Use of a feeder insert and method for manufacturing a casting mold having a vertical mold separation
A use of a feeder insert, having a volumetric center of gravity which is offset in relation to the opening axis of the passage opening of said feeder insert, in the manufacture of a casting mold having a vertical mold separation and a feeder insert which for dense feeding of the mold cavity during the casting procedure is attached to the casting mold, is described, wherein the feeder insert is positioned in a prefabricated mold part of the casting mold such that the opening axis of said feeder insert runs below the volumetric center of gravity of the latter.
1. A method of manufacturing a casting mold, comprising:
providing a feeder insert ( 24 , 24 ′), having a volumetric center of gravity which is offset in relation to the opening axis ( 62 ) of the passage opening ( 60 ) of said feeder insert ( 24 , 24 ′), in the manufacture of a casting mold ( 1 ) having a vertical mold separation and a feeder insert ( 24 , 24 ′) which for feeding of the mold cavity ( 26 ) during the casting procedure is attached to the casting mold ( 1 ),
wherein the feeder insert ( 24 , 24 ′) is positioned in a prefabricated mold part ( 20 , 22 , 34 ) of the casting mold ( 1 ) such that the opening axis ( 62 ) of said feeder insert ( 24 , 24 ′) runs below the volumetric center of gravity of the feeder insert.
2. The method according to claim 1 , wherein the feeder insert ( 24 , 24 ′) for positioning in the prefabricated mold part ( 20 , 22 , 34 ) of the casting mold ( 1 ) is inserted into a recess ( 32 ) in the prefabricated mold part ( 20 , 22 , 34 ) of the casting mold ( 1 ).
3. The method according to claim 1 , wherein the casting mold ( 1 ) having a vertical mold separation and a feeder insert ( 24 , 24 ′) which for feeding of the mold cavity ( 26 ) during the casting procedure is attached to the casting mold ( 1 ) is manufactured in a molding plant ( 2 ) having an endless mold parts string ( 28 ).
4. The method according to claim 1 , wherein the mold part ( 20 , 22 , 34 ) is prefabricated in a mold chamber ( 6 ) which is partially delimited by a positive pattern ( 40 ) of at least one portion of the feeder insert ( 24 , 24 ′).
5. The method according to claim 1 , wherein the feeder insert ( 24 , 24 ′) is inserted manually or in an automated manner by means of an insertion installation ( 30 ) into the recess ( 32 ).
6. The method according to claim 1 , wherein the feeder insert ( 24 , 24 ′)
has a first end ( 50 ) having a passage opening ( 60 ), a second end ( 52 ), and one or a plurality of side walls ( 54 ) which extend from the first to the second end ( 50 , 52 ) and which delimit a feeder cavity ( 58 ) for receiving liquid metal, and
has a wall portion ( 56 ) which is disposed at the first end ( 50 ) and which forms a lateral wall region of the mold cavity ( 26 ) of the casting mold ( 1 ).
7. The method according to claim 6 , wherein additionally one or a plurality of openings ( 66 ) for ventilating the feeder cavity ( 58 ) and/or for holding means of an insertion installation ( 30 ) engaging therein is/are disposed in the wall portion ( 56 ) which has the passage opening ( 60 ).
8. The method according to claim 6 , wherein the feeder insert ( 24 , 24 ′) in relation to the longitudinal extent thereof in the direction of the opening axis ( 62 ) is non-destructively longitudinally compressible by not more than 5%.
9. The method according to claim 6 , wherein the feeder insert ( 24 , 24 ′) has a cross section having an external cross-sectional face which proceeding from the second end increases in the direction of the first end.
10. The method according to claim 6 , wherein the feeder insert ( 24 , 24 ′) at the second end ( 52 ) thereof, which is disposed so as to be opposite the wall portion ( 56 ) having the passage opening ( 60 ), is configured so as to be open.
11. A method for manufacturing a casting mold ( 1 ) having a vertical mold separation and a feeder insert ( 24 , 24 ′) which for feeding of the mold cavity ( 58 ) during the casting procedure is attached to the casting mold ( 1 ), the method comprising the following steps:
providing or manufacturing a first mold part ( 20 , 22 ), having a vertically running first separation face ( 20 ′, 22 ′), for partially defining the mold cavity ( 26 ),
providing or manufacturing a second mold part ( 22 , 34 ), having a second separation face ( 22 ″, 34 ″) running so as to be complementary to the first separation face ( 20 ′, 22 ′), for partially defining the mold cavity ( 26 ), wherein the first separation face ( 20 ′, 22 ′) of the first mold part ( 20 , 22 ) and the second separation face ( 22 ″, 34 ″) of the second mold part ( 22 , 34 ) are provided for being joined together, configuring part of the mold cavity ( 26 ),
providing or manufacturing a feeder insert ( 24 , 24 ′) for positioning in said second mold part ( 22 , 34 ), wherein the feeder insert ( 24 , 24 ′) has a volumetric center of gravity which is offset in relation to the opening axis of the passage opening of said feeder insert ( 24 , 24 ′),
positioning of the feeder insert ( 24 , 24 ′) in one of said mold parts ( 20 , 22 , 34 ), so that the opening axis ( 62 ) of the feeder insert ( 24 , 24 ′) runs below the volumetric center of gravity of the feeder insert, and subsequently
producing the casting mold ( 1 ) having the mold cavity ( 58 ), by joining together the first separation face ( 20 ′, 22 ′) of the first mold part ( 20 , 22 ) and the second separation face ( 22 ″, 34 ″) of the second mold part ( 22 , 34 ),
wherein one of said mold parts ( 20 , 22 , 34 ) has a recess ( 32 ), and the feeder insert ( 24 , 24 ′) for positioning in said mold part ( 20 , 22 , 34 ) of the casting mold ( 1 ) is inserted into this recess ( 32 ).
12. The method according to claim 11 , wherein the casting mold ( 1 ) having a vertical mold separation and a feeder insert ( 24 , 24 ′) which is attached to the casting mold ( 1 ) is manufactured in a molding plant ( 2 ) having an endless mold parts string ( 28 ).
13. The method according to claim 11 , wherein the first and/or the second mold part(s) ( 20 , 22 , 34 ) is/are manufactured in a mold chamber ( 6 ) of said molding plant ( 2 ), which is partially delimited by a positive pattern ( 40 ) of at least one portion of the feeder insert ( 24 , 24 ′).
14. The method according to claim 11 , wherein the feeder insert ( 24 , 24 ′) is positioned manually or in an automated manner by means of an insertion installation ( 30 ) in the first and/or second mold part ( 20 , 22 , 34 ).
15. A feeder insert ( 24 , 24 ′) having a volumetric center of gravity which is offset in relation to the opening axis of the passage opening of said feeder insert ( 24 , 24 ′), for use according to claim 1 , wherein the feeder insert ( 24 , 24 ′)
has a first end ( 50 ) having a passage opening ( 60 ), a second end ( 52 ), and one or a plurality of side walls ( 54 ) which extend(s) from the first to the second end and which delimit(s) a feeder cavity ( 58 ) for receiving liquid metal, and
has a wall portion ( 56 ) which is disposed at the first end ( 50 ) and which forms a lateral wall region of the mold cavity ( 26 ) of the casting mold ( 1 ),
wherein additionally one or a plurality of openings ( 66 ) for ventilating the feeder cavity ( 58 ) and/or for holding means of an insertion installation ( 30 ) engaging therein are disposed in the wall portion ( 56 ) which has the passage opening ( 60 ), and
wherein the feeder insert ( 24 , 24 ′) in relation to the longitudinal extent thereof in the direction of the opening axis ( 62 ) is non-destructively longitudinally compressible by not more than 5%,
wherein the feeder insert ( 24 , 24 ′) at the second end ( 52 ) thereof, which is disposed so as to be opposite the wall portion ( 56 ) having the passage opening ( 60 ), is configured so as to be open.