Casting Device and Casting Method

• US 20160038995A1
• Filed: 10/22/2015
• Published: 02/11/2016
• Est. Priority Date: 07/25/2013
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: FENT, Andreas, SCHAECHTL, Richard, LANG, Hubert, STIER, Marcus, SUMMER, Thomas
• Granted Patent: US 10,618,105 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B22C 9/02 Sand moulds or like moulds for shaped castings
• CPC Class Codes: B22C 9/06 Permanent moulds for shaped castings moulds for ingots B22D7/06
• CPC Class Codes: B22C 9/065 Cooling or heating equipment for moulds
• CPC Class Codes: B22C 9/101 Permanent cores
• CPC Class Codes: B22D 15/02 of cylinders, pistons, bearing shells or like thin-walled objects
• CPC Class Codes: B22D 25/02 by its peculiarity of shape; of works of art cylinders, pistons B22D15/02
• CPC Class Codes: B22D 27/11 making use of mechanical pressing devices

Abstract

A casting device and casting method are provided for producing components, in particular cylinder heads. The device includes a reusable steel upper core, which can be lifted off from the component to be produced and which has a movable displacing element. The displacement element can be pressed into the component to be produced for dense feeding. In a method for producing a cylinder head by casting, wherein the steel upper core is used as a substitution for a sand cover core, for dense feeding the displacing element is pressed into the melt that forms the cylinder head in the solidified state.

Claims

1. A casting device for producing components, the casting device comprising:

a reusable upper steel core which is liftable from a component to be produced, wherein

the reusable upper steel core comprises a movable displacement element, and

the movable displacement element is configured to be pressable into the component to be produced.

2. The casting device according to claim 1, wherein the casting device is configured as a cylinder head casting device, the reusable upper steel core being configured for a cylinder head.

3. The casting device according to claim 1, wherein the movable displacement element is disposed at a position of the upper steel core that correlates with a position of the component to be produced which, in a final state, forms a clearance.

4. The casting device according to claim 2, wherein the displacement element is disposed at a position of the upper steel core which correlates with a spark-plug well of the cylinder head.

5. The casting device according to claim 4, wherein the displacement element is a moveable steel pin.

6. The casting device according to claim 1, wherein the displacement element is a moveable steel pin.

7. The casting device according to claim 1, wherein a surface of the reusable upper steel core facing the component to be produced has at least one projection.

8. The casting device according to claim 5, wherein a surface of the reusable upper steel core facing the component to be produced has at least one projection.

9. The casting device according to claim 1, further comprising:

a cooling and/or heating unit configured with the movable displacement element.

10. The casting device according to claim 8, further comprising:

a cooling and/or heating unit configured with the movable displacement element.

11. A method of manufacturing a cylinder head by a casting method, the method comprising the acts of:

providing a reusable upper steel core, rather than a sand cover core, configured to be liftable from the cylinder head to be produced, the reusable upper steel core having a movable displacement element; and

pressing the movable displacement element into a melt which, in a solidified state, forms the cylinder head to be produced, in order to provide a dense feeding.

12. The method according to claim 11, wherein the act of pressing the displacement element into the cylinder head to be produced is carried out after the melt has cooled-off to an extent such that an external skin has been formed thereon.

13. The method according to claim 12, wherein the displacement element is configured as a steel pin and is pressed into the cylinder head to be produced at a position forming a spark-plug well.

14. The method according to claim 11, wherein the displacement element is configured as a steel pin and is pressed into the cylinder head to be produced at a position forming a spark-plug well.

15. The method according to claim 11, further comprising the act of:

cooling and/or heating the displacement element.

16. The method according to claim 13, further comprising the act of:

cooling and/or heating the displacement element.