scholarly journals The influence of intense preliminary mechanical processing on the slag formation in coal-fired utility boilers

2020 ◽  
Vol 1565 ◽  
pp. 012094
Author(s):  
M Yu Chernetskiy ◽  
E B Butakov ◽  
A P Burdukov
Keyword(s):  
Slag Formation ◽  
Mechanical Processing ◽  
Utility Boilers

Influence of Thermo-Mechanical Processing on the Microstructure of Beryllia Dispersed Nickel Alloys

1973 ◽  
Vol 31 ◽  
pp. 184-185
Author(s):  
M.S. Grewal ◽  
S.A. Sastri ◽  
N.J. Grant
Keyword(s):  
High Temperature ◽  
Nickel Alloys ◽  
Thermomechanical Processing ◽  
Cold Work ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Mechanical Processing ◽  
Uniform Dispersion ◽  
Oxide Particles ◽  
Nickel Base

Currently there is a great interest in developing nickel base alloys with fine and uniform dispersion of stable oxide particles, for high temperature applications. It is well known that the high temperature strength and stability of an oxide dispersed alloy can be greatly improved by appropriate thermomechanical processing, but the mechanism of this strengthening effect is not well understood. This investigation was undertaken to study the dislocation substructures formed in beryllia dispersed nickel alloys as a function of cold work both with and without intermediate anneals. Two alloys, one Ni-lv/oBeo and other Ni-4.5Mo-30Co-2v/oBeo were investigated. The influence of the substructures produced by Thermo-Mechanical Processing (TMP) on the high temperature creep properties of these alloys was also evaluated.

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Mechanical processing of sapphire crystals and producing substrates of them

2000 ◽  
Vol 7 (0) ◽  
pp. 161-173 ◽  
Author(s):  
Д. І. Блецкан ◽  
О. Д. Блецкан ◽  
О. Р. Лук’янчук ◽  
А Л Машков ◽  
Я. М. Пекар
Keyword(s):  
Mechanical Processing

Mechanical Processing of Sintered Materials

2020 ◽  
Author(s):  
Saranjit Singh ◽  
Polymersetty Chandrasekhar
Keyword(s):  
Mechanical Processing ◽  
Sintered Materials

February 9 — Dentist Day in Russia

2020 ◽  
pp. 78-81
Author(s):  
Oksana Rybachok
Keyword(s):  
Early Childhood ◽  
Oral Cavity ◽  
Salivary Glands ◽  
Spiritual Development ◽  
The Body ◽  
Mechanical Processing ◽  
Normal Functioning ◽  
Digestion Process ◽  
Quality Of Food

«Man is what he eats,» these words belong to the great Pythagoras. He meant by these words the connection of the origin of consumed food with the spiritual development of man. In fact, a lot depends on the nature of nutrition, the quality of food and, of course, on the degree of its perception by the body. Digestion process begins not in the stomach, but directly in the oral cavity as a result of mechanical processing of products with teeth and under the influence of the secretion of the salivary glands. That is why healthy teeth are the key to the normal functioning of the whole organism — people should start taking care of their teeth from the early childhood and dentists, who are far from being beloved by everybody and are often carelessly evaded, are called upon to help keep the teeth healthy.

Wet-mechanical processing of a plastic-rich two-dimensional-fraction from mixed wastes for chemical recycling

2021 ◽  
pp. 0734242X2199643
Author(s):  
Möllnitz Selina ◽  
Bauer Markus ◽  
Schwabl Daniel ◽  
Sarc Renato
Keyword(s):  
Large Scale ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Process Water ◽  
Chemical Recycling ◽  
Mechanical Processing ◽  
Municipal Solid Wastes ◽  
Core Element ◽  
Metal Levels ◽  
Mixed Wastes

The recycling of source separated polyolefins (POs) (e.g., light weight packaging waste) is already state of the art. Therefore, further plastic materials contained in mixed wastes have become more important due to increasing legal pressure. Mixed commercial and municipal solid wastes contain large quantities of POs. These mixed wastes would usually be treated in waste incinerators or processed to refuse-derived fuel for cement plants. Large-scale experiments were conducted to assess the potential of such POs from these waste streams for recycling processes. The potential and applicability of a dry-mechanical and subsequently wet-mechanical (Wet-mechanical) processing with the aim of generating a PO concentrate for chemical recycling purposes was assessed. These investigations’ focus was put on the centrifugal force separator technology as the core element of Wet-mechanical processing. In addition to the input material, all output materials and process water streams were chemically and physically characterized to estimate potential treatment or recycling paths. Results demonstrate that a two-stage purification is necessary to produce POs with sufficient purity out of both wastes. Chlorine and heavy metal levels are simultaneously reduced. The increased quantity of impurities only slightly changes the density of the process waters. Process water analyses show that wastewater treatment is necessary before discharge into a receiving water or sewage treatment plant. The sediment does not fulfil any hazard-relevant properties, and different thermal treatment options are possible.

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