Investigation on nitrogen increase in steel in the process of electroslag remelting
In response to the traditional electric slag furnace that performs remelting under atmospheric conditions,the products produced have a series of problems such as burning of active elements and large composition differences be-tween the head and tail,gas absorption during the electric slag process,strong dependence on human experience in the re-melting process,and inability to achieve constant melting rate control.For this reason,our factory has introduced a large number of protective atmosphere electric slag furnaces to solve the above problems,in order to achieve quality upgrades of various products.Although the inert atmosphere above the slag pool is created and maintained by filling the furnace with Ar gas to isolate air during the use of a protective electric slag furnace,there is still a serious increase in nitrogen at the beginning and end of the production of hot work die steel controlled nitrogen varieties in the protective atmosphere electric slag furnace,even exceeding the standard.Therefore,our factory has established a dedicated research team to study the mechanism of nitrogen increase in protective atmosphere electric slag furnaces.At the same time,various influencing factors have been eliminated through various experiments,and relevant control measures have been proposed to solve the problem of nitrogen increase in electric slag.
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维普
