DE873148C - Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting - Google Patents

Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting

Info

Publication number
DE873148C
DE873148C DEA1957D DEA0001957D DE873148C DE 873148 C DE873148 C DE 873148C DE A1957 D DEA1957 D DE A1957D DE A0001957 D DEA0001957 D DE A0001957D DE 873148 C DE873148 C DE 873148C
Authority
DE
Germany
Prior art keywords
cross
ring
sectional part
production
centrifugal casting
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
DEA1957D
Other languages
German (de)
Inventor
Edwin Schuetz
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.)
Oederlin and Cie AG
Original Assignee
Oederlin and Cie 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.)
Filing date
Publication date
Application filed by Oederlin and Cie AG filed Critical Oederlin and Cie AG
Priority to DEA1957D priority Critical patent/DE873148C/en
Application granted granted Critical
Publication of DE873148C publication Critical patent/DE873148C/en
Expired legal-status Critical Current

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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working

Description

Verfahren zur Herstellung von Metallstangen durch Verformen von im Schleudergußverfahren hergestellten Metallgußringen Es ist bekannt, in Schmiedestücken zu erwartende urigünstige Eigenspannungen durch entgegengesetzt gerichtete Vorspannungen unschädlich zu machen. Ferner ist bekannt, bei Kolbenringen die Innenseite durch Hämmern zu verdichten, um dadurch die Flächenpressung an der Außenseite zu vergrößern und gleichbleibender -zwecks Erreichung einer längeren Gebrauchsdauer zu gestalten. Es hat sich gezeigt, daß die Verdichtung der Innenseite bei Schleudergußringen, die als Ausgangsmaterial für gerade Stangen dienen, mit Vorteil auch zum Ausgleich der durch das Geraderichten des Ringes bedingten Spannungen Verwendung finden kann.Process for the production of metal bars by deforming im Cast metal rings produced by centrifugal casting are known in forgings Reasonable residual stresses to be expected due to oppositely directed prestresses to render harmless. It is also known to pass through the inside of piston rings Hammer to compact in order to increase the surface pressure on the outside and constant - to achieve a longer service life. It has been shown that the compression of the inside of centrifugal cast rings, which serve as the starting material for straight bars, advantageously also for compensation the tensions caused by straightening the ring can be used.

ach dem erfindungsgemäßen Verfahren zur Herstellung von 'Metallstangen durch Verformen von im Schleudergießverfahren hergestellten Metallgußringen wird mir der nach der Ringinnenseite des Rohlings liegende Querschnittsteil vor dem Umformen des Ringes zur geraden Stange durch Schläge, Pressen oder Walzen verdichtet, während der nach außen liegende Querschnittsteil im wesentlichen in seiner Dichte unverändert bleibt, derart, daß bei der nach der Verdichtung erfolgenden Umformung des Ringes zur geraden Stange ein Ausgleich zwischen der größeren Außenumfangslänge ohne verdichteten Querschnittsteil und der kleineren Innenumfangslänge mit verdichtetem Querschnittsteil stattfindet, wobei nach der Umformung zur geraden Stange der Spannungszustand überall im ganzen Querschnitt der Stange wieder annähernd der gleiche ist.after the method according to the invention for the production of 'metal rods by deforming cast metal rings produced in the centrifugal casting process me the cross-sectional part lying after the inside of the ring of the blank before forming the ring is compacted to a straight bar by hitting, pressing or rolling, while the outwardly lying cross-sectional part essentially unchanged in its density remains in such a way that during the deformation of the ring which takes place after compression to the straight rod a compensation between the larger outer circumference length without compressed Cross-sectional part and the smaller inner circumferential length with compressed cross-sectional part takes place, whereby after the deformation to a straight bar the state of tension is everywhere is again approximately the same in the entire cross-section of the rod.

Nach dem erfindungsgemäßen Verfahren wird in einer bekannten Schleudergießform ein ringförmiger Rohling von nach dem Fertigprofil der Stange ge- @wähltem, angenähertem Querschnitt hergestellt, wobei auf der Innenseite des Ringes ein über das fertige Profil vorstehender Einguß am Ring angeordnet ist und mitgegossen wird. Dieser Einguß wird bei der Bearbeitung vom erstarrten Ring auf einer Drehbank od. dgl. abgestochen und entfernt.According to the method according to the invention, in a known centrifugal casting mold an annular blank made after the finished profile of the rod @ chose, approximate cross-section made, with an over on the inside of the ring the finished profile projecting sprue is arranged on the ring and is cast along with it. This sprue is od when machining the solidified ring on a lathe. Like. Teared off and removed.

Der Ringinnenumfang ist erheblich kürzer als der Ringaußenumfang, während bei der geraden Stange alle Längen gleich sind. Wird nun bei größeren Querschnitten der Ring zur geraden Stange aufgebogen, so entstehen auf der Innenseite leicht Risse, die durch die verschieden großen Längen des Ringinnen- und Außenumfangs bedingt sind und die Stange zur Weiterverarbeitung unbrauchbar machen. Dieser Nachteil wird durch das neue Verfahren vermieden, denn durch die Verdichtung der Ringinnenseite mit kleinem Umfang gegenüber der unverdichteten Ringaußenseite mit großem Umfang wird zwischen den verschieden großen Längen ein Ausgleich geschaffen, derart, daß in dem Querschnitt des zur geraden Stange umgeformten Ringes wieder in allen Querschnittsteilen angenähert die gleichen Spannungen vorhanden sind.The inner circumference of the ring is considerably shorter than the outer circumference of the ring, while with the straight bar all lengths are the same. Is now used for larger cross-sections if the ring is bent up to a straight bar, cracks easily appear on the inside, caused by the different lengths of the inner and outer circumference of the ring and make the rod unusable for further processing. This disadvantage will Avoided by the new process because of the compression of the inside of the ring with a small circumference compared to the uncompacted outer side of the ring with a large circumference a balance is created between the different lengths in such a way that in the cross-section of the ring shaped into a straight bar again in all cross-sectional parts approximately the same voltages are present.

Das Verdichten kann durch beliebige Mittel erfolgen. Beispielsweise kann dasselbe durch einseitige Druckanwendungen, wie Hämmern, Pressen oder Walzen, erfolgen, wonach das Umformen des Ringes zur geraden Stange in kaltem oder erwärmtem Zustand erfolgt, nachdem der Ring an wenigstens einer Stelle aufgeschnitten wurde. Logischerweise darf hierbei die Erwärmung des Ringes nicht so weit gehen, daß das Material weich oder plastisch wird, weil bei zu starker Erwärmung die einseitige Verdichtung im Querschnitt verschwinden würde.The compaction can be done by any means. For example can do the same with one-sided printing applications such as hammering, pressing or rolling, take place, after which the forming of the ring into a straight bar in cold or heated State occurs after the ring has been cut open in at least one place. Logically, the heating of the ring must not go so far that that Material becomes soft or plastic, because if it is heated too much, the one-sided Compression in the cross-section would disappear.

Claims (1)

PATENTANSPRLTGH: Verfahren zur Herstellung von Metallstangen durch Verformen von im Schleudergießverfahren hergestellten Metallgußringen, dadurch gekennzeichnet, daß der nach der Ringinnenseite des Rohlings liegende Querschnittsteil vor dem Umformen des Ringes zur geraden Stange durch Schläge, Pressen oder Walzen verdichtet wird, während der nach außen liegende Querschnittsteil im wesentlichen in seiner Dichte unverändert bleibt, derart, daß bei der nach der Verdichtung erfolgenden Umformung des Ringes zur geraden Stange ein Ausgleich zwischen der größeren Außenumfangslänge ohne verdichteten Querschnittsteil und der kleineren Innenumfangslänge mit verdichtetem Querschnittsteil stattfindet, wobei nach der Umformung zur geraden Stange der Spannungszustand überall im ganzen Querschnitt der Stange wieder annähernd der gleiche ist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 631 004, 651 871; britische Patentschriften N r. 280 280, 372 439, 373 324; USA.-Patentschriften Nr. 1 515 953, 1 665 700, 1 go8 169, 1969 623, 1 993 774, 2 036 40z, . 2 055 174 z 005 338, 2 o66 521; Stahl und Eisen, 1929, Nr. 13, S. 434; VDI-Zeitschrift 1931, S. I534PATENTANSPRLTGH: Process for the production of metal rods by deforming cast metal rings produced in the centrifugal casting process, characterized in that the cross-sectional part lying on the inside of the ring of the blank is compressed by hitting, pressing or rolling before the ring is formed into a straight rod, while the cross-sectional part lying on the outside remains essentially unchanged in its density, such that when the ring is formed into a straight rod after compression, a balance takes place between the larger outer circumferential length without a compressed cross-sectional part and the smaller inner circumferential length with a compressed cross-sectional part, the stress state after the transformation into a straight rod is again approximately the same throughout the entire cross-section of the rod. Cited publications: German Patent Specifications No. 631 004, 651 871; British patents no. 280 280, 372 439, 373 324; USA. Patent Nos. 1,515,953, 1,665,700, 1 GO8 169, 1,969,623, 1,993,774, 2,036 40z. 2 0 55 174 z 0 05 338, 2 o66 521; Stahl and Eisen, 1929, No. 13, p. 434; VDI magazine 1931, p. I534
DEA1957D 1938-01-25 1938-01-25 Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting Expired DE873148C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA1957D DE873148C (en) 1938-01-25 1938-01-25 Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA1957D DE873148C (en) 1938-01-25 1938-01-25 Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting

Publications (1)

Publication Number Publication Date
DE873148C true DE873148C (en) 1953-04-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEA1957D Expired DE873148C (en) 1938-01-25 1938-01-25 Process for the production of metal rods by deforming metal cast rings produced by centrifugal casting

Country Status (1)

Country Link
DE (1) DE873148C (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515953A (en) * 1923-04-28 1924-11-18 Junghans Siegfried Centrifugal casting apparatus
GB280280A (en) * 1926-08-11 1927-11-11 Brown David & Sons Ltd Improvements in centrifugal machines for casting metal
US1665700A (en) * 1928-04-10 Centbieugal castikta
GB372439A (en) * 1931-02-20 1932-05-12 Brown David & Sons Ltd Improvements in or relating to machines for the centrifugal casting of metals
GB373324A (en) * 1931-03-20 1932-05-26 Craven Brothers Manchester Ltd Improvements in centrifugal machines for casting metals
US1908169A (en) * 1931-09-18 1933-05-09 Naugle & Townsend Inc Massive ring manufacture
US1969623A (en) * 1933-06-29 1934-08-07 Oubridge William Arthur Centrifugal casting machine
US1993774A (en) * 1932-01-18 1935-03-12 Bats Jean Hubert Louis De Centrifugal casting of carbide and like materials
US2005338A (en) * 1931-12-14 1935-06-18 Superior Steel Corp Making composite ingots
US2036401A (en) * 1933-07-15 1936-04-07 Francis B Douglass Centrifugal casting machine
DE631004C (en) * 1931-09-18 1936-06-12 Rotary Steel Company Process for producing centrifugally cast rings
US2055171A (en) * 1934-02-17 1936-09-22 Karl F Dailey Casting trimming
US2066521A (en) * 1934-02-17 1937-01-05 Karl F Dailey Centrifugal casting machine
DE651871C (en) * 1933-08-05 1937-10-21 Paul Bernhardt Method and device for the production of long objects of branched cross-section, such as rails, carriers and the like. Like., By casting as a spiral using a horizontal centrifugal drum

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665700A (en) * 1928-04-10 Centbieugal castikta
US1515953A (en) * 1923-04-28 1924-11-18 Junghans Siegfried Centrifugal casting apparatus
GB280280A (en) * 1926-08-11 1927-11-11 Brown David & Sons Ltd Improvements in centrifugal machines for casting metal
GB372439A (en) * 1931-02-20 1932-05-12 Brown David & Sons Ltd Improvements in or relating to machines for the centrifugal casting of metals
GB373324A (en) * 1931-03-20 1932-05-26 Craven Brothers Manchester Ltd Improvements in centrifugal machines for casting metals
DE631004C (en) * 1931-09-18 1936-06-12 Rotary Steel Company Process for producing centrifugally cast rings
US1908169A (en) * 1931-09-18 1933-05-09 Naugle & Townsend Inc Massive ring manufacture
US2005338A (en) * 1931-12-14 1935-06-18 Superior Steel Corp Making composite ingots
US1993774A (en) * 1932-01-18 1935-03-12 Bats Jean Hubert Louis De Centrifugal casting of carbide and like materials
US1969623A (en) * 1933-06-29 1934-08-07 Oubridge William Arthur Centrifugal casting machine
US2036401A (en) * 1933-07-15 1936-04-07 Francis B Douglass Centrifugal casting machine
DE651871C (en) * 1933-08-05 1937-10-21 Paul Bernhardt Method and device for the production of long objects of branched cross-section, such as rails, carriers and the like. Like., By casting as a spiral using a horizontal centrifugal drum
US2055171A (en) * 1934-02-17 1936-09-22 Karl F Dailey Casting trimming
US2066521A (en) * 1934-02-17 1937-01-05 Karl F Dailey Centrifugal casting machine

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