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Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 17-24 doi: 10.1007/s11465-018-0480-3

Abstract:

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages,In this paper, the features of shaft part rolling are introduced along with the working principles oftwo main shaft part rolling technologies, namely, cross wedge rolling (CWR) and skew rolling (SR).Finally, the latest developments in shaft part rolling are presented, including SR steel balls, preciseAlthough the shaft part rolling technology has been widely used in China, it only accounts for about

Keywords： cross wedge rolling     skew rolling     near-net rolling     shaft part    

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Time Series Diagnosing Analysis for the Fatigue Crack of Large-scale and Heavyburden Supporting Shafts

Li Xuejun,Bin Guangfu,Wang Yuqing

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 50-53

Abstract:

Because of the unobserved sudden fatigue failure of the large-scale and heavyburden supporting shafts, the normal product line is affected seriously. Based on analyzing the relation ship between this type of supporting shafts construction characteristics and vibration signal characteristic, the model of the vibration signal is established by the method of time series.Residual (σa2) and normal residue square sum (NRSS) are adopted to identify the fault state, and the degree of supporting shafts' fatigue crack is diagnosed effectively.The result of experiment shows that the method of time series using σa2 and NRSS as the index to diagnose the fatigue crack of large-scale and heavyburden supporting shafts is more sensitive and effective than the normal method using time-frequency domain of amplitude, and has very strong practicability.

Keywords： large-scale and heavyburden machine     supporting shaft     concealment part     fatigue crack     time series    

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The Research of Steel and Glass Fiber Reinforced Plastic Guide of Mining Shaft

Zeng Xiantao,Guo Jinpu

Strategic Study of CAE 2002, Volume 4, Issue 12,   Pages 71-76

Abstract: fiber reinforced plastic has been developed and researched in view of the present situation that the shaftThe corrosion resistance of the guide can meet the needs of mining shaft use, and the corrosion resistant

Keywords： mining shaft     glass fiber reinforced plastic (GFRP)     guide    

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Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Strategic Study of CAE 2012, Volume 14, Issue 2,   Pages 80-84

Abstract:

For searching the stress and deformation law of blended shaft-liningduring construction and initial operation, sensors were buried in interior and exterior wall of shaft-liningWith the law, we can forecast the long-term safety of shaft lining and provide scientific decision evidence

Keywords： shaft lining monitoring     thick topsoil     strain     additional force    

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Monitor and control of ultra deep shaft safety and efficient construction

Shen Weian,Liang Hengchang,Zhao Guangsi

Strategic Study of CAE 2012, Volume 14, Issue 2,   Pages 45-48

Abstract:

With the increase of the depth of shaft construction, shaft wall safetyTo ensure the safety and shaft wall construction safety and other factors, the real-time control andBase on the background of Benxi Dataigou Iron Mine's ultra-deep shaft with diameter of 6.5 m, depthof 1 640 m, the paper proposed methods to monitor the shaft wall safety and the condition of constructionThe monitor system implementation plan may provide detailed information for ultradeep shaft efficient

Keywords： ultra deep shaft     safety     information construction     monitor and control    

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Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 1-12 doi: 10.1007/s11465-007-0001-2

Abstract: Thin films and multi-layered coatings comprised of different classes of materials are often used for various functional devices. The thermo-mechanical integrity of these systems is becoming a major concern and is strongly related to the residual stresses because of the fabrication processes. In this paper, the sources of the residual stresses in the coating-based systems and the concept of misfit strain were briefly reviewed. Analytical models were developed to predict the residual stresses in multi-layered film structures or coating-based systems using the force and moment balances. In addition, the residual stress distributions in the func tionally and compositionally graded coatings were also analyzed.

Keywords： briefly     different     thermo-mechanical integrity     addition     residual    

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Process development for green part printing using binder jetting additive manufacturing

Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 504-512 doi: 10.1007/s11465-018-0508-8

Abstract: In this work, the process design considerations for BJ-AM in green part fabrication were discussed incould significantly affect the printing quality of the green parts such as geometrical accuracy and part

Keywords： binder jetting     additive manufacturing     green part     process optimization     process development    

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Improvement of part-load performance of gas turbine by adjusting compressor inlet air temperature and

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1000-1016 doi: 10.1007/s11708-021-0746-z

Abstract: A novel adjusting method for improving gas turbine (GT) efficiency and surge margin (SM) under part-loadThe equilibrium running lines calculated through the calculation method involve three part-load conditionsIn addition, inlet air heating has a considerable potential for the improvement of part-load performance

Keywords： inlet air temperature     inlet guide vane (IGV) opening     part-load     equilibrium running line     gas turbine    

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Study on shaft drilling and blasting construction risk analysis and countermeasures of Bohai Strait tunnel

Zhang Wenxin and Zou Chong

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 101-106

Abstract:

In view of the shaft construction risk analysis of Bohai Strait tunnelthe sequence in turn from low to high is supporting structure failure risk, natural disaster risk and shaftConsidering the influences of key risk and other risks on the shaft construction,we put forward responsemeasures about shaft construction risk of Bohai Stiait tunnel from the geological forecast,shaft hoistingprevention, shaft supporting structure for quality control and the establishment of the shaft system

Keywords： strait tunnel     shaft construction     drilling and blasting method     risk analysis     response measures    

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Taking Warning from the Eastern Part Elegant Landscape Maturing Slowly——On Landscape Architectural Developmentin the Western Part of China

Meng Zhaozhen

Strategic Study of CAE 2000, Volume 2, Issue 10,   Pages 56-58

Abstract:

First of all, it is necessary carried out comprehensive national land planning and individual design from the high plane of harmonious sustainable development between man's production and natural environment.

The essence of cities at present should be an environment for human settlement and living. The relation between urbanization process and natural environment is neither to diametrically oppose nor to damage each other. The image of the city is not only buildings and streets but also a mix of cities, architecture and natural environment, i.e.an artificial beauty merging into nature. Man's bright future will be to put cities and buildings into green environment.

The most important thing for construction of scenic and historical places and city parks and gardens is now to protect the natural resources of the site. It is wrong to follow limelight from others. Each city should creates its own feature from local natural environment and cultural tradition.

Elegant landscape will mature slowly. Great thing always gets a late prosperous termination of an affair.

Keywords： urbanization process     scenic and historical places     urban parks and gardens    

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Construction technology of well shaft tower construction engineering

Yang Yiming,Huang Jiapin,Shen Xihua,Cao Yueqin and Ma Zhimin

Strategic Study of CAE 2012, Volume 14, Issue 2,   Pages 85-89

Abstract:

Taking the construction of the main shaft hoisting in Longgu 1# CoalMine for example, the organizational characteristics of the well shaft tower and equipments, elevatorother parallel operation of installation construction were introduced, and the technologies of tower shaft

Keywords： parallel operations     well tower sliding     shaft equipment     elevator installation     construction technology    

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The vertical shaft construction-technology of the cutter transformation of large-diameter shield

Wang Zhenfei,He Feng,He Shanning

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 103-107

Abstract:

Taking vertical shaft construction of the cutter transformation of theconstruction of cutter structure transformation under complex boundary conditions for large-diameter shield shaftPractice about how to ensure the structural safety of the shaft as well as well-coordinated shield construction

Keywords： large-diameter shield     transformation shaft     complex conditions    

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Part-load, startup, and shutdown strategies of a solid oxide fuel cell-gas turbine hybrid system

Yang LI, Yiwu WENG, Shilie WENG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 181-194 doi: 10.1007/s11708-011-0149-7

Abstract: Three different part-load strategies are introduced and used to analyze the part-load performance of

Keywords： solid oxide fuel cell (SOFC)     hybrid system     part-load strategy     startup     shutdown    

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Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 339-353 doi: 10.1007/s11708-018-0596-5

Abstract: ., the part load ratio characteristics and the corresponding gas energy consumption patterns are notIn this study, the part load ratio and the operating characteristics of gas boiler have been analyzedsignificant portions of total operating hours, heating load and energy consumption has been found to be in a partof 0 through 40% and thus energy consumption is significantly affected by boiler efficiency at low partThis suggests that boiler operation at the part load is an important factor in commercial buildings.

Keywords： EnergyPlus     boiler     part load ratio     gas consumption     office building     boiler staging    

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Assessment of Mechanical Characteristic for Reinforced Concrete Precast Arc Shaft Lining

Rong Chuanxin,Wang Xiuxi,Cheng Hua

Strategic Study of CAE 2005, Volume 7, Issue 7,   Pages 43-49

Abstract:

Assessment of mechanical characteristic for reinforced concrete precast arc shaft lining is achievedAt the same time, the load carrying capacity of the high strength reinforced concrete precast arc shaftTherefore for designing the high and strong reinforced concrete precast arc shaft lining, the ratio of

Keywords： high strength reinforced concrete precast arc shaft lining     mechanical characteristic     finite element method    

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Title Author Date Type Operation

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Journal Article

Time Series Diagnosing Analysis for the Fatigue Crack of Large-scale and Heavyburden Supporting Shafts

Li Xuejun,Bin Guangfu,Wang Yuqing

Journal Article

The Research of Steel and Glass Fiber Reinforced Plastic Guide of Mining Shaft

Zeng Xiantao,Guo Jinpu

Journal Article

Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Journal Article

Monitor and control of ultra deep shaft safety and efficient construction

Shen Weian,Liang Hengchang,Zhao Guangsi

Journal Article

Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Journal Article

Process development for green part printing using binder jetting additive manufacturing

Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG

Journal Article

Improvement of part-load performance of gas turbine by adjusting compressor inlet air temperature and

Journal Article

Study on shaft drilling and blasting construction risk analysis and countermeasures of Bohai Strait tunnel

Zhang Wenxin and Zou Chong

Journal Article

Taking Warning from the Eastern Part Elegant Landscape Maturing Slowly——On Landscape Architectural Developmentin the Western Part of China

Meng Zhaozhen

Journal Article

Construction technology of well shaft tower construction engineering

Yang Yiming,Huang Jiapin,Shen Xihua,Cao Yueqin and Ma Zhimin

Journal Article

The vertical shaft construction-technology of the cutter transformation of large-diameter shield

Wang Zhenfei,He Feng,He Shanning

Journal Article

Part-load, startup, and shutdown strategies of a solid oxide fuel cell-gas turbine hybrid system

Yang LI, Yiwu WENG, Shilie WENG

Journal Article

Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Journal Article

Assessment of Mechanical Characteristic for Reinforced Concrete Precast Arc Shaft Lining

Rong Chuanxin,Wang Xiuxi,Cheng Hua

Journal Article