IT9019968A1 - PROCEDURE FOR OBTAINING A CONTINUOUS METALLURGIC LINK BETWEEN CYLINDER BARRELS ID THE JET CONSTITUTING THE BASE OF AN INTERNAL COMBUSTION ENGINE - Google Patents
PROCEDURE FOR OBTAINING A CONTINUOUS METALLURGIC LINK BETWEEN CYLINDER BARRELS ID THE JET CONSTITUTING THE BASE OF AN INTERNAL COMBUSTION ENGINEInfo
- Publication number
- IT9019968A1 IT9019968A1 IT019968A IT1996890A IT9019968A1 IT 9019968 A1 IT9019968 A1 IT 9019968A1 IT 019968 A IT019968 A IT 019968A IT 1996890 A IT1996890 A IT 1996890A IT 9019968 A1 IT9019968 A1 IT 9019968A1
- Authority
- IT
- Italy
- Prior art keywords
- process according
- barrel
- casting
- deposition
- aluminum
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 24
- 238000000151 deposition Methods 0.000 claims abstract description 10
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 claims description 6
- 238000001764 infiltration Methods 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004663 powder metallurgy Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims description 2
- 238000004512 die casting Methods 0.000 claims description 2
- 238000004070 electrodeposition Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229910052762 osmium Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000009716 squeeze casting Methods 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 238000002207 thermal evaporation Methods 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 238000005234 chemical deposition Methods 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 238000001465 metallisation Methods 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 150000002739 metals Chemical class 0.000 abstract description 2
- 239000010931 gold Substances 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 229910000676 Si alloy Inorganic materials 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000006023 eutectic alloy Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
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- 238000005289 physical deposition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
-
- 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
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/004—Cylinder liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F2007/009—Hypereutectic aluminum, e.g. aluminum alloys with high SI content
Abstract
Description
Descrizione Description
La presente invenzione riguarda un procedimento per ottenere un legame metallurgico continuo fra le canne dei cilindri ed il getto costituente il basamento di un motore a combustione interna. In un motore a combustione interna ogni pistone, in lega di alluminio, scorre con precisione in una cavità cilindrica del basamento del motore, generalmente in ghisa, ma che può essere ottenuto da un getto pure in lega di alluminio. The present invention relates to a process for obtaining a continuous metallurgical bond between the cylinder liners and the jet constituting the base of an internal combustion engine. In an internal combustion engine each piston, made of aluminum alloy, slides precisely in a cylindrical cavity of the engine block, generally made of cast iron, but which can also be obtained from an aluminum alloy casting.
La precisione di tale scorrimento è garantita da segmenti o fasce elastiche in acciaio, o in ghisa, poste attorno al pistone. Particolarmente nei basamenti in lega di alluminio, l'attrito delle fasce sulle pareti interne del cilindro, causano usura di queste e, nel tempo, tale usura diminuisce la precisione con conseguente abbassamento della efficienza del motore. The precision of this sliding is guaranteed by steel or cast iron piston rings or rings placed around the piston. Particularly in the aluminum alloy crankcases, the friction of the bands on the internal walls of the cylinder causes wear of these and, over time, this wear decreases the precision with consequent lowering of the engine efficiency.
Allo scopo di ovviare a questo inconveniente, si ricorre all'inserimento nella cavità dei cilindri di canne in materiale ad alta resistenza all'usura, ad esempio acciaio od altre leghe di alluminio. In order to obviate this drawback, the insertion into the cavity of the cylinders is made of liners made of highly wear-resistant material, for example steel or other aluminum alloys.
Queste canne sono inserite nel basamento del motore, dopo la sua fabbricazione per colata, mediante calettatura a caldo o, durante la colata stessa, ponendo le canne come inserti nello stampo in colata. In ambedue i casi l'accoppiamento fra la canna ed il basamento per afferraggio meccanico senza continuità di materiale e ciò può procurare inconvenienti nel raffreddamento della superficie interna dei cilindri per effetto di scarsa conducibilità termica dovuta alla discontinuità del materiale. Inoltre, per effetto di tale discontinuità e della differenza fra i coefficienti di dilazione termica dei diversi These rods are inserted into the engine crankcase, after its manufacture by casting, by hot shrinking or, during the casting itself, by placing the rods as inserts in the casting mold. In both cases the coupling between the barrel and the base by mechanical gripping without continuity of material and this can cause drawbacks in the cooling of the internal surface of the cylinders due to poor thermal conductivity due to the discontinuity of the material. Furthermore, due to this discontinuity and the difference between the thermal expansion coefficients of the different ones
materiali, nel frattempo, a seguito di ripetuti cicli termici, viene a diminuire l'aderenza e l'aggancio meccanico fra il basamento e la canna con loro conseguente distacco e movimenti reciproci provocando, per effetto di insufficiente raffreddamento, un rapido deterioramento della superficie interna della canna. material, in the meantime, following repeated thermal cycles, the adhesion and mechanical coupling between the crankcase and the barrel decreases with their consequent detachment and reciprocal movements causing, due to insufficient cooling, a rapid deterioration of the internal surface of the barrel.
E' stato ora da noi trovato che mediante un adatto trattamento superficiale sulle canne dei cilindri si può ottenere un forte legame metallurgico fra le stesse canne ed il getto costituente il basamento di un motore a combustione interna. It has now been found by us that by means of a suitable surface treatment on the cylinder liners it is possible to obtain a strong metallurgical bond between the same liners and the jet constituting the base of an internal combustion engine.
In particolare il procedimento oggetto della presente invenzione garantisce che vengano soddisfatte le esigenze classiche delle operazioni di saldatura: rimozione delle impurezze ed ossidi superficiali, intimo contatto e coalescenza dei materiali da unire. In particular, the process object of the present invention ensures that the classic requirements of the welding operations are met: removal of surface impurities and oxides, intimate contact and coalescence of the materials to be joined.
Tuttavia questo tipo di saldatura si differenzia moltissimo da altri metodi per il fatto che non si richiede nessuna sorgente esterna di energia (ad esempio calore, ultrasuoni, etc.) e la saldatura avviene nel corso dell’effettuazione del getto. Inoltre metalli non facilmente accoppiabili mediante altre tecniche possono essere legati mediante tale tipo di saldatura. However, this type of welding differs greatly from other methods in that no external source of energy is required (for example heat, ultrasound, etc.) and the welding takes place during the casting. Furthermore, metals not easily coupled by other techniques can be bonded by this type of welding.
Il procedimento, oggetto della presente invenzione, per ottenere un legame metallurgico continuo tra canne dei cilindri ed il getto costituente il basamento di un motore a combustione interna di materiale diverso rispetto alle canne, comprende l'effettuare un trattamento superficiale su dette canne mediante deposizione fisica, chimica od elettrochimica sulla superficie esterna della canna di uno strato sottile di un metallo diverso da quelli contenuti nei materiali della canna e del getto stesso in grado di aumentare la bagnabilità ed il coefficiente di trasferimento di calore tra la lega del getto ed il materiale della canna ed il colare attorno alla canna stessa, posizionata entro uno stampo, il metallo o la lega metallica di cui è costituito il basamento. The process, object of the present invention, for obtaining a continuous metallurgical bond between the cylinder liners and the jet constituting the base of an internal combustion engine made of a material different from the liners, comprises carrying out a surface treatment on said liners by means of physical deposition , chemical or electrochemical on the external surface of the barrel of a thin layer of a metal different from those contained in the materials of the barrel and of the casting itself, capable of increasing the wettability and the heat transfer coefficient between the alloy of the casting and the material of the casting. barrel and the pouring around the barrel itself, positioned within a mold, the metal or metal alloy of which the base is made.
La canna ed il getto possono essere costituiti da alluminio o magnesio o da leghe di alluminio o di magnesio: devono essere però di composizione diversa l'una dall'altro. The barrel and the cast can be made of aluminum or magnesium or aluminum or magnesium alloys: however, they must be of different composition from each other.
La canna può essere anche un materiale composito avente come matrice metallica alluminio o magnesio o leghe di alluminio o magnesio: tale tipo di materiale è costituito da una fase metallica (o di lega metallica), che circonda e lega altre fasi, che costituiscono il rinforzo (polveri o fibre ceramiche). The barrel can also be a composite material having aluminum or magnesium metal matrix or aluminum or magnesium alloys: this type of material consists of a metal phase (or metal alloy), which surrounds and binds other phases, which make up the reinforcement (powders or ceramic fibers).
Il rinforzo possiede resistenza e durezza elevate e su di esso vengono trasferite le sollecitazioni alle quali viene sottoposta la matrice, che, d'altro canto, deve possedere delle idonee caratteristiche in funzione del tipo di applicazione. Il rinforzo può essere costituito da fibre cera¬ The reinforcement has high strength and hardness and the stresses to which the matrix is subjected are transferred onto it, which, on the other hand, must have suitable characteristics according to the type of application. The reinforcement can consist of wax fibers
I metodi di preparazione dei compositi possono essere i seguenti: The methods of preparation of composites can be the following:
Dispersione del rinforzo su matrice fusa Dispersione del rinforzo su matrice parzialmente solida Dispersion of the reinforcement on a cast matrix Dispersion of the reinforcement on a partially solid matrix
Metallurgia delle polveri Powder metallurgy
Metallurgia delle fibre Fiber metallurgy
Compattazione di strati Compaction of layers
Infiltrazione Infiltration
II materiale composito può essere ottenuto direttamente oppure mediante successiva lavorazione meccanica. The composite material can be obtained directly or by subsequent mechanical processing.
Il metallo di strato sottile, preferibilmente compreso fra 10 e 100 nm, da depositare sulla superficie del materiale metallico o composito a matrice metallica, che deve essere diverso da quelli contenuti nel materiale e nel getto, può essere preferibilmente scelto fra Au, Ag, Cu, Ni, Pt, Pd, Cr, W, Ir, Mo, Ta, Nb, Os, Re, Rh, Ru e Zr. The thin layer metal, preferably between 10 and 100 nm, to be deposited on the surface of the metal or composite material with a metal matrix, which must be different from those contained in the material and in the casting, can preferably be chosen from Au, Ag, Cu , Ni, Pt, Pd, Cr, W, Ir, Mo, Ta, Nb, Os, Re, Rh, Ru and Zr.
La deposizione di detto strato sottile metallico può essere effettuata preferibilmente mediante "sputtering" o mediante deposizione elettrochimica. The deposition of said thin metal layer can preferably be carried out by "sputtering" or by electrochemical deposition.
Anche qualsiasi altro metodo conosciuto, di tipo chimico, fisico, etc., di ricoprimento di superficie può essere utilizzato: ad esempio "plasmaspraying", deposizione assistita da laser, deposizione per evaporazione termica, deposizione assistita da magnetoni , CDV ("Chemical Vapour Deposition") etc. Any other known method, of a chemical, physical, etc. type, of surface covering can also be used: for example "plasmaspraying", laser-assisted deposition, thermal evaporation deposition, magneton-assisted deposition, CDV ("Chemical Vapor Deposition" ") etc.
Utilizzando un rivestimento adeguato il liquido da colare sarà in grado di bagnare il materiale metallico o composito a matrice metallica in modo sufficiente a trasferirgli del calore, dilavare lo strato di ossido che inevitabilmente si forma sulla superficie di detto materiale e legarsi direttamente al materiale se metallico, oppure alla matrice metallica, se si tratta di un composito. Una volta che il materiale è stato adeguatamente pulito, rivestito e posizionato entro lo stampo, si devono regolare i parametri di conduzione della colata in modo da garantire che un flusso conveniente di liquido surriscaldato lambisca le superfici del materiale. By using a suitable coating, the liquid to be cast will be able to wet the metal or metal matrix composite material sufficiently to transfer heat to it, wash off the oxide layer that inevitably forms on the surface of said material and bond directly to the material if metallic. , or to the metal matrix, if it is a composite. Once the material has been properly cleaned, coated and positioned within the mold, the casting conduction parameters must be adjusted to ensure that a convenient flow of superheated liquid laps the surfaces of the material.
E' importante scegliere opportunamente la posizione del materiale e studiare la forma dei condotti discendenti (alimentazione ) ed ascendente (fuoriuscita) entro lo stampo, in modo che il metallo liquido sia costretto a lambire, bagnare e dilavare le pareti del materiale prima di raffredarsi troppo. It is important to choose the position of the material appropriately and to study the shape of the descending (supply) and ascending (exit) ducts inside the mold, so that the liquid metal is forced to lick, wet and wash away the walls of the material before cooling too much. .
Si tratta dunque di tenere sotto controllo i seguenti tre parametri: temperatura di preriscaldamento del materiale, temperatura di colata del metallo (o lega), condizioni di flusso. In tal modo si può ottenere un eccellente legame metallurgico materiale-getto. It is therefore a question of keeping the following three parameters under control: preheating temperature of the material, casting temperature of the metal (or alloy), flow conditions. In this way an excellent metallurgical material-casting bond can be obtained.
Le canne dei cilindri possono essere ottenute mediante tecniche note (ad esempio: colata per gravità o pressione o pressocolata o "squeeze casting" o metallurgia delle polveri o per infiltrazione o miscelazione) sia in modo diretto che per successiva lavorazione meccanica all'utensile o plastica (quali estrusione, laminazione o forgiatura). The cylinder liners can be obtained by known techniques (for example: gravity or pressure casting or diecasting or "squeeze casting" or powder metallurgy or by infiltration or mixing) either directly or by subsequent mechanical processing to the tool or plastic (such as extrusion, rolling or forging).
Forniamo ora alcuni esempi aventi lo scopo di meglio illustrare l'invenzione, ma che in nessun modo devono essere considerati una limitazione dell'invenzione stessa: We now provide some examples whose purpose is to better illustrate the invention, but which in no way should be considered a limitation of the invention itself:
ESEMPIO 1 (Prova di laboratorio) EXAMPLE 1 (Laboratory test)
La canna è costituita da un tubo in lega ipereutettica Al-Si con un contenuto del 17% di Si, con diametro esterno di 50 mm, spessore 5mm ed altezza 65 mm, ottenuto per colata a gravità. The barrel is made of a hypereutectic Al-Si alloy tube with a content of 17% of Si, with an external diameter of 50 mm, 5 mm thickness and 65 mm height, obtained by gravity casting.
La superficie esterna della canna è rivestita mediante "sputtering" con un sottile strato di oro. The outer surface of the barrel is coated by "sputtering" with a thin layer of gold.
Il materiale del getto è una lega Ai-Si con un contenuto del 9% di Si. The casting material is an Ai-Si alloy with a 9% Si content.
Lo stampo di colata è in grafite (Fig. 1), ove: The casting mold is in graphite (Fig. 1), where:
1) lo stampo in grafite 1) the graphite mold
2) la canna 2) the barrel
3) il canale di colata. 3) the sprue.
La canna e lo stampo sono preriscaldati a 350°C. The barrel and the mold are preheated to 350 ° C.
La temperatura del metallo del getto è di 700°C. The metal temperature of the casting is 700 ° C.
Il volume del materiale del getto è di circa 400 cm<3>. The volume of the casting material is about 400 cm <3>.
La colata è eseguita in sorgente. The casting is performed in the source.
ESEMPIO 2 (Prova di laboratorio) EXAMPLE 2 (Laboratory test)
La canna è costituita da un tubo in materiale composito con diametro esterno di 50 mm, spessore 5 mm ed altezza 65 mm. The barrel is made up of a composite material tube with an external diameter of 50 mm, thickness 5 mm and height 65 mm.
Il materiale composito, ottenuto per infiltrazione , è a matrice di lega eutettica Al-Si, con un contenuto del 13% di Si, e con rinforzo costituito da polvere di Sic al 55% voi.. (Diametro medio della polvere 20 um). La superficie esterna della canna è rivestita mediante "sputtering" con un sottile strato di oro. The composite material, obtained by infiltration, has an Al-Si eutectic alloy matrix, with a content of 13% of Si, and with reinforcement consisting of 55% vol Sic powder (average diameter of the powder 20 um). The outer surface of the barrel is coated by "sputtering" with a thin layer of gold.
Il materiale del getto è una lega Ai-Si con un contenuto del 9% di Si. The casting material is an Ai-Si alloy with a 9% Si content.
Lo stampo di colata è in grafite (Fig. 1) come nell'esempio 1. The casting mold is made of graphite (Fig. 1) as in example 1.
La canna e lo stampo sono preriscaldati a 3O0°C. The barrel and the mold are preheated to 3O0 ° C.
La temperatura del metallo del getto è di 650°C. The metal temperature of the casting is 650 ° C.
Il volume del materiale del getto è di circa 3 The volume of the casting material is about 3
400 cm . 400 cm.
La colata è eseguita in sorgente. The casting is performed in the source.
ESEMPIO 3 (Prova industriale) EXAMPLE 3 (Industrial test)
La prova è stata eseguita su un impianto industriale di colata per basamenti di motori a 4 cilindri. The test was performed on an industrial casting plant for 4-cylinder engine blocks.
Le canne, ottenute per estrusione, sono costituite da tubi in materiale composito con diametro esterno di circa 95 iran, spessore circa 5 in ed altezza circa 130 mm. The rods, obtained by extrusion, are made of composite material pipes with an external diameter of about 95 iran, a thickness of about 5 in and a height of about 130 mm.
Il materiale composito, prodotto per infiltrazione e diluizione, è a matrice di lega eutettica Ai-Si, con un contenuto del 13% di Si, e con rinforzo costituito da polvere di Sic al 25% voi. (Diametro medio della polvere 20 um). The composite material, produced by infiltration and dilution, is an Ai-Si eutectic alloy matrix, with a content of 13% Si, and reinforced with Sic powder at 25% vol. (Average diameter of the powder 20 um).
La superficie esterna della canna è rivestita mediante "sputtering" con un sottile strato di oro. The outer surface of the barrel is coated by "sputtering" with a thin layer of gold.
Il materiale del getto è una lega Ai-Si con un contenuto del 9% di Si. The casting material is an Ai-Si alloy with a 9% Si content.
Lo stampo industriale di colata è in ghisa. Le canne sono preriscaldate a 300°C. The industrial casting mold is made of cast iron. The barrels are preheated to 300 ° C.
La temperatura del metallo del getto è di circa 700°C. The temperature of the metal of the casting is about 700 ° C.
Il volume del materiale del getto è di circa 10 dm<3>. The volume of the casting material is approximately 10 dm <3>.
La colata è eseguita in sorgente. The casting is performed in the source.
ESEMPIO 4 (Prova industriale) EXAMPLE 4 (Industrial test)
La prova è stata eseguita su un impianto industriale di colata per basamenti di motori a 4 cilindri. The test was performed on an industrial casting plant for 4-cylinder engine blocks.
Le canne, ottenute per estrusione, sono costituite da tubi in materiale composito con diametro esterno di circa 95 mm, spessore circa 5 mm ed altezza circa 130 mm. The barrels, obtained by extrusion, are made of composite material pipes with an external diameter of approximately 95 mm, thickness approximately 5 mm and height approximately 130 mm.
Il materiale composito, prodotto per miscelazione, è a matrice di lega eutettica Ai-Si, con un contenuto del 9% di Si, e con rinforzo costituito da polvere di Sic al 15% voi. (Diametro medio della polvere 20 um). La superficie esterna della canna è rivestita mediante "sputtering" con un sottile strato di oro. The composite material, produced by mixing, is an Ai-Si eutectic alloy matrix, with a content of 9% Si, and reinforced with Sic powder at 15% vol. (Average diameter of the powder 20 um). The outer surface of the barrel is coated by "sputtering" with a thin layer of gold.
Il materiale del getto è una lega Ai-Si con un contenuto del 9% di Si. The casting material is an Ai-Si alloy with a 9% Si content.
Lo stampo industriale di colata è in ghisa. Le canne sono preriscaldate a 300°C. The industrial casting mold is made of cast iron. The barrels are preheated to 300 ° C.
Lo stampo è preriscaldato a circa 370°C. The mold is preheated to about 370 ° C.
La temperatura del metallo del getto è di circa 700°C. The temperature of the metal of the casting is about 700 ° C.
Il volume del materiale del getto è di circa 10 dm3. The volume of the casting material is approximately 10 dm3.
La colata è eseguita in sorgente. The casting is performed in the source.
Claims (16)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19968A IT1240746B (en) | 1990-04-06 | 1990-04-06 | PROCEDURE FOR OBTAINING A CONTINUOUS METALLURGIC LINK BETWEEN CYLINDER BARRELS ID THE JET CONSTITUTING THE BASE OF AN INTERNAL COMBUSTION ENGINE |
| DK91200747.3T DK0450722T3 (en) | 1990-04-06 | 1991-03-29 | A method of obtaining a sustained metallurgical bond between the cylinder liners and the casting enclosing the crankcase of an internal combustion engine |
| ES91200747T ES2066332T3 (en) | 1990-04-06 | 1991-03-29 | PROCEDURE TO OBTAIN A CONTINUOUS METALLURGICAL UNION BETWEEN THE CYLINDER SHIRTS AND THE MOLDED BODY THAT CONSTITUTES THE HOUSING OF AN INTERNAL COMBUSTION ENGINE. |
| EP91200747A EP0450722B1 (en) | 1990-04-06 | 1991-03-29 | Process for obtaining a continuous metallurgical bond between the linings of the cylinders and the cast which constitutes the crankcase of an internal-combustion engine |
| AT91200747T ATE116714T1 (en) | 1990-04-06 | 1991-03-29 | METHOD FOR A CONTINUOUS METAL BOND BETWEEN THE CYLINDER LINING AND THE CRANKCASE CASTING OF AN INTERNAL ENGINE. |
| DE69106418T DE69106418T2 (en) | 1990-04-06 | 1991-03-29 | Process for a continuous metal collar between cylinder liner and crankcase casting of an internal combustion engine. |
| CA002039878A CA2039878A1 (en) | 1990-04-06 | 1991-04-05 | Process for obtaining a continuous metallurgical bond between the linings of the cylinders and the cast which constitutes the crankcase of an internal-combustion engine |
| BR919101389A BR9101389A (en) | 1990-04-06 | 1991-04-05 | PROCESS FOR OBTAINING A CONTINUOUS METALLURGICAL CONNECTION |
| JP3099724A JPH04251657A (en) | 1990-04-06 | 1991-04-05 | Method for providing continuous metallurgical connection between cylinder liner and cast forming crank case of internal combustion engine |
| CN91102700.9A CN1027188C (en) | 1990-04-06 | 1991-04-06 | Process for obtaining continuous metallurgical bond between linings of cylinders and cast which constitutes crankcass of mternal combustion engine |
| GR950400334T GR3015109T3 (en) | 1990-04-06 | 1995-02-17 | Process for obtaining a continuous metallurgical bond between the linings of the cylinders and the cast which constitutes the crankcase of an internal-combustion engine. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19968A IT1240746B (en) | 1990-04-06 | 1990-04-06 | PROCEDURE FOR OBTAINING A CONTINUOUS METALLURGIC LINK BETWEEN CYLINDER BARRELS ID THE JET CONSTITUTING THE BASE OF AN INTERNAL COMBUSTION ENGINE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9019968A0 IT9019968A0 (en) | 1990-04-06 |
| IT9019968A1 true IT9019968A1 (en) | 1991-10-06 |
| IT1240746B IT1240746B (en) | 1993-12-17 |
Family
ID=11162713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT19968A IT1240746B (en) | 1990-04-06 | 1990-04-06 | PROCEDURE FOR OBTAINING A CONTINUOUS METALLURGIC LINK BETWEEN CYLINDER BARRELS ID THE JET CONSTITUTING THE BASE OF AN INTERNAL COMBUSTION ENGINE |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0450722B1 (en) |
| JP (1) | JPH04251657A (en) |
| CN (1) | CN1027188C (en) |
| AT (1) | ATE116714T1 (en) |
| BR (1) | BR9101389A (en) |
| CA (1) | CA2039878A1 (en) |
| DE (1) | DE69106418T2 (en) |
| DK (1) | DK0450722T3 (en) |
| ES (1) | ES2066332T3 (en) |
| GR (1) | GR3015109T3 (en) |
| IT (1) | IT1240746B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4244502C1 (en) * | 1992-12-30 | 1994-03-17 | Bruehl Aluminiumtechnik | Cylinder crankcase and method for its manufacture |
| US5429173A (en) * | 1993-12-20 | 1995-07-04 | General Motors Corporation | Metallurgical bonding of metals and/or ceramics |
| DE102004007774A1 (en) * | 2004-02-18 | 2005-09-15 | Mahle Gmbh | Bushing for an internal combustion engine |
| JP4584058B2 (en) * | 2005-07-08 | 2010-11-17 | トヨタ自動車株式会社 | Cylinder liner and manufacturing method thereof |
| DE102010055162A1 (en) * | 2010-12-18 | 2012-06-21 | Mahle International Gmbh | Coating and coated casting component |
| BR102013005326A2 (en) * | 2013-03-05 | 2014-12-02 | Mahle Metal Leve Sa | CYLINDER SHIRT FOR ENGINING ON AN ENGINE BLOCK AND ENGINE BLOCK |
| CN107598485A (en) * | 2017-07-25 | 2018-01-19 | 中原内配集团安徽有限责任公司 | A kind of manufacture craft of screw thread process type cylinder sleeve |
| CN113999999A (en) * | 2021-10-29 | 2022-02-01 | 华中科技大学 | Preparation method of rare earth reinforced solid-liquid composite cast magnesium/aluminum bimetal and product |
| CN114046209A (en) * | 2022-01-13 | 2022-02-15 | 爱柯迪股份有限公司 | Silicon nitride fiber reinforced aluminum alloy engine cylinder sleeve and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1340869A (en) * | 1962-08-17 | 1963-10-25 | Willys Motors | Internal combustion engine and method for its manufacture |
| DE3837254A1 (en) * | 1988-11-03 | 1990-05-10 | Bayerische Motoren Werke Ag | Light alloy insert for the formation of an expansion joint in combustion chamber walls of internal combustion engines formed from cast light alloy, especially cylinder head bases of diesel internal combustion engines |
-
1990
- 1990-04-06 IT IT19968A patent/IT1240746B/en active IP Right Grant
-
1991
- 1991-03-29 ES ES91200747T patent/ES2066332T3/en not_active Expired - Lifetime
- 1991-03-29 EP EP91200747A patent/EP0450722B1/en not_active Expired - Lifetime
- 1991-03-29 DK DK91200747.3T patent/DK0450722T3/en active
- 1991-03-29 DE DE69106418T patent/DE69106418T2/en not_active Expired - Fee Related
- 1991-03-29 AT AT91200747T patent/ATE116714T1/en not_active IP Right Cessation
- 1991-04-05 BR BR919101389A patent/BR9101389A/en not_active IP Right Cessation
- 1991-04-05 JP JP3099724A patent/JPH04251657A/en active Pending
- 1991-04-05 CA CA002039878A patent/CA2039878A1/en not_active Abandoned
- 1991-04-06 CN CN91102700.9A patent/CN1027188C/en not_active Expired - Fee Related
-
1995
- 1995-02-17 GR GR950400334T patent/GR3015109T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR3015109T3 (en) | 1995-05-31 |
| CN1027188C (en) | 1994-12-28 |
| EP0450722A1 (en) | 1991-10-09 |
| IT9019968A0 (en) | 1990-04-06 |
| BR9101389A (en) | 1991-11-26 |
| DE69106418D1 (en) | 1995-02-16 |
| EP0450722B1 (en) | 1995-01-04 |
| ES2066332T3 (en) | 1995-03-01 |
| JPH04251657A (en) | 1992-09-08 |
| CN1056923A (en) | 1991-12-11 |
| ATE116714T1 (en) | 1995-01-15 |
| IT1240746B (en) | 1993-12-17 |
| CA2039878A1 (en) | 1991-10-07 |
| DK0450722T3 (en) | 1995-05-15 |
| DE69106418T2 (en) | 1995-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970415 |