vacuum degassing

vacuum degassing

[′vak·yəm dē′gas·iŋ]
(metallurgy)
A process for removing gases from a metal either by melting or heating the solid metal in a vacuum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The first procedure [17, 18] with the minimal application of the vacuum technology can be described as follows: (1) vacuum degassing of a liquid epoxy resin for 48 h under a few millibars; (2) preparation of the nanofiller suspension in isopropyl alcohol and its sonication in an ultrasonic bath for 1.5 h; (3) by-hand mixing the liquid resin and particle suspension in isopropyl alcohol; (4) complete evaporation of alcohol at 150[degrees]C and sonication for 1.5 h to disperse filler in the resin; (5) adding the A1 curing agent to the mixture and by-hand mixing for 7 min; (6) curing of the suspension for 4 h in an oven at 40[degrees]C, for 20 h in air under normal conditions and for 4 h in an oven at 80[degrees]C [19-24].
SMS comprises of: * 200t Electric Arc Furnace (EAF), * 200t ladle Refining Furnace (lF), * 200 Ton vacuum Degassing Unit
Flexible steel refining methods include argon oxygen decarburisation, vacuum oxygen decarburisation, vacuum degassing, and ladle metallurgical station.
By feeding preheated material with a consistent, low input moisture level, a smaller extruder and vacuum degassing system can be used, so that a 30% throughput increase can be realized.
Talking of Vacuum Degassing Furnace (200 T), special steels are processed through the furnace to cater to specific customer needs.
The flakes are then decontaminated through two consecutive extrusion steps including multiple vacuum degassing.
Recommended applications include furnace linings, gas turbine muffler seals, expansion joint seals, insulation for laboratory ovens, gasketing for pollution control equipment and vacuum degassing equipment; super heater seals; gasketing and seals for doors on industrial boilers, wood burning stoves, coke ovens and furnaces, among other applications.
He describes common hidden dangers and remedies for blowout prevention systems, choke lines, choke and kill manifolds, drilling fluid recovery pipeline, relief pipe installation, inside blowout preventers, liquid-gas separators, vacuum degassing, fireproofing and explosion-proofing, and preventing hydrogen sulfide.
At the new electrical steel works, Siemens is projecting and delivering the mechanical and electrical equipment for a new electric arc furnace with a tapping weight of 110 tons, a 110-ton ladle furnace, a vacuum degassing plant and the alloying and additive systems.
It has the option of a bottle sampler with pump and vacuum degassing.
This system represents a significant step with regard to vacuum degassing. The special Multi Rotation System (MRS) allows an increase of the surface in contact with the polymer melt by a factor of approximately 25 compared with conventional twin screw processes.
Control of Sample Cooling Rate--Since the sample can lose some gas through the mechanism of vacuum degassing, control of sample temperature at the start of the test and the cooling rate through the mushy zone can be critical to the volume of gas retained in the pores formed.