Temat: treatment technologies - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Aluminium Alloys Smelting in Shaft- Reverberatory Furnaces in a Liquid Bath Mode
Autorzy:: Grachev, V.
Powiązania:: https://bibliotekanauki.pl/articles/382712.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
heat treatment
aluminum alloys
smelting
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
obróbka cieplna
stopy aluminium
wytapianie
Opis:: The aim of research was creation of a furnace for aluminum alloys smelting “in a liquid bath” in order to reduce metal loss. In the paper, the author demonstrates the results of research on smelting of aluminum alloys in a shaft-reverberatory furnace designed by the author. It has been shown that smelting aluminum alloy in a liquid bath was able to significantly reduce aluminum loss and that shaft-reverberatory design provided high efficiency and productivity along with lower energy costs. Ensuring continuous operation of the liquid bath and superheating chamber, which tapped alloy with the required texture, was achieved by means of the optimal design of partition between them. The optimum section of the connecting channels between the liquid bath of smelting and the superheating chamber has been theoretically substantiated and experimentally confirmed. The author proposed a workable shaft-reverberatory furnace for aluminum alloys smelting, providing solid charge melting in a liquid bath.
Źródło:: Archives of Foundry Engineering; 2017, 17, 2; 183-189
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Advantages of Melting Cast Iron in Gas Cupola Furnaces
Autorzy:: Grachev, V.
Powiązania:: https://bibliotekanauki.pl/articles/383345.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
heat treatment
melting
gas cupola furnace
gas combustion mode
refractory filling
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
obróbka cieplna
topienie
Opis:: The author has developed and patented several types of gas cupola furnaces, which, due to replacing coke with gas, do not emit carbon monoxide, sulfur dioxide and coke dust. The author has defined the optimal modes of gas-and-air mixture combustion, i.e. the optimal coefficient of air discharge and gas mixture escape speed in melting cast iron. It has been experimentally proved that from the point of view of obtaining the maximum temperature, the optimal was the process with some lack of air, i.e. with α = 0.98. The results of metallurgical studies used in the article allowed to develop an optimal structure of the gas cupola furnace with a heterogeneous refractory filling, and to establish the optimal composition of the filling. For the first time the optimal composition of the filling is given: 40% of chamotte, 30% of high-alumina refractory, 30% of electrode scrap. It has been noted that when gas cupola furnaces were used, the main environmental advantage was the reduction of dust emission into the atmosphere, CO and SO2 content.
Źródło:: Archives of Foundry Engineering; 2018, 18, 3; 76-80
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Features of Cast Iron Smelting in Induction Crucible Furnaces
Autorzy:: Grachev, V.
Powiązania:: https://bibliotekanauki.pl/articles/381609.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
heat treatment
cast iron smelting
electric induction furnace
crucible
innowacyjne technologie odlewnicze
innowacyjne materiały odlewnicze
obróbka cieplna
hutnictwo żeliwa
piec indukcyjny
tygiel
Opis:: The article describes the trend towards increased use of induction crucible furnaces for cast iron smelting. The use of gas cupola’s duplex process – induction crucible furnace – has been proved the effective direction of scientific and technical advance in the foundry industry. Gas cupolas and induction furnaces are used for cast iron smelting at the Penza Compressor Plant where in the 1960s the author developed and introduced gas cupolas for the first time in the world. In the article, the author represents the findings of the investigation on thermodynamics of crucible reduction of silicon, which is pivotal when choosing the technological mode for cast iron smelting in induction furnaces. The author proposes a new reaction crucible diagram with due account of both partial pressure and activity of the components involved into the process. For the first time ever, the electrochemical mechanism of a crucible reaction has been studied and the correctness of the proposed diagram has been confirmed.
Źródło:: Archives of Foundry Engineering; 2017, 17, 3; 45-50
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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