Patent CA-3080162-A1 (CA)
Title: Methods for recovering machining scrap
Inventor: KRUZYNSKI MARK
IPC: C22B1/00
Filed: 2018-11-20
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY  (PCT) (19) World Intellectual Property Organization International Bureau       (10) International Publication Number (43) International Publication Date WO 2019/100042 Al 23 May 2019 (23.05.2019)         WIPO I PCT (51) International Patent Classification:                                          (74) Agent: HERMAN, Joshua, M.; Greenburg Traurig, C22B 21/00 (2006.01)    C22B 1/00 (2006.01) LLP, 500 Campus Drive, Suite 400, Florham Park, NJ C22B 21/06 (2006.01)                          07932-0677 (US). (21) International Application Number:                                             (81) Designated States (unless otherwise indicated, for every PCT/U52018/061928                        kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (22) International Filing Date: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 20 November 2018 (20.11.2018) DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (25) Filing Language:                    English HR, HU, ED, EL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (26) Publication Language:               English MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (30) Priority Data:                                                                OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 62/588,752                               20 November 2017 (20.11.2017) US          SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant: ARCONIC INC. [1JS/US]; 201 Isabella Street, Pittsburgh, PA 15212-5858 (US).                                                    (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (72) Inventors: KRUZYNSKI, Mark; 2005 Ginoria Court, Ex-GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, port, PA 15632 (US). KRUZYNSKI, Gregg; 305 Black UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, Walnut Drive, Greensburg, PA 15601 (US). SAMPLE, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Vivek; 5110 Baker Lane, Munysville, PA 15668 (US). EE, ES, FI, FR, GB, GR, HR, HU, EE, IS, IT, LT, LU, LV, HOFMANN, Achim; Alramstrasse 29, 81371 Munich MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (DE).                                                                              TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: METHODS FOR RECOVERING MACHINING SCRAP (57) Abstract: A method including providing a quantity of metal, the quan-tity of metM being contaminated by a contaminant including a quantity of carbon; configuring a vacuum induction furnace to operate according to a set of operating parameters, the set of operating parameters being selected based on characteristics of the contaminant, the set of operating parame-Provide a Quantity of Machining Scrap ters including at least one of a pressure, an atmosphere composition, a pour 120-, Compress at Least a Portion of the Machining Scrap    temperature, or a hold time; charging the vacuum induction furnace with into a Unitary Piece    the quantity of metM; and operating the vacuum induction furnace to melt 130-,                                 the quantity of metM in accordance with the set of operating parameters, Provide a Vacuum Induction Furnace 140-,                                 whereby at least some of the contaminant is removed from the quantity of Configure the Vacuum Induction Furnace for a Set of    metM so as to provide an output metM having a concentration of carbon Operating Parameters that is less than or equal to a concentration of carbon in the metal as cast. 150-, Place the Piece of the Machining Scrap into the Vacuum Induction Furnace 160-, Heat the Machining Scrap 170-, Melt the Machining Scrap 180-, Continue Heating to Prescribed Temperature and Hold at Prescribed Temperature for Prescribed Hold Time Nre    190-, Pour the Melted Machining Scrap (Erc.)1 FIG. 1 [Continued on next page]     WO 2019/100042 Al I IllIl RINI II lIllIl 11111 11111 OH MI I II 111 11111 11111 11111 11111 Ifilill111111111 IIII 1111 Published: ¨    with international search report (Art. 21(3)) ¨    before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))