GB1398062A - Production of quenched and tempered hollow steel structural members of polygonal cross section - Google Patents

Production of quenched and tempered hollow steel structural members of polygonal cross section

Info

Publication number
GB1398062A
GB1398062A GB4356073A GB4356073A GB1398062A GB 1398062 A GB1398062 A GB 1398062A GB 4356073 A GB4356073 A GB 4356073A GB 4356073 A GB4356073 A GB 4356073A GB 1398062 A GB1398062 A GB 1398062A
Authority
GB
United Kingdom
Prior art keywords
section
tube
temperature
polygonal cross
tempering
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
GB4356073A
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of GB1398062A publication Critical patent/GB1398062A/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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (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

1398062 Making hollow structural members USS ENGS & CONSULTANTS Inc 17 Sept 1973 [25 Sept 1972] 43560/73 Heading B3A [Also in Division C7] A hollow steel structural member of polygonal cross-section, e.g. square or rectangular, is made by hot-rolling a hollow tube of round cross-section, austenitizing the tube at a temperature above A 3 , water quenching, reheating to a tempering temperature above the stressrelieving temperature and below A 1 , tempering the tube at this temperature, rolling it to polygonal cross-section while within the tempering temperature range, and air cooling the tube. Table 1 (not shown) gives two examples of suitable steels, a further example having 0À2% C, 1À45% Mn and 0À06% V. Austenitizing is at a temperature above 1550‹ F., e.g. 1600-1750‹ F, preferably in an air atmosphere in a gasfired furnace. The tube may be water-quenched in spray rings to below 200‹ F., e.g. 150‹ F. Tempering is at a temperature between 1150‹ F. and 1225‹ F.
GB4356073A 1972-09-25 1973-09-17 Production of quenched and tempered hollow steel structural members of polygonal cross section Expired GB1398062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29185472A 1972-09-25 1972-09-25

Publications (1)

Publication Number Publication Date
GB1398062A true GB1398062A (en) 1975-06-18

Family

ID=23122143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4356073A Expired GB1398062A (en) 1972-09-25 1973-09-17 Production of quenched and tempered hollow steel structural members of polygonal cross section

Country Status (7)

Country Link
US (1) US3779817A (en)
JP (1) JPS49123963A (en)
CA (1) CA986824A (en)
DE (1) DE2348152A1 (en)
FR (1) FR2200360B1 (en)
GB (1) GB1398062A (en)
IT (1) IT996728B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210095A (en) * 1975-07-14 1977-01-26 Nippon Telegr & Teleph Corp <Ntt> Solid laser apparatus
US5110375A (en) * 1990-09-20 1992-05-05 Parsons Kevin L Baton method of heat treating expandable
DE19838673C1 (en) * 1998-08-20 2000-04-20 Mannesmann Ag Process for the production of high-strength and tough steel profile tubes and plant for its implementation
DE602004020682D1 (en) * 2004-02-20 2009-05-28 Neturen Co Ltd PROCESS AND DEVICE FOR INDUCTION HEATING AND HARDENING DEVICE
WO2017207660A1 (en) * 2016-05-31 2017-12-07 Vallourec Deutschland Gmbh Method for producing an elongated hollow body consisting of steel and having a polygonal, in particular square or rectangular, cross-section
DE102016110045A1 (en) 2016-05-31 2017-11-30 Vallourec Deutschland Gmbh Process for producing an elongated hollow body made of steel with a polygonal, in particular square or rectangular, cross section

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222263A (en) * 1940-03-02 1940-11-19 South Chester Tube Company Method of heat treatment for pipes
US2256455A (en) * 1940-03-30 1941-09-16 Republic Steel Corp Oil well casing
US2748039A (en) * 1951-12-17 1956-05-29 United States Steel Corp Method of heat treating metallic pipes

Also Published As

Publication number Publication date
CA986824A (en) 1976-04-06
FR2200360B1 (en) 1976-05-14
JPS49123963A (en) 1974-11-27
US3779817A (en) 1973-12-18
DE2348152A1 (en) 1974-03-28
IT996728B (en) 1975-12-10
FR2200360A1 (en) 1974-04-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee