Pit furnace used for heat treatment in controlled atmosphere

COD. 1156

Structure
External structure in thick sheet metal, with sturdy steel legs.
All painted
RAL To be defined
Treatment retort in AISI 309 (max temp. 920 ° C), thickness 3 mm nr 2
Trolley for retort transport from heating chamber to cooling chamber No. 1
Insulation in ceramic fiber treated with alumina, d = 180 kg / m3 mm 250
Dimensions
Useful dimensions 750 x 500 x 1.200
Approximate external dimensions (l x p x h) m 8,570 x 5,150 x 3,100
Warm up
By means of resistors installed on ceramic fiber blocks
Installed thermal power kW 48
Maximum use temperature 800 ° C
Protective treatment atmosphere
Protective atmosphere N2-H2 in mixture
N2 (nitrogen) and H2 (Hydrogen) in mixture
Initial wash cycle

At the beginning of the cycles, a vacuum / pressure cycle will be carried out with a vane vacuum pump
Gas consumption Nm³ / h 3.5
Vacuum pump pressure bar <10 ^ -1
Internal fan
Internal fan in special steel, controlled by inverter n. 1
Impeller diameter mm 400
Motor power kW 2
Forced Cooling
Forced cooling chamber built in sheet metal and equipped with large-capacity fan Nr. 1 2 rooms
2 chambers
Control
Control areas No. 1 for each retort
Resistance control Nr. 1 Eurotherm e-power (new)
Control thermocouple n. TC K
Over temperature thermocouple n. 1 TC K
Safety thermoregulator mod. RTC 48
Process thermoregulator mod. BAIN Touch screen 7 “