GB584396A - Improvements in or relating to the heat treatment of steels and alloy steels - Google Patents

Improvements in or relating to the heat treatment of steels and alloy steels

Info

Publication number
GB584396A
GB584396A GB1484244A GB1484244A GB584396A GB 584396 A GB584396 A GB 584396A GB 1484244 A GB1484244 A GB 1484244A GB 1484244 A GB1484244 A GB 1484244A GB 584396 A GB584396 A GB 584396A
Authority
GB
United Kingdom
Prior art keywords
steels
bath
heat treatment
per cent
relating
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
GB1484244A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1484244A priority Critical patent/GB584396A/en
Publication of GB584396A publication Critical patent/GB584396A/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)
  • Glass Compositions (AREA)

Abstract

A fused salt bath for the heat treatment of steels and alloy steels comprises 87-97.5 per cent. by weight of anhydrous barium chloride, 0.5-3.0 silica and 2-10 of a boron compound such as anhydrous or hydrated borax, the temperature of the bath being 970-1350 DEG C. The bath may also contain an amount not exceeding 2 per cent. by weight of silicon carbide. In an example, the bath consists of 94 per cent. of anhydrous barium chloride, 5 of hydrated borax and 1 of silica. Instead of borax, other boron compounds such as other aklali borates, boric acid and boric anhydride may be used. Specification 415,846 is referred to.
GB1484244A 1944-08-03 1944-08-03 Improvements in or relating to the heat treatment of steels and alloy steels Expired GB584396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1484244A GB584396A (en) 1944-08-03 1944-08-03 Improvements in or relating to the heat treatment of steels and alloy steels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1484244A GB584396A (en) 1944-08-03 1944-08-03 Improvements in or relating to the heat treatment of steels and alloy steels

Publications (1)

Publication Number Publication Date
GB584396A true GB584396A (en) 1947-01-14

Family

ID=10048438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1484244A Expired GB584396A (en) 1944-08-03 1944-08-03 Improvements in or relating to the heat treatment of steels and alloy steels

Country Status (1)

Country Link
GB (1) GB584396A (en)

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