GB1454758A - Steel treatment process - Google Patents

Steel treatment process

Info

Publication number
GB1454758A
GB1454758A GB5182273A GB5182273A GB1454758A GB 1454758 A GB1454758 A GB 1454758A GB 5182273 A GB5182273 A GB 5182273A GB 5182273 A GB5182273 A GB 5182273A GB 1454758 A GB1454758 A GB 1454758A
Authority
GB
United Kingdom
Prior art keywords
steel
temperature
working
forged
forging
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.)
Expired
Application number
GB5182273A
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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
Priority claimed from JP47111944A external-priority patent/JPS4970856A/ja
Priority claimed from JP12500172A external-priority patent/JPS5344885B2/ja
Priority claimed from JP12698272A external-priority patent/JPS5319968B2/ja
Priority claimed from JP2005673A external-priority patent/JPS5532767B2/ja
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of GB1454758A publication Critical patent/GB1454758A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Abstract

1454758 Working at specified temperatures KOBE STEEL Ltd 8 Nov 1973 [8 Nov 1972 13 Dec 1972 18 Dec 1972 19 Feb 1973] 51822/73 Heading B3V A hot forging process for carbon or low alloy steel involves initially subjecting the steel to heat treatment or plastic working; cooling it; and finally reheating it followed by hot forging at a temperature between 450‹ C. and the A c1 transformation point. The strength and toughness of the steel are claimed to be improved by this process. The initial treatment may involve forging the steel at a temperature between the A c3 and 50‹ C. below the A C3 , followed by an oil or air quench. Alternatively, the steel may be cold rolled or drawn to give a reduction of greater than 15%, or may be forged at a temperature above the A C3 . It is preferred to heat the steel quickly to its working temperature and hold it for a short time during working. In an example, A151 1045 steel was initially forged at 750‹ C., was water quenched, and then hot forged at 600‹ C. The initial forging can alternatively take place at 820‹ C. (which is above the A c3 of 793‹ C).
GB5182273A 1972-11-08 1973-11-08 Steel treatment process Expired GB1454758A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP47111944A JPS4970856A (en) 1972-11-08 1972-11-08
JP12500172A JPS5344885B2 (en) 1972-12-13 1972-12-13
JP12698272A JPS5319968B2 (en) 1972-12-18 1972-12-18
JP2005673A JPS5532767B2 (en) 1973-02-19 1973-02-19

Publications (1)

Publication Number Publication Date
GB1454758A true GB1454758A (en) 1976-11-03

Family

ID=27457306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5182273A Expired GB1454758A (en) 1972-11-08 1973-11-08 Steel treatment process

Country Status (3)

Country Link
DE (1) DE2355894C3 (en)
FR (1) FR2205574B1 (en)
GB (1) GB1454758A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108754308A (en) * 2018-05-25 2018-11-06 张家港海锅新能源装备股份有限公司 The production method of tubing head high strength steel forging raw material in a kind of deep-sea oil production equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040872A (en) * 1976-04-16 1977-08-09 Lasalle Steel Company Process for strengthening of carbon steels

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1187877A (en) * 1956-10-22 1959-09-17 Lasalle Steel Co Metallurgical process for the treatment of steels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108754308A (en) * 2018-05-25 2018-11-06 张家港海锅新能源装备股份有限公司 The production method of tubing head high strength steel forging raw material in a kind of deep-sea oil production equipment

Also Published As

Publication number Publication date
DE2355894A1 (en) 1974-05-22
FR2205574B1 (en) 1976-05-07
FR2205574A1 (en) 1974-05-31
DE2355894B2 (en) 1979-01-25
DE2355894C3 (en) 1979-09-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee