JPS56127731A - Quenching method of steel pipe - Google Patents

Quenching method of steel pipe

Info

Publication number
JPS56127731A
JPS56127731A JP3176380A JP3176380A JPS56127731A JP S56127731 A JPS56127731 A JP S56127731A JP 3176380 A JP3176380 A JP 3176380A JP 3176380 A JP3176380 A JP 3176380A JP S56127731 A JPS56127731 A JP S56127731A
Authority
JP
Japan
Prior art keywords
steel pipe
cooling
quenching
cooling water
pressure
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.)
Granted
Application number
JP3176380A
Other languages
Japanese (ja)
Other versions
JPS5835574B2 (en
Inventor
Sadao Hasuno
Keiichiro Takitani
Akio Ejima
Toshihisa Tagami
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP3176380A priority Critical patent/JPS5835574B2/en
Publication of JPS56127731A publication Critical patent/JPS56127731A/en
Publication of JPS5835574B2 publication Critical patent/JPS5835574B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/085—Cooling or quenching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To prevent the generation of quenching crack, in quenching the steel pipe, by changing an injection pressure of a cooling water supplied into the pipe as an auxiliary cooling agent in accordance with a quenching process to maintain uniform cooling effect. CONSTITUTION:The steel pipe heated to an austenitizing temp. is fixed on a receiving standard 4 in a liquid tank 3 and a cooling water is injected from a cooling water injecting nozzle 6 for cooling an outer surface of said steel pipe and a cooling water injecting nozzle 7 for cooling an inner surface thereof provided at intervals to quenching inner and outer surfaces of said steel pipe 1 by cooling. In this case, in order to exclude air in the pipe at early stages of the tempering, the inner surface cooling water is injected at a low pressure of about 0.5-3kg/cm<2> and, subsequently, the pressure of said cooling water is switched to a steady pressure of about 3-12kg/ cm<2> required in the quenching or said pressure is raised from the low pressure to the normal pressure continuously and gradually. By this method, the generation of quenching crack can be surely prevented and, because uniform cooling is obtained at the inner surface of the steel pipe 1 to be quenched, a roundness and a straightness degrees of the steel pipe 1 are improved.
JP3176380A 1980-03-13 1980-03-13 How to harden steel pipes Expired JPS5835574B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3176380A JPS5835574B2 (en) 1980-03-13 1980-03-13 How to harden steel pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3176380A JPS5835574B2 (en) 1980-03-13 1980-03-13 How to harden steel pipes

Publications (2)

Publication Number Publication Date
JPS56127731A true JPS56127731A (en) 1981-10-06
JPS5835574B2 JPS5835574B2 (en) 1983-08-03

Family

ID=12340065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3176380A Expired JPS5835574B2 (en) 1980-03-13 1980-03-13 How to harden steel pipes

Country Status (1)

Country Link
JP (1) JPS5835574B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594445A1 (en) * 1986-02-18 1987-08-21 Mtu Muenchen Gmbh DEVICE FOR THE DIFFERENTIAL HEAT COOLING OR THERMAL BALANCE OF INTERIOR AND EXTERIOR WALLS OR WALL ZONES OF A PIECE, IN PARTICULAR A PIECE OF TURBO REACTORS
KR101101404B1 (en) * 2009-05-04 2012-01-02 주식회사화신 Cooling apparatus for hot forming beam
CN102912097A (en) * 2012-10-09 2013-02-06 范华平 Ring type water through cooling device used for steel rolling quenching
JP2013129870A (en) * 2011-12-21 2013-07-04 Nippon Steel & Sumitomo Metal Corp Method for producing seamless steel pipe for high strength line pipe
JP2013129873A (en) * 2011-12-21 2013-07-04 Nippon Steel & Sumitomo Metal Corp Method for producing seamless steel pipe for high strength line pipe
WO2016152668A1 (en) * 2015-03-24 2016-09-29 日本発條株式会社 Hollow stabilizer
WO2016152671A1 (en) * 2015-03-24 2016-09-29 日本発條株式会社 Method for producing hollow stabilizer
CN108315532A (en) * 2018-01-12 2018-07-24 湖北新冶钢特种钢管有限公司 Steel pipe water fog cooling means
CN114921638A (en) * 2022-05-06 2022-08-19 北京机电研究所有限公司 Accurate heat treatment method for low-carbon low-alloy high-strength thin steel plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7250136B2 (en) * 2018-12-13 2023-03-31 アルセロールミタル Method for determining crater end position of cast metal product

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594445A1 (en) * 1986-02-18 1987-08-21 Mtu Muenchen Gmbh DEVICE FOR THE DIFFERENTIAL HEAT COOLING OR THERMAL BALANCE OF INTERIOR AND EXTERIOR WALLS OR WALL ZONES OF A PIECE, IN PARTICULAR A PIECE OF TURBO REACTORS
KR101101404B1 (en) * 2009-05-04 2012-01-02 주식회사화신 Cooling apparatus for hot forming beam
JP2013129870A (en) * 2011-12-21 2013-07-04 Nippon Steel & Sumitomo Metal Corp Method for producing seamless steel pipe for high strength line pipe
JP2013129873A (en) * 2011-12-21 2013-07-04 Nippon Steel & Sumitomo Metal Corp Method for producing seamless steel pipe for high strength line pipe
CN102912097A (en) * 2012-10-09 2013-02-06 范华平 Ring type water through cooling device used for steel rolling quenching
JP2016179765A (en) * 2015-03-24 2016-10-13 日本発條株式会社 Hollow stabilizer
WO2016152671A1 (en) * 2015-03-24 2016-09-29 日本発條株式会社 Method for producing hollow stabilizer
JP2016179764A (en) * 2015-03-24 2016-10-13 日本発條株式会社 Manufacturing method of hollow stabilizer
WO2016152668A1 (en) * 2015-03-24 2016-09-29 日本発條株式会社 Hollow stabilizer
CN107249909A (en) * 2015-03-24 2017-10-13 日本发条株式会社 The manufacture method of hollow stabilizer
CN107428220A (en) * 2015-03-24 2017-12-01 日本发条株式会社 Hollow stabilizer
US10415110B2 (en) 2015-03-24 2019-09-17 Nhk Spring Co., Ltd. Method for producing hollow stabilizer
US10442269B2 (en) 2015-03-24 2019-10-15 Nhk Spring Co., Ltd. Hollow stabilizer
CN108315532A (en) * 2018-01-12 2018-07-24 湖北新冶钢特种钢管有限公司 Steel pipe water fog cooling means
CN114921638A (en) * 2022-05-06 2022-08-19 北京机电研究所有限公司 Accurate heat treatment method for low-carbon low-alloy high-strength thin steel plate
CN114921638B (en) * 2022-05-06 2023-11-03 中国机械总院集团北京机电研究所有限公司 Accurate heat treatment method for low-carbon low-alloy high-strength thin steel plate

Also Published As

Publication number Publication date
JPS5835574B2 (en) 1983-08-03

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