Correct use of evaporation boats

Evaporation boat is a collective term for all evaporation boats. According to different uses, its composition and formula also vary. The materials involved include boron nitride, titanium diboride, aluminum nitride, aluminum oxide, zirconia, silicon carbide, silicon nitride, and other non-metallic compounds.

Operation of the evaporation boat

When using a new evaporation boat, control the accurate time through screen operation, gradually increase the voltage for 5 minutes each time, and then raise the holmium again (such as 7v-8v-9v) and start according to the program set by the aluminum plating machine. Gradually heat and evaporate the boat for annealing to release internal stress, while the gas absorbed in the boat material is also released. Melt the aluminum wire with an evaporation boat and let it wet for about 20 minutes. Excessive wetting will reduce the stability of the evaporating gas and greatly shorten the service life of the evaporation boat.

The longer the operation time, the hotter the evaporation boat will be. To maintain a continuous decrease in voltage, pay attention to reducing the amount of aluminum wire fed. During continuous production. The voltage of the evaporation boat at the end of the first thin film evaporation is lower than the voltage at the beginning of the evaporation boat. The 500 ℃ high-temperature resistivity is a resistivity used and finalized in the design of the evaporation boat, which is matched with the evaporation power supply.

After the first use of the evaporation boat, gently brush the aluminum slag on the surface of the boat groove with a brush, and clean it with a steel wire brush after each use. After each cleaning. Check the evaporation boat to ensure it is clamped, otherwise it may jump off during startup.

When the evaporation boat starts but one of them is not lit, do not continue to feed the aluminum wire to generate arc light until it is lit. You need to first adjust the aluminum wire to approach the evaporation boat forward, and then start the evaporation boat to ignite. Otherwise, not only will it damage the fixture, but it will also damage the evaporation boat, shortening its lifespan.

The evaporation range of the evaporation boat with a large aluminum attachment surface is wider, the evaporation layer is easy to control, and the duration is longer.

The temperature of the working environment directly affects the lifespan of the evaporation boat.