Riser
The invention relates to a molding riser for casting metals, wherein the riser has a metal riser body. The invention also relates to the use of the riser for casting metals into separable casting molds, in particular horizontally separable casting molds.
1. A riser for metal casting, comprising:
a riser body,
wherein the riser body comprises a riser cavity for receiving liquid metal,
wherein the riser body is configured to have multiple parts and comprises at least a first riser body part and a second riser body part,
wherein the first and second riser body parts are connectable to each other,
wherein the riser cavity is provided in the interior of the at least first and second riser body parts;
wherein the riser body comprises an opening allowing liquid metal to flow into the riser cavity or out of the riser cavity respectively, and
wherein the riser body is made of metal.
2. The riser according to claim 1 , wherein the riser comprises a connecting element that is suitable to for directly or indirectly connecting the riser body to a casting piece or a mold plate, respectively.
3. The riser according to claim 2 ,
wherein the connecting element is a tube-like body and is preferably made of a metal or a plastic material,
wherein the connecting element has a thickness of 0.1 mm to 10 mm, and
wherein, independently thereof, the connecting element has a length of 15 mm to 300 mm.
4. The riser according to claim 2 ,
wherein the connecting element is designed to be retractable and is arranged to be movably supported on the riser body, and
wherein the connecting element moves in relation to the riser body when compressing the molding material, in that the connecting element is at least partially retractable into the riser body ( 2 ).
5. The riser according to claim 2 ,
wherein the connecting element comprises at least one stop and/or one thickening that is configured to prevent the connecting element from slipping into or out of the riser body.
6. The riser according to claim 1 , wherein the riser body comprises a sheet metal.
7. The riser according to claim 6 , wherein the sheet metal has a thickness of 0.1 mm to 1.2 mm.
8. The riser according to claim 1 , wherein the riser body comprises a recess for a centering pin and/or spring pin; or wherein the riser comprises a lid that is arranged in an opening of the riser body, and wherein the lid has an opening for a centering pin or spring pin.
9. The riser according to claim 1 , wherein the first and the second riser body part comprises connecting means for connecting the riser body parts to become the riser body.
10. The riser according to claim 1 , wherein the riser body is horizontally or vertically divisible into at least two riser body parts.
11. The riser according to claim 1 , wherein the first and the second riser body parts are at least substantially equally dimensioned.
12. The riser according to claim 1 , wherein the riser body or the second riser body part or both, tapers in the direction of the opening of the riser body.
13. The riser according to claim 12 ,
wherein the riser body or the second riser body part or both, tapers in stair-like steps or in folds such that the riser body or the riser body part can be deformed accordion-like when applying an external pressure.
14. The riser according to claim 1 , wherein the riser cavity is formed by joining at least the first and the second riser body parts to result in a substantially horizontally or substantially vertically divisible riser body.