The invention discloses a
metal PTC
electric heating tube component of an air conditioner. A wound PTC heating filament of which two ends are sleeved and fixed with a conductive bar respectively, is placed in the center of a
copper-plated iron
pipe; a part of the conductive bars at two ends of the wound PTC heating filament is positioned outside the
copper-plated iron
pipe;
magnesium oxide powder as
heat conducting and insulating
powder is filled in the
copper-plated iron
pipe; the wound PTC heating filament is tightly pressed in the center of the
magnesium oxide powder in the copper-plated iron pipe; an aluminum pipe of a plurality of aluminum radiating fins is sleeved outside an expansion sleeve of the copper-plated iron pipe, namely the copper-plated iron pipe is tightly matched with the aluminum pipe, and the aluminum pipe is tightly matched with the aluminum radiating fins; and pipe orifices at two ends of the copper-plated iron pipe are sealed by
silicon rubber and then sleeved into a porcelain head. The
metal PTC
electric heating tube component has the advantages of reasonable structure and better safety performance and durability. A manufacturing method for the component comprises the following steps:
cutting the pipe,
grinding the pipe, drilling the pipe, cleaning, winding wires, cleaning,
drying, threading, measuring wires,
spot welding, filling, stuffing a film, measuring withstood
voltage, contracting the pipe, detecting the length of the pipe, middle inspection, peeling, pulling out colloidal particles,
cutting a pin, straightening, inversing pipe angles, expanding the pipe, sealing, measuring the withstood
voltage, measuring insulation, and measuring resistance.