GB429940A - Improvements in or relating to annealing processes and furnaces - Google Patents

Improvements in or relating to annealing processes and furnaces

Info

Publication number
GB429940A
GB429940A GB3466033A GB3466033A GB429940A GB 429940 A GB429940 A GB 429940A GB 3466033 A GB3466033 A GB 3466033A GB 3466033 A GB3466033 A GB 3466033A GB 429940 A GB429940 A GB 429940A
Authority
GB
United Kingdom
Prior art keywords
per cent
furnaces
relating
annealing processes
furnace
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
GB3466033A
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 GB3466033A priority Critical patent/GB429940A/en
Publication of GB429940A publication Critical patent/GB429940A/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
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof

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 Details (AREA)
  • Catalysts (AREA)

Abstract

In a furnace for annealing metals in which a neutral or reducing gas is continuously circulated through the furnace and an apparatus for removing free oxygen, the latter includes a chamber in which is fitted a catalytic gauze made of an iron alloy containing 18 per cent of chromium, 8 per cent of nickel, 1 per cent of tungsten, and 1 per cent of vanadium. Specification 120,944, [Class 39 (iii)], is referred to.
GB3466033A 1933-12-08 1933-12-08 Improvements in or relating to annealing processes and furnaces Expired GB429940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3466033A GB429940A (en) 1933-12-08 1933-12-08 Improvements in or relating to annealing processes and furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3466033A GB429940A (en) 1933-12-08 1933-12-08 Improvements in or relating to annealing processes and furnaces

Publications (1)

Publication Number Publication Date
GB429940A true GB429940A (en) 1935-06-11

Family

ID=10368391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3466033A Expired GB429940A (en) 1933-12-08 1933-12-08 Improvements in or relating to annealing processes and furnaces

Country Status (1)

Country Link
GB (1) GB429940A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751278C (en) * 1937-03-31 1953-01-26 Siemens Schuckertwerke A G Annealing furnace operated with inert gas, especially bright annealing furnace for uninterrupted operation
EP0075438A1 (en) * 1981-09-19 1983-03-30 BOC Limited Heat treatment of metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751278C (en) * 1937-03-31 1953-01-26 Siemens Schuckertwerke A G Annealing furnace operated with inert gas, especially bright annealing furnace for uninterrupted operation
EP0075438A1 (en) * 1981-09-19 1983-03-30 BOC Limited Heat treatment of metals

Similar Documents

Publication Publication Date Title
GB429940A (en) Improvements in or relating to annealing processes and furnaces
GB461251A (en) Improvements in steel alloys suitable for parts of apparatus subjected to high temperatures
GB376467A (en) Improvements in or relating to the heat treatment of alloy irons and steels
GB450841A (en) Methods or processes for the heat-treatment of iron, steel and alloy steels
GB688244A (en) Improvements in and relating to electric welding processes
GB215231A (en) Improvements in and relating to alloys
GB447265A (en) Improvements in or relating to alloy steels
GB435104A (en) Improvements relating to the casting of aluminium and its alloys
GB419019A (en) Improvements in or relating to a rotary drum furnace
GB479344A (en) Improvements in or relating to electric muffle furnaces particularly for brazing tool tips to tool shanks
GB821652A (en) Precipitation-hardened welded castings
GB239716A (en) A process for the purification of combustion gases for decarbonising cast iron and other metal castings
JPS5693813A (en) Molten metal production of high chromium alloy steel
GB389887A (en) Process for treating iron or steel or their alloys for use for apparatus exposed to the action of hydrogen or gases containing same at elevated temperature and pressure
GB741567A (en) A method of making high-grade steel
GB465509A (en) Process for the passivation of ferrous metals
GB420887A (en) Improvements in the treatment of austenitic chromium-nickel steel alloys
GB443891A (en) Improvements in and relating to iron-chromium alloys
GB319698A (en) Improvements in and relating to methods of making tungsten and like metal carbides
GB510861A (en) An improved process for the production of copper free from oxygen and other gases
GB457981A (en) Improvements in and relating to the working of spongy iron into blooms
GB333237A (en) A method of, or process for, rendering austenitic nickelchromium steels non-corrodible
Adachi et al. A STUDY ON THE METHOD FOR REVEALING THE AUSTENITE GRAIN SIZE IN STEEL
GB794800A (en) Muffle type furnace with movable support struts
GB397684A (en) Improvements in heat distributing bodies (top plates) for electric cooking plates