EP0263093A2 - Dispositif de traitement thermique d'un fil métallique en défilement continu - Google Patents

Dispositif de traitement thermique d'un fil métallique en défilement continu Download PDF

Info

Publication number: EP0263093A2
Authority: EP; European Patent Office
Prior art keywords: drum; wire; tensioning; axis; roller
Prior art date: 1986-09-26
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

EP87890213A

Other languages

German (de)

English (en)

Other versions

EP0263093B1 (fr

EP0263093A3 (en

Inventor

Gerhard Dipl.-Ing. Dr. Ritter

Klaus Dipl.-Ing. Ritter

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.)

EVG Entwicklungs und Verwertungs GmbH

Original Assignee

EVG Entwicklungs und Verwertungs 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.)

1986-09-26

Filing date

1987-09-14

Publication date

1988-04-06

1987-09-14 Application filed by EVG Entwicklungs und Verwertungs GmbH filed Critical EVG Entwicklungs und Verwertungs GmbH

1988-04-06 Publication of EP0263093A2 publication Critical patent/EP0263093A2/fr

1988-08-10 Publication of EP0263093A3 publication Critical patent/EP0263093A3/de

1991-01-09 Application granted granted Critical

1991-01-09 Publication of EP0263093B1 publication Critical patent/EP0263093B1/fr

2007-09-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire

Definitions

the invention relates to a device for heat treatment, in particular annealing, of a continuously moving metal wire using a driven drum wrapped in wire with several turns in the heat treatment area.
Devices of this type allow a relatively long residence time of the wire in the heat treatment zone with a space-saving design.
a device of this type known from DE-B-595.364 designed as an annealing furnace, the drum is designed conically in such a way that the drum diameter is reached from the feed point of the wire so that the windings enclose the drum with play at the end, so here There is always a larger free wire length available for processing in an intermittent upsetting press for the production of screw bolts and similar objects.
a cause of an interruption in operation can be that the wire gets tangled when it is pulled off a reel.
the wire section remaining in the heat treatment zone is heated until it is practically annealed and thus becomes unusable, and there is additionally the risk that the wire, which may contract again in the event of cooling, will become so strong due to the resistance of the rigid drum Stretching is subjected to the fact that it tears. This danger of tearing also exists when a cooling treatment of the wire wound around a rigid drum is interrupted.
the invention is therefore first of all concerned with the object of eliminating the risk of the wire breaking in the event of an intentional or forced interruption of operation in a heat treatment device of the type specified in the introduction.
the drum wound by the continuously moving wire is assigned a tensioning roller or a group of tensioning rollers, the axial position of which can be changed from a predetermined rest position relative to the axial position of the drum, and that devices for changing the axial position of the tensioning roller or Each tensioning roller of the group is provided with a limited tensioning force in the sense of tensioning the windings of the wire wrapping around the drum and / or each tensioning roller in series.
the drum and the tensioning roller or the tensioning roller group form a system wrapped in the wire windings, the circumference of which is changed by changing the axial position of the tensioning roller or each tensioning roller the axial position of the drum can be changed, so that when a certain voltage in the wire is exceeded, a change in the relative axial positions enables the wire to be relieved and thus prevents the wire from tearing.
the axis of the tensioning roller or each tensioning roller of a tensioning roller group can be guided in parallel with respect to the axis of the drum.
the extent of the system formed by the drum and the tensioning roller or the group of tensioning rollers along the system axis automatically changes in accordance with the stretching or shrinking of the wire during annealing or Cooling can change, which effectively mimics a conical drum of variable conicity and the wire windings on the drum and on or on each tensioning roller fit well, without the risk of the wire tearing when the business is interrupted.
the displaceability of the axis of the or each tension roller can also be combined with the pivotability thereof with respect to the drum axis.
the drum and the tensioning roller or the group of tensioning rollers can be located in an oven housing which may be filled with protective gas.
the furnace housing should have a hood that opens automatically when the device is interrupted, in which the heating device of the furnace is preferably arranged, whereby in the event of an interruption in operation not only prevents the wire from tearing, but also prevents the wire section remaining in the furnace from annealing by allowing it to cool down.
the annealing furnace generally designated 1 in FIGS. 1 to 3 has a housing which consists of a base plate 2 and a hood 3 which can be placed thereon by means of handles 4, on the vertical side walls 5 of which the heating devices of the furnace are advantageously mounted.
a drum 6 is arranged in the interior of the annealing furnace 1 and is connected in a rotationally fixed manner to a shaft 7 passing through the base plate 2.
the shaft 7 carries a drive element, for example a Pulley 8.
a tensioning roller 10 is provided, which is rotatably mounted with stub axles 11 at the free ends of two one-armed levers 12, 13.
the other ends of the one-armed lever 12, 13 are attached to a shaft 14.
the shaft 14 also passes through the base plate 1 of the annealing furnace and carries at its outer end a one-armed lever 15, at the free end of which the piston rod 16 engages a cylinder-piston arrangement 17.
the drum 6 and the tension roller 10 with several turns wrapping wire 18 can be loaded with any tensile force that is selected so that the heat resistance of the wire 18 is not exceeded and it Wire in the event of a sudden cooling is possible to contract without tearing.
the oven hood 3 preferably together with the heating device for the oven, should be automatically lifted when the business is interrupted, so that the possibility of rapid cooling of the wire windings is created, which can be used because the associated risk of tearing has been eliminated in accordance with the invention is.
a wall part 26 is provided on the base plate 2 according to FIG. 3, in which there is an inlet guide 27 for the wire, and a corresponding recess is provided in the hood 3, in which the wall part 26 can engage.
the outgoing part of the wire lies just above the upper edge of the base plate 2 and can therefore be passed through a simple U-shaped slot in the hood.
the stub axles 11 of the tensioning roller are pivotably mounted by means of ball joints 33, etc. one end of the roll (the wire inlet side during annealing or the wire outlet side during cooling) in a stationary bearing pan which is supported by a bracket 28 which is fixedly connected to the base plate 2, and the other end in an adjustable bearing pan which is armed at one end of one Lever 13 is located, the other end is rotatably connected to a shaft 14 passing through the base plate 2.
a one-armed lever 15 ⁇ which has an elongated hole at its free end engages in which a driver connected to the piston rod 16 of a cylinder-piston arrangement 17 engages.
the axes of the drum and the tensioning roller are parallel to one another at the start of operation, that is to say in the cold state of the wire 18 wrapping around the drum 6 and the tensioning roller 10.
the wire heats up it expands so that there is a continuous lengthening of the wire windings from the inlet end to the outlet end of the drum.
the piston-cylinder arrangement 17 such an inclination of the axis of the tension roller 10 is then forced that the circumferential length of the system drum tension roller increases in the axial direction from the inlet point of the wire to the outlet point thereof and the Wire 18 lies substantially evenly on the drum and on the tensioning roller.
Fig. 6 shows an arrangement of the tension roller 10, in which it can both move and pivot.
two coaxial shafts 29, 30 are provided.
a one-armed lever 31 is connected to one end of the inner shaft 29 and a one-armed lever 32 is rotatably connected to one end of the outer shaft 30.
Each of the one-armed levers 31, 32 carries at its free end a bearing socket in which one of the stub axles 11 of the tensioning roller 10 engages with a ball joint 33.
the coaxial shafts 29, 30 are each spring-loaded by means of a piston-cylinder arrangement analogous to the arrangement 17 in FIG. 1, independently of one another in the sense of tensioning the wire wrapping around the drum 6 and the tensioning roller 10 .
the tensioning roller 10 By rotating the two shafts 29 and 30 in the same direction, the tensioning roller 10 is displaced in parallel, and by rotating the outer shaft 30 alone, the tensioning roller 10 is pivoted about the end lying at the top in FIG. 6. By counter-rotation of the two shafts 29 and 30 equal angular amounts, the tensioning roller is pivoted about its axis center. By rotating the two shafts 29 and 30 by unequal angular amounts, the tensioning roller 10 can finally be moved and pivoted in parallel.
FIG. 7 A further embodiment of the invention is shown in a schematic top view (with the furnace hood raised) in FIG. 7. 7, a group of six tensioning rollers 10 ⁇ is arranged in a star shape around a drum 6. These tensioning rollers 10 ⁇ can be displaceably and / or pivotably mounted, as has been described with reference to FIGS. 1 to 3 (displaceable mounting), FIGS. 4 and 5 (pivoting mounting) and from FIG. 6 (displaceable and pivoting mounting) . In Fig. 6, for the sake of simplicity, the same reference is for the tensioning roller arrangement Signs as in Figs. 1 to 3 have been used.
the wire can be guided alternately over the drum 6 and one of the tensioning rollers 10 ⁇ in a largely arbitrary manner.
the tensioning rollers 10 ⁇ can have essentially the same length of freedom with regard to the wire guidance over the drum tensioning roller system.
the tensioning rollers can also have only a fraction of the length of the drum, in the example shown about a sixth of this length, each tensioning roller being arranged opposite a specific length section of the drum axis and the wire with several turns over the drum and the first tensioning roller, then over the drum and the second tension roller, etc. is guided.
the surfaces thereof can have helical grooves 25, as shown in FIG. 8.
the device according to the invention is suitable for the heat treatment of wires of largely any cross-sectional shape and in particular also of wires of different metal compositions and correspondingly different required treatment temperatures, especially since the tensioning rollers Adjust automatically depending on the temperature-dependent change in length of the wire.

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 Strip Materials And Filament Materials (AREA)

EP87890213A 1986-09-26 1987-09-14 Dispositif de traitement thermique d'un fil métallique en défilement continu Expired - Lifetime EP0263093B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT0257886A AT389321B (de)	1986-09-26	1986-09-26	Vorrichtung zum waermebehandeln eines kontinuierlich fortbewegten metalldrahtes
AT2578/86		1986-09-26

Publications (3)

Publication Number	Publication Date
EP0263093A2 true EP0263093A2 (fr)	1988-04-06
EP0263093A3 EP0263093A3 (en)	1988-08-10
EP0263093B1 EP0263093B1 (fr)	1991-01-09

Family

ID=3536809

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87890213A Expired - Lifetime EP0263093B1 (fr)	1986-09-26	1987-09-14	Dispositif de traitement thermique d'un fil métallique en défilement continu

Country Status (7)

Country	Link
US (1)	US4913650A (fr)
EP (1)	EP0263093B1 (fr)
JP (1)	JPS6389629A (fr)
AT (1)	AT389321B (fr)
DE (1)	DE3767264D1 (fr)
ES (1)	ES2001331B3 (fr)
GR (2)	GR880300106T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE524588C2 (sv) *	2002-12-23	2004-08-31	Sandvik Ab	Förfarande jämte anordning för att kyla band- och trådmaterial
US20070095006A1 (en) *	2005-11-01	2007-05-03	Konersmann Ronald D	Lightweight portable concrete enclosure and associated method of construction

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB342892A (en) *	1930-01-31	1931-02-12	Gerster Heinrich	Improvements in apparatus for drying and imparting gloss to photographs
DE595364C (de) *	1932-12-28	1934-04-13	Kuhne G M B H	Waermofen mit innen angeordneter drehbarer Trommel
US2654139A (en) *	1949-03-10	1953-10-06	United States Steel Corp	Continuous strand helical conveying apparatus
US2589411A (en) *	1949-04-05	1952-03-18	United States Steel Corp	Continuous strand helical conveying apparatus
US2628790A (en) *	1949-05-04	1953-02-17	Westfalenhutte Dortmund Ag	Reeling furnace for hot band rolling
US2622860A (en) *	1949-05-10	1952-12-23	United States Steel Corp	Apparatus for continuously processing strands
US2587742A (en) *	1949-05-10	1952-03-04	United States Steel Corp	Apparatus for continuously processing strands
GB811613A (en) *	1956-07-20	1959-04-08	Francois Marius Rosaz	Furnace for continuously heating wire
US2952451A (en) *	1958-10-22	1960-09-13	United States Steel Corp	Strip breakage detecting apparatus for continuous strip furnaces
GB969191A (en) *	1959-09-26	1964-09-09	Somerset Wire Company Ltd	Improvements in the manufacture of wire
DE1206458B (de) *	1960-09-13	1965-12-09	Vaughn Machinery Company	Vorrichtung zum Waermebehandeln von Draht
GB1238367A (fr) *	1968-11-11	1971-07-07
GB1343812A (en) *	1972-06-29	1974-01-16	British Ropes Ltd	Treating elongate metal elements
US3921317A (en) *	1973-10-26	1975-11-25	Armstrong Cork Co	Apparatus to iron fibers on a moving web
US3857673A (en) *	1974-03-08	1974-12-31	E Andrus	Apparatus for heat treating continuous wire and rod
DE2425738C2 (de) *	1974-05-28	1986-03-27	Drabert Söhne Minden (Westf.), 4950 Minden	Kontinuierlich arbeitende Dekatiermaschine
US4469534A (en) *	1981-12-12	1984-09-04	Southwire Company	Method for controlled temperature accumulator for elongated materials

1986
- 1986-09-26 AT AT0257886A patent/AT389321B/de not_active IP Right Cessation
1987
- 1987-09-14 DE DE8787890213T patent/DE3767264D1/de not_active Expired - Lifetime
- 1987-09-14 ES ES87890213T patent/ES2001331B3/es not_active Expired - Lifetime
- 1987-09-14 EP EP87890213A patent/EP0263093B1/fr not_active Expired - Lifetime
- 1987-09-21 US US07/099,066 patent/US4913650A/en not_active Expired - Fee Related
- 1987-09-25 JP JP62239106A patent/JPS6389629A/ja active Pending
1988
- 1988-12-16 GR GR88300106T patent/GR880300106T1/el unknown
1991
- 1991-01-10 GR GR90401082T patent/GR3001298T3/el unknown

Also Published As

Publication number	Publication date
ES2001331A4 (es)	1988-05-16
US4913650A (en)	1990-04-03
ATA257886A (de)	1989-04-15
GR880300106T1 (en)	1988-12-16
DE3767264D1 (de)	1991-02-14
EP0263093B1 (fr)	1991-01-09
GR3001298T3 (en)	1992-08-26
ES2001331B3 (es)	1991-07-01
JPS6389629A (ja)	1988-04-20
EP0263093A3 (en)	1988-08-10
AT389321B (de)	1989-11-27

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1988-02-20	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1988-05-16	TCNL	Nl: translation of patent claims filed
1988-05-18	GBC	Gb: translation of claims filed (gb section 78(7)/1977)
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