Reinforcing cast iron with composite insert

Dulska, A.; Studnicki, A.; Szajnar, J.

doi:10.1515/amm-2017-0054

Cited by 21 publications

(19 citation statements)

References 4 publications

(5 reference statements)

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“…Metal foams, particularly cast aluminum-ceramic foams are characterized [8][9][10][11][12][14][15][16][17] by low thermal conductivity coefficient compared to other materials (Fig. 4).…”

Section: Discussionmentioning

confidence: 99%

Study of Thermal Properties of Cast Metal- Ceramic Composite Foams

Gawdzińska¹,

Chybowski²,

Przetakiewicz³

2017

Archives of Foundry Engineering

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Owing to its properties, metallic foams can be used as insulation material. Thermal properties of cast metal-ceramic composite foams have applications in transport vehicles and can act as fire resistant and acoustic insulators of bulkheads. This paper presents basic thermal properties of cast and foamed aluminum, the values of thermal conductivity coefficient of selected gases used in foaming composites and thermal capabilities of composite foams (AlSi11/SiC). A certificate of non-combustibility test of cast aluminum-ceramic foam for marine applications was included inside the paper. The composite foam was prepared by the gas injection method, consisting in direct injection of gas into liquid metal. Foams with closed and open cells were examined. The foams were foaming with foaming gas consisting of nitrogen or air. This work is one of elements of researches connected with description of properties of composite foams. In author's other works acoustic properties of these materials will be presented.

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“…Metal foams, particularly cast aluminum-ceramic foams are characterized [8][9][10][11][12][14][15][16][17] by low thermal conductivity coefficient compared to other materials (Fig. 4).…”

Section: Discussionmentioning

confidence: 99%

Study of Thermal Properties of Cast Metal- Ceramic Composite Foams

Gawdzińska¹,

Chybowski²,

Przetakiewicz³

2017

Archives of Foundry Engineering

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“…Increasing interest around surface layers and elements reinforced with the core caused their very dynamic developement. Improving the usable properties, extending the life of tools and subassemblies, and also reducing the production time and production costs are just a few of the advantages of using surface layers [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The processes which take a place inside the mold cause the creation of a cast with a permanent combination of two chemically different materials with different properties. The big advantage of using this method is that the obtained layer is created in the one process -casting, and the technology does not differ from the production of castings -it requires only pre-preparation of the insert (preform) [1][2][3][4][5][6][7]. * Corresponding author: agnieszka.dulska@polsl.pl…”

Section: Introductionmentioning

confidence: 99%

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Possibilities of using 3D printing for surface layers

Dulska

2018

MATEC Web Conf.

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Abstract. This article describes how to improve the tribological properties of cast iron by local strengthening by titanium layer, directly in the casting process. The research comprised test molds with a titanium (composite) layer. The insert with titanium was made basing on proprietary development of geometric assumptions. The innovation relies on application the 3D printing insert obtaining in SLM (selective laser melting) method. The tests included measurement of resistance to abrasive wear and carried out metallographic, microhardness measurements as the presents detailed geometry of the insert as well. On the basis of obtaining results was stated that there is a possibility of reinforcing surface layer of the grey cast iron casting by using 3D printing scaffold insert in the method of mould cavity preparation. Moreover there was a local increase in hardness and abrasive wear resistance in spite of the precipitation of titanium carbides in surface layer of grey cast iron.

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“…They are artificially manufactured and consist of metallic matrix and reinforcing phase of carbide, boride or oxide particles in the form of powders, fibres, lamellae as well as carbon microspheres. These materials are often manufactured by mixing ceramic particles with aluminium, magnesium, copper and nickel casting alloys [1,2] or by infiltration of porous preform [3]. The materials fabricated in this way exhibit good wear resistance while showing low impact strength resulting from a lack of coherence between ceramic particles and the matrix.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Characteristic of TiCReinforced Cast Steel after GTAW Remelting

Sobula

Kwiecień

Olejnik

et al. 2017

Archives of Foundry Engineering

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In this study, low-carbon cast steel was reinforced with TiC by SHS-B method, also known as combustion synthesis during casting method. The composite zone was then subjected to surface remelting by Gas Tungsten Arc Welding (GTAW) method. The remelting operation was realized manually, at 150 A current magnitude. Microstructure, phase composition and hardness of remelted zone were investigated. XRD results reveal that the phases of the composite zone in initial state consist of TiC and Feα. Surface remelting resulted in formation of thick layers containing TiC carbides, Feα and Feγ. Microstructural examination has shown strong refinement of titanium carbides in remelted zone and complete dissolution of primary titanium carbides synthetized during casting. The average diameter of carbides was below 2 µm. The structural changes are induced by fast cooling which affects crystallization rate. The hardness (HV30) of the remelted layer was in the range between 250 HV and 425 HV, and was lower than hardness in initial state.

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Reinforcing cast iron with composite insert

Cited by 21 publications

References 4 publications

Study of Thermal Properties of Cast Metal- Ceramic Composite Foams

Study of Thermal Properties of Cast Metal- Ceramic Composite Foams

Possibilities of using 3D printing for surface layers

Microstructure Characteristic of TiCReinforced Cast Steel after GTAW Remelting

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