The invention discloses a
metal evaporation device applied to
evaporation coatings. The
metal evaporation device comprises a
ceramic sealing
electrode and a main
metal evaporation body, the main
metal evaporation body comprises a main body support formed by penetrating through three or more aluminum
oxide ceramic wafers through a plurality of supporting screw rods, a
ceramic pipe is arranged outside the main body support in a sleeving mode,
electrode columns are arranged on one aluminum
oxide ceramic
wafer of the main body support in a penetrating mode, a
crucible is arranged on another aluminum
oxide ceramic
wafer of the main body support, heating wires are wound between two adjacent aluminum
oxide ceramic wafers and axially surround the outer wall of the
crucible, and the ceramic sealing
electrode is connected to the electrode columns in a communication mode. According to the device, the
tantalum heating wires or the
tungsten heating wires are adopted as heating media, high temperature can be realized, the heating speed is high, and the
energy consumption is small; a
thermocouple is additionally arranged, the temperature can be visually monitored in the heating process, and material evaporation can be well controlled; evaporation material in the
crucible does not make contact with the heating wires, so that the service life is prolonged; a
tantalum foil layer is arranged, has the heat preservation and heat insulation effect and can lower the
heat energy loss in the heating process.