Thematic scope includes scientific issues of foundry industry:    Theoretical Aspects of Casting Processes,  Innovative Foundry Technologies and Materials,  Foundry Processes Computer Aiding,  Mechanization, Automation and Robotics in Foundry,  Transport Systems in Foundry,  Castings Quality Management,  Environmental Protection.  Why subscribe and read

The journal "Archives of Foundry Engineering" covers scientific issues related to the foundry industry, including theoretical aspects of casting processes, innovative foundry technologies and materials, computer-aided foundry processes, mechanization, automation, and robotics in foundry, transport systems in foundry, castings quality management, and environmental protection.

《Archives of Foundry Engineering》期刊的主题范围包括铸造行业的科学问题：铸造工艺的理论方面、创新的铸造技术和材料、铸造过程的计算机辅助、铸造中的机械化、自动化与机器人技术、铸造运输系统、铸件质量管理以及环境保护。

Archives of Foundry Engineering

The subject of the presented research is the influence of molybdenum on selected properties of alloys that are based on the Al-Cu system. It could be observed that the introduction of molybdenum to the multi-component alloy at levels of up to 0.5 wt.% showed increases in the degrees of undercooling ΔT along with the increasing contents of the introduced element. The addition of molybdenum contributed to the reduction of the size of the primary grains of the α(Al) phase. Molybdenum improved the strength of the alloy while achieving elongation at a significant level. This is an element that occurs in the alloy – both in the iron-manganese phases and in the segregates inside the grains. Most of the iron-manganese phases occurred in a more spheroidal form. Additionally, tests were carried out on higher molybdenum content in the alloy. The addition of the tested chemical element at a level of 1 wt.% caused the precipitation of the phases that contained molybdenum, which did not dissolve after heat treatment.

S. Stąpór

M. Górny

Ł. Gondek

B. Gracz

M. Kawalec

The Role of Molybdenum in the Formation of the Microstructure and Properties of Al-Cu Alloys

钼在Al-Cu合金微观结构形成及性能中的作用

Currently, great emphasis is placed on the production of castings with complex shapes. The hybrid investment casting technology using 3D printed models offers new possibilities in the production of such complex and thin-walled castings. The motivation for this paper was to find a solution to the problem with ceramic shells cracking during the 3D model firing stage. The main factors affecting the shell cracking are the thermal expansion of the model and the shell material, and the newly considered pressure of the gas closed in the ceramic shell cavity. First, thermal analyses were performed of a commercial material used for 3D printing - Polymaker PolyCast™. The characteristics yielded by the measurements helped establish the glass transition temperature, the autoignition temperature and the behaviour of the gas produced by the model burning. Suitable experimental models in the shape of tetrahedrons were designed and used for a number of experiments. The tests confirmed that cracks only occur during shock firing in models printed by the FFF technology with 0% of infill. A solution suggested for further experiments is purposeful venting of the models. Practical testing of the optimization has also been performed. The last step was measurement of the heat transfer through the ceramic shell after being placed in the annealing furnace. There were temperature evolution profiles in the system model-ceramic shell obtained.

R. Štěpán

V. Krutiš

R. Jelínek

M. Petřík

Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

混合熔模铸造技术中3D打印图案的优化

Using the numerical modelling, the movement of the solid phase in the form of concentrate particles was analysed in the space of the reaction shaft and in the settler of the flash furnace. The calculations were carried out using a two-phase flow module. It was found that for all analysed concentrate particle sizes their share in the reaction shaft decreased over time. The particles moved in the form of one stream extending along the reaction shaft, accumulating on the side walls of the shaft and settler. Vortices were formed in the region of the settler tub containing particles to the upper spaces of the reaction shaft. The proportion of concentrate particles along the center of the reaction shaft after 60 s is 70 μm 1% - 3% for particles, 80 μm 0.1% - 0.7%, and for 100 μm 0,2m 0.2% - 0.7%. Along the side walls of the shaft, the shares of 70 μm particles varied between 40% and 9% over a shaft length of 5.5 m, and over 1.5 m from 12% to 10%. For 80 μm particles, the shares were 5% to 1%. The shares of 100 μm particles over a length of 1.5 m varied between 7% and 3%, and over a length of 5.5 m from 7% to 2%. Along the 70 μm reaction shaft, the concentrate particles moved the fastest at a speed of 8 m/s to 0.23 m/s. The 80 μm particles moved fastest in the range of 13 m/s to 3 m/s, and the 100 μm particles from 0.4 m/s to 2 m/s.

E. Kolczyk

Modelling the Movement of Concentrate Particles in a Flash Furnace

闪速炉中精矿颗粒运动的建模

This paper discusses the ability to apply the test method using a scanning electron microscope (SEM) together with EDS (Energy Dispersive Spectroscopy) analysis to assess the quality of fresh chromite sand delivered by various suppliers to Huta Małapanew Sp. z o.o. The research was initiated due to the non-cyclical occurrence of surface casting defects, i.e. pitted skin and burn-on of chromite moulding sand for cast steel casting. The scope of studies comprised the quality assessment of sixteen chromite sand batches delivered for six months by two suppliers. The analysis of the results obtained was used to describe components of the tested chromite sand batches and develop criteria for their quality assessment, considering the chemical composition of chromite grains and the amount of impurities in the form of silica sand and the binder particles. Moreover, clear suggestions were developed concerning the ability to use the given chromite sand batch as the base of moulding sand made in Alphaset technology in Huta Małapanew Sp. z o.o.

T. Wróbel

J. Jezierski

D. Bartocha

E. Feliks

A. Paleń

Quality Assessment Method for Chromite Sand to Reduce the Number of Cast Steel Surface Defects

铬铁矿砂质量评估方法以减少铸钢表面缺陷数量

This paper presents and describes the research capabilities of a prototype experimental bench for realising the composite processing of liquid aluminium alloys by involving gas refining by rotary degassing technology and refining with salts (fluxes) in powder form. The constructed unit was installed in the Experimental Foundry of the Faculty of Foundry Engineering at AGH in the Department of Moulding Processes, Mould Technology, and Non-Ferrous Metals Foundry; it is an integral part of a thyristor-based medium-frequency induction furnace with a melting capacity of up to 60 kg for aluminium alloys. The new experimental bench performs barbotage refining using a rotating head with the possibility of alternating the introduction of refiners/modifiers in powder form. This method can be used in casting lines: continuous in reactors, or batch in ladles. The innovation of the design of the stand and the treatment of the liquid metal with powdered additives consists of dosing the refiner fluid deep into the metal bath through a channel that was made in the rotor axis and the head; this differs from conventional methods in the small amounts of introduced salts and, at the same time, in the very good metal-inert gas-salt homogeneity of the treated metal bath. This method of dosing the refining salts increases the efficiency of their use, reduces any losses, and limits the formation of post-refining slag (thus, minimising the negative environmental effect). The feedstock that was used for the test smelts consisted of recycled materials: aluminium 99.7 (in the form of wires of various cross-sections that were used in electrical engineering – so-called ‘SECTOR’), and the sub-eutectic AlSi7Mg0.3 alloy (in ingot form). The scope of the tests included verifying the technical solutions that were adopted for the dosing of the bulk materials in the form of a fluid, selecting the melting temperature, and dispersing (distributing) the materials in the bath via the rotor head. The results of the trials were reviewed in terms of the changes in the hydrogen content of the performed process and information on such powder-flux-introduction parameters as the type of the rotor head and the melting temperature of the powder flux. Preliminary trials showed that the performed complex refining (rotary degassing + refining with salts being blown as a fluid into the lower parts of the liquid metal) allowed us to reduce the hydrogen content to a level that could not be achieved by gas refining alone.

Abbreviation	Arch. Foundry Eng.
Journal Impact	0.49
Quartiles(Global)	METALLURGY & METALLURGICAL ENGINEERING(Q4)

ISSN	1897-3310, 2299-2944
h-index	17

Publication Information	Publisher: Polish Academy of Sciences, Katowice Branch，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2012，Proportion of original research papers: 95.83%，Self Citation Rate:33.30%， Gold OA Rate: 98.98%

Archives of Foundry Engineering

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The Role of Molybdenum in the Formation of the Microstructure and Properties of Al-Cu Alloys

Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

Modelling the Movement of Concentrate Particles in a Flash Furnace

Quality Assessment Method for Chromite Sand to Reduce the Number of Cast Steel Surface Defects

Introduction of Powder Fluxes in Rotary Degassing System Towards Intensifying Refining Process of Aluminium Alloys

The Role of Molybdenum in the Formation of the Microstructure and Properties of Al-Cu Alloys

Optimization of 3D Printed Patterns for the Hybrid Investment Casting Technology

Modelling the Movement of Concentrate Particles in a Flash Furnace

Quality Assessment Method for Chromite Sand to Reduce the Number of Cast Steel Surface Defects

Introduction of Powder Fluxes in Rotary Degassing System Towards Intensifying Refining Process of Aluminium Alloys