effects of rotating impeller degassing on microstructure

US20060156924A1

By rotating the impeller, bubbles within the cavitation chamber are stabilized at a location near, or along, the impeller's axis of rotation. Preferably the axis of rotation is positioned in a substantially horizontal plane, thus allowing the rotating impeller to counteract the tendency of the bubbles to drift upward and to accumulate on the upper, inner surfaces of the cavitation chamber.

Ultrasonic degassing of aluminium alloys: basic studies and

Ultrasonic degassing of aluminium alloys: basic studies and practical implementation D. Eskin*1,2, N. Alba-Baena3, T. Pabel4 and M. da Silva5,6 Ultrasonic processing is known to be an efficient means of aluminium melt degassing and structure modification with

(PDF) Effect of moderate magnetic annealing on the

In particular, the effects of the magnetic field processing on the phase lag angle, tan (d), together with the loss and storage moduli were investigated. Experimental2.1 Materials. The epoxy investigated in this study is Aeropoxy manufactured by PTMW Industries, Inc. Aeropoxy is a medium viscosity, unfilled, light amber laminating resin that is designed for structural applications.

Microstructure and Mechanical Properties of MWCNTs

This method remarkably facilitated a uniform dispersion of nanotubes within A356 aluminum alloy matrix as well as a refinement of grain size. In addition, the effects of weight fraction (0.5, 1.0, 1.5, 2.0, and 2.5 wt%) of the CNT-blended matrix on

Effect of rotating gas bubble stirring process parameters

2015/1/1A continuous nonflux inclusion-removal method, rotating gas bubble stirring, is used to purify Mg–10Gd–3Y–0.5Zr melt. The effects of rotating gas bubble stirring process parameters (Ar flow rate, time, and rotating speed) on purifying effectiveness, mechanical properties, and fracture behavior of sand-cast Mg–10Gd–3Y–0.5Zr alloy are studied. The results show that too high or too

(PDF) The effect of Al–5Ti–1B on the microstructure,

Materials Science and Engineering A 485 (2008) 210–217 The effect of Al–5Ti–1B on the microstructure, hardness and tensile properties of Al2O3 and SiC-containing metal–matrix composites M. Emamy a,∗, A. Razaghian b, H

Effect of Mg Content and Heat Treatment on the

The molten metal was degassed using pure dry argon injected into the molten metal (30 ft 3 /h) by a rotary degassing impeller made of graphite. The degassing time/speed was kept constant at 30 min/150 rpm in order to obtain a lower hydrogen level of ~0.1 mL/100 g in the melt.

Melting

In a conclusion, the rotary injection degassing process for 5083 alloy includes rotating speed of 250?400 r/min, gas flow of 1.2?2.0 L/s and period of 10?15 min. And the gas content of solid metal can decrease to 210?3 mL/g or lower. 3.2 Effect of refiner on microstructure of 5083 alloy Microstructures of 5083 alloy ingot are mainly α(Al) phase, β(Mg2Al3), (FeMn)Al6 and Mg2Si.

EffectofFlowandSteelMicrostructureonthe Formation of Iron

the effect of microstructure on the formation of iron carbonate: an annealed low-alloy carbon steel (0.05 wt% C), formally API 5L X65, with ferrite and iron carbide (Fe 3 C) precipitates microstructure, and UNS G10180 (0.18 wt% C), with either a ferritic–pearlitic or a tempered

EffectofFlowandSteelMicrostructureonthe Formation of Iron

the effect of microstructure on the formation of iron carbonate: an annealed low-alloy carbon steel (0.05 wt% C), formally API 5L X65, with ferrite and iron carbide (Fe 3 C) precipitates microstructure, and UNS G10180 (0.18 wt% C), with either a ferritic–pearlitic or a tempered

EFFECT OF TOOL ROTATIONAL SPEED ON MICROSTRUCTURE

The crucible was covered with a flux and degassing agents to improve the quality of aluminum composite casting. The mixture was stirred continuously by using mechanical stirrer for about 10-15 minutes at an impeller speed of 500 rpm. The melt

Ti

The effect of the degassing treatment on the microstructure and the mechanical properties of prealloyed PREP Ti-6Al-4V powder was investigated. An optimized hot degassing condition, heating up to 500deg C, then 2 h holding in vacuum, was determined from the quantitative analysis of the extracted gases as a function of temperature and time.

US20060156924A1

By rotating the impeller, bubbles within the cavitation chamber are stabilized at a location near, or along, the impeller's axis of rotation. Preferably the axis of rotation is positioned in a substantially horizontal plane, thus allowing the rotating impeller to counteract the tendency of the bubbles to drift upward and to accumulate on the upper, inner surfaces of the cavitation chamber.

Degasaggio dell'alluminio fuso

• Evaluation of the effects of ultrasound degassing treatment on the quality of aluminium cast components • Optimization of the process parameters for the different casting processes • The delivered results of hydrogen content in aluminium melt from the existing technologies are depending on the collected sample.

Metals

The presented paper deals with the use of physical modelling to study the degassing process of aluminium melts in the refining ladle by blowing inert gas through a rotating impeller. For the purposes of physical modelling, a plexiglass model in a scale of 1:1 is used for the operating ladle.

Nitrogen Injection in Molten Aluminum in a Tank Degasser

The injection of nitrogen in molten aluminum through a static impeller in a tank degassing unit is studied. Using basic principles of fluid mechanics, it is analyzed the influence of the nozzle diameter on the bubble diameter and the mean residence time of the bubbles

Effects of suspended particles on the rate of mass transfer

article{osti_6196880, title = {Effects of suspended particles on the rate of mass transfer to a rotating disk electrode. [Ferric cyanide]}, author = {Roha, D. J.}, abstractNote = {Limiting currents for the reduction of ferric cyanide at a rotating disk were determined in the presence of 0 to 40 percent by volume of spherical glass beads.

(PDF) Effect of moderate magnetic annealing on the

In particular, the effects of the magnetic field processing on the phase lag angle, tan (d), together with the loss and storage moduli were investigated. Experimental2.1 Materials. The epoxy investigated in this study is Aeropoxy manufactured by PTMW Industries, Inc. Aeropoxy is a medium viscosity, unfilled, light amber laminating resin that is designed for structural applications.

Effect of traveling magnetic field on gas porosity during

2011/9/1Effects of rotating impeller degassing on microstructure and mechanical properties of the A356 scraps [J] Materials Science and Engineering A, 352 ( 2003 ), pp. 294 - 299 Article Download PDF View Record in Scopus Google Scholar

Effect of Degassing Treatment on the Interfacial Reaction of

degassing [4,9], spray degassing [10,11], rotary impeller 228 A R C H I V E S o f F O U N D R Y E N G I N E E R I N G V o l u m e 1 7, I s s u e 2 / 2 0 1 7, 2 2 7 - 2 3 9 degassing [12] and tablet degassing by hexachloroethane (C

Hong Wei Wang

Abstract: On the basis of similarity principle a water-simulative study of the process of rotating impeller degassing (RID) was executed by means of self-made purifying system. The influencing factors on the RID process were studied and laid a theoretical basis for the further development of

Effect of rotating gas bubble stirring process parameters

2015/1/1A continuous nonflux inclusion-removal method, rotating gas bubble stirring, is used to purify Mg–10Gd–3Y–0.5Zr melt. The effects of rotating gas bubble stirring process parameters (Ar flow rate, time, and rotating speed) on purifying effectiveness, mechanical properties, and fracture behavior of sand-cast Mg–10Gd–3Y–0.5Zr alloy are studied. The results show that too high or too

Effect of Degassing Treatment on the Interfacial Reaction

Effects of spray degassing parameters on hydrogen content and properties of commercial purity aluminum, Materials Science and Engineering A. 456, 386-390. [11] Warke, V.S., Tryggvason, G. Makhlouf, M.M. (2005). Mathematical modeling and computer

(PDF) Ultrasonic Treatment to Molten FEM™ Aluminum

Authors had replaced rotating parts of existing technology equipment with ultrasonic probe as per Figure-2. Researchers can consider other parameters such as relative humidity of surrounding environment and its effects on degassing, different type of etc. for

Role of Salt Fluxes in Aluminium Refining: A Review

Some of the degassing techniques include rotary impeller degassing,spray degassing,vacuum degassing Westberg et al[16] studied the environmental effects of application of C 2 Cl 6 in the aluminium melt refining with particular focus on the emission of

Role of Salt Fluxes in Aluminium Refining: A Review

Some of the degassing techniques include rotary impeller degassing,spray degassing,vacuum degassing Westberg et al[16] studied the environmental effects of application of C 2 Cl 6 in the aluminium melt refining with particular focus on the emission of

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