EP3767002A1 - Piercer plug - Google Patents

Piercer plug Download PDF

Info

Publication number
EP3767002A1
EP3767002A1 EP19767149.8A EP19767149A EP3767002A1 EP 3767002 A1 EP3767002 A1 EP 3767002A1 EP 19767149 A EP19767149 A EP 19767149A EP 3767002 A1 EP3767002 A1 EP 3767002A1
Authority
EP
European Patent Office
Prior art keywords
sprayed coating
plug
concentration
oxides
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19767149.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3767002A4 (en
Inventor
Yasuyoshi Hidaka
Yasuto Higashida
Naoya SHIRASAWA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP3767002A4 publication Critical patent/EP3767002A4/en
Publication of EP3767002A1 publication Critical patent/EP3767002A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Definitions

  • the present invention relates to a piercer plug.
  • a piercer plug for piercing and rolling to produce a seamless steel pipe is provided with a scale coating on its surface before use to ensure the thermal insulation, lubrication and seizure resistance of the surface.
  • a scale coating gradually wears down during each round of piercing/rolling.
  • base material i.e., plug body
  • the base material may be eroded and/or seize upon the material to be processed.
  • a scale coating significantly wears down during piercing of a material that is difficult to process, such as stainless steel; the coating may wear out just after several passes. Each time this occurs, heat treatment is necessary to form a scale coating once again, which requires several hours to several dozens of hours, meaning poor efficiency.
  • WO 2009/057471 proposes forming a sprayed coating made from iron and oxides on the surface of the base material of the piercer plug.
  • WO 2014/034376 discloses a piercer plug including a sprayed coating containing iron and iron oxides and, in addition, in mass %, 0.015 to 0.6 % C, 0.05 to 0.5 % Si, 0.1 to 1.0 % Mn, and 0 to 0.3 % Cu.
  • Sprayed coatings have better adhesion with respect to base material and better wear resistance than scale coatings, and can be formed in several minutes to several dozens of minutes. As such, sprayed coatings have longer lives than scale coatings, and, even when a sprayed coating has worn out, it can be restored in a short period of time. Meanwhile, it is desirable to further increase the life of piercer plugs to increase the manufacture efficiency of seamless steel pipes. It is thus desirable to further increase the wear resistance of coatings.
  • An object of the present invention is to provide a piercer plug with further increased wear resistance.
  • Apiercer plug includes: a plug body; and a sprayed coating formed on a surface of the plug body.
  • the sprayed coating contains an iron-based alloy and an oxide of the iron-based alloy.
  • a chromium concentration determined by analyzing the sprayed coating with X-ray fluorescence analysis is 3 to 20 mass %.
  • the present invention provides a piercer plug with further increased wear resistance.
  • FIG. 1 is a longitudinal cross-sectional view of a piercer plug 10 according to an embodiment of the present invention.
  • the piercer plug 10 includes a plug body 11 and a sprayed coating 12.
  • the plug body 11 is projectile-shaped. Specifically, the plug body 11 has a circular transverse section and is shaped such that its outer diameter increases as it goes from the tip of the plug body 11 toward the rear body's end.
  • the plug body 11 is formed from an iron-based alloy, for example.
  • the sprayed coating 12 is provided on the surface of the plug body 11.
  • the sprayed coating 12 covers the entire surface of the plug body 11 except for the rear end face of the plug body 11.
  • the thickness of the sprayed coating 12 may not be constant.
  • the sprayed coating 12 is preferably formed such that its portions overlying the tip 11a of the plug body 11 are thicker than those overlying the body's trunk portion 11b.
  • the sprayed coating 12 contains at least an iron-based alloy and oxides thereof.
  • the sprayed coating 12 may contain other compounds.
  • the iron-based alloy in the sprayed coating 12 is mainly composed of iron (Fe), and also contains carbon (C), silicon (Si), manganese (Mn) and chromium (Cr), for example.
  • the iron-based alloy in the sprayed coating 12 may contain only one or some of C, Si, Mn and Cr, and may contain elements other than C, Si, Mn and Cr.
  • the chemical composition of the iron-based alloy in the sprayed coating 12 may not be uniform. For example, when viewed microscopically, portions containing almost no Cr and portions with high Cr contents may be present in a mixed manner.
  • the oxides in the sprayed coating 12 are the oxides resulting from the iron-based alloy being oxidized.
  • the oxides in the sprayed coating 12 are iron oxides and complex oxides of iron and chromium, for example.
  • the iron oxides may be FeO or Fe 3 O 4 , for example.
  • the complex oxides of iron and chromium may be (Fe,Cr) 3 O 4 , for example.
  • the oxides in the sprayed coating 12 may contain oxides of other metals.
  • the proportion of metal i.e., iron-based alloy
  • the proportion of oxides in the sprayed coating 12 is preferably 25 to 80 vol%, and more preferably 35 to 65 vol%.
  • portions of the coating near the plug body 11 have high proportions of metal and portions located toward the surface have higher proportions of oxides. Such a construction will further increase the adhesion with respect to the plug body 11.
  • the volume ratio of oxides can be determined by observing a cross section of the sprayed coating 12 and doing calculations.
  • the chromium concentration determined by analyzing the sprayed coating 12 with X-ray fluorescence analysis (hereinafter referred to as "XRF-Cr concentration") is 3 to 20 mass %.
  • An XRF-Cr concentration of 3 mass % or higher provides a better wear resistance than a concentration below 3 mass %. This is presumably because the complex oxides of iron and chromium increase the hardness of the sprayed coating 12. On the other hand, an XRF-Cr concentration exceeding 20 mass % results in insufficient lubrication of the sprayed coating 12, which reduces piercing efficiency.
  • the lower limit for XRF-Cr concentration is preferably 5 mass %, and more preferably 8 mass %.
  • the upper limit for XRF-Cr concentration is preferably 18 mass %, and more preferably 16 mass %.
  • XRF-Cr concentration can be measured in the following manner: an X-ray is directed into the sprayed coating 12 through its surface, and the resulting X-ray fluorescence is detected with a detector.
  • the incident X-ray is generated by a 3 mm ⁇ spot collimator with a target of Rh and an output of 40 kV ⁇ 100 pA.
  • the detector is a Si drift detector.
  • the concentration of Cr is determined as a mass percentage, where the denominator is the total amount of all the elements detected.
  • the numerator for XRF-Cr concentration includes both the Cr amount in the iron-based alloy and the Cr amount in the oxides.
  • the iron concentration determined by analyzing the sprayed coating 12 with X-ray fluorescence analysis is 50 mass % or higher.
  • the determination of iron concentration by analyzing the coating with X-ray fluorescence analysis involves the same measurement method as for XRF-Cr concentration.
  • the plug body 11 is prepared.
  • the plug body 11 may be any plug body known to a person skilled in the art.
  • a sprayed coating 12 is formed on the plug body 11.
  • the sprayed coating 12 may be formed using an arc sprayer 20, shown in FIG. 2 .
  • the arc sprayer 20 includes a spraying gun 21 and a rotating base 24.
  • the spraying gun 21 generates an arc at the tips of a positive-electrode wire 22 and a negative-electrode wire 23 to melt metal, which is then ejected by means of compressed air.
  • the chemical composition of, and the XRF-Cr concentration in, the sprayed coating 12 may be regulated by adjusting the chemical compositions of the positive- and negative-electrode wires 22 and 23.
  • the positive- and negative electrode wires 22 and 23 may have the same chemical composition or may have different chemical compositions. If wires of different chemical compositions are used, metal from the positive-electrode wire 22 and metal from the negative-electrode wire 23 mix together to form a pseudo-alloy.
  • the positive- and negative-electrode wires 22 and 23 may be made of carbon steel or stainless steel, for example.
  • the positive- and negative-electrode wires 22 and 23 may be made of cored wire 30, shown in FIG. 3 .
  • the cored wire 30 includes an outer sheath 31 made from carbon steel and a filler 32 filling the outer sheath 31.
  • the chemical composition of the metal ejected from the spraying gun 21 may be changed at will by changing the type of the filler 32.
  • spraying distance The longer the distance between the tip of the spraying gun 21 and the surface of the plug body 11 (hereinafter referred to as "spraying distance"), the higher the proportion of oxides in the sprayed coating 12. This is because the oxidation of metal ejected from the tip of the spraying gun 21 progresses along the spraying distance.
  • the spraying distance may be 100 to 1400 mm, for example. Further, spraying at gradually increasing spraying distances results in higher proportions of metal in portions near the plug body 11 and higher proportions of oxides in portions located toward the surface.
  • the numerator for XRF-Cr concentration includes both the Cr amount in the iron-based alloy and the Cr amount in the oxides. As such, the XRF-Cr concentration does not significantly change even if the proportion of oxides in the sprayed coating 12 changes. Thus, the XRF-Cr concentration does not significantly change even when the spraying distance is changed.
  • Spraying is performed while the rotating base 24 rotates the plug body 11 about its axis until the thickness of the sprayed coating 12 reaches a predetermined level.
  • the thickness of the sprayed coating 12 may be 200 to 3000 ⁇ m, for example.
  • the formation of the sprayed coating 12 is followed by heat treatment for diffusion purposes.
  • the plug is preferably held at 600 to 1250 °C for 10 minutes or longer, for example.
  • the heat-treatment temperature is more preferably 600 to 1100 °C.
  • the piercer plug 10 according to an embodiment of the present invention has been described.
  • the XRF-Cr concentration in the sprayed coating 12 is 3 to 20 mass %. This will increase the wear resistance of the piercer plug 10.
  • the plug body 11 is projectile-shaped.
  • the plug body 11 may have any shape.
  • the piercer plug may be a plug body 13 with a protruding tip, as shown in FIG. 4 , with a sprayed coating 12 formed thereon, or may be a plug body 14 of a divided construction, as shown in FIG. 5 , with a sprayed coating 12 formed thereon.
  • the above-described embodiments illustrate implementations where the sprayed coating 12 is formed by arc spraying.
  • a method for forming the sprayed coating 12 is not limited thereto.
  • the sprayed coating 12 may be formed by, for example, plasma spraying, flame spraying, highspeed flame spraying, etc.
  • a model plug mainly composed of 0.15 C, 0.5 Si, 1.0 Ni, 0.5 Mn, 1.5 Mo, 3.0 W, and balance Fe was prepared and a sprayed coating was formed thereon.
  • a positive-electrode wire and a negative-electrode wire were prepared by combining wires of a low-carbon steel, SUS 410 and SUS 430, and cored wires with different Cr concentrations to adjust the compound of the sprayed coating to be formed.
  • the XRF-Cr concentration in the sprayed coating was analyzed by the method described in connection with the embodiment.
  • the X-ray fluorescence analyzer used was DP-2000 Delta Premium from JEOL Ltd., and the analysis was performed using ALLOY PLUS alloy analysis software from JEOL Ltd.
  • the Vickers hardness of the sprayed coating of each plug was measured.
  • the Vickers hardness of each plug was obtained by conducting three-point measurement and determining the average of the measurements.
  • Table 1 shows the relationship between XRF-Cr concentration and average hardness.
  • "-" in the column for XRF-Cr concentration indicates that the XRF-Cr concentration was below the lower limit for analysis.
  • [Table 1] TABLE 1 Mark XRF-Cr concentration (mass %) Vickers hardness (Hv) A - 320 B 1.04 345 C 3.03 380 D 7.85 400 E 11.52 450 F 15.53 500 G 18.11 520 H 22.30 550
  • FIG. 6 shows a cross-sectional microphotograph of the sprayed coating labeled Mark A in Table 1.
  • FIG. 7 shows a cross-sectional microphotograph of the sprayed coating labeled Mark C in Table 1.
  • a sprayed coating containing Cr was composed of metal and oxides, similar to the sprayed coating containing no Cr ( FIG. 6 ).
  • relatively bright portions represent portions made from metal
  • dark-gray portions represent portions made from oxides.
  • the ratio between metal and oxides was substantially the same for each of the sprayed coatings prepared for the present application, where the proportion of oxides was about 44 to 55 vol%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
EP19767149.8A 2018-03-14 2019-01-18 Piercer plug Pending EP3767002A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018047307 2018-03-14
PCT/JP2019/001486 WO2019176279A1 (ja) 2018-03-14 2019-01-18 ピアサープラグ

Publications (2)

Publication Number Publication Date
EP3767002A4 EP3767002A4 (en) 2021-01-20
EP3767002A1 true EP3767002A1 (en) 2021-01-20

Family

ID=67907651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19767149.8A Pending EP3767002A1 (en) 2018-03-14 2019-01-18 Piercer plug

Country Status (7)

Country Link
US (1) US20210101194A1 (pt)
EP (1) EP3767002A1 (pt)
JP (1) JP6954447B2 (pt)
CN (1) CN111836911A (pt)
BR (1) BR112020014527A2 (pt)
MX (1) MX2020007617A (pt)
WO (1) WO2019176279A1 (pt)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913924B2 (ja) * 1979-12-25 1984-04-02 日本鋼管株式会社 穿孔圧延機用芯金
JPH01154808A (ja) * 1987-12-11 1989-06-16 Nippon Steel Corp 鋼管圧延用工具
JPH03204106A (ja) * 1989-12-28 1991-09-05 Sumitomo Metal Ind Ltd 熱間継目無管製造用プラグ
JP4346780B2 (ja) * 2000-03-06 2009-10-21 新日鉄マテリアルズ株式会社 耐熱耐摩耗複合構造部材およびその製造方法
MX2010004438A (es) 2007-11-01 2010-05-05 Sumitomo Metal Ind Punzon de perforacion y laminacion para uso reciclado en un tren de perforacion y laminacion a ser empleado en la perforacion y laminacion de tubos de acero sin costura, procedimiento y linea de equipos para regenerar dicho punzon.
UA97027C2 (uk) * 2007-11-01 2011-12-26 Сумитомо Мэтал Индастриз, Лтд. Прошивна і прокатна оправка, спосіб відновлення цієї прошивної і прокатної оправки і технологічна лінія для відновлення цієї прошивної і прокатної оправки
JP5440741B1 (ja) * 2012-04-11 2014-03-12 新日鐵住金株式会社 穿孔機に用いられるプラグ及びプラグの再生方法
JP5365723B2 (ja) * 2012-04-24 2013-12-11 新日鐵住金株式会社 穿孔圧延用プラグの製造方法
JP6136625B2 (ja) * 2012-06-25 2017-05-31 新日鐵住金株式会社 熱間加工用潤滑剤および潤滑被膜ならびに熱間加工方法
CA2875456C (en) * 2012-07-20 2016-11-29 Nippon Steel & Sumitomo Metal Corporation Piercing plug
BR112014028246B1 (pt) 2012-08-28 2020-12-08 Nippon Steel Corporation ponta de mandril perfurante e método de produção de ponta de mandril perfurante
JP6540441B2 (ja) * 2015-10-06 2019-07-10 日本製鉄株式会社 プラグの製造方法

Also Published As

Publication number Publication date
WO2019176279A1 (ja) 2019-09-19
MX2020007617A (es) 2020-09-14
CN111836911A (zh) 2020-10-27
EP3767002A4 (en) 2021-01-20
BR112020014527A2 (pt) 2020-12-08
US20210101194A1 (en) 2021-04-08
JP6954447B2 (ja) 2021-10-27
JPWO2019176279A1 (ja) 2021-01-07

Similar Documents

Publication Publication Date Title
JP6010569B2 (ja) スパークプラグ
ES2189447T3 (es) Punta de electrodo de bujia resistente al desgaste, que contiene aleaciones de platino, bujia que contiene la punta resistente al desgaste, y metodo para fabricar la misma.
EP2875876B1 (en) Piercing plug
DE102012016697B3 (de) Messsonde zur Probennahme in Metallschmelzen
EP3767002A1 (en) Piercer plug
CN106463913A (zh) 火花塞用的电极端头以及火花塞
US5021629A (en) Electric plasma arc powder welded slide layer for rotary fluid pump vane
JP2010150649A (ja) 摺動部材用銅合金
JP5257756B2 (ja) 鉄系溶射被膜、その形成方法及び摺動部材
JP7176344B2 (ja) ピアサ－プラグ及びその製造方法
US20030164360A1 (en) Non-copper-plated solid wire for carbon dioxide gas shielded arc welding
EP2845656B1 (en) Method for producing piercing plug
JP2010275581A (ja) 鉄系溶射被膜
JP2009007602A (ja) 防錆処理方法及び転動装置
CN106312367A (zh) 一种用于焊接x80管线钢的气保护药芯焊丝
EP2896716A1 (en) Piercing plug and method for manufacturing piercing plug
JP2022146562A (ja) ピアサープラグ
EP2857545A1 (en) Manufacturing method for piercing plug
RU2218256C2 (ru) Порошковая проволока для наплавки
JP2021172859A (ja) 溶射材及び穿孔プラグの製造方法
CN113146094B (zh) 一种高硬度无裂纹含硼的耐磨堆焊药芯焊丝
EP1666191A1 (en) Copper-free wires for gas-shielded arc welding
WO2015068326A1 (ja) スパークプラグ
US20030152716A1 (en) Coating method
JP6280899B2 (ja) スパークプラグ

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200824

A4 Supplementary search report drawn up and despatched

Effective date: 20201214

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230411

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/08 20060101ALI20240502BHEP

Ipc: C22C 38/04 20060101ALI20240502BHEP

Ipc: C22C 38/02 20060101ALI20240502BHEP

Ipc: C23C 30/00 20060101ALI20240502BHEP

Ipc: C23C 4/131 20160101ALI20240502BHEP

Ipc: C23C 4/129 20160101ALI20240502BHEP

Ipc: C23C 4/123 20160101ALI20240502BHEP

Ipc: B21B 19/04 20060101ALI20240502BHEP

Ipc: C22C 38/12 20060101ALI20240502BHEP

Ipc: C22C 38/00 20060101ALI20240502BHEP

Ipc: G01N 23/223 20060101ALI20240502BHEP

Ipc: C23C 4/11 20160101ALI20240502BHEP

Ipc: B21B 25/00 20060101ALI20240502BHEP

Ipc: C23C 4/06 20160101AFI20240502BHEP