MY201905A - Mobile flash-butt welding method for 60kg/m r260 hot-rolled rail - Google Patents

Mobile flash-butt welding method for 60kg/m r260 hot-rolled rail

Info

Publication number
MY201905A
MY201905A MYPI2019004215A MYPI2019004215A MY201905A MY 201905 A MY201905 A MY 201905A MY PI2019004215 A MYPI2019004215 A MY PI2019004215A MY PI2019004215 A MYPI2019004215 A MY PI2019004215A MY 201905 A MY201905 A MY 201905A
Authority
MY
Malaysia
Prior art keywords
welding
stage
hot
flash
rail
Prior art date
Application number
MYPI2019004215A
Inventor
Xin Lu
Dadong Li
Ruoyu Wang
Jian Deng
Original Assignee
Pangang Group Panzhihua Iron & Steel Res Institute Co Ltd
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 Pangang Group Panzhihua Iron & Steel Res Institute Co Ltd filed Critical Pangang Group Panzhihua Iron & Steel Res Institute Co Ltd
Publication of MY201905A publication Critical patent/MY201905A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/04—Flash butt welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

The invention discloses a mobile flash-butt welding method for 60kg/m R260 hot-rolled rail, comprising a pre-flash stage, a flash stage, an boost stage, an upset stage and a forge stage; the total welding heat input is 3.0-4.8MJ, the total welding duration is 110-135s, and the welding upset allowance is 12.4-16.7 mm. The invention can improve the rail welding quality by controlling the total welding heat input, the total welding duration and the upset allowance in the mobile flash-butt welding process, as well as controlling the welding heat input and duration of each stage. According to the invention, the 60kg/m R260 hot-rolled rail can be successfully subjected to mobile flash-butt welding. As a result, the total width of the heat affected zone of the mobile flash-butt welding joint of whole 60kg/m R260 hot- rolled rail can be controlled within 32mm, and the difference between the maximum and the minimum value thereof is not more than 8.2mm, so as to reduce internal defects of the rail joint and ensure stable welding quality. ( Fig. 1 )
MYPI2019004215A 2018-07-26 2019-07-23 Mobile flash-butt welding method for 60kg/m r260 hot-rolled rail MY201905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810834827.0A CN108890106B (en) 2018-07-26 2018-07-26 Method of mobile flash welding of 60kg/m R260 hot-rolled rail

Publications (1)

Publication Number Publication Date
MY201905A true MY201905A (en) 2024-03-22

Family

ID=64351882

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2019004215A MY201905A (en) 2018-07-26 2019-07-23 Mobile flash-butt welding method for 60kg/m r260 hot-rolled rail

Country Status (3)

Country Link
CN (1) CN108890106B (en)
AU (1) AU2019208227B2 (en)
MY (1) MY201905A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110512148B (en) * 2019-07-31 2021-02-02 攀钢集团攀枝花钢铁研究院有限公司 A Method for Controlling Martensite Structure of R260 Rail Flash Welded Joints
CN110760761B (en) * 2019-07-31 2020-10-09 攀钢集团攀枝花钢铁研究院有限公司 A Method for Controlling Martensite Structure of R260 Rail Flash Welded Joints
CN110512149B (en) * 2019-07-31 2021-01-26 攀钢集团攀枝花钢铁研究院有限公司 A Method for Controlling Martensite Structure of R260 Rail Flash Welded Joints
CN110512139B (en) * 2019-07-31 2021-02-02 攀钢集团攀枝花钢铁研究院有限公司 A Method for Controlling Martensite Structure of R260 Rail Flash Welded Joints
CN110480144B (en) * 2019-08-26 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Technology of Controlling the Microstructure of Flash Welded Joints of R350HT Rail with Medium Limit Mn Content
CN110480142B (en) * 2019-08-26 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Technology of Controlling the Microstructure of Flash Welded Joints of R350HT Rail with Middle Upper Mn Content
CN110480138B (en) * 2019-08-26 2022-08-09 攀钢集团攀枝花钢铁研究院有限公司 Process for controlling upper limit Mn content R350HT steel rail flash welding joint structure
CN110480139B (en) * 2019-08-26 2022-08-05 攀钢集团攀枝花钢铁研究院有限公司 Technology of Controlling the Microstructure of Flash Welded Joints of R350HT Rail with Lower Limit of Mn Content
CN110480143B (en) * 2019-08-26 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Process for controlling microstructure of flash welded joint of R350HT rail with lower limit Mn content
CN110480140B (en) * 2019-08-26 2021-07-13 攀钢集团攀枝花钢铁研究院有限公司 Technology of Controlling the Microstructure of Flash Welded Joints of R350HT Rail with Upper Limit of Mn Content
CN113305407A (en) * 2021-06-15 2021-08-27 中国铁道科学研究院集团有限公司金属及化学研究所 Flash welding process of 75kg/m 1380MPa bainite steel rail
CN113427109B (en) * 2021-08-09 2022-11-29 攀钢集团攀枝花钢铁研究院有限公司 A welding method for copper-containing corrosion-resistant steel rail
CN115870595B (en) * 2022-11-03 2024-11-26 攀钢集团攀枝花钢铁研究院有限公司 A method for reducing the width of the softening zone of high-strength pearlite rail joints
CN115488482B (en) * 2022-11-03 2023-12-22 攀钢集团攀枝花钢铁研究院有限公司 Method for reducing width of heat affected zone of high-strength pearlitic steel rail flash welding head
CN115488483B (en) * 2022-11-03 2024-04-09 攀钢集团攀枝花钢铁研究院有限公司 A method for improving the bonding strength of rail flash butt welding joints
CN115722779B (en) * 2022-11-03 2025-03-14 攀钢集团攀枝花钢铁研究院有限公司 Method for reducing the width of heat-affected zone of hypereutectoid rail flash welding joint
CN115673505B (en) * 2022-11-24 2024-11-26 攀钢集团攀枝花钢铁研究院有限公司 Methods for improving the quality of flash welding joints of medium carbon low alloy rails
CN117139802A (en) * 2023-09-07 2023-12-01 攀钢集团攀枝花钢铁研究院有限公司 Methods to extend the service life of rail flash welding rail heads and rails
CN117161529A (en) * 2023-09-07 2023-12-05 攀钢集团攀枝花钢铁研究院有限公司 Method for increasing the hardened thickness of rail flash welding joint and rail head
CN117161528A (en) * 2023-09-07 2023-12-05 攀钢集团攀枝花钢铁研究院有限公司 Method for improving internal hardness of rail flash welding head and rail
CN117161527A (en) * 2023-09-07 2023-12-05 攀钢集团攀枝花钢铁研究院有限公司 Welding and heat treatment methods for deep hardened layer rails and rails

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JPS63215383A (en) * 1987-03-04 1988-09-07 Nippon Steel Corp Flash welding method
KR20040056191A (en) * 2002-12-23 2004-06-30 재단법인 포항산업과학연구원 Monitoring method for flash butt welding property
IN2012DN03791A (en) * 2009-10-30 2015-08-28 Nippon Steel & Sumitomo Metal Corp
CN106334863B (en) * 2016-10-19 2018-09-04 成都先进金属材料产业技术研究院有限公司 A kind of method and rail carrying out mobile Flash Butt Welding to 75kg/m hypereutectoid rail and pearlite steel rail
CN107214406B (en) * 2017-07-28 2019-06-04 攀钢集团研究院有限公司 Process method for controlling "white lump" structure in flash welded joint of bainitic rail
CN107552936B (en) * 2017-09-07 2019-09-17 攀钢集团研究院有限公司 60kg/m U75V+U75VG rail moves Flash Butt Welding technique

Also Published As

Publication number Publication date
AU2019208227A1 (en) 2020-02-13
AU2019208227B2 (en) 2021-02-11
CN108890106B (en) 2020-10-30
CN108890106A (en) 2018-11-27

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