Furnace Temperature Control and Aluminum Alloy Batching

2026-06-02

Furnace Temperature Control and Aluminum Alloy Batching IV. Temperature Control So far, we have discussed how to avoid damage caused by creep due to excessive stress and repeated bending during design. We have also discussed the influence of design work on local overheating. In the discussion, the temperature problem of those parts where serious damage to the heat exchanger is caused by overheating has not been mentioned. The level of this temperature depends on the properties of the heat exchanger metal material. These properties include mechanical strength, elongation at high temperature, and corrosion resistance. Therefore, it seems reasonable to measure the metal temperature at dangerous points and use it to control the waste gas inlet temperature of the preheater. However, the only reliable method for determining the most dangerous point is based on existing damage experience from similar heat exchangers. Therefore, in engineering practice, the waste gas temperature entering the heat exchanger is preferably used for control. In general, it is almost always necessary to reduce the waste gas temperature. Mixing in cold air or spraying water can reduce the waste gas temperature. If hard water is used, scale will adhere to the surface of the heat exchanger. The important...