# US 2014/0196862 A1 · Method for producing cast components for electrical applications

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- Number: US 2014/0196862 A1
- Document ID: US20140196862A1
- Status: Published application
- Kind: A1
- Application number: 14/157,584
- Filed: 2014-01-17
- Published: 2014-07-17
- Earliest claimed: 2013-01-17
- Assignees: Kienle + Spiess GmbH
- Applicants: Kienle + Spiess GmbH
- Inventors: Andras Bardos; Steffen Bauer; Csaba Walczer
- Web page: https://patentgrep.com/patent/US20140196862A1

## CPC

- B22D 17/00: Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D 17/10: with horizontal press motion
- B22D 17/2069: {Exerting after-pressure on the moulding material}
- B22D 17/2209: {Selection of die materials (for permanent moulds B22C9/061)}
- B22D 17/32: Controlling equipment
- B22D 19/0054: {rotors, stators for electrical motors}
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)

## Abstract

In a method for producing cast components for electrical applications, a hardenable aluminum alloy is melted and filled into a die casting mold. The melted aluminum alloy is cooled by the die casting mold that is comprised of a material that has a thermal conductivity causing the melted aluminium alloy to be cooled at a cooling rate of approximately ≧5×102 K/s. Prior to filling, the melted aluminum alloy is introduced into a fill chamber and the melted aluminum alloy is displaced at a minimal displacement speed within the fill chamber.

## Claims

### Claim 1

A method for producing cast components for electrical applications, the method comprising:
melting a hardenable aluminum alloy;
filling the melted aluminum alloy into a die casting mold;
cooling the melted aluminum alloy by the die casting mold that is comprised of a material that has a thermal conductivity causing the melted aluminium alloy to be cooled at a cooling rate of approximately ≧5×102 K/s.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the cooling rate is approximately ≧103 K/s.

### Claim 3 (depends on 1)

The method according to claim 1, comprising, prior to filling, introducing the melted aluminum alloy into a fill chamber and displacing the melted aluminum alloy at a minimal displacement rate within the fill chamber.

### Claim 4 (depends on 3)

The method according to claim 3, wherein the displacement rate is less than approximately 0.5 m/s.

### Claim 5 (depends on 3)

The method according to claim 3, wherein in the step of filling the melted aluminium alloy is moved from the fill chamber into the die casting mold at a high speed.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the high speed is between approximately 1 m/s and approximately 3 m/s.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the melted aluminum alloy after completion of filling of the die casting mold is exposed to overpressure.