Effect of Inert Gas Flow Rate on Homogenization and Inclusion Removal in a Gas Stirred Ladle

2010 ◽  
Vol 81 (12) ◽  
pp. 1056-1063 ◽  
Author(s):  
M. Ek ◽  
L. Wu ◽  
P. Valentin ◽  
D. Sichen
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Inert Gas ◽  
Gas Flow Rate ◽  
Inclusion Removal

scholarly journals Investigation of Mechanical Properties of Metal Inert Gas-Brazed TRIP800 Steel Joints Using Different Shielding Gas Flow Rate

2014 ◽  
Vol 125 (2) ◽  
pp. 473-474 ◽  
Author(s):  
N. Akkas ◽  
F. Varol ◽  
E. Ferik ◽  
E. Ilhan ◽  
U. Ozsarac ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flow Rate ◽  
Gas Flow ◽  
Inert Gas ◽  
Shielding Gas ◽  
Gas Flow Rate ◽  
Steel Joints

scholarly journals Effect of Gas Flow Rate, Bubble Size and Inclusion Size on Inclusion Removal Under High Throughput Conditions Using Water Model Experiment

2017 ◽  
Vol 103 (9) ◽  
pp. 517-523
Author(s):  
Kohei Furumai ◽  
Takeshi Murai ◽  
Norichika Aramaki ◽  
Yuji Miki
Keyword(s):  
High Throughput ◽  
Flow Rate ◽  
Bubble Size ◽  
Model Experiment ◽  
Gas Flow ◽  
Inclusion Size ◽  
Water Model ◽  
Gas Flow Rate ◽  
Inclusion Removal

Effect of Inert Gas Flow Rate on the Inorganic Bromate Oscillator

1989 ◽  
Vol 162 (Part_1) ◽  
pp. 21-26 ◽  
Author(s):  
L'ubica Adamčíková ◽  
Peter Ševčík
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Inert Gas ◽  
Gas Flow Rate

scholarly journals Welding Current and Shielding Gas Flow Rate Effect to The Intermetalic Layer Formation of Tungsten Inert Gas (Tig) on Dissimilar Metals Weld Joints Between Galvanized Steel and Aluminium Aa 5052 By Using Al-Si 4043 Filler

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Gilang Sigit Saputro ◽  
Triyono . ◽  
Nurul Muhayat
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Intermetallic Layer ◽  
Welding Current ◽  
Galvanized Steel ◽  
Inert Gas ◽  
Welding Parameters ◽  
Dissimilar Metals ◽  
Shielding Gas ◽  
Gas Flow Rate

Tungsten Inert Gas welding of galvanized steel-aluminium useful for weight reduction, improve perform and reduce cost production. The effect of welding parameters, welding current and shielding gas flow rate on the intermetallic formation and hardness of dissimilar metals weld joint between galvanized steel and aluminium by using AA 5052 filler was determined. In this research, welding speed was consistent kept. The welding parameters were obtained by using welding currents of 70, 80 and 90 A, shielding gas flow rate of 10, 12 and 14 litre/min. The intermetallic layer thickness increased by welding currents of 70 A to 80 A, but then it dropped on 90 A. The higher of a shielding gas flow rate, the lower the thickness of the intermetallic layer. The higher of a welding current, the lower the hardness of weld. The higher of a shielding gas flow rate, the greater the hardness of weld. As a result,the maximum hardness by current variation of 70 A and a shielding gas flow rate of 14 Litre/min was 100.9 HVN.

Inclusion Removal at the Free Surface of Steel Bath by Bubble Flotation

2011 ◽  
Vol 399-401 ◽  
pp. 216-222
Author(s):  
Fang Jiang ◽  
Guo Guang Cheng
Keyword(s):  
Free Surface ◽  
Flow Rate ◽  
Bubble Size ◽  
Gas Flow ◽  
Equilibrium Concentration ◽  
Particle Removal ◽  
Gas Flow Rate ◽  
Inclusion Removal ◽  
Particle Layer ◽  
Polyethylene Particles

In the present work, physical model experiments were carried out to clarify the inclusion removal at the free surface of steel bath. Polyethylene particles were used to simulate the non-wetting inclusions like alumina and silica. The influence of gas flow rate and bubble size on the inclusion removal at the free surface was evaluated. It is demonstrated that not all particles are removed when they arrive at the free surface of liquid bath, and those which are not removed will get back to the bath. It is found an annular particle layer is formed by the removed particles at free surface, which can capture other particles arriving at the free surface. However, the attachment of particles to the annular particle layer is not stable, and re-entrainment of particles occurs at high gas flow rate. It is shown the overall particle removal is determined by a balance of removal and re-entrainment. The particle removal constant increases with the increase in the gas flow rate, but decreases with the increase in bubble size. The equilibrium concentration of particles increases with the increase in gas flow rate and bubble size.

Desulfurization of Hot Metal Through In Situ Generation of Magnesium in 30-kg Molten Iron Bath-Influence of Inert Gas Flow Rate

2013 ◽  
Vol 85 (5) ◽  
pp. 927-934 ◽  
Author(s):  
Anil Kumar ◽  
Zachariah Elanjickal Chacko ◽  
Madurai Malathi ◽  
Kesri Mino Godiwalla ◽  
Satish Kumar Ajmani ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Molten Iron ◽  
Inert Gas ◽  
Gas Flow Rate ◽  
Hot Metal ◽  
In Situ Generation ◽  
Iron Bath

Metal Inert Gas (MIG) Welding Process Optimization for Joining Aluminum 5754 Sheet Material Using OTC/Daihen Equipment

Manufacturing ◽  
2003 ◽  
Author(s):  
R. Koganti ◽  
C. Karas ◽  
A. Joaquin ◽  
D. Henderson ◽  
M. Zaluzec ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Process Parameters ◽  
Flow Rate ◽  
Gas Flow ◽  
Power Input ◽  
Interaction Effects ◽  
Inert Gas ◽  
Weld Penetration ◽  
Mig Welding ◽  
Gas Flow Rate

The development of lightweight vehicles, in particular aluminum intensive vehicles, require significant manufacturing process development for joining and assembling aluminum structures. Currently, 5xxx and 6xxx aluminum alloys are being used in various structural applications in a number of lightweight vehicles worldwide. Various joining methods, such as MIG, Laser and adhesive bonding have been investigated as technology enables for high volume joining of 5xxx, and 6xxx series alloys. In this study, metal inert gas (MIG) welding is used to join 5754 non-heat-treatable alloy sheet products. The objective of this study is to develop optimum weld process parameters for non-heat-treatable 5754 aluminum alloys. The MIG welding equipment used in this study is an OTC/Daihen CPD-350 welding systems and DR-4000 pulse power supply. The factors selected to understand the influence of weld process parameters on the mechanical properties and metallurgy (weld penetration) include power input (torch speed, voltage, current, wire feed), pulse frequency, and gas flow rate. Test coupons used in this study were based on a single lap configuration. A full factorial design of experiment (DOE) was conducted to understand the main and interaction effects on joint failure and weld penetration. The joint strengths and weld penetrations are measured for various operating ranges of weld factors. Post weld analysis indicates, power input and gas flow rate are the two signficant factors (statistically) based on lap shear load to failure and weld penentration data. There were no 2-way or 3-way interaction effects observed in ths weld study. Based on the joint strength and weld penetration, optimum weld process factors were determined.

scholarly journals Gas Flow Rate Measurement by Inert Gas Concentration Method

1970 ◽  
Vol 6 (1) ◽  
pp. 39-44
Author(s):  
Koichi IINOYA ◽  
Nobutoshi TANAKA ◽  
Matsuhiro KIMURA
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Inert Gas ◽  
Rate Measurement ◽  
Gas Flow Rate ◽  
Flow Rate Measurement ◽  
Gas Concentration ◽  
Concentration Method

Production of Size-Selected CuXSn1-X Nanoclusters

2011 ◽  
Vol 295-297 ◽  
pp. 70-73 ◽  
Author(s):  
Ahmad I. Ayesh ◽  
Naser Qamhieh ◽  
Saleh Thaker Mahmoud ◽  
Hussain Alawadhi
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Discharge Power ◽  
Inert Gas ◽  
Gas Flow Rate ◽  
Quadrupole Mass ◽  
Gas Condensation ◽  
Operation Conditions ◽  
Source Operation ◽  
Production Mechanisms

Composites of copper–tin (CuxSn1-x) nanoclusters were synthesized using the magnetron dc sputtering gas–condensation technique. Targets with controlled ratios of Sn to Cu were used to produce CuxSn1-xwith different compositions. The effects on the nanocluster size and yield of the sputtering discharge power, inert gas flow rate, and aggregation length were investigated using a quadrupole mass filter. The sputtering discharge power was optimized to maximize the nanocluster yield. The results show that as the inert gas flow rate increases the nanocluster size increases and then decreases. These dependences could be understood in terms of the dominant nanocluster production mechanisms. This work demonstrates the ability of controlling the CuxSn1-xnanoclusters’ size and composition by optimizing the source operation conditions.

scholarly journals Enhancing corrosion resistance of A-TIG welded UNS S32750 joints by optimizing its technological parameters

2020 ◽  
Vol 26 (3) ◽  
pp. 249-257
Author(s):  
A. Arunmani ◽  
T. Senthilkumar
Keyword(s):  
Corrosion Resistance ◽  
Mass Loss ◽  
Process Parameters ◽  
Flow Rate ◽  
Welding Speed ◽  
Gas Flow ◽  
Welding Current ◽  
Inert Gas ◽  
Gas Flow Rate ◽  
Pitting Potential

In this paper, an attempt was made to improve the corrosion resistance of activated tungsten inert gas welded super duplex stainless steel such as UNS S 32750. Joints were fabricated by fluctuating the important process parameters such as welding speed, shielding gas flow rate and welding current, using NiO as activation flux. A central composited design model was developed for identification of the Activated Tungsten Inert Gas welding process parameter values for fabricating twenty joints. The welded joints were subjected to pitting corrosion test using an electrochemical corrosion testing system and salt spray testing was done for 48 h. Empirical relationships were developed for the process parameters with variations in the pitting potential and the rate of mass loss. The significance of the developed model was ascertained using analysis of variance method and optimization was done using response surface methodology. The joints fabricated at welding speed of 54.26 mm/min, welding current of 157 A and gas flow rate of 14.8 L/min, were found to have maximum pitting potential of -252.36 eV and minimum mass loss of 0.0108 g. Using validation experiments, the error was identified within three percentage which indicated that the optimization model was developed with very high predictability.

Sign in / Sign up

Export Citation Format

Share Document