2012 Melting machine other metalworking machinery
Location:cologne
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+49 89 38031644
Marke: Melting machine
Melting machine- preparation and storage (From a Plant for fire aluminizing steel wire)
The furnace for melt preparation is an electrically heated crucible furnace. Ingots of an aluminium master alloy are melted beforehand in the crucible furnace
melting temperature 750°C
The molten aluminium is processed before being fed into the actual melting and holding furnace
Processing is carried out using an impeller device
degassing of the melt
degassing agent argon gas
Slag is separated and bound by adding further agents such as flux to the melt. The separated slag is skimmed off using a ladle
The prepared melt is transferred to the melting and holding furnace via the charging funnel using a ladle
Alternatively
if the technological requirements are met
the melt is pumped from the melting furnace into the holding furnace by a pump
The holding and dosing furnace is heated electrically. (The detailed description can be found in the manufacturer's technical documentation)
The furnace is fed via a so-called feed hopper The feed hopper extends into the melt of the dosing furnace
The dosing furnace is permanently covered with nitrogen gas to prevent oxidation of the melt. The dosing furnace is tightly closed during operation
The front furnace flap can be opened to clean the melt
The dosing furnace is tightly connected to the coating chamber by a detachable flange connection. Liquid melt is pressed into the coating chamber through a riser pipe which reaches into the melt of the dosing furnace. This occurs as follows: nitrogen gas enters the furnace chamber above the melt through an electro-pneumatic control valve
a preset overpressure is built up in the furnace chamber (the furnace diagram can be found in the manufacturer's technical documentation)
The inner chamber pressure is monitored and scanned via pressure sensors. In the event of overpressure
2 renundant safety valves open
The fill level of the melt is monitored by 2 laser sensors. ( The detailed functional description of the sensors can be found in the manufacturer's technical documentation )
The coating chamber is emptied by reducing the overpressure in the furnace interior by closing the electropneumatic control valve and simultaneously opening a shut-off valve
the entire nitrogen control line and the furnace interior is thus depressurised
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