EP2319639A1 - Cast iron axle leg with moulded steel core - method for manufacturing the axle leg - Google Patents

Cast iron axle leg with moulded steel core - method for manufacturing the axle leg Download PDF

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Publication number
EP2319639A1
EP2319639A1 EP09175504A EP09175504A EP2319639A1 EP 2319639 A1 EP2319639 A1 EP 2319639A1 EP 09175504 A EP09175504 A EP 09175504A EP 09175504 A EP09175504 A EP 09175504A EP 2319639 A1 EP2319639 A1 EP 2319639A1
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EP
European Patent Office
Prior art keywords
steering knuckle
cast iron
steel pin
iron alloy
mpa
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.)
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EP09175504A
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German (de)
French (fr)
Inventor
Karl Seidinger
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 Automobilguss GmbH Germany
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Georg Fischer Automobilguss GmbH Germany
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.)
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Publication date
Application filed by Georg Fischer Automobilguss GmbH Germany filed Critical Georg Fischer Automobilguss GmbH Germany
Priority to EP09175504A priority Critical patent/EP2319639A1/en
Priority to BRPI1004725-5A priority patent/BRPI1004725A2/en
Priority to CN2010105504069A priority patent/CN102052385A/en
Priority to US12/942,602 priority patent/US20110109151A1/en
Priority to JP2010250659A priority patent/JP2011101899A/en
Publication of EP2319639A1 publication Critical patent/EP2319639A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0054—Casting in, on, or around objects which form part of the product rotors, stators for electrical motors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon

Definitions

  • the invention relates to a cast steering knuckle with a cast-in steel core (composite casting) and to a method for producing the steering knuckle.
  • the truck steering knuckles are formed as steel forged parts.
  • the pins serve to receive a wheel bearing, the wheel hub, the brake disc and the wheel.
  • the hinge assembly consists of two basic components, namely a base casting and a one-piece axis.
  • the one-piece axis is designed as a forging.
  • the advantage of steel forged stub axles consists in particular in the high strength associated with a relatively high elongation at break.
  • the disadvantages are the high weight, lack of design freedom of the designer in the shape as hollow body, undercuts, etc. which in turn lead to increased manufacturing and processing costs.
  • the object of the present invention is therefore to propose stub axles, which are less expensive to produce and have a lower weight at the required high strength requirements than the known stub axles.
  • the composite cast-iron knuckle according to the invention should be distinguished from overstressing by a higher deformation of the bearing journal.
  • the composite stub axle is characterized by the fact that it does not abruptly fail after damage (tear), but rather decelerates, combined with a relatively high deflection. Thus, the driver has the chance to notice the damage early and counteract a total failure.
  • the parts cast from nodular cast iron alloys preferably have high mechanical strengths of from 500 to 850 MPa, high yield strengths of from 350 to 550 MPa and simultaneously high toughness levels of up to 12%.
  • the nodular cast iron alloy according to a particular embodiment of the invention in addition to the main component Fe contains the non-iron constituents C, Si, P, Mg, Cr, Al, S, Cu and Mn with the usual impurities, according to the following examples:
  • the chemical composition is 3.34 wt.% C, 2.92 wt.% Si, 0.62 wt.% Cu, 0.17 wt.% Mn, 0.038 wt.% Mg, 0.025 wt.% P, 0.021 wt % Cr, 0.01% by weight Al, 0.001% by weight S radical Fe and the usual impurities.
  • the Spärolithenress is 400 spherulites per mm 2 .
  • the graphite content 9.7%.
  • the graphite mold according to DIN EN ISO 945 is 97.9% of the form VI.
  • the size distribution according to DIN EN ISO 945 is 45% of the size 8, 42% of the size 7 and 13% of the size 6.
  • the perlite content is 84%.
  • the Brinell hardness is 248 HB.
  • the chemical composition is 3.5 wt.% C, 2.65 wt.% Si, 0.77 wt.% Cu, 0.26 wt.% Mn, 0.038 wt.% Mg, 0.026 wt.% P, 0.029 wt % Cr, 0.004% by weight of Al, 0.001% by weight of S, balance Fe and the usual impurities.
  • Tensile strength R p 0.2 405 MPa
  • tensile strength Rm 639 MPa
  • elastic modulus E 165 to 170 kN / mm 2 .
  • the Brinell hardness is 238 HB.
  • the chemical composition is 3.43 wt% C, 3.38 wt% Si, 0.71 wt% Cu, 0.2 wt% Mn, 0.037 wt% Mg, 0.047 wt% P, 0.043 wt % Cr, 0.012% by weight Al, 0.004% by weight S and 0.0008% by weight B, remainder Fe and the usual impurities.
  • the Brinell hardness is 288 HB.
  • the number of spherulites in the microstructure was found to be 455 spherulites per mm 2 .
  • Fig. 1 shows a sectional view of a possible embodiment of an inventive axle stub 1 with the steel core 2 and the steel core cast around the casting 3.
  • the steel core 2 is made of a commercially available steel, the casting 3 of a ductile iron alloy.
  • the advantages associated with the invention are in particular that the stub axle can be made cheaper compared to the known forging solution. It is characterized by lower weight. In addition, the editing is greatly simplified.
  • the composite casting obtains an advantageous stress distribution (modulus of elasticity) and thus increases the service life of the bearing journal subjected to bending change.
  • the steel insert has a very positive influence on the cooling conditions and the microstructure of the cast material.
  • the result is a very fine-grained pearlite / ferrite structure with a high number of spherulites.
  • the outside of the steel insert can be coated before inserting.
  • the coating can be made by a chemical deposition, for example, a phosphating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vehicle Body Suspensions (AREA)
  • Heat Treatment Of Articles (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Steering Controls (AREA)

Abstract

The steering knuckle, which is formed as casting parts from a nodular cast iron alloy, comprises a steel pin (3) completely or concavely formed at axis region (2) of the knuckle in the inner region. The steel pin is obtained from commercial steel with high elongation. The nodular cast iron alloy has a high mechanical strength (500-850 MPa), high yield strength (350-550 MPa) and high toughness (12%). An independent claim is included for a process for manufacturing a steering knuckle.

Description

Beschreibungdescription

Die Erfindung betrifft einen Guss- Achsschenkel mit eingegossenen Stahlkern (Verbundguss) und ein Verfahren zur Herstellung des Achsschenkels.The invention relates to a cast steering knuckle with a cast-in steel core (composite casting) and to a method for producing the steering knuckle.

Im Stand der Technik sind die LKW- Achsschenkel als stahlgeschmiedete Teile ausgebildet. Die Zapfen dienen der Aufnahme eines Radlagers, der Radnabe, der Bremsscheibe und des Rades.In the prior art, the truck steering knuckles are formed as steel forged parts. The pins serve to receive a wheel bearing, the wheel hub, the brake disc and the wheel.

Aus der DE 2349731 sind ein Gelenkteil, insbesondere eine Vorderradaufhängung von Fahrzeugen, und ein Verfahren zu dessen Herstellung beschrieben. Die Gelenkanordnung besteht aus zwei Grundbauteilen, nämlich einem Grundgussstück und einer einstückigen Achse. Die einstückige Achse ist als Schmiedestück ausgebildet.From the DE 2349731 are a hinge part, in particular a front suspension of vehicles, and a method for its preparation described. The hinge assembly consists of two basic components, namely a base casting and a one-piece axis. The one-piece axis is designed as a forging.

Der Vorteil von stahlgeschmiedeten Achsschenkeln besteht insbesondere in der hohen Festigkeit verbunden mit einer relativ hohen Bruchdehnung, Die Nachteile liegen im hohen Gewicht, mangelnde gestalterische Freiheiten des Konstrukteurs in der Formgebung wie Hohlkörper, Hinterschnitte etc. die wiederum zu erhöhten Herstell - und Bearbeitungskosten führen.The advantage of steel forged stub axles consists in particular in the high strength associated with a relatively high elongation at break. The disadvantages are the high weight, lack of design freedom of the designer in the shape as hollow body, undercuts, etc. which in turn lead to increased manufacturing and processing costs.

Außerdem ist das Korrosionsverhalten bei Guss besser als bei StahlIn addition, the corrosion behavior is better with cast iron than with steel

Die Aufgabe der vorliegenden Erfindung liegt somit darin, Achsschenkel vorzuschlagen, die kostengünstiger herstellbar sind und ein geringeres Gewicht bei den geforderten hohen Festigkeitansprüchen haben, als die bekannten Achsschenkel.The object of the present invention is therefore to propose stub axles, which are less expensive to produce and have a lower weight at the required high strength requirements than the known stub axles.

Insbesondere soll sich der erfindungsgemässe Verbundguss - Achsschenkel bei einer Überbeanspruchung durch eine höhere Verformung des Lagerzapfens auszeichnen.In particular, the composite cast-iron knuckle according to the invention should be distinguished from overstressing by a higher deformation of the bearing journal.

Der Verbund-Achsschenkels zeichnet sich dadurch aus , dass er nach einer Schädigung (Anriss) nicht schlagartig, sondern verzögert, verbunden mit einer relativ hohen Auslenkung, versagt. Damit hat der Fahrer die Chance die Schädigung frühzeitig zu merken und einem Totalversagen entgegen zu wirken.The composite stub axle is characterized by the fact that it does not abruptly fail after damage (tear), but rather decelerates, combined with a relatively high deflection. Thus, the driver has the chance to notice the damage early and counteract a total failure.

Erfindungsgemäss wird die Aufgabe durch die kennzeichnenden Teile der Ansprüche 1 und 2 gelöst.According to the invention the object is achieved by the characterizing parts of claims 1 and 2.

Die aus Sphärogusslegierungen gegossenen Teile weisen vorzugsweise neben hohe mechanische Festigkeiten von 500 bis 850 MPa , hohe Streckgrenzen von 350 bis 550 MPa bei gleichzeitig hohen Zähigkeiten bis 12% auf.The parts cast from nodular cast iron alloys preferably have high mechanical strengths of from 500 to 850 MPa, high yield strengths of from 350 to 550 MPa and simultaneously high toughness levels of up to 12%.

Ferner enthält die Sphärogusslegierung nach einer besonderen Ausgestaltung der Erfindung neben dem Hauptanteil Fe die Nichteisenbestandteile C, Si, P, Mg, Cr, AI, S, Cu und Mn mit den üblichen Verunreinigungen, gemäss folgender Beispiele:Further, the nodular cast iron alloy according to a particular embodiment of the invention in addition to the main component Fe contains the non-iron constituents C, Si, P, Mg, Cr, Al, S, Cu and Mn with the usual impurities, according to the following examples:

Beispiel 1example 1

Die chemische Zusammensetzung beträgt 3,34 Gew.% C, 2,92 Gew.% Si, 0,62 Gew.% Cu, 0,17 Gew.% Mn, 0,038 Gew.% Mg, 0,025 Gew.% P, 0,021 Gew.% Cr, 0,01 Gew.% AI, 0,001 Gew.% S Rest Fe und den üblichen Verunreinigungen. Die Spärolithenzahl beträgt 400 Sphärolithen pro mm2 . Der Graphitgehalt 9,7 %. Die Graphitform nach DIN EN ISO 945 ist zu 97.9 % von der Form VI. Die Grössenverteilung nach DIN EN ISO 945 ist 45 % der Grösse 8, 42 % der Grösse 7 und 13 % der Grösse 6. Der Perlitgehalt beträgt 84 %. Die Brinellhärte beträgt 248 HB. Beim Zugversuch wurden folgende Werte festgestellt: Dehngrenze Rp0.2 = 474 MPa, Zugfestigkeit Rm = 778 MPa, Bruchdehnung A5 bis 11,4 % und Elastizitätsmodulus E = 165 bis 170 kN/mm2.The chemical composition is 3.34 wt.% C, 2.92 wt.% Si, 0.62 wt.% Cu, 0.17 wt.% Mn, 0.038 wt.% Mg, 0.025 wt.% P, 0.021 wt % Cr, 0.01% by weight Al, 0.001% by weight S radical Fe and the usual impurities. The Spärolithenzahl is 400 spherulites per mm 2 . The graphite content 9.7%. The graphite mold according to DIN EN ISO 945 is 97.9% of the form VI. The size distribution according to DIN EN ISO 945 is 45% of the size 8, 42% of the size 7 and 13% of the size 6. The perlite content is 84%. The Brinell hardness is 248 HB. Tensile strength R p 0.2 = 474 MPa, tensile strength Rm = 778 MPa, elongation at break A5 to 11.4% and modulus of elasticity E = 165 to 170 kN / mm 2 .

Beispiel 2Example 2

Die chemische Zusammensetzung beträgt 3,5 Gew.% C, 2,65 Gew.% Si, 0,77 Gew.% Cu, 0,26 Gew.% Mn, 0,038 Gew.% Mg, 0,026 Gew.% P, 0,029 Gew.% Cr, 0,004 Gew.% AI, 0,001 Gew.% S , Rest Fe und den üblichen Verunreinigungen. Beim Zugversuch wurden folgende Werte festgestellt: Dehngrenze Rp0.2 = 405 MPa, Zugfestigkeit Rm = 639 Mpa, Bruchdehnung A5 bis 9,6 % und Elastizitätsmodulus E = 165 bis 170 kN/mm2. Die Brinellhärte beträgt 238 HB.The chemical composition is 3.5 wt.% C, 2.65 wt.% Si, 0.77 wt.% Cu, 0.26 wt.% Mn, 0.038 wt.% Mg, 0.026 wt.% P, 0.029 wt % Cr, 0.004% by weight of Al, 0.001% by weight of S, balance Fe and the usual impurities. Tensile strength R p 0.2 = 405 MPa, tensile strength Rm = 639 MPa, elongation at break A5 to 9.6% and elastic modulus E = 165 to 170 kN / mm 2 . The Brinell hardness is 238 HB.

Beispiel 3Example 3

Die chemische Zusammensetzung beträgt 3,43 Gew.% C, 3,38 Gew.% Si, 0,71 Gew.% Cu, 0,2 Gew.% Mn, 0,037 Gew.% Mg, 0,047 Gew.% P, 0,043 Gew.% Cr, 0,012 Gew.% AI, 0,004 Gew.% S und 0,0008 Gew.% B, Rest Fe und den üblichen Verunreinigungen. Beim Zugversuch wurden folgende Werte festgestellt: Dehngrenze Rp 0.2 = 558 MPa, Zugfestigkeit Rm = 862 MPa und Bruchdehnung A5 bis 6,1 %. Die Brinellhärte beträgt 288 HB. Die Sphärolithenzahl im Mikrogefüge wurde zu 455 Sphärolithen pro mm2 ermittelt.The chemical composition is 3.43 wt% C, 3.38 wt% Si, 0.71 wt% Cu, 0.2 wt% Mn, 0.037 wt% Mg, 0.047 wt% P, 0.043 wt % Cr, 0.012% by weight Al, 0.004% by weight S and 0.0008% by weight B, remainder Fe and the usual impurities. Tensile strength R p 0.2 = 558 MPa, tensile strength Rm = 862 MPa and elongation at break A5 to 6.1%. The Brinell hardness is 288 HB. The number of spherulites in the microstructure was found to be 455 spherulites per mm 2 .

Ein Beispiel eines Achsschenkels ist in der einzigen Figur gezeigt.An example of a steering knuckle is shown in the single figure.

Fig. 1 zeigt eine Schnittzeichnung einer möglichen Ausführungsform eines erfindungsgemässen Achsschenkels 1 mit dem Stahlkern 2 und dem den Stahlkern umgossenen Gussteil 3. Der Stahlkern 2 besteht aus einem handelsüblichen Stahl, das Gussteil 3 aus einer Sphärogusslegierung. Fig. 1 shows a sectional view of a possible embodiment of an inventive axle stub 1 with the steel core 2 and the steel core cast around the casting 3. The steel core 2 is made of a commercially available steel, the casting 3 of a ductile iron alloy.

Die mit der Erfindung verbundenen Vorteile bestehen insbesondere darin, dass der Achsschenkel gegenüber der bekannten Schmiedelösung billiger hergestellt werden kann. Er zeichnet sich durch geringeres Gewicht aus. Darüber hinaus wird die Bearbeitung wesentlich vereinfacht.The advantages associated with the invention are in particular that the stub axle can be made cheaper compared to the known forging solution. It is characterized by lower weight. In addition, the editing is greatly simplified.

Durch die Kombination zweier Werkstoffe in einem Bauteil werden die Hauptvorteile des jeweiligen Einzelwerkstoffes im hochbeanspuchten Lagerzapfen optimal genutzt. Aussen hochfest - innen hohe DehnungBy combining two materials in one component, the main advantages of each individual material are optimally utilized in the highly stressed bearing journal. Outside high strength - inside high elongation

Der Verbundguß erwirkt eine vorteilhafte Spannungsverteilung ( E- Modul) und erhöht damit die Lebensdauer des auf Biegewechsel beanspruchten Lagerzapfens.The composite casting obtains an advantageous stress distribution (modulus of elasticity) and thus increases the service life of the bearing journal subjected to bending change.

Durch den Verbundguß kommt es bei Überbeanspruchung nicht zu einem plötzlichen, sondern zu einem verzögerten Bauteilversagen bei entsprechend hoher Verformung des Lagerzapfens. Dadurch besteht die Möglichkeit dass die Vorschädigung erkannt wird und es nicht zu einem totalen Versagen kommt.Due to the composite casting it comes in overuse not to a sudden, but to a delayed component failure with a correspondingly high deformation of the journal. This makes it possible that the previous damage is detected and it does not come to a total failure.

Der Stahleinsatz beeinflusst die Abkühlbedingungen und die Gefügeausbildung des Gusswerkstoffes sehr positiv . Es entsteht ein sehr feinkörniges Perlit/ Ferrit - gefüge mit hoher Sphärolitenzahl.The steel insert has a very positive influence on the cooling conditions and the microstructure of the cast material. The result is a very fine-grained pearlite / ferrite structure with a high number of spherulites.

Die Aussenseite des Stahleinsatzes kann vor dem Einlegen beschichtet werden. Die Beschichtung kann durch eine chemische Abscheidung beispielweise einer Phosphatierung vorgenommen sein.The outside of the steel insert can be coated before inserting. The coating can be made by a chemical deposition, for example, a phosphating.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Achsschenkeljournal
22
Stahlkernsteel core
33
Gussteilcasting

Claims (5)

Achsschenkels dadurch gekennzeichnet, dass der Achsschenkel (1) als Gussteil aus einer Sphärogusslegierung ausgebildet ist, wobei der Achsenbereich (2) des Achsschenkels (1) im inneren Bereich einen Stahlzapfen (3), voll oder hohl ausgeführt, aufweist.Achsschenkels characterized in that the steering knuckle (1) is designed as a casting of a nodular cast iron alloy, wherein the axis region (2) of the steering knuckle (1) in the inner region a steel pin (3), executed fully or hollow. Verfahren zur Herstellung des Achsschenkels nach Anspruch 1, dadurch gekennzeichnet, dass es folgende Verfahrensschritte aufweist • Herstellen eines Stahlzapfens • Einschiessen des Stahlzapfens in einen Sandkern • Einlegen des den Stahlzapfens enthaltenden Kernes in eine Sandgussform • Abgiessen der Gussform mittels einer Sphärogusslegierung • Auspacken und Reinigen des gegossenen Achsschenkels Method for producing the steering knuckle according to claim 1, characterized in that it comprises the following method steps • Making a steel pin • Engage the steel pin in a sand core • Insert the core containing the steel pin into a sand casting mold • Casting of the casting mold by means of a nodular cast iron alloy • Unpack and clean the cast axle stub Achsschenkels und Verfahren zur Herstellung des Achsschenkels nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stahlzapfen (3) aus einem handelsüblichen Stahl mit hoher Bruchdehnung besteht.Steering knuckle and method for producing the steering knuckle according to claim 1 or 2, characterized in that the steel pin (3) consists of a commercial steel with high elongation at break. Achsschenkel und Verfahren zur Herstellung des Achsschenkels nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, dass die Sphärogusslegierung eine hohe mechanische Festigkeit ( 500-850 MPa), eine hohe Streckgrenze (350-550 MPa) und gleichzeitig eine hohe Zähigkeit (bis 12%) aufweist.Steering knuckle and method for producing the steering knuckle according to one of claims 1, 2 or 3, characterized in that the ductile iron alloy has a high mechanical strength ( 500-850 MPa), a high yield strength (350-550 MPa) and at the same time a high toughness (to 12%) . Achsschenkel und Verfahren zur Herstellung des Achsschenkels nach Anspruch 4, dadurch gekennzeichnet, dass die Sphärogusslegierung die NichtEisenbestandteile C, Si, P, Mg, Cr, AI, S, Cu und Mn mit den üblichen Verunreinigungen enthält.Steering knuckle and method for producing the steering knuckle according to claim 4, characterized in that the nodular cast iron alloy contains the non-iron components C, Si, P, Mg, Cr, Al, S, Cu and Mn with the usual impurities.
EP09175504A 2009-11-10 2009-11-10 Cast iron axle leg with moulded steel core - method for manufacturing the axle leg Withdrawn EP2319639A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP09175504A EP2319639A1 (en) 2009-11-10 2009-11-10 Cast iron axle leg with moulded steel core - method for manufacturing the axle leg
BRPI1004725-5A BRPI1004725A2 (en) 2009-11-10 2010-11-09 stub axle with cast steel integrated core and process for stub axle manufacturing
CN2010105504069A CN102052385A (en) 2009-11-10 2010-11-09 Cast iron axle leg with moulded steel core - method for manufacturing the axle leg
US12/942,602 US20110109151A1 (en) 2009-11-10 2010-11-09 Cast axle stub with a cast-in steel core process for producing the axle stub
JP2010250659A JP2011101899A (en) 2009-11-10 2010-11-09 Cast axle stub with cast-in steel core, and process for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09175504A EP2319639A1 (en) 2009-11-10 2009-11-10 Cast iron axle leg with moulded steel core - method for manufacturing the axle leg

Publications (1)

Publication Number Publication Date
EP2319639A1 true EP2319639A1 (en) 2011-05-11

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EP09175504A Withdrawn EP2319639A1 (en) 2009-11-10 2009-11-10 Cast iron axle leg with moulded steel core - method for manufacturing the axle leg

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US (1) US20110109151A1 (en)
EP (1) EP2319639A1 (en)
JP (1) JP2011101899A (en)
CN (1) CN102052385A (en)
BR (1) BRPI1004725A2 (en)

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CN105149523A (en) * 2015-09-29 2015-12-16 昆山市昌坚铸造有限公司 Casting die and technology for blank of top plate for solar energy
CN107653845A (en) * 2017-11-16 2018-02-02 云南星禹水利设备有限责任公司 A kind of resistance to torsional axis of cast-type anti-vibration
US11028264B2 (en) 2019-08-05 2021-06-08 International Business Machines Corporation Polylysine polymers with antimicrobial and/or anticancer activity
CN112958757A (en) * 2021-01-20 2021-06-15 苏州鸿翼卫蓝新材科技有限公司 Preparation method of composite transmission shaft

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