EP0065678A1 - Procédé et appareil pour le traitement thermique par sections de pièces en métaux ferreux - Google Patents

Procédé et appareil pour le traitement thermique par sections de pièces en métaux ferreux Download PDF

Info

Publication number: EP0065678A1
Authority: EP; European Patent Office
Prior art keywords: bath; quenching; quenching medium; sections; heat treatment
Prior art date: 1981-05-21
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.): Granted

Application number

EP82103913A

Other languages

German (de)

English (en)

Other versions

EP0065678B1 (fr

Inventor

Wilhelm Hauke

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.)

Georg Fischer AG

Original Assignee

Georg Fischer AG

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.)

1981-05-21

Filing date

1982-05-06

Publication date

1982-12-01

1982-05-06 Application filed by Georg Fischer AG filed Critical Georg Fischer AG

1982-05-06 Priority to AT82103913T priority Critical patent/ATE27465T1/de

1982-12-01 Publication of EP0065678A1 publication Critical patent/EP0065678A1/fr

1987-05-27 Application granted granted Critical

1987-05-27 Publication of EP0065678B1 publication Critical patent/EP0065678B1/fr

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 13
CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims description 3
238000010438 heat treatment Methods 0.000 claims abstract description 9
238000010791 quenching Methods 0.000 claims abstract description 9
230000000171 quenching effect Effects 0.000 claims abstract description 9
239000000463 material Substances 0.000 claims abstract description 3
150000003839 salts Chemical class 0.000 claims description 4
239000002184 metal Substances 0.000 claims description 2
238000006243 chemical reaction Methods 0.000 claims 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
229910001018 Cast iron Inorganic materials 0.000 abstract 1
229910002804 graphite Inorganic materials 0.000 abstract 1
239000010439 graphite Substances 0.000 abstract 1
230000001939 inductive effect Effects 0.000 abstract 1
229910001563 bainite Inorganic materials 0.000 description 4
230000006698 induction Effects 0.000 description 3
239000007858 starting material Substances 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000003754 machining Methods 0.000 description 1
229910001562 pearlite Inorganic materials 0.000 description 1
238000005507 spraying Methods 0.000 description 1
238000005496 tempering Methods 0.000 description 1
229910000859 α-Fe Inorganic materials 0.000 description 1

Images

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
- C21D5/00—Heat treatments of cast-iron
- 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
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching

Definitions

the present invention relates to a method and an apparatus for section-wise heat treatment of components made of ferrous materials.
the disadvantage here is that the high-strength structural properties of the bainite are also transferred to those sections of the component in which they are not desired.
the object of the present invention is to propose an economical method and apparatus by which a partial formation of bainitic structures on B au- part is possible.
Bainitic boundary layers were produced on test specimens with dimensions of 16 x 60 mm with a largely pearlitic basic structure.
the sections to be treated were inductively heated to a temperature between 850 and 1000 ° C.
the drop height between the heating coil and the tempering bath was set at approx. 90 mm.
the test specimens were then kept in a salt bath at 275 ° C. for 120 minutes.
the method was also tested on a module 3 gearwheel.
the starting material was GGG with a pearlitic structure.
the temperature was raised to 900 ° C.
the heating-up time was 32 seconds.
the test wheel was maintained in the salt bath at 28 0 0 C for 120 minutes.
Module 3 gears were also treated in such a way that a bainitic structure was set from the tooth head to about 4 mm below the tooth base.
the quenching bath 1 shows a modified induction hardening system, the quenching bath 1 being arranged directly under the induction coil 2, so that the component 3 falls directly into the bath without the usual spraying by means of a shower arranged between the induction coil and bath 1.
the quenching medium can be a tempered salt bath or oil.
a metal bath can also be used.
a component A is shown in FIG. 2, the microstructure to be expected, together with the temperature curves to be expected, being indicated in the corresponding ZTU diagram.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Thermal Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Mechanical Engineering (AREA)
Physics & Mathematics (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Heat Treatment Of Articles (AREA)
Heat Treatments In General, Especially Conveying And Cooling (AREA)
Processing Of Solid Wastes (AREA)
Manufacture And Refinement Of Metals (AREA)
Furnace Charging Or Discharging (AREA)

EP82103913A 1981-05-21 1982-05-06 Procédé et appareil pour le traitement thermique par sections de pièces en métaux ferreux Expired EP0065678B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT82103913T ATE27465T1 (de)	1981-05-21	1982-05-06	Verfahren und vorrichtung zur abschnittsweisen waermebehandlung von bauteilen aus eisenwerkstoffen.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CH3312/81		1981-05-21
CH3312/81A CH653706A5 (de)	1981-05-21	1981-05-21	Verfahren und vorrichtung zur abschnittsweisen waermebehandlung von bauteilen aus eisenwerkstoffen.

Publications (2)

Publication Number	Publication Date
EP0065678A1 true EP0065678A1 (fr)	1982-12-01
EP0065678B1 EP0065678B1 (fr)	1987-05-27

Family

ID=4253262

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP82103913A Expired EP0065678B1 (fr)	1981-05-21	1982-05-06	Procédé et appareil pour le traitement thermique par sections de pièces en métaux ferreux

Country Status (7)

Country	Link
EP (1)	EP0065678B1 (fr)
JP (1)	JPS57194208A (fr)
AT (1)	ATE27465T1 (fr)
BR (1)	BR8202893A (fr)
CA (1)	CA1200741A (fr)
CH (1)	CH653706A5 (fr)
DE (1)	DE3276438D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5028281A (en) *	1988-06-14	1991-07-02	Textron, Inc.	Camshaft
EP0794262A1 (fr) *	1996-03-05	1997-09-10	Aisin Aw Co., Ltd.	Procédé pour effectuer une transformation en bainite par augmentation de la température

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1687656A (en) *	1925-07-23	1928-10-16	Westinghouse Electric & Mfg Co	Heat-treating method
DE1113225B (de) *	1957-09-19	1961-08-31	Tiroler Roehren & Metallwerk	Verfahren zur Oberflaechenhaertung von Gusseisen
DE2334992A1 (de) *	1972-07-12	1974-02-07	Kymin Oy Kymmene Ab	Legiertes gusseisen mit kugelgraphit
DE2010125B2 (de) *	1969-03-06	1978-02-02	Vereinigte Edelstahlwerke AG (VEW), Wien Niederlassung Vereinigte Edelstahlwerke AG (VEW) Verkaufsniederlassung Büderich, 4005 Meerbusch	Verfahren zur partiellen haertung von werkstuecken bzw. werkzeugen

1981
- 1981-05-21 CH CH3312/81A patent/CH653706A5/de not_active IP Right Cessation
1982
- 1982-05-06 DE DE8282103913T patent/DE3276438D1/de not_active Expired
- 1982-05-06 AT AT82103913T patent/ATE27465T1/de not_active IP Right Cessation
- 1982-05-06 EP EP82103913A patent/EP0065678B1/fr not_active Expired
- 1982-05-13 JP JP57079267A patent/JPS57194208A/ja active Pending
- 1982-05-19 BR BR8202893A patent/BR8202893A/pt unknown
- 1982-05-20 CA CA000403373A patent/CA1200741A/fr not_active Expired

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1687656A (en) *	1925-07-23	1928-10-16	Westinghouse Electric & Mfg Co	Heat-treating method
DE1113225B (de) *	1957-09-19	1961-08-31	Tiroler Roehren & Metallwerk	Verfahren zur Oberflaechenhaertung von Gusseisen
DE2010125B2 (de) *	1969-03-06	1978-02-02	Vereinigte Edelstahlwerke AG (VEW), Wien Niederlassung Vereinigte Edelstahlwerke AG (VEW) Verkaufsniederlassung Büderich, 4005 Meerbusch	Verfahren zur partiellen haertung von werkstuecken bzw. werkzeugen
DE2334992A1 (de) *	1972-07-12	1974-02-07	Kymin Oy Kymmene Ab	Legiertes gusseisen mit kugelgraphit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GIESSERIE, Band 65, Nr. 4, Februar 1978, Düsseldorf, J. DODD: "Zwischenstufenvergütung von Gusseisen mit Kugelgraphit" Seiten 73 bis 80 *
VDI ZEITSCHRIFT, Band 123, Nr. 4, Februar 1981, Düsseldorf, K. HORNUNG et al.: "Gusseisenwerkstoffe für hochbeanspruchte Fahrzeugteile wie Zahnräder" Seiten 16 bis 24 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5028281A (en) *	1988-06-14	1991-07-02	Textron, Inc.	Camshaft
EP0794262A1 (fr) *	1996-03-05	1997-09-10	Aisin Aw Co., Ltd.	Procédé pour effectuer une transformation en bainite par augmentation de la température
US5840136A (en) *	1996-03-05	1998-11-24	Aisin Aw Co., Ltd.	Temperature-raising bainite forming process

Also Published As

Publication number	Publication date
BR8202893A (pt)	1983-05-03
CH653706A5 (de)	1986-01-15
DE3276438D1 (en)	1987-07-02
CA1200741A (fr)	1986-02-18
EP0065678B1 (fr)	1987-05-27
JPS57194208A (en)	1982-11-29
ATE27465T1 (de)	1987-06-15

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