Research on Technology of Alloyed Copper Casting

Rzadkosz, S.; Kranc, M.; Garbacz-Klempka, A.; Piękoś, M.; Kozana, J.; Cieślak, W.

doi:10.2478/afe-2014-0041

Cited by 15 publications

(25 citation statements)

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“…In alloyed copper, the addition of chromium increases the tensile strength and hardness [17,18]. During the heat treatment of Cu alloys with the addition of chromium, highly dispersed Cr particles are released from the supersaturated solid solution α (Cu).…”

Section: Discussionmentioning

confidence: 99%

Modification of the Railway Traction Elements

2023

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This paper presents the results of research on a newly developed surface layer made by laser remelting the working surface of the Cu-ETP (CW004A, Electrolytic Tough Pitch) copper section insulator guide with Cr-Al powder. For the investigation, a fibre laser was used with relatively high power, reaching 4 kW, so as to ensure a high gradient of cooling rate for microstructure refinement. The microstructure of the transverse fracture of the layer (SEM) and the distribution of elements in the microareas (EDS) were investigated. The test results showed that chromium does not dissolve in the Cu matrix, and its precipitates take the shape of dendrites. The hardness and thickness of the surface layers as well as the friction coefficient and the influence of the Cr-Al powder feeding speed on them were examined. For the distance from the surface to 0.45 mm, the hardness of the produced coatings is above 100 HV0.3, while the friction coefficient of the produced coatings is in the range of 0.6–0.95. More sophisticated investigation results concern the d-spacing lattice parameters of the crystallographic structure of the obtained Cu phase reaching the range between 3.613–3.624 Å.

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Section: Discussionmentioning

confidence: 99%

Modification of the Railway Traction Elements

2023

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“…Then, the metal is cooled to allow crystallization. Finally, the solidified part is removed from the mold for further cooling and finishing [1,2]. The finished product undergoes quality control, during which it is inspected for dimensional accuracy, structural integrity and surface finish.…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Bańkowski,

Spadło

2019

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This article proposes to use abrasive waterjet cutting (AWJ) for deflashing, deburring and similar finishing operations in casting. The basic requirements concerning the dimensional accuracy and surface texture of cast components are not met if visible surface flaws are detected. The experiments focused on the removal of external flash from elements made of EN-GJL-150 cast iron. The method employed for finishing was abrasive waterjet cutting. The tests were carried out using an APW 2010BB waterjet cutting machine. The form profiles before and after flash removal were determined with a Taylor Hobson PGI 1200 contact profiler. A Nikon AZ100 optical microscope was applied to observe and measure the changes in the flash height and width. The casting surface after finishing was smooth, without characteristic sharp, rough edges that occur in the cutting of objects with a considerable thickness. It should be emphasized that this method does not replace precise cutting operations. Yet, it can be successfully used to finish castings for which lower surface quality is required. An undoubted advantage of waterjet cutting is no effect of high temperature as is the case with plasma, laser or conventional cutting. This process is also easy to automate; one tool is needed to perform different finishing operations in order to obtain the desired dimensions, both internal and external.

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“…Iron in the form of an alloying element improves the strength properties at higher alloy strengths and increases its hardness at the expense of a considerable reduction in elongation. Iron mainly causes corrosion resistance (point corrosion), reduces thermal and electrical conductivity [1,2]. Iron has low solubility in aluminium alloys and is eliminated as intermetallic phases.…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Hren¹,

Svobodová²,

Michna³

2018

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The research described in this contribution is focused on fractographic analysis of the fracture area of newly developed eutectic silumin type AlSi9NiCuMg0.5 (AA 4032), which was developed and patented by a team of staff of the Faculty of Mechanical Engineering. The paper presents determination of the cause of casting cracks in operating conditions. Fractographic analysis of the fracture area, identification of the structure of the casting, identification of structural components on the surface of the fracture surface and chemical analysis of the material in the area of refraction were performed within the experiment. Al-Si alloys with high specific strength, low density, and good castability are widely used in pressure-molded components for the automotive and aerospace industries. The results shown that the inter-media phases Fe-Al and Fe-Si in aluminium alloys lead to breakage across the entire casting section and a crack that crossed the entire cross section, which was confirmed by EDS analysis.

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Research on Technology of Alloyed Copper Casting

Cited by 15 publications

References 0 publications

Modification of the Railway Traction Elements

Modification of the Railway Traction Elements

Archives of Foundry Engineering

Archives of Foundry Engineering

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