In-cell recycling

In-cell recycling means directly melting down the clean runners and returns at the casting cell and recirculating them to the casting process.

In many cases, in-cell recycling offers significant cost benefits. In addition, quality requirements for castings can generally be met without any restrictions.

Application for magnesium (pressure die casting, hot-chamber and cold-chamber machines):

In-cell recycling is particularly beneficial when using a common magnesium premelting furnace for the new and the recirculated material. From this premelting furnace, the melt flows via a transfer pipe (passively by siphon or actively by a pump) into the magnesiumholding and casting furnace (see Magnesium holding furnace, Magnesium melting and dosing furnace) from where it is pumped into the shot sleeve.

Separating the premelting and holding/casting functions has the following advantages:

  • Flexibility regarding floor space and equipment
  • Easier maintenance
  • Lower downtimes
  • Improved quality of the melt in the casting furnace