JPS5629625A - Manufacture of cr-mo steel hot molded product having excellent mechanical strength - Google Patents

Manufacture of cr-mo steel hot molded product having excellent mechanical strength

Info

Publication number
JPS5629625A
JPS5629625A JP10639079A JP10639079A JPS5629625A JP S5629625 A JPS5629625 A JP S5629625A JP 10639079 A JP10639079 A JP 10639079A JP 10639079 A JP10639079 A JP 10639079A JP S5629625 A JPS5629625 A JP S5629625A
Authority
JP
Japan
Prior art keywords
molded product
less
steel hot
heated
manufacture
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
JP10639079A
Other languages
Japanese (ja)
Other versions
JPS633928B2 (en
Inventor
Masaaki Ishikawa
Shuzo Ueda
Yuji Kusuhara
Eiji Kobayashi
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 JP10639079A priority Critical patent/JPS5629625A/en
Publication of JPS5629625A publication Critical patent/JPS5629625A/en
Publication of JPS633928B2 publication Critical patent/JPS633928B2/ja
Granted 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

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 Steel (AREA)

Abstract

PURPOSE:To obtain the Cr-Mo steel hot molded product by omitting annealing treatment after hot molding by a procedure in which the Cr-Mo steel material composed of specific components, e.g., C, Si, etc., heated to a specific temperature, molded, processed, again heated to a specific temperature, and then cooled. CONSTITUTION:In the manufacture of Cr-Mo steel hot molded product, composed of 0.15wt% or less C, 0.5wt% or less Si, 0.27-0.63wt% Mn, 0.035wt% or less p, 0.035wt% or less S, 1.88-2.62wt% Cr, 0.85-1.15wt% Mo, and the balance Fe, the said Cr-Mo steel material is heated to a temperature between the point of transformation of Ac3 and 950 deg.C, molded and processed in a temperature range lower than the transformation point Ar3 but higher than the point Bs, and then heated to a temperature higher than 500 deg.C but lower than the transformation point Ac1, followed by cooling. Thus, omitting heat treatment after molding and process, as in the conventional cases, a Cr-Mo steel hot molded product suitable for welding structure materials for a pressure container, etc. can be obtained at low cost.
JP10639079A 1979-08-20 1979-08-20 Manufacture of cr-mo steel hot molded product having excellent mechanical strength Granted JPS5629625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10639079A JPS5629625A (en) 1979-08-20 1979-08-20 Manufacture of cr-mo steel hot molded product having excellent mechanical strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10639079A JPS5629625A (en) 1979-08-20 1979-08-20 Manufacture of cr-mo steel hot molded product having excellent mechanical strength

Publications (2)

Publication Number Publication Date
JPS5629625A true JPS5629625A (en) 1981-03-25
JPS633928B2 JPS633928B2 (en) 1988-01-26

Family

ID=14432359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10639079A Granted JPS5629625A (en) 1979-08-20 1979-08-20 Manufacture of cr-mo steel hot molded product having excellent mechanical strength

Country Status (1)

Country Link
JP (1) JPS5629625A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01162724A (en) * 1987-12-21 1989-06-27 Kawasaki Steel Corp Manufacture of high strength cr-mo steel pipe having superior corrosion resistance and weldability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719130U (en) * 1991-03-18 1995-04-07 恒雄 田中 Beverage storage paper box

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552749A (en) * 1978-06-20 1980-01-10 Kawasaki Steel Corp Manufacture of hot formed product of high toughness low alloy steel containing mo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552749A (en) * 1978-06-20 1980-01-10 Kawasaki Steel Corp Manufacture of hot formed product of high toughness low alloy steel containing mo

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01162724A (en) * 1987-12-21 1989-06-27 Kawasaki Steel Corp Manufacture of high strength cr-mo steel pipe having superior corrosion resistance and weldability
JPH0579734B2 (en) * 1987-12-21 1993-11-04 Kawasaki Steel Co

Also Published As

Publication number Publication date
JPS633928B2 (en) 1988-01-26

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