EP0976469A2 - Procédé de redressage linéaire - Google Patents

Procédé de redressage linéaire Download PDF

Info

Publication number: EP0976469A2
Authority: EP; European Patent Office
Prior art keywords: rod; stresses; cross; straightening; longitudinal direction
Prior art date: 1998-07-27
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP99890245A

Other languages

German (de)

English (en)

Other versions

EP0976469A3 (fr

Inventor

Werner Friedrich Dipl-Ing Dr-Ing Schwenzfeier

Josef Dipl-Ing. Gahleitner

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.)

Institut fur Verformungskunde und Huettenmaschinen

Original Assignee

Institut fur Verformungskunde und Huettenmaschinen

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.)

1998-07-27

Filing date

1999-07-21

Publication date

2000-02-02

1999-07-21 Application filed by Institut fur Verformungskunde und Huettenmaschinen filed Critical Institut fur Verformungskunde und Huettenmaschinen

2000-02-02 Publication of EP0976469A2 publication Critical patent/EP0976469A2/fr

2002-12-18 Publication of EP0976469A3 publication Critical patent/EP0976469A3/fr

Status Withdrawn legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 25
239000000463 material Substances 0.000 claims abstract description 41
230000006835 compression Effects 0.000 claims description 11
238000007906 compression Methods 0.000 claims description 11
239000007769 metal material Substances 0.000 claims description 2
230000004075 alteration Effects 0.000 abstract 1
238000010586 diagram Methods 0.000 description 10
230000000694 effects Effects 0.000 description 8
238000005259 measurement Methods 0.000 description 3
239000002344 surface layer Substances 0.000 description 2
239000013077 target material Substances 0.000 description 2
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
229910001315 Tool steel Inorganic materials 0.000 description 1
238000005452 bending Methods 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
238000010924 continuous production Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000011835 investigation Methods 0.000 description 1
239000010410 layer Substances 0.000 description 1
238000011089 mechanical engineering Methods 0.000 description 1
239000011343 solid material Substances 0.000 description 1

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working

Definitions

the invention relates to a method for straightening rod-shaped, metallic material with possibly different strength over the Cross section, for example of rolled and / or mechanical and / or thermally treated bars, such as round bars, railroad tracks and the like, for setting high material strength of the target and certain or low residual stresses in this through plastic Longitudinal compression with subsequent plastic stretching.
a linear straightening of metallic rod material takes place in each case by at least partial plastic deformation of the material across the cross-section.
A is particularly widespread, even for larger cross-sections of the leveling material so-called bending straightening, in which the rod, mostly in a continuous process, is bent back and forth by means of rollers.
bending straightening in which the rod, mostly in a continuous process, is bent back and forth by means of rollers.
a method has become known from SU - 1 311 807 A1 which uses a plastic compression deformation with subsequent tensile deformation is disclosed, in particular a high uniformity of the cross section of the straightening good should be achieved.
the development of Curvatures during straightening with differences in strength in Cross-sectional areas of the rod is disclosed.
the invention aims to overcome the disadvantages of the known straightening methods to remove rod-shaped metallic goods and a new improved To create procedures with which after the straightening the rod or Rod has high linearity, even if in the cross section of the same areas with different strength. It is in extension of this goal task according to the invention, desired residual stresses in the leveling material minimize and / or set to desired values.
the main advantages achieved with the invention are that at The best level of quality longitudinal internal stresses in the goods are set in the desired manner or can essentially be completely degraded. Through the Material expansion in the second step will also have a high yield strength Real good achieved.
the invention has been found to be based on the following findings: If there are areas with different strengths in the target cross-section, then In the first process step, the less firm areas are compressed earlier plasticized than the higher strength; overall, however, the permanent change in shape be kept as low as possible. Now there is a in the second step Elongation of the rod until the stresses in the entire cross-section are equal are, this means that the less rigid cross-sectional areas are a have experienced a correspondingly large permanent extension, so lie after the Do not relieve any axially directed residual stresses in the leveling material. The degree of stretch is determined by the difference in flow resistance in the material. But should for example in the case of round bars machined without cutting which are close to the surface coaxial compressive stresses are only partially reduced, so is the elongation the same to make less in the second step.
Fig. 1 is a stress-strain diagram for the Shown method according to the invention, wherein a linear to be straightened good Has internal stresses and different material strength in cross-section.
Fig. 2 is a stress-strain diagram for the method according to the invention to take, in the cross section of the initially differing longitudinal residual stresses A1 and K1 given are.
the upsetting of the leveling material in the intended first step of the Procedure is reached after reaching the respective elastic limit A2 and A3 or from K2 to K3.
Fig. 3 shows essentially the same diagram, with the Bauschinger effect Is taken into account. Is after plastic pressure forming of the material exposed to a tensile load + ⁇ , a flow or a begins Plasticization already at much lower stresses ⁇ , like this from the curved waveforms K3 to K4 and A3 in the direction of A4 in the diagram emerges.
P1, L1 and S1 were again determined using the Borehole method for an average residual hole depth of 1 mm.
the Results S1 show that the target material has extremely low residual stresses in Longitudinal direction.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Forging (AREA)

EP99890245A 1998-07-27 1999-07-21 Procédé de redressage linéaire Withdrawn EP0976469A3 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT128998		1998-07-27
AT128998A AT409230B (de)	1998-07-27	1998-07-27	Verfahren zum linearrichten

Publications (2)

Publication Number	Publication Date
EP0976469A2 true EP0976469A2 (fr)	2000-02-02
EP0976469A3 EP0976469A3 (fr)	2002-12-18

Family

ID=3510678

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99890245A Withdrawn EP0976469A3 (fr)	1998-07-27	1999-07-21	Procédé de redressage linéaire

Country Status (2)

Country	Link
EP (1)	EP0976469A3 (fr)
AT (1)	AT409230B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2013037999A1 (fr) *	2011-09-16	2013-03-21	Siemens Aktiengesellschaft	Aube de compresseur et son procédé de fabrication
CN106834639A (zh) *	2017-04-02	2017-06-13	首钢总公司	控制非调质高强螺栓钢高包辛格效应的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1527434A1 (de)	1963-03-19	1969-12-18	Truninger Ag	Streckmaschine zum Streckrichten von Streckgut,insbesondere Hohlprofilen aus Stahl
SU1148663A1 (ru)	1982-09-10	1985-04-07	Научно-исследовательский и опытно-конструкторский институт автоматизации черной металлургии	Способ правки длинномерного проката
SU1311807A1 (ru)	1985-04-30	1987-05-23	Украинский научно-исследовательский институт металлов	Способ правки проката
EP0234204A2 (fr)	1986-02-21	1987-09-02	Krupp Stahl AG	Procédé et dispositif pour dresser un rail du chemin de fer dans une dresseuse à rouleaux
EP0671983B1 (fr)	1992-12-02	1997-03-26	MANNESMANN Aktiengesellschaft	Procede et machine-outil lineaire travaillant le metal par formage pour le dressage de pieces en forme de barre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2945505A1 (de) *	1979-11-10	1981-05-21	Schloemann-Siemag AG, 4000 Düsseldorf	Richtmaschine fuer bleche und baender

1998
- 1998-07-27 AT AT128998A patent/AT409230B/de not_active IP Right Cessation
1999
- 1999-07-21 EP EP99890245A patent/EP0976469A3/fr not_active Withdrawn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1527434A1 (de)	1963-03-19	1969-12-18	Truninger Ag	Streckmaschine zum Streckrichten von Streckgut,insbesondere Hohlprofilen aus Stahl
SU1148663A1 (ru)	1982-09-10	1985-04-07	Научно-исследовательский и опытно-конструкторский институт автоматизации черной металлургии	Способ правки длинномерного проката
SU1311807A1 (ru)	1985-04-30	1987-05-23	Украинский научно-исследовательский институт металлов	Способ правки проката
EP0234204A2 (fr)	1986-02-21	1987-09-02	Krupp Stahl AG	Procédé et dispositif pour dresser un rail du chemin de fer dans une dresseuse à rouleaux
EP0671983B1 (fr)	1992-12-02	1997-03-26	MANNESMANN Aktiengesellschaft	Procede et machine-outil lineaire travaillant le metal par formage pour le dressage de pieces en forme de barre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2013037999A1 (fr) *	2011-09-16	2013-03-21	Siemens Aktiengesellschaft	Aube de compresseur et son procédé de fabrication
CN103797134A (zh) *	2011-09-16	2014-05-14	西门子公司	压缩机叶片及其制造方法
CN103797134B (zh) *	2011-09-16	2015-11-25	西门子公司	用于制造压缩机叶片的方法
US9234429B2 (en)	2011-09-16	2016-01-12	Siemens Aktiengesellschaft	Method for producing a compressor blade by forging and uniaxially stretching
CN106834639A (zh) *	2017-04-02	2017-06-13	首钢总公司	控制非调质高强螺栓钢高包辛格效应的方法

Also Published As

Publication number	Publication date
AT409230B (de)	2002-06-25
EP0976469A3 (fr)	2002-12-18
ATA128998A (de)	2001-11-15

Legal Events

Date	Code	Title	Description
1999-12-17	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
2000-02-02	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2000-02-02	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
2002-11-01	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
2002-12-18	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2002-12-18	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
2003-08-13	17P	Request for examination filed	Effective date: 20030616
2003-09-10	AKX	Designation fees paid	Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2003-11-14	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2004-08-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2004-10-13	18D	Application deemed to be withdrawn	Effective date: 20040406

Publication	Publication Date	Title
EP2313216B1 (fr)	2011-12-28	Procédé de fabrication d'un profilé laminé à froid présentant au moins un bord profilé épaissi
EP1181991A2 (fr)	2002-02-27	Procédé et dispositif pour le laminage flexible d'une bande métallique
DE1940341C3 (de)	1981-12-03	Verfahren und Einrichtung zum Herstellen von Metalleisten, insbesonder von rohrförmigen Schweißelektroden, aus einem Stabmaterial
DE69328835T2 (de)	2000-11-09	Kaltgeformte hochfeste stahlteile
DE3223346A1 (de)	1983-09-01	Verfahren zum richten von eisenbahnschienen und durch das verfahren hergestellte eisenbahnschienen
EP2049276B1 (fr)	2010-01-06	Dispositif et procédé de formage d'une pièce
DE2143784A1 (de)	1973-03-08	Verbindungsbolzen, insbesondere schraubenbolzen und verfahren zur herstellung desselben
EP0620059B1 (fr)	1997-03-05	Procédé pour fabriquer un fil métallique à section tronçonique
DE1912350A1 (de)	1970-12-03	Verfahren zum Walzen von Stahl-Flanschwerkstuecken sowie Walzengeruest zur Durchfuehrung dieses Verfahrens
WO1999022886A1 (fr)	1999-05-14	Procede de fabrication de profiles creux en nickel-titane
AT409230B (de)	2002-06-25	Verfahren zum linearrichten
EP3358021A1 (fr)	2018-08-08	Vis à haute résistance ayant une extrémité filetée moins dure
DE538635C (de)	1931-11-19	Verfahren zur Herstellung durchbrochener Metallgegenstaende
DE1433810B2 (de)	1970-10-15	Verfahren zur Verbesserung der Zugfestigkeit und der Streckgrenze von Stabstahl
DE60004094T2 (de)	2004-04-22	Kaltgeformte, flachgewalzte stahlprofile
DE19939860A1 (de)	2000-03-02	Verfahren zur Verbesserung der Planheit von Blechen
DE4233462C2 (de)	1997-04-03	Verfahren zur Erhöhung der Zugfestigkeit und der Zähigkeit von martensitischen Stahldrähten und Vorrichtung zur Durchführung des Verfahrens
DE3250083C2 (de)	1994-04-21	Gerichtete Eisenbahnschienen
DE60116885T2 (de)	2006-09-14	Verfahren zur herstellung eines geschlossenen profils
DE102006037091B3 (de)	2007-09-27	Vorrichtung und Verfahren zum Umformen eines Werkstücks
DE1111660B (de)	1961-07-27	Verfahren und Vorrichtung zum Aufbau eines dem Belastungs-spannungszustand entgegengerichteten inneren Eigenspannungszustandes in hochbeanspruchten Bauelementen aus Metallen durch plastische Verformung ihrer Oberflaeche
AT212122B (de)	1960-11-25	Verfahren und Vorrichtung zur Verbesserung der physikalischen Eigenschaften von Konstruktionselementen aus plastisch verformbarem Material
DE2935327A1 (de)	1980-11-13	Verfahren zur herstellung eines traegerrohstuecks fuer einen grossen h-traeger
AT248368B (de)	1966-07-25	Vorrichtung zum spanlosen Formen von strangförmigem Material, insbesondere von Bewehrungsstählen
EP4599959A1 (fr)	2025-08-13	Procédé de fabrication d'une vis