HALCOR S.A. (Athens, Greece), has placed an order with OTTO JUNKER GMBH (Germany)
HALCOR S.A. is a large industrial company which produces copper manufactured and semi-manufactured products for use in second stage industries. The company is producing its copper products according to international standards such as EN, DIN, JIS, BS, etc.
The new roller hearth furnace will be designed for the purpose of bright annealing copper tube in the form of level wound coils and pancake coils, and will be installed in their copper tube production plant in Inofyta, Greece.
The level wound coils are individually loaded onto trays which are then transported into a stacking device which automatically stacks the trays - up to a maximum of 5 trays per stack. Following the stacking procedure, the ends of the individual coils are connected to the atmosphere distribution system of the OTTO JUNKER Copper Tube Purging System (CTP system).
The stack is then transported to the furnace line via a cross conveyor. On the entry table the coils are automatically purged with protective atmosphere (N2 + H2). Working on a step continuous basis, the stacks are transported by rollers from one stationary position to the next. After a preset cycle time has elapsed the stack is driven into the vacuum chamber where a vacuum is created. Following a predetermined time, the chamber is then refilled with the process protective atmosphere. The stack is then advanced into the entry vestibule where it remains for one cycle before going into the furnace.
The high convection furnace is indirectly heated under protective atmosphere. The complete line from entry vestibule to the end of the cooling zone remains under protective atmosphere 100 % of the time. The stack of coils moves through the furnace on a step continuous basis during which time the coils are automatically purged by the OTTO JUNKER CTP system. This serves the purpose of removing any lubricant from the bores of the tube as it vaporises. This assists in producing the so-called "Super Clean" tube.
At the end of the heating-up phase the stack is then passed into the cooling section where the material temperature is reduced to a level at which the copper will not oxidise when it comes into contact with air. The stack is then discharged from the line via the exit vacuum chamber. The stack is transported to the destacking device and the coils are removed from the separated trays. The complete materials handling system is included for the conveying and stacking and destacking of the work trays.
HALCOR S.A. awards contract for an indirect gas fired roller hearth furnace for bright annealing 3,250 kg/h of level wound coil DHP copper tube to OTTO JUNKER.
