Results 121 to 130 of about 33,952 (243)

Effect of the post weld heat treatment on the microstructure of the underwater wet welding SS400 steel

Metalurgija
The effects of the post weld heat treatment (PWHT) on the microstructure and hardness of the underwater wet welding (UWW) SS400 steel have been evaluated.
N. Muhayat, S. Yasinta, A. R. Prabowo, Y. C. N. Saputro, . Triyono   +4 more
doaj  

Simulation of Temperature Distribution in TIG Spot Welds of (Al-Mg) Alloy Using Finite Element Method

Al-Khawarizmi Engineering Journal, 2018
This research concern to analyse and simulate the temperature distribution in the spot welding joints using tungsten arc welding shielded with inert gas (TIG Spot) for the aluminum-magnesium alloy type  (5052-O).
Muna K Abbas, Abdul Hussain G. Al-Maliky, Ahlam Abid Ameer Alkhafajy   +2 more
doaj  

Study of gas-tungsten-arc welding power density Final report, 1 Jun. 1968 - 30 May 1969 [PDF]

Power density in gas tungsten arc welding with modified ...
Karlak, R. F., Pfluger, A. R.
core   +1 more source

Comparative study of TIG and SMAW root welding passes on ductile iron cast weldability

Metalurgija, 2017
This work compares the weldability of ductile iron when: (I) a root weld is applied with a tungsten inert gas (TIG) process using an Inconel 625 source rod and filler welds are subsequently applied using coated electrodes with 97,6%Ni; and (II) welds on ...
J. Cárcel-Carrasco, M. Pascual, M. Pérez-Puig, F. Segovia   +3 more
doaj  

Effect of welding parameters on microstructure and mechanical properties of dissimilar AISI 304/ductile cast iron fusion welded joints

Scientific Reports
Problems associated with dissimilar fusion welding are mainly originated from the differences in melting points, coefficients of thermal conductivity and thermal expansion, …etc., and carbon content when welding dissimilar ferrous materials.
M. El-Shennawy, H. A. Abdel-Aleem, M. M. Ghanem, A. M. Sehsah   +3 more
doaj   +1 more source

Simulation of Temperature Distribution in TIG Spot Welds of(Al-Mg) Alloy Using Finite Element Method

Al-Khawarizmi Engineering Journal, 2008
This research concern to analyse and simulate the temperature distribution in the spot welding joints using tungsten arc welding shielded with inert gas (TIG Spot) for the aluminum-magnesium alloy type (5052-O). The effect of and the quantity of the heat
Ahlam Abid Ameer Alkhafajy, Abdul Hussain G. Al-Maliky, Muna K Abbas   +2 more
doaj  

The variable polarity plasma arc welding process: Its application to the Space Shuttle external tank [PDF]

The technical history of the variable polarity plasma arc (VPPA) welding process being introduced as a partial replacement for the gas shielded tungsten arc process in assembly welding of the space shuttle external tank is described.
Bayless, O. E., Jr., Jones, C. S., III, Munafo, A. P., Nunes, A. C., Jr., Wilson, W. A.   +4 more
core   +1 more source

The optimization of welding regime parameters at shielded metal arc welding (SMAW) by mathematical modeling

Metalurgija, 2016
The realized researches followed the determining of mathematical models that allow the optimization of the welding process in order to obtain welded joints with certain values of the mechanical characteristics.
V. Petrescu, G. Paraschiv, D. Dobrotă
doaj  

NASA Tech Briefs Index, 1977, volume 2, numbers 1-4 [PDF]

Announcements of new technology derived from the research and development activities of NASA are presented. Abstracts, and indexes for subject, personal author, originating center, and Tech Brief number are presented for ...

core   +1 more source

Characteristics and performance of the variable polarity plasma arc welding process used in the Space Shuttle external tank [PDF]

Significant advantages of the Variable Polarity Plasma Arc (VPPA) Welding Process include faster welding, fewer repairs, less joint preparation, reduced weldment distortion, and absence of porosity.
Hung, R. J., Lee, C. C., Liu, J. W.
core   +1 more source