PRESENTATION
Foundry
Is given а brief survey of the existing induction furnaces as well as the main merits of melting technologies in Junker medium frequency furnaces are advanced
The article gives the results of study by mathematical planning of pilot processes of the АК7Ч and AK5M4 aluminum alloys refining with nitrogen and argon.
The article gives the results of study of processes of aluminum alloys refining by fluxes added with MgCl2, CiiCl2, NaF and molten copper refining through the melt hydrogen pressure and temperature control.
This summary covers the moulding sand pulse compacting methods found practical application.
By the specific chemical and phase compositions as well as the shape of grains close to spherical the refractory fillers can find application in foundry production as manufactured fillers.
High properties of dolomite obtained in Belarus determines its application as a steel making flux after preliminary preparation. The technology is developed and pilot production tests are carried out with positive results obtained.
Are given the results and is shown the perspective of production of high quality billets from non-ferrous Al-Cu base metals waste by the continuous casting process.
Were studied features of graphite formation in cast iron when treated with different spheroidizing alloying compositions. A new mechanism of graphitizing inoculation was considered.
The article describes а continuous vertical casting machine for production of billets from precious metal for jewelry production.
The article gives analysis of the operation efficiency of various foundry furnaces, in particular, the cupola and forging furnaces. It studies heat balances of the furnaces and possible application of secondary power resources (SPR) — exhaust gases heat. It gives evaluation of the cupola and heating furnace SPR exergy with study and presentation of the most rational variants of solutions providing for the SPR minimization.
The article describes the problems of moulding sands proportioning, the effect of the proportioning accuracy on the shape and casting, gives the auger proportioner design.
The article gives the technology of production of aluminum-graphite hardener with the use of aluminum powders obtained by grinding the aluminum alloys shaving waste.
Metallurgy
The article gives solution to the 3-D problem of hydrodynamics and heat transfer in the process offiling the intermediate ladle of the continuous billet casting machine.
The article gives analytical solution to the ingot solidification problem based on the “equivalent sources method”. Accuracy and correctness of the obtained final relations are proved.
The article gives analytical solution to the ingot solidification problem based on the “equivalent sources method”. Accuracy and correctness of the obtained final relations are proved.
The article gives analytical solution to the problem of nonsymmetric heating of blooms in continuous furnaces based on the '‘equivalent sources method’'. Parametrical identification by the results of industrial experiments has shown sufficient accuracy and reliability of the method.
The article describes а new approach to determination of the boundary conditions in solution of the problem of solidification and cooling of billets in casting at the section continuous casting machine. Quantitative evaluation of thermal stresses in the solidified billet skin in given.
The article gives the results of parametric identification of mathematical models of nonsymmetric heat- of metal in continuous pusher furnaces with powered hearth.
Production news
Change of condition of blasting through tuyere is crucially important for lowering casting defects
Express Information
Anniversary
ISSN 2414-0406 (Online)