Moulding Materials

Term for all dry, moist, pasty or liquid materials for the production of casting moulds which are compacted, chemically or physically bound, such as moulding and core moulding materials, natural sand, flowing sand, moulding slip and ceramic moulding compounds. Moulding material is a material composed of different components.

The moulding material used in foundries for the production of lost moulds consists of the moulding base material, the moulding material binder and the moulding additives.

The requirements for moulding materials are defined depending on the technology of their processing and the casting process with the following properties: pictorial quality, flowability, dimensional stability, gas permeability, high-temperature resistance, decomposability and recyclability.

Moulding materials can be fundamentally divided according to the moulding material binder system as follows:

  • bentonite-bonded moulding materials, which also include bentonite-oil-bonded moulding materials for manual processing,
  • inorganic moulding sand binder systems with silicate binders (water glass), cement, silica brines, gypsum and salt binder systems,
  • organic moulding material binder systems, resin-bonded with furan resins, phenolic resins and phenolic resol resins.

About the Topic

[Translate to English:] Maschine Eirich
GIESSEREI PRAXIS 2020/1-2

Big class now also in small

Eirich now offers Evactherm® technology for moulding sand preparation from a capacity of 7.5 m³/h. The first small vacuum mixer was commissioned in…

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PGF 2019

Moulding Material Testing

Electronically controlled moulding material testing This enables the integrated characterisation of a moulding material to assist with successful…

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Regeneration

Regeneration of resin bonded moulding materials Moulding material regeneration is the recovery of sands from cold resin bonded used moulding…

PGF 2019

Coating

Purpose of coating in mould and core making Improving the surface of the casting in regards to cleanliness, no adhesions and a smooth surface In…

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Lustrous Carbon Former

Included Topics: Comparison of various stable carbon carriers Comparison of lustrous carbon formers Effects of various moulding material…