GB984723A - Improvements in processes and media for quenching metals - Google Patents

Improvements in processes and media for quenching metals

Info

Publication number
GB984723A
GB984723A GB4459262A GB4459262A GB984723A GB 984723 A GB984723 A GB 984723A GB 4459262 A GB4459262 A GB 4459262A GB 4459262 A GB4459262 A GB 4459262A GB 984723 A GB984723 A GB 984723A
Authority
GB
United Kingdom
Prior art keywords
liquid
carbon atoms
esters
steel
quenching
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
GB4459262A
Inventor
Arthur James Carver
Benjamin Thomas Fowler
Aubrey Turner Langton
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Priority to GB4459262A priority Critical patent/GB984723A/en
Priority to DE19631433731 priority patent/DE1433731A1/en
Publication of GB984723A publication Critical patent/GB984723A/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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/58—Oils

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

Metals including alloys are quenched, particularly steel to stabilize the martensitic structure, by heating the metal to an elevated temperature, e.g. 830 DEG C. for steel, 870 DEG C. for ferrous alloys or 885 DEG C. for nickel, and then quenching the heated metal by plunging it into a liquid at a lower temperature, e.g. 200-220 DEG C. for mar-quenching steel, consisting of or comprising a major proportion of one or more synthetic carboxylic acid esters, such as formed by a neo-pentyl polyol and a monocarboxylic acid having a chain length of at least 5 carbon atoms and substituted at the carbon atom in the alpha-position with 2 alkyl groups, preferably so that the acid contains a total of 9-20 carbon atoms. For example, the liquid may consist of one or more tri-esters of trimethylol propane or tetra-esters of pentaerythritol. Alternatively, the liquid may comprise a diester formed by a dicarboxylic acid and a monohydric alcohol with or without a complex ester of a dicarboxylic acid, a glycol and a monohydric alcohol. The liquid may also comprise as antioxidants 0.3-2% of a phenothiazine and 3-6% of a secondary aromatic amine such as a di(alkylphenyl)amine in which the alkyl groups each contain 4-12 carbon atoms, e.g. dioctyl dihenylamine. Other antioxidants may be used such as phenyl naphthylamines. Numerous acids and alcohols are specified in the Specification. The remaining portion of the liquid, if any, may be various mineral oils or polyphenyl ethers.
GB4459262A 1962-11-26 1962-11-26 Improvements in processes and media for quenching metals Expired GB984723A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4459262A GB984723A (en) 1962-11-26 1962-11-26 Improvements in processes and media for quenching metals
DE19631433731 DE1433731A1 (en) 1962-11-26 1963-11-23 Process for quenching metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4459262A GB984723A (en) 1962-11-26 1962-11-26 Improvements in processes and media for quenching metals

Publications (1)

Publication Number Publication Date
GB984723A true GB984723A (en) 1965-03-03

Family

ID=10433987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4459262A Expired GB984723A (en) 1962-11-26 1962-11-26 Improvements in processes and media for quenching metals

Country Status (1)

Country Link
GB (1) GB984723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004099450A1 (en) * 2003-05-09 2004-11-18 A. & A. Fratelli Parodi S.R.L. Quenching fluid composition
EP2714868B1 (en) * 2011-06-01 2018-03-07 ABB Research Ltd. Electrical apparatus containing dielectric fluids having reduced streamer speed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004099450A1 (en) * 2003-05-09 2004-11-18 A. & A. Fratelli Parodi S.R.L. Quenching fluid composition
EP2714868B1 (en) * 2011-06-01 2018-03-07 ABB Research Ltd. Electrical apparatus containing dielectric fluids having reduced streamer speed
US10109388B2 (en) 2011-06-01 2018-10-23 Abb Research Ltd. Dielectric fluids having reduced streamer speed

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