NO20002641L - Heat treatment of wearable work tools - Google Patents

Heat treatment of wearable work tools

Info

Publication number
NO20002641L
NO20002641L NO20002641A NO20002641A NO20002641L NO 20002641 L NO20002641 L NO 20002641L NO 20002641 A NO20002641 A NO 20002641A NO 20002641 A NO20002641 A NO 20002641A NO 20002641 L NO20002641 L NO 20002641L
Authority
NO
Norway
Prior art keywords
insert
areas
heat treatment
resistance
area
Prior art date
Application number
NO20002641A
Other languages
Norwegian (no)
Other versions
NO20002641D0 (en
Inventor
Arnold Furre
Original Assignee
Kverneland Klepp As
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 Kverneland Klepp As filed Critical Kverneland Klepp As
Publication of NO20002641D0 publication Critical patent/NO20002641D0/en
Publication of NO20002641L publication Critical patent/NO20002641L/en

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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/02—Plough blades; Fixing the blades
    • A01B15/04—Shares
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D2221/00—Treating localised areas of an article

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Soil Sciences (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Fremgangsmåte for varmebehandling av et slitbart arbeidsverk-tøy (20, 36), særlig et plogskjær (20) som har et forkantpar-ti (22) som utsettes for slitasje under pløying, og et feste-område (23) som har festehuller (24) plassert med innbyrdes avstand, via hvilke skjæret kan monteres på en sal, hvor be-handlingen omfatter trinnene: oppvarming av hele skjærlegemet i tilstrekkelig utstrekning, etterfulgt av rask nedkjøling, for derved å herde skjæret og tilveiebringe et nødvendig nivå av slitasjebestandighet i forkantområdet (22); og deretter utførelse av stedbegrenset anløpning av i det minste områdene som omgir festehullene (24) i festeområdet (23), på begge si-der av skjæret, for å fjerne i det minste noe av sprøhet som måtte finnes i slike områder, og som er forårsaket av det innledende herdetrinn for slitasjebestandighet, og for derved å forbedre motstanden i slike områder mot mulig dannelse av spenningsbrudd under belastning.Method for heat treatment of a wearable work tool (20, 36), in particular a plow blade (20) having a leading edge portion (22) which is subjected to wear during plowing, and a fastening area (23) having fastening holes (24 ) spaced apart, via which the insert can be mounted on a saddle, the treatment comprising the steps of: heating the entire insert to a sufficient extent, followed by rapid cooling, thereby hardening the insert and providing a necessary level of wear resistance in the leading edge area ( 22); and then performing site-limited tempering of at least the areas surrounding the mounting holes (24) in the mounting area (23), on both sides of the insert, to remove at least some of the brittleness that may be present in such areas, and which is caused by the initial hardening step of abrasion resistance, and thereby improving the resistance in such areas to possible formation of stress fractures under load.

NO20002641A 1998-10-14 2000-05-23 Heat treatment of wearable work tools NO20002641L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9822392.8A GB9822392D0 (en) 1998-10-14 1998-10-14 Heat treatment of wearable working tool
PCT/GB1999/003111 WO2000022177A1 (en) 1998-10-14 1999-09-17 Heat treatment of wearable working tool

Publications (2)

Publication Number Publication Date
NO20002641D0 NO20002641D0 (en) 2000-05-23
NO20002641L true NO20002641L (en) 2000-07-31

Family

ID=10840542

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20002641A NO20002641L (en) 1998-10-14 2000-05-23 Heat treatment of wearable work tools

Country Status (6)

Country Link
EP (1) EP1038040A1 (en)
AU (1) AU6101599A (en)
GB (1) GB9822392D0 (en)
NO (1) NO20002641L (en)
PL (1) PL341048A1 (en)
WO (1) WO2000022177A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ296830B6 (en) * 2004-09-21 2006-06-14 Jihoceská univerzita v Ceských Budejovicých Zemedelská fakulta Plough body

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1959650A (en) * 1933-08-12 1934-05-22 Massey Harris Co Ltd Method of heat-treating metal articles
FR787198A (en) * 1934-06-11 1935-09-18 Cie Forges Et Acieries Marine Further training in the manufacture of hooks, glasses, coupling shackles and similar coupling components
FR831538A (en) * 1937-01-02 1938-09-07 Pfingstmann Werke Ag Method and installation for the manufacture of slides, bandaged troughs and similar bodies in the form of gutters made of sheet steel to be hardened
GB665968A (en) * 1948-12-03 1952-02-06 Jiri Stivin A method of manufacturing tools
GB911626A (en) * 1958-01-27 1962-11-28 Ransomes Sims & Jefferies Ltd Improvements in ploughshares
US4305272A (en) * 1979-04-05 1981-12-15 Ralph Mckay Limited Agricultural discs
DE3339846A1 (en) * 1983-11-04 1985-05-23 Berchem & Schaberg Gmbh, 4650 Gelsenkirchen Forged or rolled agricultural tools

Also Published As

Publication number Publication date
WO2000022177A1 (en) 2000-04-20
PL341048A1 (en) 2001-03-26
GB9822392D0 (en) 1998-12-09
NO20002641D0 (en) 2000-05-23
AU6101599A (en) 2000-05-01
EP1038040A1 (en) 2000-09-27

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application