# US 2013/0157073 A1 · Bi-Metallic Component And Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157073 A1 - Document ID: US20130157073A1 - Status: Published application - Kind: A1 - Application number: 13/701,904 - Filed: 2011-06-10 - Published: 2013-06-20 - Earliest claimed: 2010-06-10 - Inventors: Pascal Paul Charest; Gregor Leopold Babic; Peter Moonen; Eric Albertus deNijs - Web page: https://patentgrep.com/patent/US20130157073A1 ## CPC - B32B 15/012: {one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy} - B22D 19/0081: {pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal} - B22D 19/04: for joining parts - B22D 19/16: for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills (casting compound ingots B22D7/02) - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - Y10T 428/12361: having aperture or cut - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A bi-metallic component including a first member of a first metal and a second member of a second metal different than the first metal. The first member includes at least one perforation. The second member is directly cast-in-place about a sheet-like portion of the first member and through the perforation to rigidly secure the first and second members. When used in an automotive vehicle, the second metal of the second member is preferably of aluminum and the first metal of the first member is preferably a high strength steel for spot welding to other steel structures. ## Claims ### Claim 1 A bi-metallic component comprising: a first member of a first metal; said first member being sheet-like and defining at least one perforation extending therethrough, the perforation formed by slicing and bending the first metal; and a second member of a second metal different than said first metal and being directly cast-in-place about a portion of said first member and through said perforation to rigidly secure said first and second members. ### Claim 2 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said second metal has a melting point temperature of less than said first metal. ### Claim 3 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said first metal is steel. ### Claim 4 (depends on 3) The bi-metallic component as set forth in claim 3 wherein said first member is formed of sheet metal. ### Claim 5 (depends on 3) The bi-metallic component as set forth in claim 3 wherein the second metal is an aluminum. ### Claim 6 (depends on 1) The bi-metallic component as set forth in claim 1 wherein in said at least one perforation is further defined as a plurality of perforations. ### Claim 7 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said at least one perforation is non-circular. ### Claim 8 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said at least one perforation is circular. ### Claim 9 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said first and second members are components of an automobile. ### Claim 10 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said first member is a bracket and said second member is a suspension mount. ### Claim 11 (depends on 1) The bi-metallic component as set forth in claim 1 wherein said first member further includes a flange adjacent said perforation. ### Claim 12 A method of producing a bi-metallic component, comprising the steps of: forming a first member of a first metal; forming at least one perforation in a sheet-like portion of the first member with the perforation extending through the first member by slicing and bending the first metal; and casting a second member of a second metal different than the first metal onto a portion of the first member and through the perforation to rigidly secure the first and second members. ### Claim 13 (depends on 12) The method as set forth in claim 12 wherein the first metal is steel. ### Claim 14 (depends on 13) The method as set forth in claim 13 wherein the second metal is an aluminum. ### Claim 15 (depends on 12) The method as set forth in claim 12 wherein the first metal has a melting point temperature that is greater than the melting point temperature of the second metal. ### Claim 16 (depends on 15) The method as set forth in claim 15 wherein said step of casting the second member onto a portion of the first member further includes the steps of: providing a mold including a cavity; inserting a portion of the first member into the cavity of the mold; and injecting a molten second metal into the cavity of the mold. ### Claim 17 (depends on 16) The method as set forth in claim 16 wherein the molten second metal in said injecting step is at a temperature greater than the melting point temperature of the second metal and less than the melting point temperature of the first metal. ### Claim 18 (depends on 17) The method as set forth in claim 17 wherein the molten second metal is at a temperature in the range of six hundred and twenty to seven hundred and sixty degrees Celsius (620-760° C.). ### Claim 19 (depends on 12) The method as set forth in claim 12 further including the step of welding the first member to a steel structure. ### Claim 20 A vehicle body comprising: a steel component; a bi-metallic component including a first member of steel and a second member of aluminum; said first member being sheet-like and defining at least one perforation extending therethrough; said second member being of aluminum and being directly cast-in-place about a portion of said first member and through said perforation to rigidly secure said first and second components; and said steel component being welded to said steel first member of said bi-metallic component.