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refractory materials crack service life

  • Service life prediction for refractory materials ...

    2008-6-1 · Service life prediction models for refractory plates, from measured values of ultrasonic velocity and surface damage analysis, were proposed and validated. ... crack stopping is an extremely important process in refractory structures; for unless crack arrest occurs, there will be catastrophic failure every time that thermal-shock damage is ...

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  • Service life prediction for refractory materials —

    Service life prediction for refractory materials. Dino Boccaccini, M. Cannio, T. D. Volkov-Husoviæ, E. Kamseu, M. Romagnoli, P. Veronesi, C. Leonelli, I. Dlouhy, A. R. Boccaccini ... ultrasonic velocity, microstructure, crack-propagation behavior and thermal-shock resistance was discussed. ... shows the highest gradient of the investigated ...

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  • (PDF) Service life prediction for refractory materials ...

    Service life prediction models for refractory assess the material degradation with increasing number of plates, from measured values of ultrasonic velocity and thermal-shock cycles and specimen damage was monitored surface damage analysis, were proposed and validated. using image analysis to obtain further evidence of material degradation.

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  • Service life prediction for refractory materials |

    Request PDF | Service life prediction for refractory materials | Ultrasonic pulse velocity testing and image analysis were used to predict the thermal stability of cordierite–mullite refractories.

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  • (PDF) Service life prediction for refractory materials ...

    Ultrasonic pulse velocity testing and image analysis were used to predict the thermal stability of cordierite–mullite refractories. Two compositions used as substrates in fast firing of porcelain whiteware, characterized by different microstructure

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  • Methods for Service Life Prediction in Refractory

    Refractories are heat-resistant materials used in almost all processes involving high temperatures and/or corrosive environment. The testing of refractories has involved historically mostly destructive test methods for the determination of thermal shock resistance both …

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  • How To Increase The Service Life Of Refractories?

    2020-5-9 · The use of refractory lining to resist high-temperature erosion can protect the facility from being damaged, but due to the selection of refractory materials and various factors, the use effect is not ideal. Today we will focus on how to increase the service life of refractory materials. 1.Reasonable plan a.

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  • Service life prediction for refractory materials, Journal ...

    2008-4-3 · Read 'Service life prediction for refractory materials, Journal of Materials Science' on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  • The Key to Extending the Service Life of a Refractory ...

    increase in PSZ castables may be explained by crack nucleation and propagation while such phenomena do not occur in WFA castable. Keywords: Thermal shock, impulse excitation technique, partially stabilized zirconia, Young‘s modulus, damping I. Introduction Service life evaluation and improvement of refractory

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  • Estimation of Damage in Refractory Materials after ...

    increase in PSZ castables may be explained by crack nucleation and propagation while such phenomena do not occur in WFA castable. Keywords: Thermal shock, impulse excitation technique, partially stabilized zirconia, Young‘s modulus, damping I. Introduction Service life evaluation and improvement of refractory

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  • New Techniques for the Determination of Refractory ...

    2021-6-2 · peratures of the refractory materials. 1.2 Novel approaches towards improved service-life prognoses In recent years, novel procedures have been developed to theoretically describe and experimentally detect crack initiation and propagation upon thermal cycling. These methods are often based on the depend-ency of ultrasound velocity on the number

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  • The Key to Extending the Service Life of a Refractory ...

    2020-8-12 · A significant concern when manufacturing aluminum metal is the practical service life of the furnace. The service life is largely driven by the refractory lining’s ability to resist the various operating conditions within the furnace, such as high temperature, temperature variation, chemical corrosion and mechanical abrasion. Ideally, a single-refractory composition would be capable of ...

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  • Life Cycle Analysis - htl-enertherm.eu

    In order to determine the thermal shock resistance, refractory bricks are tested at HTL by means of thermal shock experiments. In addition, the relative degree of damage can be measured at HTL by measuring the residual sound velocity with a mobile ultrasonic measuring device in order to determine the service life by crack formation in the refractory brick more precisely.

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  • Assessment of viscoelastic crack bridging toughening

    2008-1-1 · The refractory materials exhibit different thermal shock failure mechanisms, i.e. RSE being characterized by early crack initiation and slow crack propagation, while BRT exhibiting delayed crack initiation and fast fracture propagation.7, 10 The best performance under service life relevant thermal shock conditions was achieved with BRT ...

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  • New Techniques for the Determination of Refractory ...

    Keywords: refractory service life, refractory corrosion, thermo-optical measuring devices Fraunhofer Center HTL in Bayreuth (Ger-many). 1.1 Established techniques to characterize refractory lifetimes In order to characterize thermal shock re-sistance and, in particular, to enable predic-tions of the lifetime of refractory compon-

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  • Prediction of Service Life of Cordierite-Mullite ...

    Prediction of Service Life of Cordierite-Mullite Refractory Materials by Nondestructive Methods. A I P Conference Proceedings Series, 973, 449-454 ... M. ; Veronesi, P. ; Dlouhy, I. ; Boccaccini, A.R. ; Leonelli, C. Prediction of Service Life of Cordierite-Mullite Refractory Materials by Nondestructive Methods. In: A I P Conference ...

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  • New technology of refractory materials for

    New technology of refractory materials for steelmaking converter Jan 04, 2021. 1. Development and application of high-performance lining bricks. Magnesia-carbon bricks are widely used as converter lining bricks because of their excellent slag erosion resistance, thermal shock resistance, spalling resistance and abrasion resistance, and good stability at high temperatures.

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  • Refractory Solutions for Aluminum Melting Furnaces ...

    2021-4-26 · The design of refractory materials for the lining of aluminum melting furnaces should be reasonable, and the refractory materials must fully consider the differences in the side wall of the molten pool, the working conditions of the furnace bottom and the load changes, and the specific structural design is more reasonable.

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  • Technical level and development trend of refractory

    2021-3-4 · In order to adapt to the increasing development of environmental protection industry and meet the needs of incinerators, various high-quality refractory materials have been developed and used in various countries in the world, and remarkable results have been achieved. It has become urgent to continue to research and develop refractory materials with excellent performance.

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  • The Crack Inspection of Refractory

    In order to determine the thermal shock resistance, refractory bricks are tested at HTL by means of thermal shock experiments. In addition, the relative degree of damage can be measured at HTL by measuring the residual sound velocity with a mobile ultrasonic measuring device in order to determine the service life by crack formation in the refractory brick more precisely.

    Get Price
  • Life Cycle Analysis - htl-enertherm.eu

    Keywords: refractory service life, refractory corrosion, thermo-optical measuring devices Fraunhofer Center HTL in Bayreuth (Ger-many). 1.1 Established techniques to characterize refractory lifetimes In order to characterize thermal shock re-sistance and, in particular, to enable predic-tions of the lifetime of refractory compon-

    Get Price
  • New Techniques for the Determination of Refractory ...

    2006-12-6 · Reliability and long service life are the basic requirements when materials are introduced into their ... are the cordierite-mullite refractory materials investi-gated in a number of investigations [2-5]. ... ated crack and crack propagation continued trough the …

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  • FRACTURE BEHAVIOUR OF REFRACTORY CERAMICS

    Prediction of Service Life of Cordierite-Mullite Refractory Materials by Nondestructive Methods. A I P Conference Proceedings Series, 973, 449-454 ... M. ; Veronesi, P. ; Dlouhy, I. ; Boccaccini, A.R. ; Leonelli, C. Prediction of Service Life of Cordierite-Mullite Refractory Materials by Nondestructive Methods. In: A I P Conference ...

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  • Prediction of Service Life of Cordierite-Mullite ...

    2019-5-9 · Whilst the longevity of fireclay is subject to the quality of the materials and processes used by boiler manufacturers, there are some practises that will cause the parts to wear away and crack at an accelerated rate. Maintenance – When ash residue builds up in the combustion chamber a corrosive slag can form and wear down the refractory lining.

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  • Factors Affect Cement Kiln Bricks’ Service Life - RS Kiln ...

    2021-3-16 · Service life of the middle part. If the oxidized pellet contains alkali metal, it has to be calcined in rotary kiln, so it can be considered to replace refractory to stop alkali metal corrosion. The magnesia chrome refractory is. Magnesium sand, magnesium chromium sand and other materials are calcined at high temperature, and are weak alkali ...

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  • 4 Things You Should Know About Refractory Works –

    2018-6-1 · The refractory lining was completely dislodged from inner steel shell in main burner chamber which confirms that internal refractory lining was completely under high temperature service. In addition to observed crack at refractory mid wall and dis-bonding of refractory lining with steel shell, hydrocarbon deposits were also found at main burner ...

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  • Function, Failure Reason And Improvement Measures

    2020-8-10 · Zhengzhou Zhengnai Import and Export Trade co. LTD was established in 2019, is a subsidiary of Zhengzhou Zhengnai Industry co., LTD.Office address is No.128, Changjiang road, Erqi district,Zhengzhou city, Henan province, China.Business scope: import and export of goods or technology; Technical consultation and service for refractory materials; Sales: refractory materials, insulation materials ...

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  • Refractory Concrete Reinforced With Stainless Steel

    Considerable emphasis has been placed on measuring fracture energies of refractory materials to reduce cracking and improve in-service life. Fracture energies offer much more flexibility as the linear elastic assumptions need not be applied to direct energy principles for crack initiation or propagation.

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  • FRACTURE BEHAVIOUR OF REFRACTORY CERAMICS

    2006-12-6 · Reliability and long service life are the basic requirements when materials are introduced into their ... are the cordierite-mullite refractory materials investi-gated in a number of investigations [2-5]. ... ated crack and crack propagation continued trough the …

    Get Price
  • Crack resistance of refractory steels and alloys under ...

    OSTI.GOV Journal Article: Crack resistance of refractory steels and alloys under creep conditions Title: Crack resistance of refractory steels and alloys under creep conditions Full Record

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  • The Understanding of the Microstructural Changes of ...

    2011-6-10 · The service life evaluation and improvement of refractory castables for applications in the metallurgical or the iron and steel industry with regard to physical aspects like thermal shocks and chemical ones like corrosive reac-tions is continuously investigated. The choice of available raw materials for high perform-

    Get Price
  • 4 Things You Should Know About Refractory Works –

    2019-5-9 · Whilst the longevity of fireclay is subject to the quality of the materials and processes used by boiler manufacturers, there are some practises that will cause the parts to wear away and crack at an accelerated rate. Maintenance – When ash residue builds up in the combustion chamber a corrosive slag can form and wear down the refractory lining.

    Get Price
  • Crash Course on Refractory Products for a New Plant ...

    Crash Course on Refractory Products for a New Plant Manager. Refractory products are often called the “backbone of industry” because they’re used during the heat and chemical processing of all commodities. Our buildings, transportation infrastructure, autos, utilities and thousands of other products couldn’t be created without them.

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  • Rsearch the mechanism of refractory castable oven

    2017-11-18 · Rsearch the mechanism of refractory castable oven crack 1.Preface Modern metallurgy furnace building materials, refractory castable are used more and more, it is made up of refractory aggregate and binder mixing dry, mainly adopts hydraulic binder, by adding water or other liquid mixing after use, to casting, vibrating and tamping method, without heating sclerosis of solidification.

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  • Several types of damage commonly found in

    When refractory materials are used in glass kiln, they will be seriously damaged due to high temperature, flame, powder, atmosphere, air flow and liquid flow, which greatly affects the service life of the kiln. From the kiln, the use of refractory materials in the kiln begins, and improper operation will also cause large, even severe damage to ...

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  • Engineering resilience with precast monolithic

    2020-9-18 · Cement Rotary Kiln. First, let’s take a look at the kiln mouth. It is best to use refractory materials resistant to thermal shock at the kiln mouth. Such as wear-resistant and heat-resistant high-alumina bricks or steel fiber reinforced castables and low-cement high-alumina castables. However, in large kilns with extremely high kiln mouth ...

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  • How to Prolong Cement Kiln Bricks’ Service Life - RS

    2021-4-13 · Using requirements of refractory materials for boiler ... but the long service life, good performance, and then two kinds of material price is low, but performance in general, and short service life. ... But this kind of material in its solidification time is long, easy to dry shrinkage crack, thus for the construction and maintenance of a ...

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  • Using requirements of refractory materials for boiler ...

    2014-7-8 · gasifier refractory materials; which are used to protect the outer steel containment shell from gasification environment attack, suffer from chemical dissolution and slag penetration causing chemical corrosion and structural spalling. The effects of chemical corrosion and structural spalling are to reduce refractory service life.

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  • Gasifier Refractories, Coal Slags, and Their Interaction

    2011-6-10 · The service life evaluation and improvement of refractory castables for applications in the metallurgical or the iron and steel industry with regard to physical aspects like thermal shocks and chemical ones like corrosive reac-tions is continuously investigated. The choice of available raw materials for high perform-

    Get Price
  • The Understanding of the Microstructural Changes of ...

    2009-10-15 · process fluid, and provide an economic service life. Refractory lining design begins with selecting lining materials based on chemical stability in the process environment. The thickness of the different refractory layers is initially determined using 1D heat transfer calculations. If the membrane or shell temperature is

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  • Stress development in refractory due to the rate of ...

    When refractory materials are used in glass kiln, they will be seriously damaged due to high temperature, flame, powder, atmosphere, air flow and liquid flow, which greatly affects the service life of the kiln. From the kiln, the use of refractory materials in the kiln begins, and improper operation will also cause large, even severe damage to ...

    Get Price
  • Several types of damage commonly found in

    2011-11-20 · refractory linings and configura-tions. Another valuable service Harbison-Walker offers is perfor-mance assessments. This pro-cess is usually aimed at identify-ing causes for deteriorating refractory performance resulting from changing operating condi-tions within a customer’s plant. Most often, diagnoses are based on post-mortem analyses of used

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  • Refractory Sagger - Silicon Carbide pipes, beam,

    2016-11-25 · With the development of refractory technology, the use of MgO-C brick brick tube is more common, the main use of tiles outside the taphole block brick, so that the service life is generally 140 to ...

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