公开(公告)号：US20180021895A1

公开(公告)日：2018-01-25

申请号：US15584794

申请日：2017-05-02

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： Andrew J. Wasson ,  Timothy D. Anderson ,  Douglas P. Fairchild ,  Xin Yue ,  HyunWoo Jin ,  Ning Ma ,  IIWook Han ,  Sangchul Lee ,  Bongkeun Lee ,  Jongsub Lee

IPC: B23K35/30 ,  B23K35/38 ,  C22C38/44 ,  C22C38/58 ,  C22C38/50 ,  C22C38/48 ,  B23K35/02 ,  B23K9/16

CPC classification number: B23K35/3073 ,  B23K9/025 ,  B23K9/09 ,  B23K9/16 ,  B23K9/173 ,  B23K9/23 ,  B23K35/0261 ,  B23K35/383 ,  B23K2103/04 ,  C21D2211/001 ,  C22C38/02 ,  C22C38/22 ,  C22C38/38 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

Abstract: The present disclosure relates to a welding composition for joining high manganese steel base metals and methods of applying the same. The composition includes: carbon in a range of about 0.4 wt % to about 0.8 wt %; manganese in a range of about 18 wt % to about 24 wt %; chromium in an amount of ≦about 6 wt %; molybdenum in an amount of ≦about 4 wt %; nickel in an amount of ≦about 5 wt %; silicon in an amount of about 0.4 wt % to about 1.0 wt %; sulfur in an amount of ≦about 200 ppm; phosphorus in an amount of ≦about 200 ppm; and a balance including iron. In an embodiment, the composition has an austenitic phase.

公开(公告)号：US20200086431A1

公开(公告)日：2020-03-19

申请号：US16670494

申请日：2019-10-31

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： Andrew J. Wasson ,  Timothy D. Anderson ,  Douglas P. Fairchild ,  Xin Yue ,  HyunWoo Jin ,  Ning Ma ,  IlWook Han ,  Sangchul Lee ,  Bongkeun Lee ,  Jongsub Lee

IPC: B23K35/30 ,  C22C38/58 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  B23K35/38 ,  B23K35/02 ,  B23K9/16 ,  C22C38/02 ,  C22C38/38 ,  C22C38/22 ,  B23K9/09 ,  B23K9/173 ,  B23K9/23 ,  B23K9/025

Abstract: Welding compositions for high manganese steel base metals, the composition comprising: carbon in a range of about 0.4 wt % to about 0.8 wt %; manganese in a range of about 18 wt % to about 24 wt %; chromium in an amount of about 6 wt %; molybdenum in an amount of about

公开(公告)号：US11883906B2

公开(公告)日：2024-01-30

申请号：US16672960

申请日：2019-11-04

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： HyunWoo Jin ,  Ning Ma ,  Adnan Ozekcin ,  Andrew J. Wasson ,  Douglas P. Fairchild ,  IIWook Han ,  Sangchul Lee ,  Bongkeun Lee ,  Jongsub Lee

IPC: B23K35/02 ,  B23K35/30 ,  B23K9/18 ,  B23K9/23 ,  C22C38/00 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

CPC classification number: B23K35/3073 ,  B23K9/186 ,  B23K9/23 ,  B23K35/0261 ,  C22C38/002 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

Abstract: A metal cored wire for submerged arc welding, the wire comprising a steel sheath with a core comprising powders of: carbon in a range of about 0.3 wt. % to about 1.2 wt. %; silicon in a range of about 0.1 wt. % to about 3.0 wt. %; manganese in a range of about 9.0 wt. % to about 30 wt. %; chromium in an amount less than about 8 wt. %; nickel in an amount less than about 6 wt. %; molybdenum in an amount less than about 6 wt. %; tungsten in an amount less than about 5 wt. %; copper in an amount less than about 4 wt. %; niobium in an amount less than about 2 wt. %; vanadium in an amount less than about 2 wt. %; titanium in an amount less than about 2 wt. %; nitrogen in an amount less than about 0.4 wt. %; boron in an amount less than about 1 wt. %; at least one of: (i) sulfur in an amount less than about 0.3 wt. %; (ii) phosphorous in an amount less than about 0.03 wt. %; or a combination thereof; and the balance with iron.

公开(公告)号：US11155905B2

公开(公告)日：2021-10-26

申请号：US15977796

申请日：2018-05-11

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： Hyunwoo Jin ,  Ning Ma ,  Raghavan Ayer ,  Russell Robert Mueller ,  Hak-Cheol Lee ,  Jong-Kyo Choi ,  In-Shik Suh

IPC: C22C38/38 ,  C21D8/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/20 ,  C21D6/00 ,  C22C38/04 ,  G01N17/04 ,  C21D9/08 ,  C21D9/44

Abstract: Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced wear resistance, and methods for fabricating high manganese steel compositions having enhanced wear resistance. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: wear resistance, ductility, crack resistance, erosion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and/or environmental cracking resistance. In general, the present disclosure provides high manganese steels tailored to resist wear and/or erosion.

公开(公告)号：US20200086432A1

公开(公告)日：2020-03-19

申请号：US16672960

申请日：2019-11-04

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： HyunWoo Jin ,  Ning Ma ,  Adnan Ozekcin ,  Andrew J. Wasson ,  Douglas P. Fairchild ,  IIWook Han ,  Sangchul Lee ,  Bongkeun Lee ,  Jongsub Lee

IPC: B23K35/30 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/00 ,  B23K35/02 ,  B23K9/23 ,  B23K9/18

Abstract: A metal cored wire for submerged arc welding, the wire comprising a steel sheath with a core comprising powders of: carbon in a range of about 0.3 wt. % to about 1.2 wt. %; silicon in a range of about 0.1 wt. % to about 3.0 wt. %; manganese in a range of about 9.0 wt. % to about 30 wt. %; chromium in an amount less than about 8 wt. %; nickel in an amount less than about 6 wt. %; molybdenum in an amount less than about 6 wt. %; tungsten in an amount less than about 5 wt. %; copper in an amount less than about 4 wt. %; niobium in an amount less than about 2 wt. %; vanadium in an amount less than about 2 wt. %; titanium in an amount less than about 2 wt. %; nitrogen in an amount less than about 0.4 wt. %; boron in an amount less than about 1 wt. %; at least one of: (i) sulfur in an amount less than about 0.3 wt. %; (ii) phosphorous in an amount less than about 0.03 wt. %; or a combination thereof; and the balance with iron.

公开(公告)号：US20180258515A1

公开(公告)日：2018-09-13

申请号：US15977796

申请日：2018-05-11

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： Hyunwoo Jin ,  Ning Ma ,  Raghavan Ayer ,  Russell Robert Mueller ,  Hak-Cheol Lee ,  Jong-Kyo Choi ,  In-Shik Suh

IPC: C22C38/38 ,  G01N17/04 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C21D6/00 ,  C22C38/02 ,  C21D8/00 ,  C21D9/08 ,  C21D9/44

CPC classification number: C22C38/38 ,  C21D6/005 ,  C21D8/005 ,  C21D9/08 ,  C21D9/44 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  G01N17/046

Abstract: Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced wear resistance, and methods for fabricating high manganese steel compositions having enhanced wear resistance. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: wear resistance, ductility, crack resistance, erosion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and/or environmental cracking resistance. In general, the present disclosure provides high manganese steels tailored to resist wear and/or erosion.

公开(公告)号：US20220112432A1

公开(公告)日：2022-04-14

申请号：US17496644

申请日：2021-10-07

Applicant: ExxonMobil Research and Engineering Company

Inventor： Wesley Sattler ,  Keith R. Hajkowski ,  Changmin Chun ,  Partha Nandi ,  Vera Grankina ,  Joseph E. Gatt ,  Ning Ma ,  Anastasios Skoulidas ,  William R. Gunther ,  Everett J. O'Neal

IPC: C10G11/04 ,  C10G11/22 ,  B01J35/04 ,  B01J21/04 ,  B01J23/755 ,  B01J38/12 ,  B01J8/00

Abstract: Systems and methods are provided for using size-reversing materials in vessels where direct heating is used to at least partially provide heat for reforming reactions under cyclic reforming conditions. An example of a size-reversing material is the combination of NiO and Al2O3. It has been discovered that size-reversing materials can undergo a phase transition that can assist with re-dispersion of metal at elevated temperatures. This can assist with maintaining catalytic activity for reforming over longer time periods in the presence of cyclic reforming conditions.

公开(公告)号：US20190278880A1

公开(公告)日：2019-09-12

申请号：US16295004

申请日：2019-03-07

Applicant: ExxonMobil Research and Engineering Company

Inventor： Ning Ma ,  Niranjan A. Subrahmanya ,  Wei D. Liu ,  Sumathy Raman

IPC: G06F17/50 ,  G06N3/08 ,  G06N20/00

Abstract: This disclosure generally relates to a methodology of effectively designing and/or discovering new materials based on microstructure, and more particularly, to designing and/or discovering new materials by combining material fundamentals and experimental data. The methodology disclosed herein provides cost-effective and time-effective solutions for material design that combine the benefits of both of the two major computational material design approaches: physics-based and data-driven computer models.

公开(公告)号：US10974340B2

公开(公告)日：2021-04-13

申请号：US15712241

申请日：2017-09-22

Applicant: ExxonMobil Research and Engineering Company

Inventor： Ning Ma

IPC: B23K9/095 ,  C08F240/00 ,  B23P6/00 ,  B23K26/00 ,  B23K101/10

Abstract: Provided is an oil, gas and/or petrochemical ferrous or non-ferrous material component including two or more segments of ferrous or non-ferrous components for joining, wherein the two or more segments are of the same or different materials, and laser metal deposition weldments bonding adjacent segments of said components together. Also provided are methods of making laser metal deposition weldments and their uses in the oil, gas and petrochemical industry.

公开(公告)号：US20200232592A1

公开(公告)日：2020-07-23

申请号：US16739755

申请日：2020-01-10

Applicant: ExxonMobil Research and Engineering Company

Inventor： Ning Ma ,  Jevan Furmanski ,  Neeraj S. Thirumalai ,  Jeffrey M. Grenda

IPC: F16L58/08 ,  B29C64/268 ,  B29C64/153 ,  B23K26/20 ,  B23K26/70

Abstract: A method for repairing defects on a structure is disclosed herein. The method comprises use of an additive manufacturing head to inject a flowable filler material into the defect. In certain embodiments, the additive manufacturing head can be a laser metal deposition (LMD) head comprising a powder nozzle and a laser. The structure can be, e.g., a pipeline or a pressure vessel used in petroleum, petrochemical, or natural gas applications.