Casting device and casting method

• US 10,618,105 B2
• Filed: 10/22/2015
• Issued: 04/14/2020
• 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
• Primary Examiner(s): Kerns, Kevin P
• Assistant Examiner(s): Ha, Steven S
• Application Number:
  US14/920,185
• Publication Number:
  US 20160038995A1
• Time in Patent Office: 1,636 Days
• 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 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, such that as a result of the pressing of the movable displacement element into the melt, melt that is displaced by the pressing is distributed across an entirety of the cylinder head to be produced and a manufacturing step is performed where a clearance in the cylinder head to be produced is formed.

2. The method according to claim 1, further comprising the act of:

cooling and/or heating the displacement element.

3. 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, such that as a result of the pressing of the movable displacement element into the melt, melt that is displaced by the pressing is distributed across an entirety of the cylinder head to be produced;

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.

4. 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,

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.

5. The method according to claim 4, further comprising the act of:

cooling and/or heating the displacement element.

6. 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,

wherein the displacement element is pressed into the cylinder head to be produced at a position which, in a final state, forms a clearance in the cylinder head.

7. The method according to claim 6, wherein the clearance is a spark-plug well.