Abrégé

The invention relates to a method for producing a riser and a riser obtainable by said method. On production, a breaker core (6) is used around the opening (7) of which a web (13) is arranged. The riser sleeve (1) is only hardened to the point that said sleeve can be plastically moulded. The breaker core (6) and riser sleeve (1) are joined such that the web (13) is introduced into riser opening (3) of a riser cavity (2) until the outer surface (14) of the web (13) contacts the wall (15) of the riser cavity. The riser is then fully hardened. A fixed connection between the breaker core (6) and riser sleeve (1) can be obtained without it being necessary to use adhesive between the contact surfaces.

Classes IPC  ?

• B22C 9/08 - Parties concernant l'alimentation en métal liquide, p. ex. attaques circulatoires, filtres

Abrégé

The present invention relates to a composition for the production of insulating and/or exothermal feeders, and other hopper and feeding elements for casting molds. In order to provide a composition by means of which insulating and/or exothermal feeders and other hopper and feeding elements can be produced for casting molds, having a relatively low degree of emissions of gas and decomposition products during the burn-off of the shaped bodies, which may have an adverse effect on the properties of the casting, the invention provides a composition comprising fireproof hollow balls and a binder composition comprising an aqueous dispersion of a thermoplastic plastic polymer and a swelling binder.

Classes IPC  ?

• B22C 1/00 - Compositions des matériaux réfractaires pour moules ou noyauxLeur structure granulaireCaractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules
• B22C 9/08 - Parties concernant l'alimentation en métal liquide, p. ex. attaques circulatoires, filtres

Abrégé

The invention relates to an open-cell ceramic foam for producing filters used for filtering molten light-weight and nonferrous metals. In order to devise an open-cell ceramic foam that has relatively high flexibility, the ceramic foam contains at least 30 percent by weight of enstatite.

Classes IPC  ?

• B01D 39/00 - Substance filtrante pour fluides liquides ou gazeux

Abrégé

The invention relates to a feeder for metal casting with a feeder head that encloses a compensation space (4) that is open to the environment via at least one compensation opening (5), characterized by the fact that the compensation space (4) is at least partially lined with an insulation layer (2, 10), which prevents direct contact between the liquid metal and the material of the feeder head (1) when said liquid metal flows into the compensation space (4).

Classes IPC  ?

• B22C 1/00 - Compositions des matériaux réfractaires pour moules ou noyauxLeur structure granulaireCaractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules
• B22C 9/08 - Parties concernant l'alimentation en métal liquide, p. ex. attaques circulatoires, filtres