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"Impact Treatment Method, Impact Treatment Device And A Welded Structure"
Abstract: An impact treatment method for improving fatigue characteristics of a welded joint comprising pressing an impact pin against the surface of a base metal material near a toe of a weld bead and making it move relatively to the weld line direction to apply hammer peening treatment or ultrasonic impact treatment, characterized by using as the impact pin an impact pin having a tip curvature radius of 1/2 or less of a thickness of the metal material and between 2 to 10 mm and, on a surface of a base metal material up to a range where a distance from the toe of the weld bead to the center of the impact treatment position is within 2.5 times the tip curvature radius of the impact pin and where the impact pin does not contact the weld metal during impact treatment, applying hammer peening or ultrasonic impact treatment so as to cause by the impact pin residual plastic deformation where an impact dent has a groove depth of 0.1 to 2 mm, the tip curvature radius of the impact pin or less, and l/10th or less of the thickness of the metal material and where the impact dent has a width of 1.5 to 15 mm and five times or more the groove depth.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. HIROSHI SHIMANUKI
2. TETSURO NOSE
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 118-delnp-2011-Form-3-(01-07-2011).pdf | 2011-07-01 |
| 2 | 118-delnp-2011-Correspondence Others-(01-07-2011).pdf | 2011-07-01 |
| 3 | 118-delnp-2011-Form-3-(10-08-2011).pdf | 2011-08-10 |
| 4 | 118-delnp-2011-Correspondence Others-(10-08-2011).pdf | 2011-08-10 |
| 5 | 118-delnp-2011-gpa.pdf | 2011-08-21 |
| 6 | 118-delnp-2011-form-5.pdf | 2011-08-21 |
| 7 | 118-delnp-2011-form-3.pdf | 2011-08-21 |
| 8 | 118-delnp-2011-form-2.pdf | 2011-08-21 |
| 9 | 118-delnp-2011-form-18.pdf | 2011-08-21 |
| 10 | 118-delnp-2011-form-1.pdf | 2011-08-21 |
| 11 | 118-delnp-2011-drawings.pdf | 2011-08-21 |
| 12 | 118-delnp-2011-description (complete).pdf | 2011-08-21 |
| 13 | 118-delnp-2011-coresspondence-others.pdf | 2011-08-21 |
| 14 | 118-delnp-2011-claims.pdf | 2011-08-21 |
| 15 | 118-delnp-2011-abstract.pdf | 2011-08-21 |
| 16 | 118-delnp-2011-Form-3-(10-12-2012).pdf | 2012-12-10 |
| 17 | 118-delnp-2011-Correspondence Others-(10-12-2012).pdf | 2012-12-10 |
| 18 | 118-delnp-2011-Form-3-(18-06-2013).pdf | 2013-06-18 |
| 19 | 118-delnp-2011-Correspondence-Others-(18-06-2013).pdf | 2013-06-18 |
| 20 | 118-delnp-2011-Merger Documents-(09-07-2013).pdf | 2013-07-09 |
| 21 | 118-delnp-2011-GPA-(09-07-2013).pdf | 2013-07-09 |
| 22 | 118-delnp-2011-Form-6-(09-07-2013).pdf | 2013-07-09 |
| 23 | 118-delnp-2011-Form-2-(09-07-2013).pdf | 2013-07-09 |
| 24 | 118-delnp-2011-Form-1-(09-07-2013).pdf | 2013-07-09 |
| 25 | 118-delnp-2011-Correspondence Others-(09-07-2013).pdf | 2013-07-09 |
| 26 | 118-delnp-2011-Form-3-(29-11-2013).pdf | 2013-11-29 |
| 27 | 118-delnp-2011-Correspondence Others-(29-11-2013).pdf | 2013-11-29 |
| 28 | 118-DELNP-2011-Form 3-031114.pdf | 2014-11-26 |
| 29 | 118-DELNP-2011-Correspondence-031114.pdf | 2014-11-26 |
| 30 | 118-delnp-2011-Form-3-(04-02-2016).pdf | 2016-02-04 |
| 31 | 118-delnp-2011-Correspondence Others-(04-02-2016).pdf | 2016-02-04 |
| 32 | 118-DELNP-2011-FER.pdf | 2016-09-06 |
| 33 | Petition Under Rule 137 [14-02-2017(online)].pdf | 2017-02-14 |
| 34 | Form 3 [16-02-2017(online)].pdf | 2017-02-16 |
| 35 | Examination Report Reply Recieved [16-02-2017(online)].pdf | 2017-02-16 |
| 36 | Drawing [16-02-2017(online)].pdf | 2017-02-16 |
| 37 | Description(Complete) [16-02-2017(online)].pdf_287.pdf | 2017-02-16 |
| 38 | Description(Complete) [16-02-2017(online)].pdf | 2017-02-16 |
| 39 | Correspondence [16-02-2017(online)].pdf | 2017-02-16 |
| 40 | Claims [16-02-2017(online)].pdf | 2017-02-16 |
| 41 | Abstract [16-02-2017(online)].pdf | 2017-02-16 |
| 42 | 118-DELNP-2011-OTHERS-070317.pdf | 2017-03-08 |
| 43 | 118-DELNP-2011-Correspondence-070317.pdf | 2017-03-08 |
| 44 | 118-DELNP-2011-FORM 3 [18-07-2017(online)].pdf | 2017-07-18 |
| 45 | 118-DELNP-2011-HearingNoticeLetter.pdf | 2017-09-11 |
| 46 | 118-DELNP-2011-Correspondence to notify the Controller (Mandatory) [10-10-2017(online)].pdf | 2017-10-10 |
| 47 | 118-DELNP-2011-Written submissions and relevant documents (MANDATORY) [24-10-2017(online)].pdf | 2017-10-24 |
| 48 | 118-DELNP-2011-Annexure (Optional) [24-10-2017(online)].pdf | 2017-10-24 |
| 49 | 118-DELNP-2011-PatentCertificate04-12-2017.pdf | 2017-12-04 |
| 50 | 118-DELNP-2011-IntimationOfGrant04-12-2017.pdf | 2017-12-04 |
| 51 | 118-DELNP-2011-RELEVANT DOCUMENTS [17-02-2018(online)].pdf | 2018-02-17 |
| 52 | 118-DELNP-2011-RELEVANT DOCUMENTS [22-02-2019(online)].pdf | 2019-02-22 |
| 53 | 118-DELNP-2011-PROOF OF ALTERATION [11-07-2019(online)].pdf | 2019-07-11 |
| 54 | 290233-Power of Attorney-120719.pdf | 2019-07-20 |
| 55 | 290233-OTHERS-120719.pdf | 2019-07-20 |
| 56 | 290233-Correspondence-120719.pdf | 2019-07-20 |
| 57 | 118-DELNP-2011-RELEVANT DOCUMENTS [20-02-2020(online)].pdf | 2020-02-20 |
| 58 | 118-DELNP-2011-RELEVANT DOCUMENTS [26-07-2021(online)].pdf | 2021-07-26 |
| 59 | 118-DELNP-2011-RELEVANT DOCUMENTS [24-09-2022(online)].pdf | 2022-09-24 |