Method for producing a turbocharger housing

Patent metadata

Field	Value
Publication number	US-9889501-B2
Application number	US-201113878265-A
Country	US
Kind code	B2
Filing date	Sep 27, 2011
Priority date	Oct 8, 2010
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A method produces a casting, in particular a housing of a turbocharger, wherein at least one mold part for forming the casting has a respective parting plane which is arranged at a predetermined angle with respect to the longitudinal axis of the casting, and wherein at least one core element is provided.

First claim

The invention claimed is:

1. A casting method, comprising the steps of:
producing a casting of a turbocharger housing in a molding flask having two mold halves, the two mold halves being a cope and a drag of the molding flask, by:
providing at least one mold part having a parting plane disposed at a predetermined angle of approximately 90° to a longitudinal axis of the casting;
providing at least one first core element, the at least one first core element forming a first external surface of the casting;
providing a second core element, the at least one first core element and the second core element disposed one inside another concentrically about the longitudinal axis of the casting and positioned completely in a bottom half of the molding flask, the second core element forming a second external surface of the casting opposite the first external surface; and
forming a mold of the casting completely in the drag of the molding flask and not in the cope of the molding flask, the drag of the molding flask being continuous along the longitudinal axis of the casting.

2. The method according to claim 1 , wherein the first core element is a water jacket core element.

3. The method according to claim 1 , wherein the first core element has a parting plane disposed at a predetermined angle to a longitudinal axis of the casting.

4. The method according to claim 3 , wherein the predetermined angle is approximately 90°.

5. The method according to claim 1 , wherein the second core element is an oil core element.

6. The method according to claim 1 , wherein the first core element is also provided completely in the one mold half of the molding flask.

7. The method according to claim 1 , which further comprises producing the first core element from molding sand and a suitable binding agent.

8. A casting method comprising the steps of:
producing a casting of a turbocharger housing in a molding flask having two mold halves, the two mold halves being a cope and a drag of the molding flask, by:
providing at least one mold part having a parting plane disposed at a predetermined angle of approximately 90° to a longitudinal axis of the casting;
forming a mold of the casting completely in the drag of the molding flask and not in the cope of the molding flask, the drag of the molding flask being continuous along the longitudinal axis of the casting; and
providing at least two core elements, the two core elements being disposed one inside another concentrically about the longitudinal axis of the casting and positioned in the drag of the molding flask, at least one of the two core elements forming at least one part of an external geometry or external surface of the casting, and the two core elements being completely provided in the drag of the molding flask.

9. The method according to claim 8 , wherein a first core element of the two core elements is a water jacket core element.

10. The method according to claim 8 , wherein the first core element has a parting plane disposed at a predetermined angle to a longitudinal axis of the casting.

11. The method according to claim 10 , wherein the predetermined angle is approximately 90°.

12. The method according to claim 8 , wherein the second core element is an oil core element.

13. The method according to claim 8 , which further comprises producing the at least one of the two core elements from molding sand and a suitable binding agent.

Assignees

• Boening Ralf
• Krauss Stefan
• Nowack Stefan
• Reitz Friedhelm
• Strieder Burkhard
• Continental Automotive Gmbh

Inventors

• Boening Ralf
• Krauss Stefan
• Nowack Stefan
• Reitz Friedhelm
• Strieder Burkhard

Classifications

• B22C9/10

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• B22C9/22

  Moulds for peculiarly-shaped castings · CPC title

• F05D2230/21

  by casting · CPC title

• F04D29/023

  especially adapted for elastic fluid pumps · CPC title

• B22D25/02 Primary

  by its peculiarity of shape; of works of art {(cylinders, pistons B22D15/02)} · CPC title