GB646691A - Improvements in and relating to the heat treatment of metals - Google Patents

Improvements in and relating to the heat treatment of metals

Info

Publication number
GB646691A
GB646691A GB2803348A GB2803348A GB646691A GB 646691 A GB646691 A GB 646691A GB 2803348 A GB2803348 A GB 2803348A GB 2803348 A GB2803348 A GB 2803348A GB 646691 A GB646691 A GB 646691A
Authority
GB
United Kingdom
Prior art keywords
oxygen
air
partial combustion
preheat
products
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
GB2803348A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2803348A priority Critical patent/GB646691A/en
Publication of GB646691A publication Critical patent/GB646691A/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)
  • Furnace Details (AREA)

Abstract

In a modification of or improvement in the invention described in the parent Specification the partial combustion of the fluid fuel is obtained by using a gas containing over 70 per cent of oxygen and the products of partial combustion are burned to complete combustion at the entry end of a continuous furnace to preheat the metal. The metal being heated may be on the moving hearth of a straight or annular furnace and move in counter current to the products of partial combustion of town's gas with an oxygen/nitrogen mixture or with 100 per cent oxygen, the products of partial combustion being burned with air or air and oxygen, preheated or not, to preheat the metal. The waste gases may be used to preheat fluid fuel, air or air and oxygen.
GB2803348A 1948-10-28 1948-10-28 Improvements in and relating to the heat treatment of metals Expired GB646691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2803348A GB646691A (en) 1948-10-28 1948-10-28 Improvements in and relating to the heat treatment of metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2803348A GB646691A (en) 1948-10-28 1948-10-28 Improvements in and relating to the heat treatment of metals

Publications (1)

Publication Number Publication Date
GB646691A true GB646691A (en) 1950-11-29

Family

ID=10269179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2803348A Expired GB646691A (en) 1948-10-28 1948-10-28 Improvements in and relating to the heat treatment of metals

Country Status (1)

Country Link
GB (1) GB646691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763476A (en) * 1951-11-10 1956-09-18 Metallurg Processes Co Two stage combustion furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763476A (en) * 1951-11-10 1956-09-18 Metallurg Processes Co Two stage combustion furnace

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