Patent SG-11201806779Y-A (SG)
Title: Thermal treatment for preconditioning or restoration of a solder joint
Inventor: SNUGOVSKY POLINA
IPC: B23K1/20
Filed: 2017-02-10
Abstract: Assemblycleaning as necessary W O 17 / 13695 1 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 17 August 2017 (17.08.2017) WIPO I PCT (10) International Publication Number WO 2017/136951 Al (51) International Patent Classification: B23K 1/00 (2006.01) B23K 1/20 (2006.01) (21) International Application Number: PCT/CA2017/050164 (22) International Filing Date: 10 February 2017 (10.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/294,065 11 February 2016 (11.02.2016) US (71) Applicants: CELESTICA INTERNATIONAL INC. [CA/CA]; 844 Don Mills Road, Toronto, Ontario M3C 1V7 (CA). DY 4 SYSTEMS INC. [CA/CA]; 333 Palladi- um Drive, Kanata, Ontario K2V 1A6 (CA). THE GOV- ERNING COUNCIL OF THE UNIVERSITY OF TORONTO [CA/CA]; University of Toronto - 27 King's College Circle, Toronto, Ontario M5S 1A1 (CA). BAE SYSTEMS CONTROLS INC. [US/US]; 1098 Clark Street, Endicott, New York 13760 (US). HONEYWELL AEROSPACE [US/US]; 1944 E Sky Harbour Circle, Phoenix, Arizona 85034 (US). (72) Inventors: SNUGOVSKY, Polina; 844 Don Mills Road, Toronto, Ontario M3C 1V7 (CA). KOSIBA, Eva; 844 Don Mills Road, Toronto, Ontario M3C 1V7 (CA). KENNEDY, Jeffrey K.; 2800 Hilldale Ave. NE, Min- neapolis, Minnesota 55418 (US). HILLMAN, David; 400 Collins Rd. NE, Cedar Rapids, Iowa 52498 (US). ADAMS, David; 400 Collins Rd. NE, Cedar Rapids, Iowa 52498 (US). MESCHTER, Stephan; 1098 Clark Street, Endicott, New York 13760 (US). PEROVIC, Doug D.; 184 College Street, Toronto, Ontario M5S 3E4 (CA). ROBINSON, Michael 0.; 1944 E. Sky Harbor Circle, Phoenix, Arizona 85034 (US). JUAREZ, Joseph; 1944 E. Sky Harbor Circle, Phoenix, Arizona 85034 (US). STRAZNICKY, Ivan; 333 Palladium Drive, Kanata, Ontario K2V 1A6 (CA). SNUGOVSKY, Leonid; 184 College Street, Toronto, Ontario M5S 3E4 (CA). RO- MANSKY, Marianne; 844 Don Mills Road, Toronto, Ontario M3C 1V7 (CA). (74) Agents: SLANEY, Brett J. et al.; Blake, Cassels & Gray- don LLP, Commerce Court West, 199 Bay Street, Suite 4000, Toronto, Ontario M5L 1A9 (CA). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). [Continued on next page] (54) Title: THERMAL TREATMENT FOR PRECONDITIONING OR RESTORATION OF A SOLDER JOINT Pre-conditioning Process 10 12 14 16 Placement of Solder paste deposition surface mount components Reflow soldering Thermal treatment Soldering pin through hole components by wave soldering / 18 20 (57) : A thermal treatment method for conditioning or restoring bismuth containing lead-free solder in a solder joint as - sembly. The method comprising heating the solder in the assembly to a temperature near the solvus. 11111111111111 0 111011111111111 010 11111 III 0111 0111 11111 IR H 01111111111111 0111111 —› FIG. 1 WO 2017/136951 Al MIDEDIM000101011101010M011110i1OHMEM01111111011110111111 Published: — with international search report (Art. 21(3))