Prace Instytutu Metalurgii Żelaza最新文献

RESIDUAL LIFE OF REPAIR WELDED JOINTS IN PIPELINES MADE OF 13HMF AFTER USE FOR THE DESIGN OPERATING TIME 管道中修焊接头在设计运行时间使用后的剩余寿命为13hmf

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/IMZ.0137-9941.18.3.1

A. Jasiński, Energopomiar Sp. z o.o., A. Zieliński, H. Purzyńska, Instytut Metalurgii Żelaza im. St. Staszica

引用次数: 2

INFLUENCE OF THE USE OF IRON ORES WITH AN INCREASED CONTENT OF CHLORINE ON THE SINTERING PROCESS 使用氯含量增加的铁矿石对烧结过程的影响

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/IMZ.0137-9941.18.3.2

J. Stecko, Instytut Metalurgii Żelaza im. St. Staszica, M. Niesler

引用次数: 0

OPERATION OF A POWER UNIT AS A PEAK UNIT AND ITS IMPACT ON THE ECONOMY AND RELIABILITY OF THE POWER SYSTEM 电力机组作为调峰机组的运行情况及其对电力系统的经济性和可靠性的影响

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/imz.0137-9941.18.3.6

A. Rusin, Instytut Maszyn i Urządzeń Energetycznych Politechnika Śląska, A. Wojaczek

{"title":"OPERATION OF A POWER UNIT AS A PEAK UNIT AND ITS IMPACT ON THE ECONOMY AND RELIABILITY OF THE POWER SYSTEM","authors":"A. Rusin, Instytut Maszyn i Urządzeń Energetycznych Politechnika Śląska, A. Wojaczek","doi":"10.32730/imz.0137-9941.18.3.6","DOIUrl":"https://doi.org/10.32730/imz.0137-9941.18.3.6","url":null,"abstract":"For several years in Europe, there has been a dynamic change in the structure of energy sources supplying domestic systems. The driving force behind these changes is, among others: efficiency of fuel energy use, costs of electricity generation, safety and reliability of power plant operation, depleting fuel resources and, what has been the most important recently – ecology. The ecological aspect has its supporters and opponents. EU legislation has forced pro-ecological changes in the structure of energy sources. Among renewable sources, the leader is wind energy, the operation of which depends on changing weather conditions. Giving priority to energy from RES forces the operation of some conventional units as a safeguard for wind power plants and causes difficulties in balancing the system’s demand. In August 2015, for the first time in 30 years, the “20th power rationing level” was implemented, which in short means limitations in energy consumption for industrial customers. The steps taken were to prevent the system blackout. The main reason for this state of affairs was the long-term heat, which limited the possibility of cooling the steam-water circulation of power plants. The low water level in the reservoirs limited the production capacity of water power, and the high-pressure windless weather immobilised almost 4.5 GW of power installed in wind power plants. The summer period is also a natural time to carry out scheduled repairs of power units, which has further intensified the power deficit. All these reasons coincided with time, which resulted in the inability to cover the demand for electricity. Figure 1 shows the course of changes in the maximum power demand in the national system in the peAndrzej RUSIN, Adam WOJACZEK","PeriodicalId":331239,"journal":{"name":"Prace Instytutu Metalurgii Żelaza","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129364561","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

APPROACH TO FERROMAGNETIC SATURATION FOR AMORPHOUS FE-BASED ALLOY 非晶铁基合金铁磁饱和的研究

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/IMZ.0137-9941.18.3.5

B. Jeż, Wydział Inżynierii Produkcji i Technologii Materiałów Poli Częstochowska, M. Nabiałek, K. Jeż

{"title":"APPROACH TO FERROMAGNETIC SATURATION FOR AMORPHOUS FE-BASED ALLOY","authors":"B. Jeż, Wydział Inżynierii Produkcji i Technologii Materiałów Poli Częstochowska, M. Nabiałek, K. Jeż","doi":"10.32730/IMZ.0137-9941.18.3.5","DOIUrl":"https://doi.org/10.32730/IMZ.0137-9941.18.3.5","url":null,"abstract":"The paper presents the results of research on the structure and selected properties of magnetic alloys based on Fe. The alloy with the chemical composition Fe36Co36Y8B20 was produced using two methods: forcing and sucking the liquid alloy into a copper mould. The alloy was cast in the form of 10 mm × 5 mm × 0.5 mm tiles. The structure of the obtained alloys was examined using X-ray diffraction. The measured diffractograms are typical for amorphous materials. Using the Faraday magnetic balance, the magnetic saturation polarisation curves as a function of temperature were recorded. The Curie temperature of the created alloys, which amounted to approximately 750 K, was determined on the basis of numerical analysis. The original magnetisation curves and static magnetic hysteresis loops were measured using a vibration magnetometer. The produced alloys had a saturation magnetisation of about 1.1T and a coercive field value of about 200 A/m. The curves of primary magnetisation were analysed using H. Kronmüller’s theory. It was found that the magnetising process in the area called the ‘approach to ferromagnetic saturation’ is related to the rotation of the magnetisation vector around the linear defects of the structure.","PeriodicalId":331239,"journal":{"name":"Prace Instytutu Metalurgii Żelaza","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123879751","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

DILATOMETRIC AND METALLOGRAPHIC STUDIES FOR VERIFYING PHASE TRANSFORMATIONS MESOSCALE MODEL 验证相变中尺度模型的膨胀学和金相学研究

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/IMZ.0137-9941.18.3.4

J. Opara, Instytut Metalurgii Żelaza im. St. Staszica, W. Zalecki

{"title":"DILATOMETRIC AND METALLOGRAPHIC STUDIES FOR VERIFYING PHASE TRANSFORMATIONS MESOSCALE MODEL","authors":"J. Opara, Instytut Metalurgii Żelaza im. St. Staszica, W. Zalecki","doi":"10.32730/IMZ.0137-9941.18.3.4","DOIUrl":"https://doi.org/10.32730/IMZ.0137-9941.18.3.4","url":null,"abstract":"The aim of the study was to perform a series of dilatometric experiments, which would be used to further verify and validate a phase transformation mesoscale model based on the cellular automata method. As a result of the study, a CCT graph for steel S355J was developed, which was the basis for further studies of phase transformation kinetics. Subsequently, the study of microstructure using light and scanning microscopy allowed for a qualitative determination of the occurrence of individual structural components in each dilatometric sample. The results of the quantitative analysis of microstructures were used to determine the average primary austenite grain size, as well as to develop a digital material representation. The studies of phase transformation kinetics were carried out using an original computer tool for quantitative dilatometric analysis. Thus, the curves of volume fraction changes of individual structural components as a function of time and temperature were obtained on the basis of data directly from the recorded dilatometric tests. The presented results of quantitative dilatometric analysis with final volume fractions of individual structural components for various cooling rates are a valuable source of data for the direct validation of the mesoscale model of phase transformations.","PeriodicalId":331239,"journal":{"name":"Prace Instytutu Metalurgii Żelaza","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114808029","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

LABORATORY STUDIES ON THE DEVELOPMENT OF COMPOSITE PELLETS FOR DEEP REFINING OF STEEL FROM NON-METALLIC INCLUSIONS 非金属夹杂物深度炼钢用复合球团的实验室研究

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-12-01 DOI: 10.32730/IMZ.0137-9941.18.3.3

I. Szypuła, Instytut Metalurgii Żelaza im. St. Staszica, B. Zdonek

引用次数: 0

OPRACOWANIE PROGNOZ KRAJOWEJ PRODUKCJI STALI Z UWZGLĘDNIENIEM TECHNOLOGII WYTWARZANIA DO 2022 ROKU

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-11-01 DOI: 10.32730/IMZ.0137-9941.18.2.05

B. Gajdzik, Wydział Inżynierii Materiałowej i Metalurgii Politechnika Gliwicach

引用次数: 1

EFFECT OF METALLURGIC PURITY OF THE 15CrMoV6-10-3 (15HGMV) STEEL ON TECHNOLOGICAL AND MECHANICAL PROPERTIES OF COLD-DEFORMED PRODUCTS 15CrMoV6-10-3 (15HGMV)钢的冶金纯度对冷变形制品工艺性能和力学性能的影响

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-11-01 DOI: 10.32730/imz.0137-9941.18.2.03

M. Burdek, Instytut Metalurgii Żelaza im. St. Staszica, J. Marcisz, J. Stepien

引用次数: 0

INFLUENCE OF HAFNIUM ON HIGH TEMPERATURE OXIDATION OF NiAl AND Ni3Al ALLOYS 铪对NiAl和Ni3Al合金高温氧化的影响

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-11-01 DOI: 10.32730/IMZ.0137-9941.18.2.02

R. Swadźba, Instytut Metalurgii Żelaza im. St. Staszica

引用次数: 2

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A SIMILAR T24 STEEL WELDED JOINT AFTER SERVICE 类似t24钢焊接接头使用后的组织和力学性能

Prace Instytutu Metalurgii Żelaza Pub Date : 2018-11-01 DOI: 10.32730/IMZ.0137-9941.18.2.04

A. Merda, Instytut Inżynierii Materiałowej Politechnika Częstochowska, G. Golański, P. Urbańczyk, Klaudia Klimaszewska

引用次数: 1