SU625111A1

SU625111A1 - Induction pot furnace

Info

Publication number: SU625111A1
Application number: SU762409044A
Authority: SU
Inventors: Михаил Иванович Жудинов; Моисей Григорьевич Коган
Original assignee: Предприятие П/Я В-2190
Priority date: 1976-10-07
Filing date: 1976-10-07
Publication date: 1978-09-25

Description

1one

Изобретение относитс к области металлургии , в частности к конструкци м индукционных тигельных печей дл выплавки металлов .The invention relates to the field of metallurgy, in particular to the structures of induction crucible furnaces for smelting metals.

Известна индукцио1 на тигельна печь, содержаща индуктор и металлический тигель, толщина стенки которого меньше глубины проникновени тока-в нагретый материал тигл 1.Known induction on a crucible furnace containing an inductor and a metal crucible, the wall thickness of which is less than the depth of current penetration into the heated material of the crucible 1.

Однако в известной конструкции тигельных печей значительна часть MOUJIOCTH выдел етс непосредственно в расплавленный металл и это приводит к интенсивной циркул ции металла на зеркале расплава, разрущению окисной пленки и насыщению расплава неметаллическими и газовыми включени ми .However, in the known design of crucible furnaces, a significant part of MOUJIOCTH is released directly into the molten metal and this leads to intensive metal circulation on the melt mirror, destruction of the oxide film and saturation of the melt with non-metallic and gas inclusions.

Цель изобретени - повышение качества металла путем устранени интенсивного перемешивани его в зоне зеркала расплава при сохранении циркул ции расплава в нижней части и обеспечение возможности управлени перемешиваюн1им действием электромагнитных сил.The purpose of the invention is to improve the quality of the metal by eliminating its intensive mixing in the zone of the melt mirror while maintaining the circulation of the melt in the lower part and ensuring the ability to control the mixing action of electromagnetic forces.

Это достигаетс гил юго, что в верхней части нечи между индуктором и тиглем расположено кольцо из :)Л ктронров6дногоThis is achieved by a southwest gil, which is located in the upper part of the nech between the inductor and the crucible, a ring of:) L ktronrov6dnogo

материала, причем толщина кольца и стенки тигл равна или больше глубины проникновени тока в нагретый материал тигл , а кольцо снабжено механизмом его перемещени вдоль оси тигл .material, the thickness of the ring and the crucible wall is equal to or greater than the depth of current penetration into the heated material of the crucible, and the ring is equipped with a mechanism for its movement along the axis of the crucible.

На чертеже дана схема предлагаемой печи .The drawing is a diagram of the proposed furnace.

Печь имеет металлический тигель 1 и индуктор 2. Толщина стенки тигл I меньще глубины проникновени тока. В тигле I помещена щихта 3. В зазоре между верхней частью тигл 1 и индуктора 2 установлено кольцо 4, изготовленное из электропроводного материала. Кольцо может быть выполнено подвижным и установлено с возможностью перемещени вдоль, оси тигл .The furnace has a metal crucible 1 and an inductor 2. The wall thickness of the crucible I is less than the penetration depth of the current. In crucible I, there is placed mea- surement 3. In the gap between the upper part of crucible 1 and inductor 2 there is a ring 4 made of electrically conductive material. The ring can be made movable and mounted for movement along the axis of the crucible.

Механизм перемещени кольца может быть выполнен в виде электрнческой лебедки 5, соединенной с помощью тросов 6 через блоки 7с кольцом 4.The mechanism for moving the ring can be made in the form of an electric winch 5 connected with cables 6 through blocks 7 with ring 4.

Печь работает следующим образом.The furnace works as follows.

Claims

When power is applied to inductor 2 in crucible 1, ring 4 and charge 3, eddy currents are induced causing them to heat. The presence in the gap between the inductor 2 and the crucible 1 of the ring 4 (which increases the thickness of the crucible wall to a level exceeding ...,. /. (The penetration depth of the heat into the heated material of the crucible), ensures that the upper part of the molten metal is ejected from which weakens the circulation of the metal in this part of the volume. 5 If necessary, increase the fraction of the power emitted in charge 3 (especially when the charge is in the solid state), ring 4 is removed from the zone of action of inductor 2 by winding cable 6 on the ba - ° Winch 5. After the melt is melted in order to avoid excessive metal circulation under the action of electromagnetic forces, ring 4 returns to its original position due to its weight during rotation, 5 drum winch 5 in the opposite direction. Formula I: Induction crucible furnace containing an inductor and a metal a crucible, characterized in that, with: the aim of improving the quality of the metal by eliminating the interesting + tive) in the zone; 1a melt while maintaining circulation in the lower ca, in the upper part of the nets between the inductor and the crucible there is a ring of electrically conductive material, and the HiHHB rings and the crucible walls are equal to or greater than the depth of current penetration into the heated crucible material. .

2. The crucible furnace of claim I, characterized in that, in order to enable the mixing action of electromagnetic forces to be controlled, the ring is equipped with a mechanism for its movement along the axis of the crucibles. Sources of information taken into account in the examination: 1. Altman, MB and others. Melting and casting of light alloys. M., 1969, p. 257-258.