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SE318362B - - Google Patents

Info

Publication number
SE318362B
SE318362B SE398/64A SE39864A SE318362B SE 318362 B SE318362 B SE 318362B SE 398/64 A SE398/64 A SE 398/64A SE 39864 A SE39864 A SE 39864A SE 318362 B SE318362 B SE 318362B
Authority
SE
Sweden
Prior art keywords
strip
rate
passing
cooled
critical
Prior art date
Application number
SE398/64A
Inventor
E Jedinger
Original Assignee
Miller M Gmbh
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 Miller M Gmbh filed Critical Miller M Gmbh
Publication of SE318362B publication Critical patent/SE318362B/xx

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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather
    • C14B5/02—Stamps or dies for leather articles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Metal Rolling (AREA)

Abstract

Steel strip for bending into the form of punching-out cutters for sheet material is formed with at least one tapered edge and is then cooled from the hardening temperature in such a way that the body of the strip cools at a rate slightly below critical while at the cutting edge the critical rate is exceeded. The strip may then be tempered. A particular composition exemplified consists of .carbon.0.7 .manganese.0.25 .silicon.0.25 .iron.balance It is differentially cooled from about 830 DEG C by passing through a quenching medium at a rate three times that necessary for complete hardening. The strip may be given the desired cross-section by passing it between suitably shaped rolls.
SE398/64A 1963-01-16 1964-01-14 SE318362B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT33363A AT250141B (en) 1963-01-16 1963-01-16 Process for the production of punching knives, which are used for punching parts of any shape from leather, hides, textiles, plastics, paper, cardboard and the like. a. Serve materials of a similar type

Publications (1)

Publication Number Publication Date
SE318362B true SE318362B (en) 1969-12-08

Family

ID=3487801

Family Applications (1)

Application Number Title Priority Date Filing Date
SE398/64A SE318362B (en) 1963-01-16 1964-01-14

Country Status (4)

Country Link
AT (1) AT250141B (en)
DE (1) DE1435289B2 (en)
GB (1) GB1049897A (en)
SE (1) SE318362B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919536A1 (en) * 1989-06-15 1990-12-20 Rolf Karl Stursberg Fa Cardboard cutting tool - is hardened by HF in chamber filled with protective gas
GB9417011D0 (en) * 1994-08-23 1994-10-12 Acme Gerrard Ltd Strapping

Also Published As

Publication number Publication date
GB1049897A (en) 1966-11-30
DE1435289B2 (en) 1971-06-03
DE1435289A1 (en) 1969-05-08
AT250141B (en) 1966-10-25

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