Method for producing a cast component with an insert

Patent metadata

Field	Value
Publication number	US-9670870-B2
Application number	US-201415026956-A
Country	US
Kind code	B2
Filing date	Sep 25, 2014
Priority date	Oct 2, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A method for producing a cast component may include providing an insert part including an insert body having a circumferential face; coating the circumferential face with an adapter layer made of silicon oxide; arranging the insert part in a casting mold; and positively locking a casting encapsulation of the insert part and the adapter layer with an aluminum alloy to produce the cast component, wherein the aluminum alloy has a magnesium proportion of at least 0.3% by weight.

First claim

The invention claimed is:

1. A method for producing a cast component, comprising:
a) providing an insert part including an insert body having a circumferential face;
b) coating the circumferential face with an adapter layer made of silicon oxide, wherein coating the circumferential face with the adapter layer includes:
dipping the insert body into a solution comprising a water glass; and
curing the water glass to form a silicon oxide via heating the insert body;

c) arranging the insert part in a casting mold; and
d) positively locking a casting encapsulation of the insert part and the adapter layer with an aluminum alloy to produce the cast component, wherein the aluminum alloy has a magnesium proportion of at least 0.3% by weight.

2. The method as claimed in claim 1 , wherein:
the insert part is a cylinder liner and the cast component is a cylinder block for an internal combustion engine.

3. The method as claimed in claim 1 , wherein the water glass comprises Na 2 O 3 Si.

4. The method as claimed in claim 1 , wherein curing the water glass to form the silicon oxide further includes heating the insert body to a temperature of 400° C. or higher.

5. The method as claimed in claim 4 , wherein the water glass comprises Na 2 O 3 Si.

6. The method as claimed in claim 1 , wherein the magnesium proportion of the aluminum alloy is at least 0.5% by weight.

7. The method as claimed in claim 1 , wherein the insert part is a piston ring carrier and the cast component is a piston for an internal combustion engine.

8. A method for producing a cast component, comprising:
providing an insert part including an insert body having a circumferential face;
coating the circumferential face with an adapter layer made of silicon oxide, wherein coating the circumferential face includes:
applying a silicone resin to the circumferential face; and
curing the silicone resin to form a silicon oxide via heating the insert body;

arranging the insert part in a casting mold; and
positively locking a casting encapsulation of the insert part and the adapter layer with an aluminum alloy to produce the cast component, wherein the aluminum alloy has a magnesium proportion of at least 0.3% by weight.

9. The method as claimed in claim 8 , wherein the magnesium proportion of the aluminum alloy is at least 0.5% by weight.

10. The method as claimed in claim 9 , further comprising diluting the silicone resin with a solvent before applying the silicone resin to the circumferential face.

11. The method as claimed in claim 8 , wherein the silicone resin has a layer thickness of 5 μm to 10 μm before curing the silicone resin.

12. The method as claimed in claim 8 , wherein coating the circumferential face further includes diluting the silicone resin with a solvent before applying the silicone resin to the circumferential face.

13. The method as claimed in claim 8 , further comprising diluting the silicone resin with a solvent before applying the silicone resin to the circumferential face.

14. The method as claimed in claim 8 , wherein curing the silicone resin to form a silicon oxide via heating the insert body includes heating the insert body to a temperature of 400° C. or higher.

15. The method as claimed in claim 8 , wherein the insert part is a cylinder liner and the cast component is a cylinder block for an internal combustion engine.

16. The method as claimed in claim 8 , wherein the insert part is a piston ring carrier and the cast component is a piston for an internal combustion engine.

Assignees

• Mahle Int Gmbh

Inventors

• Bischofberger Ulrich
• Gaiselmann Stefan

Classifications

• B22D19/0009 Primary

  Cylinders, pistons · CPC title

• B22D21/007

  with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C · CPC title

• F02F2200/06

  Casting · CPC title

• F02F3/0084 Primary

  the pistons being constructed from specific materials · CPC title

• B22C9/22

  Moulds for peculiarly-shaped castings · CPC title