cast Iron ◽  
High Frequency ◽  
Tig Welding ◽  
Modified Surfaces ◽  
Frequency Magnetic Field ◽  
Melting Surface ◽  
High Frequency Magnetic Field ◽  
Tribological Parameters

The tribological parameters of EN-GJV-400 cast iron and its modified surfaces obtained by melting, surface alloying with copper and nickel, as well as TIG welding in a high frequency magnetic field are studied. It is determined, that TIG welding in a high frequency magnetic field significantly increases the wear resistance of the material. Keywords cast iron, TIG welding, ledeburite, wear resistance. [email protected], [email protected]

Measurement of the growth of a turbulent mercury jet in a coaxial magnetic field

1967 ◽  
Vol 27 (1) ◽  
pp. 81-96 ◽  
Author(s):  
Miklos Sajben ◽  
James A. Fay
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Axial Magnetic Field ◽  
Magnetic Interaction ◽  
Low Frequencies ◽  
Frequency Components ◽  
Profile Changes ◽  
The Mean ◽  
Wire System ◽  
Made In

Using a hot-wire system developed for this purpose, measurements of the velocity were made in a circular liquid-mercury jet issuing into a low-speed secondary flow and subject to a uniform axial magnetic field. The Reynolds number of the jet was about 10,000 while the magnetic interaction parameter varied from zero to slightly over one. The jet was strongly turbulent under all conditions investigated. The radial distribution of the mean and fluctuating component of the meridional velocity was measured at four axial stations located between 2 and 34 diameters from the nozzle exit. The results indicate that the rate of spreading of the jet is decreased, that the shape of the velocity profile changes and that the turbulent intensity decreases with increasing magnetic-field strength. The high-frequency components of the fluctuations in the second flow seem to be damped more strongly than fluctuations at low frequencies, while the reverse is observed within the core of the jet.

Resonanzverschiebungen in HF-Entladungen bei axialem Magnetfeld/Resonance Shifts in High Frequency Discharges in Axial Magnetic Field Configurations

1976 ◽  
Vol 31 (9) ◽  
pp. 1122-1130 ◽  
Author(s):  
B. Lammers ◽  
U. Oberlack ◽  
H. Schlüter
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Axial Magnetic Field ◽  
Hydrogen Plasma ◽  
Electron Density Profile ◽  
Field Configuration ◽  
Lower Hybrid ◽  
Neutral Gas ◽  
Apparent Shift ◽  
Lower Hybrid Resonance

AbstractThe pressure dependence of the lower hybrid resonance is investigated in a hydrogen plasma generated by a high frequency discharge. Appreciable shifts of the absorption peak with the neutral gas pressure are observed only in a mirror like magnetic field configuration. The measurements show that this shift cannot be explained by a change of the ion composition of the plasma, but must be attributed to two other mechanisms: The composition of the spectrum of the kn-components is influenced by the axial electron density profile so that at low pressure the higher modes of the spectrum are dominant.With higher pressure the formation of radial modes is favoured which leads to an additional apparent shift of the resonance.

scholarly journals Effect of Magnetic Field Induce Arc in Autogenous TIG Welding of 304 Stainless Steel Butt Joint

2021 ◽  
Vol 4 (1) ◽  
pp. 27-35
Author(s):  
Haikal Haikal ◽  
Moch. Chamim ◽  
Deni Andriyansyah ◽  
Emanuel Budi Raharjo ◽  
Ario Sunar Baskoro ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Tensile Strength ◽  
External Magnetic Field ◽  
Weld Line ◽  
Welding Process ◽  
Butt Joint ◽  
Tig Welding ◽  
304 Stainless Steel ◽  
Bead Width ◽  
Welding Arc

This paper reports the use of External Magnetic Field-Tungsten Inert Gas (EMF-TIG) method in butt joint applications to determine the effect of welding arc compression on the quality of butt joint of SS 304 thin plate was reported. The welding process was performed without using filler or autogenous welds. The external magnetic field was generated by placing a magnetic solenoid around the TIG welding torch. The results of this study showed that EMF-TIG welding can produce a more uniform bead width along the weld line compare with conventional TIG. Moreover, the D/W ratio obtained under external magnetic field was higher than without magnetic. However, the tensile strength of butt joint decreased with EMF-TIG because there is constriction in arc welding which produces shrinkage weld pool volume. In addition, high welding speeds result in a decrease in the tensile strength of both conventional TIG and EMF-TIG welds.

Solitary surface waves on a magnetized plasma cylinder

1985 ◽  
Vol 33 (1) ◽  
pp. 53-58 ◽  
Author(s):  
O. M. Gradov ◽  
L. Stenflo ◽  
D. Sünder
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Solitary Wave ◽  
Surface Waves ◽  
High Frequency ◽  
Axial Magnetic Field ◽  
Magnetized Plasma ◽  
Plasma Cylinder

We analyse high-frequency electrostatic solitary surface waves that propagate along a plasma cylinder in the presence of a constant axial magnetic field. The width of such a solitary wave, which is found to be inversely proportional to its amplitude, is expressed as a function of the magnitude of the external magnetic field.

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