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GB698425A - Improvements relating to the heat treatment of heat resisting alloys - Google Patents

Improvements relating to the heat treatment of heat resisting alloys

Info

Publication number
GB698425A
GB698425A GB2847750A GB2847750A GB698425A GB 698425 A GB698425 A GB 698425A GB 2847750 A GB2847750 A GB 2847750A GB 2847750 A GB2847750 A GB 2847750A GB 698425 A GB698425 A GB 698425A
Authority
GB
United Kingdom
Prior art keywords
heat
water
improvements relating
heat treatment
resisting alloys
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
GB2847750A
Inventor
Eric James Whitehead
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB2847750A priority Critical patent/GB698425A/en
Publication of GB698425A publication Critical patent/GB698425A/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
    • C21D1/34—Methods of heating
    • C21D1/44—Methods of heating in heat-treatment baths
    • C21D1/46—Salt baths

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)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Articles of a heat-resisting alloy are heat treated in a bath of boric-cryolite. The bath may consist of 85-95 per cent boric p anhydride and 5-15 per cent cryolite and may be maintained at a temperature of 1050 DEG -1070 DEG F or may be used at 700 DEG C for steel and 950 DEG C for nickel. After heating the article may be washed in water at 95 DEG C, then in cold water and finally in water at 95 DEG C. The hot wash water may contain caustic soda. Specifications 588,552, 673,901, 674,723 and 674,724 are referred to.
GB2847750A 1950-11-21 1950-11-21 Improvements relating to the heat treatment of heat resisting alloys Expired GB698425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2847750A GB698425A (en) 1950-11-21 1950-11-21 Improvements relating to the heat treatment of heat resisting alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2847750A GB698425A (en) 1950-11-21 1950-11-21 Improvements relating to the heat treatment of heat resisting alloys

Publications (1)

Publication Number Publication Date
GB698425A true GB698425A (en) 1953-10-14

Family

ID=10276253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2847750A Expired GB698425A (en) 1950-11-21 1950-11-21 Improvements relating to the heat treatment of heat resisting alloys

Country Status (1)

Country Link
GB (1) GB698425A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1238739B (en) * 1959-12-11 1967-04-13 Rolls Royce Application of a hard alloy coating to a bearing shaft by spray welding
US3390021A (en) * 1965-10-15 1968-06-25 North American Rockwell Metal treatment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1238739B (en) * 1959-12-11 1967-04-13 Rolls Royce Application of a hard alloy coating to a bearing shaft by spray welding
US3390021A (en) * 1965-10-15 1968-06-25 North American Rockwell Metal treatment

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