# US 8,770,263 B2 · Method of casting damped part with insert > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,263 B2 - Document ID: US8770263B2 - Status: Granted - Kind: B2 - Application number: 13/113,619 - Filed: 2011-05-23 - Published: 2011-09-15 - Granted: 2014-07-08 - Earliest claimed: 2007-07-20 - Assignees: GM Global Technology Operations LLC - Applicants: Michael D. Hanna; Mohan Sundar; Andrew Schertzer - Inventors: Michael D. Hanna; Mohan Sundar; Andrew Schertzer - Web page: https://patentgrep.com/patent/US8770263B2 ## CPC - B22D 19/0081: {pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal} - B22D 19/00: Casting in, on, or around objects which form part of the product (B22D23/04 takes precedence; alumino-thermic welding B23K23/00; coating by casting molten material on the substrate C23C6/00) - B22D 19/04: for joining parts - Y10T 428/24628: Nonplanar uniform thickness material - 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 method including positioning an insert in a vertical mold including a first mold portion and a second mold portion; and casting a material including a metal around at least a portion of the insert. ## Claims ### Claim 1 A method comprising: treating a first portion of the insert so that molten material comprising a metal does not wet the first portion of the insert and bond thereto upon solidification, and a second portion of the insert being constructed and arranged so that metal cast over the second portion bonds to the second portion upon cooling; and pre-heating an insert to a temperature ranging from 50-80° C. to remove moisture on the insert and thereafter loading the insert into a first mold portion of a vertical mold for casting metal, and casting metal over the insert and solidifying the metal so that the metal bonds to the second portion and not to the first portion wherein the insert comprises a bent tab so that the insert hangs on the first mold portion of the vertical mold. ### Claim 2 (depends on 1) A method as set forth in claim 1 wherein the pre-heating the insert comprises heating the insert in an oven. ### Claim 3 (depends on 1) A method as set forth in claim 1 wherein the temperature is about 75° C. ### Claim 4 (depends on 1) A method as set forth in claim 1 further comprising closing a second mold portion and the first mold portion together and casting a material comprising a metal around at least a portion of the insert. ### Claim 5 (depends on 1) A method as set forth in claim 1 further comprising pre-treating the second portion of the insert before positioning the insert in the vertical mold. ### Claim 6 (depends on 5) A method as set forth in claim 5 wherein the pre-treating comprises at least one of sand blasting, grit blasting, glass bead blasting, chemical washing, or water jet degreasing. ### Claim 7 (depends on 1) A method as set forth in claim 1 wherein the treating comprises coating at least a portion of the insert to provide a non-wettable surface that prevented molten metal from bonding to the insert at the location of the coating. ### Claim 8 (depends on 7) A method as set forth in claim 7 wherein coating at least a portion of the insert comprises at least one of spraying, dipping, or painting. ### Claim 9 (depends on 7) A method as set forth in claim 7 further comprising baking the insert. ### Claim 10 (depends on 7) A method as set forth in claim 7 further comprising pouring the material into the vertical mold so that the metal is filled from the bottom of the mold up. ### Claim 11 (depends on 1) A method as set forth in claim 1 further comprising pouring the material into at least one gate located at the bottom of the vertical mold. ### Claim 12 (depends on 11) A method as set forth in claim 11 wherein the insert comprises at least two tabs and wherein only one gate is positioned in between two adjacent tabs. ### Claim 13 (depends on 10) A method as set forth in claim 10 wherein the flow rate of the material poured into the vertical mold is such that turbulent flow is avoided. ### Claim 14 (depends on 4) A method as set forth in claim 4 further comprising controlling the flow of the molten metal into the first and second mold portions to prevent the casting of the material comprising molten metal around the insert from washing away the coating. ### Claim 15 (depends on 1) A method as set forth in claim 1 wherein the coating comprising at least one of particles, flakes, or fibers. ### Claim 16 (depends on 1) A method as set forth in claim 1 wherein the loading the insert into a first mold portion comprises loading an insert into a setting fixture. ### Claim 17 (depends on 16) A method as set forth in claim 16 wherein the setting fixture comprises a vacuum component. ### Claim 18 (depends on 16) A method as set forth in claim 16 wherein the setting fixture comprises at least one ejector pin. ### Claim 19 (depends on 1) A method as set forth in claim 1 wherein the insert is pre-heated to a temperature ranging from 50-75° C. ### Claim 20 (depends on 7) A method as set forth in claim 7 further comprising baking the insert with the coating to a temperature of 140-350° C.