Gtp Schäfer Giesstechnische Produkte Gmbh

Gtp Schaefer Giesstechnische Produkte Gmbh

Gtp Schäfer Gießtechnische Produkte Gmbh

Thomas Schäfer

Jörg Schäfer

Thomas Baginski

Olof Hilger

A riser sleeve () for using when pouring metals into a casting mould includes a riser body (). The riser body () includes

Riser sleeve, method for producing a riser body for the riser sleeve as well as an expander element and core box for producing a riser body

A method for producing a feeder () that is intended for use in a casting mold used for the casting of metals and comprises a feeder body (), which encloses an inner cavity () as a feeder volume, consists of an exothermic and/or insulating material, has at least one lateral wall region () and a bottom region () with a feeder opening () arranged therein for connecting the inner cavity () of the feeder body () to the mold cavity of the casting mold during the casting operation and has a mesh-like fabric consisting of a refractory material covering over the feeder opening () therein, is characterized in that, in the course of the production of the feeder in a core shooter, a piece of fabric () of the mesh-like fabric is positioned in a pattern device () forming the shape of the feeder () in a core box () of the core shooter, in such a way that the peripheral region () of the piece of fabric () positioned in the bottom region () of the later feeder () is at least partially bent up in the direction of the lateral wall region () of the feeder body () and, during the shooting of the feeder (), the bent-up peripheral region () is surrounded by the material shot in and is anchored in the material of the finished shot feeder ().

Method for producing a feeder with a mesh-like fabric covering over the feeder opening thereof

In a method for producing a riser for inserting into a casting mold used for casting metals, the riser includes a riser body () surrounding an inner cavity () as a riser volume and is composed of an exothermic and/or insulating riser material (). To produce a single-piece riser body () in a two-part core box (), a cavity () reproducing the outer contour of the riser body () is formed and, in order to produce the inner cavity (), a reversibly expandable king () is set in the cavity () in such a way that, in the shooting of the riser body (), the wall region (), the cup region (), and the base region () of the riser body are formed by the riser material () introduced into the intermediate space () between the expanded king () and the inner wall () of the cavity ().

Method for producing a riser in a core shooter, and core box suitable for performing the method

The invention relates to a method for producing a feeder configured for use in a casting mold used for casting metals, wherein the feeder has a feeder body () enclosing a feeder cavity () and a through opening () in its base region () for connecting the feeder cavity () to the casting mold and the feeder body () consists of an exothermic material and is enclosed on its outer side at least in regions by an external shell () consisting of insulating refractory material, and wherein the feeder is provided with a feeder foot () arranged externally in its base region () and having an opening () flush with the through opening (). The feeder is characterized in that the feeder body () produced in a first step in a conventional method from an exothermic material is used together with the feeder foot () associated with the base region () to form the external shell () into an injection mold () having a mold cavity () and feeder body and feeder foot are shot simultaneously with the insulating material, wherein the feeder body () including the feeder foot () is positioned in such a manner that the insulating material shot into the mold cavity () of the injection mold () fills in a gap () left between the feeder foot () and the base of the mold cavity () at least one part of the circumference of the feeder foot () and extending over at least a part of the height of the feeder foot (), and the shot external shell () thereby extends at least partially under the feeder foot () with the exception of its opening () and is attached to the base region () of the feeder body () without the use of auxiliary means.

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Frechen, Germany

Thomas Schäfer