Archives of Foundry Engineering最新文献_第4页

Effect of Inoculant Emgesal® Flux 5 on the Microstructure of Magnesium Alloy AZ91 孕育剂Emgesal®Flux 5对AZ91镁合金显微组织的影响

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2019.127109

C. Rapiejko, D. Mikusek, A. Andrzejczak, T. Pacyniak

{"title":"Effect of Inoculant Emgesal® Flux 5 on the Microstructure of Magnesium Alloy AZ91","authors":"C. Rapiejko, D. Mikusek, A. Andrzejczak, T. Pacyniak","doi":"10.24425/afe.2019.127109","DOIUrl":"https://doi.org/10.24425/afe.2019.127109","url":null,"abstract":"This work presents the results of the research of the effect of the inoculant Emgesal Flux 5 on the microstructure of the magnesium alloy AZ91. The concentration of the inoculant was increased in samples in the range from 0.1% to 0.6%. The thermal processes were examined with the use of Derivative and Thermal Analysis (DTA). During the examination, the DTA samplers were preheated up to 180 °C. A particular attention was paid to finding the optimum amount of inoculant, which would cause fragmentation of the microstructure. The concentration of each element was verified by means of a spark spectrometer. In addition, the microstructures of the samples were examined with the use of an optical microscope, and an image analysis with a statistical analysis using the NIS–Elements program were carried out. Those analyses aimed at examining the differences between the grain diameters of phase α Mg and eutectic α Mg +γ(Mg 17 Al 12 ) in the prepared samples as well as the average size of each type of grain by way of measuring their perimeters. This paper is an introduction to a further research of grain refinement in magnesium alloys, especially AZ91. Another purpose of this research is to achieve better microstructure fragmentation of magnesium alloys without the related changes of the chemical composition, which should improve the mechanical properties.","PeriodicalId":8301,"journal":{"name":"Archives of Foundry Engineering","volume":"6 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Mixing Efficiency and How it Affects the Properties of the New Green Sand Mixtures 混合效率评价及其对新型绿砂混合料性能的影响

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2023.146666

引用次数: 0

Effect of Alloying Additives and Casting Parameters on the Microstructure and Mechanical Properties of Silicon Bronzes 合金添加剂和铸造参数对硅青铜显微组织和力学性能的影响

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2023.146669

引用次数: 0

The Influence of Adsorbed Al2O3 Inclusions on the Viscosity Behavior of Mould Slag 吸附Al2O3夹杂物对模具渣黏度行为的影响

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2019.127118

D. Kalisz, K. Kuglin

引用次数: 1

Application of Modular Die for Fluidity Test and Monitoring of the Pressing Force Flow by Semi-solid Squeeze Casting of AlSi7Mg0.3 模块化模具在AlSi7Mg0.3半固态挤压铸造流动性测试及压力流动监测中的应用

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2020.133332

{"title":"Application of Modular Die for Fluidity Test and Monitoring of the Pressing Force Flow by Semi-solid Squeeze Casting of AlSi7Mg0.3","authors":"","doi":"10.24425/afe.2020.133332","DOIUrl":"https://doi.org/10.24425/afe.2020.133332","url":null,"abstract":"The fluidity is the term to determine the materials ability to fill the mold cavity properly. Fluidity is complex property with many variables. Up to this date, there is no methodology for defining the fluidity in a semisolid material state. Submitted paper deals with the proposal of a new method designed for aluminium alloy fluidity evaluation in semi-solid state trough the design of the layered construction die. Die will be primary used for fluidity tests of semi-solid squeeze casted aluminium alloy and to observe the pressing force flow by mentioned casting technology. The modularity consists of possibility to change each die segment. In the experiment the die design was evaluated by simulation in ProCAST 11.5 and by production of experimental castings. The die was made by laser cutting technology from construction steel S355JR. Experimental material was aluminium alloy AlSi7Mg0.3. The temperature of the semisolid state was chosen to achieve 35% of solid phase. The result of next study should be a selected parameters observation and their effect on the fluidity of aluminium alloy in semi-solid state. This will be very important step to determine the optimal conditions to achieve a castings with certain wall thickness produced by the method of semi-solid squeeze casting","PeriodicalId":8301,"journal":{"name":"Archives of Foundry Engineering","volume":"560 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135635626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication and Characteristics of Copper-Intermetallics Composites 铜-金属间化合物复合材料的制备及性能研究

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2020.133325

{"title":"Fabrication and Characteristics of Copper-Intermetallics Composites","authors":"","doi":"10.24425/afe.2020.133325","DOIUrl":"https://doi.org/10.24425/afe.2020.133325","url":null,"abstract":"The paper presents the results of research on the production and application of sintered copper matrix composite reinforced with titanium-copper intermetallic phases. Cu- Ti composites were fabricated by powder metallurgy. The starting materials for obtaining the sintered composites were commercial powders of copper and titanium. Experiments were carried out on specimens containing 2.5, 5, 7.5 and 10 % of titanium by weight. Finished powders mixtures containing appropriate quantities of titanium were subjected to single pressing with a hydraulic press at a compaction pressure of 620 MPa. Obtained samples were subjected to sintering process at 880 °C in an atmosphere of dissociated ammonia. The sintering time was 6 hours. The introduction of titanium into copper resulted in the formation of many particles containing intermetallic phases. The obtained sinters were subjected to hardness, density and electrical conductivity measurements. Observations of the microstructure on metallographic specimens made from the sintered compacts were also performed using a optical microscope. An analysis of the chemical composition (EDS) of the obtained composites was also performed using a scanning electron microscope. Microstructural investigations by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) showed that after 6 hours of sintering at 880 ° C intermetallic compounds: TiCu, TiCu 2 , TiCu 4 , Ti 2 Cu 3 , Ti 3 Cu 4 were formed. The hardness increased in comparison with a sample made of pure copper whereas density and electrical conductivity decreased. The aim of this work was to fabricate copper matrix composites reinforced with titanium particles containing copper- titanium intermetallic phases using powder metallurgy technology and determine the influence of the titanium particles on the properties of the sintered compacts and, finally, analyse the potentials application for friction materials or electric motors brushes.","PeriodicalId":8301,"journal":{"name":"Archives of Foundry Engineering","volume":"591 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135635862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ceramic-Carbon Filters for Molten Metal Alloys Filtration 用于熔融金属合金过滤的陶瓷-碳过滤器

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2019.127101

M. Asłanowicz, A. Ościłowski, B. Lipowska, J. Witek, Z. Robak, R. Muzyka, P. Kowalski, K. Wańczyk

{"title":"Ceramic-Carbon Filters for Molten Metal Alloys Filtration","authors":"M. Asłanowicz, A. Ościłowski, B. Lipowska, J. Witek, Z. Robak, R. Muzyka, P. Kowalski, K. Wańczyk","doi":"10.24425/afe.2019.127101","DOIUrl":"https://doi.org/10.24425/afe.2019.127101","url":null,"abstract":"In 2014 we finished research works involved in the development of a technology for manufacturing innovative ceramic-carbon foam filters for molten metal alloys filtration, which were financed by the National Centre for Research and Development (NCBiR) from INNOTECH programme resources. A batch of the filters produced in this technology was tested in practice in domestic cast steel and cast iron foundries. The trials were successful and foundries declared their intention to purchase the newly-developed filters for the current production of casts. This provided an incentive for “Ferro-Term” Sp. z o.o. to start design works on the prototype line for a serial production of these filters. At the same time, in co-operation with a scientific consortium, including the co-authors of the technology, i.e. the Institute of Ceramics and Building Materials, Refractory Materials Division in Gliwice, Institute for the Chemical Processing of Coal in Zabrze and Foundry Research Institute in Cracow, the company made a successful attempt to raise some funds for the necessary adaptation of the developed technology from the semi-technical to industrial scale from Intelligent Development Operational Programme. In the article we have presented information on the effects of works performed within the framework of the project entitled “Modernization and adaptation of the existing technological line for purposes related to technology verification and start-up of the production of innovative ceramic-carbon filters for molten metal alloy filtration”.","PeriodicalId":8301,"journal":{"name":"Archives of Foundry Engineering","volume":"600 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135636134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Cleaning and Melting of Fine Aluminium Alloy Chips 精细铝合金切屑的热清洗和熔化

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2020.133353

引用次数: 0

Impact Strength of AE-type Alloys High Pressure Die Castings ae型合金高压压铸件的冲击强度

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2020.133321

引用次数: 0

Effect of Process Parameters on Exudation Thickness in Continuous Unidirectional Solidification Tin Bronze Alloy 工艺参数对连续单向凝固锡青铜合金渗液厚度的影响

Archives of Foundry Engineering Pub Date : 2023-11-06 DOI: 10.24425/afe.2019.127123

Jihui Luo, Fang He

引用次数: 3