Effect of Selected Parameters of Pressure Die Casting on Quality of AlSi9Cu3 Castings

Pałyga, Ł.; Stachowicz, M.; Granat, K.

doi:10.1515/afe-2015-0044

Cited by 8 publications

(5 citation statements)

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“…Intermetallic phases, because of their size, are easily to observe in all lower casts of each seven series. Particular visible is iron-rich phase which presence with eutectic precipitation has negative effect on the mechanical properties, especially strength and hardness [11,12], of the cast material.…”

Section: Metallographic Test Resultsmentioning

confidence: 99%

Effect of parameters of high-pressure die casting on occurrence of casting nonconformities in sleeves of silumin alloy EN AB 47100

Pałyga

Stachowicz

Granat

2017

Archives of Metallurgy and Materials

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The paper presents a research on the effect of extreme -for the technology of the considered silumin EN AB 47100 -parameters of high-pressure die casting on occurrence of casting nonconformities. Considered was influence of the way of assembling the mould cooled-down to 140-160°C, non-standard for the selected casting, and pouring temperature in the range of 705 to 720°C (higher than the recommended) of non-refined alloy. The castings were prepared with use of a high-pressure casting machine made by Kirov with mould closing force of 2500 kN. Occurrence of nonconformities was evaluated on properly prepared specimens taken from the castings manufactured with various parameters of the injection piston and various multiplication pressures. The results were subjected to quantitative and qualitative analyses of casting nonconformities and distribution of major alloying elements. It was found that proper selection of working parameters of the casting machine, in spite of disadvantageous pouring conditions, makes it possible to reduce occurrence of some casting defects, like shrinkage cavities and porosity, to improve tightness of castings even when the alloy refining process is omitted.

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Section: Metallographic Test Resultsmentioning

confidence: 99%

Effect of parameters of high-pressure die casting on occurrence of casting nonconformities in sleeves of silumin alloy EN AB 47100

Pałyga

Stachowicz

Granat

2017

Archives of Metallurgy and Materials

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“…EN AB 46000 is an aluminum alloy AlSi9Cu3 (Fe). It is a universal alloy with very good castability, particularly suitable for pressure die casting [11]. It is for wide range of applications, also for complicated and thin-wall castings, especially suitable for highly stressed pressure die castings.…”

Section: Methodsmentioning

confidence: 99%

Substituting Die-Cast Products by Injection Molded High Performance Polymers

Gagliardi

Quadrini

Santo

2016

KEM

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High performance polymers (HPP) represent a wide class of materials which is used in all the engineering sectors from automotive to domestic appliances. Thanks to their high mechanical and functional properties HPPs, have substituted metals in many applications with the result of reducing manufacturing time and costs. In such cases, this substitution also results in an improvement of part performances as in the case of tribological applications, despite of the strong sensibility of tribological polymers to manufacturing processes. However, supplying costs of high performance polymers is continuously increasing in the last years and the cheapness of this substitution is always under discussion. In this work, a comparison is made between injection moulding of glass filled polyamide and aluminum die casting in terms of process energy and production cost. The production of a motorcycle lever has been considered as case-study. The plastic lever has been also prototyped by machining to show its correct functionality.

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“…The methodology of surface roughness measurements has been described in the literature [2,20]. Moulds for the assessment of external casting surface quality were made from the moulding sands based on the reclaims with Resin 1.…”

Section: Casting Surface Qualitymentioning

confidence: 99%

Archives of Foundry Engineering

Kamińska,

Angrecki,

Puzio

et al. 2022

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The aim of the research was to determine the effect of the primary quality of reclaim from dry mechanical reclamation on the strength properties and service life of moulding sands based on this reclaim. Another aim was to establish the effect of the quality of reclaim, sulphur content -in particular, on the surface quality and thickness of the deformed surface layer in ductile iron castings. The research has revealed differences in the strength parameters and service life (mouldability) of sands based on the tested reclaims, depending on the type of the furfuryl resin used, including resins whose synthesis was done as part of the Żywfur project. Examinations of the structure of the surface layer of test castings poured in moulds made of loose self-hardening sands containing the addition of reclaim have confirmed the occurrence of degenerated spheroidal graphite in this part of the casting. It should be noted here that when massive castings with a long solidification time are made, the graphite degeneration effect can be more visible and the layer with the changed structure can increase in thickness. The research has clearly shown that it is necessary to control the parameters of the reclaim, including sulphur content which is transferred from the hardener and accumulates on the grains. This phenomenon has a negative impact not only on the sand strength and technological properties but also on the surface layer of castings.

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Effect of Selected Parameters of Pressure Die Casting on Quality of AlSi9Cu3 Castings

Cited by 8 publications

References 0 publications

Effect of parameters of high-pressure die casting on occurrence of casting nonconformities in sleeves of silumin alloy EN AB 47100

Effect of parameters of high-pressure die casting on occurrence of casting nonconformities in sleeves of silumin alloy EN AB 47100

Substituting Die-Cast Products by Injection Molded High Performance Polymers

Archives of Foundry Engineering

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