... quickly preheating the short aluminum bar before extrusion. parameters:dimension of the rapid heating furnace: 4", 5" , 6", ... LPGmax energy expenditure(working continously):60m³/henergy expenditure of the working temperature:12---13m³T Gasolhigh temperature( ... table:0.75kwfurnace door open/close:pneumaticallynumber of thermocouple:2points,3points,3points,3points,4pointscontrol system:PLC(SIEMENS ...