GB645100A - Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them - Google Patents

Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them

Info

Publication number
GB645100A
GB645100A GB1498048A GB1498048A GB645100A GB 645100 A GB645100 A GB 645100A GB 1498048 A GB1498048 A GB 1498048A GB 1498048 A GB1498048 A GB 1498048A GB 645100 A GB645100 A GB 645100A
Authority
GB
United Kingdom
Prior art keywords
thin flat
relating
pieces
producing
pattern
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
GB1498048A
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 GB1498048A priority Critical patent/GB645100A/en
Priority to DEP42237A priority patent/DE824499C/en
Priority to AT168583D priority patent/AT168583B/en
Priority to FR987662D priority patent/FR987662A/en
Publication of GB645100A publication Critical patent/GB645100A/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
    • 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
    • C21D1/06—Surface hardening
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw blades

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)
  • Heat Treatment Of Articles (AREA)

Abstract

A thin flat workpiece has a hardened edge and a tough back with the zone of separation between them forming a lengthwise undulating, crenellated or zig-zag pattern. The pattern may be produced by feeding the workpiece, e.g. a saw-blade, through a heating medium and giving it periodically a movement transversely to the line of feed. The heating may be by flame or induction heating and in the latter case the pattern may be produced by suitably shaping the inductors.
GB1498048A 1948-06-03 1948-06-03 Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them Expired GB645100A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1498048A GB645100A (en) 1948-06-03 1948-06-03 Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them
DEP42237A DE824499C (en) 1948-06-03 1949-05-10 Surface hardened tool and process for its manufacture
AT168583D AT168583B (en) 1948-06-03 1949-05-20 Surface hardened tool and process for its manufacture
FR987662D FR987662A (en) 1948-06-03 1949-05-31 Surface hardening tool and its manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1498048A GB645100A (en) 1948-06-03 1948-06-03 Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them

Publications (1)

Publication Number Publication Date
GB645100A true GB645100A (en) 1950-10-25

Family

ID=10050939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1498048A Expired GB645100A (en) 1948-06-03 1948-06-03 Improvements in or relating to surface-hardened thin flat work-pieces and a process for producing them

Country Status (4)

Country Link
AT (1) AT168583B (en)
DE (1) DE824499C (en)
FR (1) FR987662A (en)
GB (1) GB645100A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2434763A (en) * 2005-07-08 2007-08-08 Stanley Works Induction hardened blade

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2434763A (en) * 2005-07-08 2007-08-08 Stanley Works Induction hardened blade
GB2434763B (en) * 2005-07-08 2011-07-06 Stanley Works Induction hardened blade
US8316550B2 (en) 2005-07-08 2012-11-27 Stanley Black & Decker, Inc. Induction hardened blade
US8322253B2 (en) 2005-07-08 2012-12-04 Stanley Black & Decker, Inc. Method of manufacturing a utility knife blade having an induction hardened cutting edge
US8448544B2 (en) 2005-07-08 2013-05-28 Stanley Black & Decker, Inc. Induction hardened blade

Also Published As

Publication number Publication date
DE824499C (en) 1951-12-13
AT168583B (en) 1951-06-25
FR987662A (en) 1951-08-17

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