Metallurgy and Foundry Engineering最新文献_第8页

HIGH-TEMPERATURE RHEOMETRY OF BLAST FURNACE SYNTHETIC SLAGS DOPED WITH TiO2 AND TiN 掺钛锡高炉合成渣的高温流变学研究

Metallurgy and Foundry Engineering Pub Date : 2015-07-10 DOI: 10.7494/MAFE.2015.41.1.17

P. Migas, M. Ślęzak

{"title":"HIGH-TEMPERATURE RHEOMETRY OF BLAST FURNACE SYNTHETIC SLAGS DOPED WITH TiO2 AND TiN","authors":"P. Migas, M. Ślęzak","doi":"10.7494/MAFE.2015.41.1.17","DOIUrl":"https://doi.org/10.7494/MAFE.2015.41.1.17","url":null,"abstract":"Streszczenie W pracy zaprezentowano wyniki badan przeprowadzone przy uzyciu reometrii wysokotemperaturowej, w oparciu o metode Searle’a. Przeprowadzono analize reologiczną cieklych systemow CaO-SiO 2 -Al 2 O 3 -MgO-TiO 2 slags domieszkowanych TiN,w zakresie 0,1 -0,7 ulamka objetościowego TiN. Badania przeprowadzono w temperaturze 1310-1500 o C, ktora jest chatakterystyczna dla strefy wysokich temperatur wystepującej w wielkim piecu. Glownym celem prowadzonych badan byla analiza mozliwości pomiarow lepkości dla ukladow heterogenicznych (nietypowych dla zastosowan przemyslowych), a nie zdefiniowanie parametrow reologicznych calkowicie cieklych systemow zuzlowych – ktore wykazują podobienstwo do cieczy idealnej Newtona. Slowa kluczowe: lepkośc zuzla, reometria wysokotemperaturowa, azotek tytanu, reologia Abstract The development of the methodology of rotational measurements with a high temperature rheometer using Searle’s method have been conducted. The rheological analysis of liquid systems - CaO-SiO 2 -Al 2 O 3 -MgO-TiO 2 slags, and solid particles of titanium nitride –TiN are presented, within a range of 0.1-0.7 of volume fraction of TiN. The measurements were conducted at a range between 1310-1500 o C, which is typical for high temperature zones in the blast furnace. The main objective of the study was to analyse the possibilities for viscosity measurements in heterogenic systems (not standard within industrial practice), rather than to determine the rheological character of those systems totally liquid blast furnace slags are similar to ideally viscous Newtonian bodies. Key words: slag viscosity, high-temperature rheometry, titanium nitride, rheology","PeriodicalId":18751,"journal":{"name":"Metallurgy and Foundry Engineering","volume":"19 1","pages":"17"},"PeriodicalIF":0.0,"publicationDate":"2015-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79132431","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: 1

Hot cracking of nickel-based superalloy turbine blade 镍基高温合金涡轮叶片的热裂

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.4.181

Ł. Rakoczy, L. Tuz, K. Pańcikiewicz

引用次数: 0

An assessment of the effectiveness of physical curing methods of molding sand bonded by binders based on starch and aluminosilicates

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.3.133

K. Kaczmarska, B. Grabowska, D. Drożyński, Ž. Kurleto, Ł. Szymański

{"title":"An assessment of the effectiveness of physical curing methods of molding sand bonded by binders based on starch and aluminosilicates","authors":"K. Kaczmarska, B. Grabowska, D. Drożyński, Ž. Kurleto, Ł. Szymański","doi":"10.7494/MAFE.2015.41.3.133","DOIUrl":"https://doi.org/10.7494/MAFE.2015.41.3.133","url":null,"abstract":"In this study, based on results of determination selected properties of moulding sand such as permeability, tensile strength and wear resistance, the effectiveness of curing methods: by conventional heating and by innovative of microwave curing were compared. The tested moulding sand used to research was composition of silica sand with a commercial binder in the form of Albertine F/1 (Huttenes Albertus). This binder is a mixture of swellable in water starch derivatives and aluminosilicates. Binding in the moulding sand was occurred by evaporation of the solvent from samples (water). Based on the obtained results were showed a dependence of the properties of moulding sand and selected methods of physical cure, especially after 1 and 4 hours of cured samples storage. However, after 24 hours of samples storage, as apparent from the analysis of the obtained results, both used curing methods are almost the same effective, and marked differences in the properties of the moulding sands were located in the range of measurement uncertainty. Using electromagnetic waves in the microwave range was possible significantly reduce the time of curing and the energy of the drying process.","PeriodicalId":18751,"journal":{"name":"Metallurgy and Foundry Engineering","volume":"8 1","pages":"133"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79635928","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: 2

FTIR METHOD IN STUDIES OF THE RESOL TYPE PHENOL RESIN STRUCTURE IN THE AIR ATMOSPHERE IN SOME TIME INTERVALS 用红外光谱法研究了树脂型苯酚树脂在空气气氛中一定时间间隔内的结构

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.3.107

A. Bobrowski, B. Grabowska

引用次数: 9

NUMERICAL ANALYSIS OF ROD UNIAXIAL TENSION CONSIDERING THERMO-MECHANICAL COUPLING EFFECT 考虑热-力耦合效应的杆单轴拉伸数值分析

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.4.189

Hongnam Nguyen, T. Niezgoda, A. Derewońko, J. Jachimowicz

引用次数: 0

STRUCTURAL CONSTRUCTION OF THE HARDENERS WITH DIFFERENT HARDENING RATES INTENDED FOR GEOPOLIMER BINDER SYSTEMS USED FOR THE PREPARATION OF MOULDING SANDS 用于型砂制备的地高聚物粘结剂体系中具有不同硬化速率的固化剂的结构构造

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.3.115

A. Bobrowski, B. Grabowska, K. Kaczmarska

引用次数: 0

THEORETICAL ANALYSIS OF THE AZ31 MAGNESIUM ALLOY DEFORMATION PROCESS BY A MODIFIED METHOD OF ANGULAR EXTRUSION 改进角挤压法对az31镁合金变形过程的理论分析

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.3.123

T. Bajor, M. Krakowiak, S. Berski

引用次数: 0

Mechanical properties and structure evolution of the AZ91 magnesium alloy after hot rolling and annealing AZ91镁合金热轧退火后的力学性能与组织演变

Metallurgy and Foundry Engineering Pub Date : 2015-01-01 DOI: 10.7494/MAFE.2015.41.3.143

B. Sułkowski, G. Boczkal

{"title":"Mechanical properties and structure evolution of the AZ91 magnesium alloy after hot rolling and annealing","authors":"B. Sułkowski, G. Boczkal","doi":"10.7494/MAFE.2015.41.3.143","DOIUrl":"https://doi.org/10.7494/MAFE.2015.41.3.143","url":null,"abstract":"The AZ91 magnesium alloy was processed up to 87.5% of total thickness reduction in several thermodynamic routes, consisted of hot rolling and intermediate annealing. The hot-rolling process was performed at a high strain rate equal to 1.6 s−1 and at a temperature of 430°C. The intermediate annealing was performed at 430°C for 15 minutes after each route. It was found that, during hot rolling, the hardness of the material increased from 32 HV to 40 HV, and the structure investigations showed a huge amount of twins formed inside the grains (which were not observed after annealing). Tensile tests have shown strong anisotropy in mechanical properties of the “as-rolled” samples dependent on the orientation between tension direction (TD) and rolling direction (RD). The samples with TD perpendicular to RD proved higher ultimate tensile strength (UTS) and (on the other hand) worse plastic properties as compared to the samples with TD parallel to RD. The annealing has an effect on the reduction of mechanical properties anisotropy. X-ray investigations have shown texture changes from the basal type with the additional (0001) component for “as-rolled” samples to the texture with the main (0001) component for annealed samples. The texture changes had a great impact on the anisotropy of mechanical properties of the investigated AZ91 magnesium alloy.","PeriodicalId":18751,"journal":{"name":"Metallurgy and Foundry Engineering","volume":"1 1","pages":"143"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90103544","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: 2

Studies on obtaining Cu-CNT composites by continuous casting method 连铸法制备Cu-CNT复合材料的研究

Metallurgy and Foundry Engineering Pub Date : 2014-11-18 DOI: 10.7494/MAFE.2014.40.2.83

P. Kwaśniewski, G. Kiesiewicz

引用次数: 4

Microstructure and mechanical behavior of a CO2 laser and TIG welded 904L steel CO2激光与TIG焊接904L钢的组织与力学行为

Metallurgy and Foundry Engineering Pub Date : 2014-11-18 DOI: 10.7494/MAFE.2014.40.2.69

Z. Bogdanowicz, P. Jóźwik, B. Nasiłowska

引用次数: 11