{"id":4744,"date":"2019-04-19T03:32:40","date_gmt":"2019-04-19T03:32:40","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=4744"},"modified":"2019-06-03T07:08:02","modified_gmt":"2019-06-03T07:08:02","slug":"degassing-machine-pune","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/es\/degassing-machine-pune\/","title":{"rendered":"M\u00e1quina de desgasificaci\u00f3n en Pune"},"content":{"rendered":"

M\u00e1quina de desgasificaci\u00f3n en Pune<\/strong><\/p>\n

Degassing Machine Pune is based on the principle that dissolved hydrogen gas will move from an area of high concentration (in the melt) to an area of low concentration (in the inert gas).
\nEl hidr\u00f3geno gaseoso se dispersa en el metal fundido igual que lo har\u00eda si se liberara en cualquier espacio cerrado.
\nMantendr\u00e1 una concentraci\u00f3n constante durante todo el proceso de fusi\u00f3n.
\nEl hidr\u00f3geno gaseoso puede migrar en el metal l\u00edquido casi tan r\u00e1pido como lo hace en el aire.
\nTherefore, it is unnecessary to bring every ounce of metal in contact with the inert gas.
\nThe efficiency of aluminum degassing is determined by two factors, the transfer rate across the metal\/gas interface and the total surface area available for transfer.<\/p>\n

El cloro fue inicialmente el gas elegido, pero debido a su naturaleza peligrosa, la mayor\u00eda de las fundiciones pasaron a utilizar otros gases.
\nSin embargo, muchas fundiciones no han tenido en cuenta los materiales peligrosos que se liberan al descomponerse cualquier gas especial que se utilice.<\/p>\n

Degassing Machine Pune bubbled specialty gases (Chlorine, Freon, or SF6) through the metal to speed the hydrogen transfer across the metal gas interface into large bubbles.
\nThere was a practical limit to hydrogen removal on humid days because as the large bubbles would break the surface, an increased surface area of metal was created which then absorbed more hydrogen from the humid atmosphere.<\/p>\n

Degassing Machine Pune works on the principle of increasing the surface area of an insert gas exposed to the metal.
\nUna mayor superficie aumenta la velocidad de transferencia del metal al gas inerte.<\/p>\n

\"M\u00e1quina<\/p>\n

Degassing Machine Pune Procedures<\/strong>
\nLa desgasificaci\u00f3n suele llevarse a cabo en una de estas tres \u00e1reas de la planta de fundici\u00f3n:<\/p>\n

1. En la cuchara de transferencia, utilizada para transportar el metal entre los hornos de fusi\u00f3n y los de mantenimiento de temperatura.
\n2. En los hornos de crisol, normalmente justo antes de verter el aluminio fundido.
\n3. En un sistema en l\u00ednea, cuando el metal se transporta a los hornos de mantenimiento a trav\u00e9s de una canaleta.<\/p>\n

The first two options are most common and the degassing operation for both is typically accomplished using a rotary impeller degasser (RID<\/strong>).
\nIn practical terms, all desgasificador rotativo<\/a>s are not created equal. It is important to have an optimum head design to produce highly efficient, small bubbles. Significant cost savings may be realized from shorter treatment times and reduced gas usage.
\nIn the past, the metalcasting industry has gravitated toward simple head designs, which are less costly to machine but produce larger bubbles.
\nThis path presents a false economy due to reduced efficiency.<\/p>\n

Degassing Machine Pune Adjusting Process Parameters<\/strong>
\nOnce the Degassing Machine Pune RID unit<\/strong> is fully lowered into the liquid metal with the shaft in place, the degassing operation can begin.
\nThe best shaft location is slightly off the centerline of the crucible or ladle to help avoid vortex formation with its circular rotation in the liquid metal.
\nAn offset distance of 2-4 in. from the centerline is usually sufficient.
\nThe use of a baffle plate also is a good idea, because the baffle opposes the circulation movement of metal and reduces vortex formation.<\/p>\n

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