# US 9,038,256 B2 · Forming components made of cast materials

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- Number: US 9,038,256 B2
- Document ID: US9038256B2
- Status: Granted
- Kind: B2
- Application number: 14/096,125
- Filed: 2013-12-04
- Published: 2014-06-12
- Granted: 2015-05-26
- Earliest claimed: 2012-12-11
- Assignees: Georg Fischer Automotive AG
- Applicants: Georg Fischer Automotive AG
- Inventors: Thomas Loehken
- Web page: https://patentgrep.com/patent/US9038256B2

## CPC

- B21D 26/14: applying magnetic forces
- B21D 26/06: by shock waves
- B21J 5/002: {Hybrid process, e.g. forging following casting}
- B21J 5/06: for performing particular operations
- B23P 11/025: {by using heat or cold}
- Y10T 29/49803: Magnetically shaping
- B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)
- B21J: FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P9/04; compacting surfaces by blasting with particulate material B24C1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27)
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Method for non-destructively forming a component made of cast material beyond the quasistatic elongation at break, wherein the component is formed by means of electromagnetic high-speed forming (EMF) method.

## Claims

### Claim 1

A method for non-destructively forming a component made of cast material beyond the quasistatic elongation at break, comprising forming the component by electromagnetic high-speed forming (EMF) so as to non-destructively form a cast component beyond the quasistatic elongation at break, wherein a form-fitting connection to at least one further component is made by the forming of the component made of a cast material.

### Claim 2 (depends on 1)

Method according to claim 1, wherein the strain rate of the EMF method is higher than 100 s−1.

### Claim 3 (depends on 1)

Method according to claim 1, wherein the strain rate of the EMF method is higher than 1000 s−1.

### Claim 4 (depends on 1)

Method according to claim 1, wherein the strain rate of the EMF method is higher than 10 000 s−1.

### Claim 5 (depends on 1)

Method according to claim 1, wherein the cast material is an aluminium alloy.

### Claim 6 (depends on 1)

Method according to claim 1, wherein the cast material is a magnesium alloy.

### Claim 7 (depends on 1)

Method according to claim 1, wherein the cast material is an iron alloy.

### Claim 8 (depends on 1)

Method according to claim 1, wherein the cast material has an elongation at break of less than 20%.

### Claim 9 (depends on 1)

Method according to claim 1, wherein the cast material has an elongation at break of less than 15%.

### Claim 10 (depends on 1)

Method according to claim 1, wherein the cast material has an elongation at break of less than 10%.

### Claim 11 (depends on 1)

Method according to claim 1, wherein the cast material has an elongation at break of less than 5%.

### Claim 12 (depends on 1)

Method according to claim 1, wherein the process temperature for the forming is less than 0.5*Tm of the formed material, where Tm is the melting point of the material.