ES366233A1 - Method for controlling the nitriding tendency of aluminium-killed steel - Google Patents

Method for controlling the nitriding tendency of aluminium-killed steel

Info

Publication number
ES366233A1
ES366233A1 ES366233A ES366233A ES366233A1 ES 366233 A1 ES366233 A1 ES 366233A1 ES 366233 A ES366233 A ES 366233A ES 366233 A ES366233 A ES 366233A ES 366233 A1 ES366233 A1 ES 366233A1
Authority
ES
Spain
Prior art keywords
nitriding
tendency
aluminium
controlling
killed steel
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
ES366233A
Other languages
Spanish (es)
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.)
Armco Inc
Original Assignee
Armco 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 Armco Inc filed Critical Armco Inc
Publication of ES366233A1 publication Critical patent/ES366233A1/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

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)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

An aluminium-killed steel is annealed at 1100 -1450 F. in a nitrogen atmosphere containing 5-40% Hz the dew point of which is maintained between 0 F. and +70 F. during the anneal in order to control the nitriding tendency of the steel. The atmosphere may contain minor amounts of other gases such as CO and CO 2 .
ES366233A 1968-04-19 1969-04-19 Method for controlling the nitriding tendency of aluminium-killed steel Expired ES366233A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72257468A 1968-04-19 1968-04-19

Publications (1)

Publication Number Publication Date
ES366233A1 true ES366233A1 (en) 1971-03-16

Family

ID=24902426

Family Applications (1)

Application Number Title Priority Date Filing Date
ES366233A Expired ES366233A1 (en) 1968-04-19 1969-04-19 Method for controlling the nitriding tendency of aluminium-killed steel

Country Status (7)

Country Link
BE (1) BE731483A (en)
CA (1) CA933072A (en)
DE (1) DE1919208A1 (en)
ES (1) ES366233A1 (en)
FR (1) FR2006577A1 (en)
GB (1) GB1259847A (en)
NL (1) NL6906067A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334938A (en) * 1980-08-22 1982-06-15 Air Products And Chemicals, Inc. Inhibited annealing of ferrous metals containing chromium
EP2933357A1 (en) * 2014-04-14 2015-10-21 Haldor Topsøe A/S Enhancing SOEC system lifetime by controlling inlet gas composition
CN115652250B (en) * 2022-10-10 2023-06-20 广东工业大学 A high-efficiency and high-quality nitriding treatment method and its application

Also Published As

Publication number Publication date
FR2006577A1 (en) 1969-12-26
BE731483A (en) 1969-09-15
CA933072A (en) 1973-09-04
DE1919208A1 (en) 1969-10-30
GB1259847A (en) 1972-01-12
NL6906067A (en) 1969-10-21

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