Feeder insert and feeder element

Abstract

A feeder element for use in casting molds, includes a first end for placing on a mold model and an opposing second end for connecting to or for carrying an upper feeder part. The feeder element has a passage extending from the first to the second end, wherein the feeder element is two-part or multi-part including a tube-like element which forms the first end of the feeder element; an adapter element with an opening into which the tube-like element is inserted so that it is connected with frictional engagement to the adapter element. The adapter element includes one or more path limiters to limit the insertion path of the tube-element, which are set up so that the outer face of the edge of the tube-like element opposing the first end, with insertion to the maximum extent within the adapter element, is present with its entire periphery, or portions thereof, exposed.

1 . A feeder element for use when casting metals in casting molds, comprising a first end for placing on a mold model and an opposing second end for connecting to or for carrying an upper feeder part, the feeder element having a passage extending from the first to the second end for liquid metal, wherein the feeder element is two-part or multi-part and comprises:
 a tube-like element which forms the first end of the feeder element and has a wall thickness of a maximum of 1.5 mm, and   an adapter element with an opening, into which the tube-like element is inserted in such a way that it is connected with frictional engagement to the adapter element, the adapter element comprising one or more path limiters to limit the insertion path of the tube-element, which are set up in such a way that the outer face of the edge region of the tube-like element opposing the first end, with insertion to the maximum extent within the adapter element, is present with its entire periphery, or in portions of the periphery, exposed.   
   
   
       2 . The feeder element of  claim 1 , wherein the tube-like element
 is not inserted to a maximum extent into the adapter element, so that it can be inserted further into the adapter element until it is prevented from further insertion by the path limiter(s) or   is inserted to a maximum extent so it is prevented from further insertion by the path limiter(s).   
   
   
       3 . The feeder element of  claim 1 , wherein the adapter element forms the second end of the feeder element. 
   
   
       4 . The feeder element of  claim 1 , wherein the tube-like element is cylindrical and/or has a length in the region of 10 to 30 mm. 
   
   
       5 . The feeder element of  claim 1 , wherein the tube-like element is produced from a material which is selected from the group consisting of metallic, ceramic or plastics materials and composite materials based on metal, ceramic and/or plastics material, wherein the tube-like element is preferably, produced from iron, an iron alloy such as steel, aluminum, an aluminum alloy a brass alloy or ceramic. 
   
   
       6 . The feeder element of  claim 1 , wherein the adapter element is produced from an exothermic or insulating molding compound. 
   
   
       7 . The feeder element of  claim 1 , wherein the adapter element has a wall or a wall portion, the thickness of which is greater in portions or everywhere than the thickness of the tube-like element at the first end of the feeder element. 
   
   
       8 . A feeder insert for use when casting metals in casting molds, with a cavity for receiving liquid metal, comprising:
 a feeder element as according to  claim 1  and   an upper feeder part.   
   
   
       9 . The feeder insert as claimed in  claim 8 , wherein the feeder element and the upper feeder part can be displaced into one another. 
   
   
       10 . The feeder insert as claimed in  claim 8 , wherein, in the feeder element, the tube-like element is not inserted to a maximum extent into the adapter element, so it can be inserted further into the adapter element until it is prevented from further insertion by the path limiter(s). 
   
   
       11 . The feeder insert as claimed in  claim 8 , wherein the feeder element and the upper feeder part together form a cavity to receive liquid metal. 
   
   
       12 . The feeder insert as claimed in  claim 8 , comprising:
 a two-part or multi-part feeder element with a first end for placing on a mold model and an opposing second end, wherein the feeder element has a passage extending from the first to the second end for liquid metal and comprises:   a tube-like element which forms the first end of the feeder element and has a wall thickness of a maximum of 1.5 mm at the first end,   an adapter element with a wall, the thickness of which is greater than that of the tube-like element at the first end of the feeder element, and an opening, into which the tube-like element is inserted in such a way that it is connected in a frictionally engaged manner to the adapter element, and   an upper feeder part, wherein the feeder element is connected by its second end to the upper feeder part and/or carries the latter, wherein the feeder element and the upper feeder part can be displaced into one another and form or enclose a cavity.   
   
   
       13 . A construction set for producing a feeder element according to  claim 1 , comprising a tube-like element and an adapter element. 
   
   
       14 . The construction set for producing a feeder insert according to  claim 8 , comprising
 a tube-like element and an adapter element for producing a feeder element and   an upper feeder part.   
   
   
       15 . A method for arranging a feeder insert in a casting mold, comprising the following steps:
 providing a feeder element according to  claim 1 , wherein the tube-like element is either not inserted to a maximum extent into the adapter element, so it can be inserted further into the adapter element, until it is prevented from further insertion by the path limiter(s), or is inserted to such an extent that it is prevented from further insertion by the path limiter(s),   providing an upper feeder part,   placing the upper feeder part on the feeder element, so a feeder insert according to  claim 8  is formed,   arranging the feeder insert in a molding machine, and   pouring molding material into the molding machine, so the outer walls of the feeder insert are contacted by the molding material.   
   
   
       16 . The method as claimed in  claim 18 , wherein
 the upper feeder part and the feeder element are selected such that when the upper feeder part is placed on the feeder element, a feeder insert is formed, in which the feeder element and the upper feeder part can be displaced in one another, and wherein   when the molding material is compressed, the upper feeder part and the feeder element are displaced into one another.   
   
   
       17 . The method as claimed in  claim 16 , wherein the molding machine comprises a model plate and the feeder element is inserted into the molding machine in such a way that it is in direct contact with the model plate with its first end. 
   
   
       18 . The method of  claim 15 , wherein the tube-like element is inserted to such an extent that it is prevented from further insertion by the path limiter(s), and further comprising compressing the molding material, the tube-like element being inserted further into the adapter element until it is prevented from further insertion by the path limiter(s).