Q: How much temperature drop per meter for molten aluminum launder?

A: Temperature drop per linear meter is a key performance indicator for molten aluminum transfer launder. Excessive temperature loss will force higher tapping temperature, increase energy consumption, hydrogen pickup and dross generation, and bring risks to casting quality.

Typical industry reference values：

1.Open launder without covers：3‑8 ℃/m. Large heat radiation, not recommended for long‑distance transport.
2.Fully insulated pre‑cast launder with thermal covers：0.5‑2 ℃/m. This is the mainstream solution for DC casting, billet casting and strip casting lines.
3.Heated launder system：0.1‑0.5 ℃/m. Used for ultra‑long transfer routes or high‑grade aluminum alloy production.

The real‑world temperature drop is influenced by insulation material quality, launder length, ambient workshop temperature, melt flow rate and pre‑heating operation.
We provide custom launder design, calculating thermal loss according to your on‑site layout to help you keep molten aluminum temperature stable throughout the whole transfer process.