DE746251C - Process for increasing the number of bends and twists of steel wires that have been spun in operation - Google Patents

Process for increasing the number of bends and twists of steel wires that have been spun in operation

Info

Publication number
DE746251C
DE746251C DEK161074A DEK0161074A DE746251C DE 746251 C DE746251 C DE 746251C DE K161074 A DEK161074 A DE K161074A DE K0161074 A DEK0161074 A DE K0161074A DE 746251 C DE746251 C DE 746251C
Authority
DE
Germany
Prior art keywords
application
wires
bends
bending
steel wires
Prior art date
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.)
Expired
Application number
DEK161074A
Other languages
German (de)
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.)
Kohle und Eisenforschung GmbH
Original Assignee
Kohle und Eisenforschung 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 Kohle und Eisenforschung GmbH filed Critical Kohle und Eisenforschung GmbH
Priority to DEK161074A priority Critical patent/DE746251C/en
Priority to NL104900A priority patent/NL57103C/en
Application granted granted Critical
Publication of DE746251C publication Critical patent/DE746251C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Wire Processing (AREA)

Description

Verfahren zur Erhöhung der Biege- und Verwindezahlen von im Betrieb versprödeten Stahldrähten Es ist bekannt, daß in kaltgezogenen Drähten nach einer gewissen Zeit, z. B. nach Lagern oder nach Betriebsbeanspruchung, die Biege- und vor allem die Verwindezahlen häufig stark abnehmen. Diese Änderungen der Eigenschaften werden beschleunigt, wenn die Drähte bei höherer Temperatur gelagert bzw. beansprucht worden sind. So können bereits die im Schacht auftretenden erhöhten Temperaturen diese Änderung bei Seildrähten beschleunigen. Die Abnahme der Biege- und insbesondere der Verwindezahlen hat eine größere Empfindlichkeit der Drähte gegen die im Betrieb auftretenden Beanspruchungen, z. B. im Förder- oder Kranbetrieb, zur Folge.Process for increasing the number of bends and twists in operation embrittled steel wires It is known that in cold drawn wires after a certain time, e.g. B. after storage or after operational stress, the bending and especially the number of twisting often strongly decrease. These changes in properties are accelerated when the wires are stored or stressed at higher temperatures have been. In this way, the increased temperatures occurring in the shaft can already be avoided accelerate this change in rope wires. The decrease in bending and in particular the number of twisting has a greater sensitivity of the wires to those in operation occurring stresses, e.g. B. in conveyor or crane operation, result.

Die Erfindung hat sich die Beseitigung dieser nachteiligen Erscheinung zur Aufgabe gestellt. Sie schlägt vor, die Drähte nach einer gewissen Zeit einem Richtprozeß, bei dem sie nach allen Seiten hin und her gebogen werden, zu unterwerfen.The invention aims to eliminate this disadvantageous phenomenon set as a task. She suggests turning the wires on after a period of time Straightening process, in which they are bent back and forth in all directions, to submit.

An sich ist es bekannt, bei Drähten, Blechen, Bändern u. dgl. durch Hinundherbiegen (Richten) innere Spannungen auszugleichen, jedoch ist bisher nicht vorgeschlagen worden, Drähte oder Seile, die bereits in Betrieb gewesen sind, in gleicher Weise zu behandeln, um die durch den bisherigen Gebrauch aufgetretene Versprödung wieder zu beseitigen und ohne Verringerung der Zugfestigkeit die Biege- und Verwindezahlen wieder zu erhöhen.It is known per se to pass through wires, sheets, strips and the like Bending back and forth (straightening) to compensate for internal tensions, however, has not yet been done it has been suggested to put wires or ropes that have already been in use in to be treated in the same way in order to avoid the embrittlement caused by previous use to eliminate again and without reducing the tensile strength the bending and twisting numbers to increase again.

Zur Erläuterung des Verfahrens nach der Erfindung sind umstehend einige Beispiele angeführt und in einer Vergleichstabelle gegenübergestellt.To explain the method according to the invention are some below Examples are given and compared in a comparison table.

Durch künstliches Altern (Anlassen auf ,5o°) sind bei dem blanken Draht von 2,8 mm Dicke die Verwindezahlen so stark erniedrigt, daß im praktischen Betriebe eine weitere Verwendung des Drahtes nicht zulässig erscheint. Durch Richten, d. h. durch allseitiges Hinundherbiegen des Drahtes. wurden aber etwa die Biege- und Verwindezahlen und dadurch die ursprüngliche Zähigkeit des Ausgangsdrahtes Nr. i wieder erreicht. Etwa das gleiche Verhalten liegt bei dem verzinkten Draht vor. Auch hier wurden durch nachträgliches Richten die Verwindezahlen des künstlich gealterten Drahtes N r. 5 wieder auf die Werte des Ausgangszustandes gebracht. Lfd. Dicke Zug Ver- Art des Drahtes Behandlung festigkeit Biegungen Nr. mm kg/- windüngen 1 2,8 Anlieferungszustand 177 14-16 36-39 2 2,8 Anlieferungszustand 182 1o-12 3--1o blank ........ i Std. bei 15o' an- gelassen 3 _ 2,8 wie 2, dann hin und 18o 1d-15 29-34 i her gebogen 4 2,0 Anlieferungszustand 170 7-8 18-25 5 2,0 Anlieferungszustand 170 5-6 3-1o verzinkt ...... 1 Std. bei 15o ° an- gelassen 6 2,0 wie 5, dann hin und 170 7-8 18-2f1 her gebogen Artificial aging (tempering to .50 °) reduces the number of twisting of the bare wire with a thickness of 2.8 mm to such an extent that further use of the wire does not appear to be permissible in practical operation. By straightening, that is, by bending the wire back and forth on all sides. however, the number of bends and twists and thus the original toughness of the starting wire no. i have been achieved again. The behavior of the galvanized wire is roughly the same. Here, too, the number of twisting of the artificially aged wire no. 5 brought back to the values of the initial state. Serial Thick train Type of wire treatment strength bends No. mm kg / - turns 1 2.8 Delivery condition 177 14-16 36-39 2 2.8 Delivery condition 182 1o-12 3--1o blank ........ i hrs. at 15o 'an- calmly 3 _ 2.8 like 2, then there and 18o 1d-15 29-34 i bent forward 4 2.0 Delivery condition 170 7-8 18-25 5 2.0 Delivery condition 170 5-6 3-1o galvanized ...... 1 hour at 15o ° calmly 6 2,0 like 5, then there and 170 7-8 18-2f1 bent forward

Claims (1)

PATENTANSPRÜCHE: i. Anwendung des Verfahrens. 4Y'erkstoffe durch Hinundherbiegen zu richten, auf kaltgezogene, nach längerer Betriebszeit spröde gewordene Stahldrähte zur Erhöhung der Biege- und Verwindezahlen derselben ohne Verringerung der Zugfestigkeit. a. Anwendung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß die Behandlung in bestimmten Zeitabständen wiederholt wird. 3. .Anwendung des Verfahrens nach Anspruch i und 2 auf Drähte im Seilverband, z. B. bei Förder- und Kranseilen. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschriften .... N r. 4o6 448, 518 6o;.PATENT CLAIMS: i. Application of the procedure. To straighten materials by bending them back and forth on cold-drawn steel wires that have become brittle after a long period of operation in order to increase the number of bending and twisting of the same without reducing the tensile strength. a. Application of the method according to claim i, characterized in that the treatment is repeated at certain time intervals. 3. .Application of the method according to claim i and 2 on wires in the rope association, z. B. for conveyor and crane ropes. To distinguish the subject of the application from the state of the art, the following publications were taken into account in the granting procedure: German patents .... N o. 4o6 448, 518 6o ;.
DEK161074A 1941-05-13 1941-05-13 Process for increasing the number of bends and twists of steel wires that have been spun in operation Expired DE746251C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEK161074A DE746251C (en) 1941-05-13 1941-05-13 Process for increasing the number of bends and twists of steel wires that have been spun in operation
NL104900A NL57103C (en) 1941-05-13 1942-02-25 Method of extending the use of cold drawn wires, e.g. in cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK161074A DE746251C (en) 1941-05-13 1941-05-13 Process for increasing the number of bends and twists of steel wires that have been spun in operation

Publications (1)

Publication Number Publication Date
DE746251C true DE746251C (en) 1945-01-08

Family

ID=7254268

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK161074A Expired DE746251C (en) 1941-05-13 1941-05-13 Process for increasing the number of bends and twists of steel wires that have been spun in operation

Country Status (2)

Country Link
DE (1) DE746251C (en)
NL (1) NL57103C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024653C1 (en) * 1990-08-03 1991-07-25 Hanse-Montan Hanseatische Montanhandelsges. M.B.H., 2103 Hamburg, De

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE406448C (en) * 1923-02-18 1924-11-24 Franz Zachhuber Method and device for the pretreatment of metal strips, which are used in particular as strip rolls in tools according to patent 339359
DE518607C (en) * 1924-09-17 1931-02-18 Budd Edward G Mfg Co Process for cold processing of sheet metal in order to prevent the development of tensile stresses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE406448C (en) * 1923-02-18 1924-11-24 Franz Zachhuber Method and device for the pretreatment of metal strips, which are used in particular as strip rolls in tools according to patent 339359
DE518607C (en) * 1924-09-17 1931-02-18 Budd Edward G Mfg Co Process for cold processing of sheet metal in order to prevent the development of tensile stresses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024653C1 (en) * 1990-08-03 1991-07-25 Hanse-Montan Hanseatische Montanhandelsges. M.B.H., 2103 Hamburg, De

Also Published As

Publication number Publication date
NL57103C (en) 1946-03-15

Similar Documents

Publication Publication Date Title
DE746251C (en) Process for increasing the number of bends and twists of steel wires that have been spun in operation
DE712922C (en) Magnesium alloy
DE545166C (en) Process for the production of age-resistant iron or steel
DE2929623A1 (en) FINELINE WIRE FROM AN ALUMINUM ALLOY
EP0306609A3 (en) Process for producing a half-finished or finished product from single-phase martensitic high alloy chromium steel by hot and/or cold forming
DE765294C (en) Process for cold rolling silicon steel
DE634533C (en) Process for rolling sheet metal, in particular dynamo and transformer sheets, from silicon steel blocks
DE972174C (en) Anchoring elements for artificial teeth
DE880453C (en) Process for avoiding crack formation on rolled sections made of Thomasstahl
DE765739C (en) Twisted spring, especially for high, sudden loads
DE544135C (en) Process for thermal annealing of aluminum alloys
DE3030598C2 (en) Process for the production of pipes resistant to stress corrosion cracking
DE609906C (en) Process for the production of springs with increased service life for upholstered furniture
DE690393C (en) e Concrete reinforcement made of normalized mild steel wires with 0.5 to 0.8% C, 70 to 111 kg / mm strength and 12 to 17% elongation
CH341442A (en) Process for the production of shafts provided with bearing points for point bearings in apparatus and instruments
DE311366C (en)
AT241944B (en) Process for the production of twist-free barbed wire
DE767882C (en) Steel wire for steel string concrete
AT138885B (en) Molding, e.g. B. Dental post made of three metallic layers.
AT157296B (en) Reinforcement insert for reinforced concrete bodies.
AT114703B (en) Method and device for producing tension-free wire ropes from round wire strands.
AT220179B (en) Process for the production of steel wire and strip steel with high elastic properties
DE914670C (en) Method of making a twisted non-circular concrete reinforcing bar
DE102022000152A1 (en) Procedures for reducing the incidence of infection in a pandemic
DE1212571B (en) Process for work hardening reinforcing steel