Tribology Management and Applications in China Steel

2015 ◽  
Vol 642 ◽  
pp. 168-173
Author(s):  
Yi Sheng Huang

Mass amount of equipment and harsh operating condition in steel plants require comprehensive management system, along with lubrication techniques such as lubricating oil quality improvement, used oil monitoring, etc., to ensure proper tribological condition for all mechanical components. In that case, cost management is essential to evaluate the performance of tribology management. This paper is intended to discuss the system establishment, scope of work and actual applications of tribology management in China Steel.

1989 ◽  
Vol 43 (1) ◽  
pp. 55-60 ◽  
Author(s):  
A. D. Stuart ◽  
S. M. Trotman ◽  
K. J. Doolan ◽  
P. M. Fredericks

Used lubricating oils have been examined by a number of spectroscopic techniques to assess whether it might be possible to improve turn-around time for laboratory analyses or to develop a simple oil quality sensor which could be used in a service workshop. Investigation shows that the development of an oil quality sensor based on discrete wavenumber measurements in the mid-infrared region would not be warranted, but heptane-insolubles can be estimated from a single measurement in the near-infrared region, and this could form the basis of a simple sensor. Considerable information about the quality of a used oil is available through a thorough examination of its mid-infrared spectrum. Use of the computer program CIRCOM, which employs factor analysis followed by multiple linear regression, allowed useful correlations to be obtained for n-heptane—insolubles level and viscosity and total base number of the oil sample. This supplements and extends the previously described methods for obtaining information such as fuel and water levels by IR analysis.


Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 748
Author(s):  
Zhenzhen Liu ◽  
Yan Liu ◽  
Hongfu Zuo ◽  
Han Wang ◽  
Hang Fei

Lubricating oil monitoring technology is a commonly used method in aeroengine condition monitoring, which includes particle counting technology, as well as spectral and ferrography technology in offline monitoring. However, these technologies only analyze the characteristics of wear particles and rely on physical and chemical analysis techniques to monitor the oil quality. In order to further advance offline monitoring technology, this paper explores the potential role of differences in wear particle kinematic characteristics in recognizing changes in wear particle diameter and oil viscosity. Firstly, a kinematic force analysis of the wear particles in the microfluid was carried out. Accordingly, a microfluidic channel conducive to observing the movement characteristics of particles was designed. Then, the wear particle kinematic analysis system (WKAS) was designed and fabricated. Secondly, a real-time tracking velocity measurement algorithm was developed by using the Gaussian mixture model (GMM) and the blob-tracking algorithm. Lastly, the WKAS was applied to a pin–disc tester, and the experimental results show that there is a corresponding relationship between the velocity of the particles and their diameter and the oil viscosity. Therefore, WKAS provides a new research idea for intelligent aeroengine lubricating oil monitoring technology. Future work is needed to establish a quantitative relationship between wear particle velocity and particle diameter, density, and oil viscosity.


Author(s):  
Larysa Bodnar ◽  
Petro Koval ◽  
Sergii Stepanov ◽  
Liudmyla Panibratets

A significant part of Ukrainian bridges on public roads is operated for more than 30 years (94 %). At the same time, the traffic volume and the weight of vehicles has increased significantly. Insufficient level of bridges maintenance funding leads to the deterioration of their technical state. The ways to ensure reliable and safe operation of bridges are considered. The procedure for determining the predicted operational status of the elements and the bridge in general, which has a scientific novelty, is proposed. In the software complex, Analytical Expert Bridges Management System (AESUM), is a function that allows tracking the changes in the operational status of bridges both in Ukraine and in each region separately. The given algorithm of the procedure for determining the predicted state of the bridge using a degradation model is described using the Nassie-Schneidermann diagram. The model of the degradation of the bridge performance which is adopted in Ukraine as a normative one, and the algorithm for its adaptation to the AESUM program complex with the function to ensure the probabilistic predicted operating condition of the bridges in the automatic mode is presented. This makes it possible, even in case of unsatisfactory performance of surveys, to have the predicted lifetime of bridges at the required time. For each bridge element it is possible to determine the residual time of operation that will allow predict the state of the elements of the structure for a certain period of time in the future. Significant interest for specialists calls for the approaches to the development of orientated perspective plans for bridge inspection and monitoring of changes in the operational status of bridges for 2009-2018 in Ukraine. For the analysis of the state of the bridge economy, the information is available on the distribution of bridges by operating state related to the administrative significance of roads, by road categories and by materials of the structures. Determining the operating state of the bridge is an important condition for making the qualified decisions as regards its maintenance. The Analytical Expert Bridges Management System (AESUM) which is implemented in Ukraine, stores the data on the monitoring the status of bridges and performs the necessary procedures to maintain them in a reliable and safe operating condition. An important result of the work is the ability to determine the distribution of bridges on the public roads of Ukraine, according to operating conditions established in the program complex of AESUM, which is presented in accordance with the data of the current year. In conditions of limited funding and in case of unsatisfactory performance of surveys, it is possible to make the reasonable management decisions regarding the repair and the reconstruction of bridges. Keywords: bridge management system, operating condition, predicted operating condition, model of degradation, bridge survey plan, highway bridge.


The research is actual, has a theoretical and applied nature. Theoretical developments at cost management branch of economic organization were illustrated by practical examples. In the work the follow methods are used: abstract-logical, methods of induction and deduction, system and situate approaches, methods of comparative analysis, analysis of breakeven, monographic analysis. The follow sources of information were used: literature, the results of the experimental investigations, carried out in Verkh-nevolzhsky Federal Agrarian Research Centre, observations, carried out at an agricultural organization. Theoretical structural model of cost management was created in a functional way, relationship between elements were designated in it, as well as driving forces of its realization were determined. Such terms as “cost management ” and «management accounting» were specified. The paradigm of a relation to cost process was described. Approaches to realization of cost management system of organization on the basis offlexibility principle were developed. The most important of them are: application of applied programs packages and special program means for computer, organization of feedback, account of functional relationship of cost with production results, cost accounting on elements, places of origin, carriers and centers of responsibility, as well as interactive approach. Some examples which show possibilities of using some instruments of cost management and management accounting for generation of management solutions were described. These instruments are: analysis and planning on the basis of standards of constant and variable costs and flexible cost management in interrelations to other subsystems in management system of organization (in this case it is with technology management. The work is of theoretical and practical significance.


2020 ◽  
Author(s):  
Devashish Sen ◽  
Rohini Srivastava ◽  
Nitin Sahai ◽  
R. P. Tewari ◽  
Basant Kumar

2013 ◽  
Vol 699 ◽  
pp. 735-741 ◽  
Author(s):  
Ambali Saka Abdulkareem ◽  
Edison Muzenda ◽  
Ayo Samuel Afolabi

Acid treatment is one of the cheapest techniques and least applicable processes in the recycling of used lubricating oils. In this work, the performance of sulphuric acid in the treatment used oil was studied. The effects of the critical treatment parameters (acid volume, concentration of the acid, treatment temperature, stirring time and treatment time) were investigated by varying one treatment parameter at a time and analysing metal content in the sample of the treated oil using atomic absorption spectrometry (ASS). Thereafter, an optimal solution was determined by the combination of the optimum values of each treatment parameters. The original conventional treatment parameter values, resulted in 13.2 ppm and thereafter was optimised to 11 ppm this showed a definite improvement in efficiency. This result is also comparable to other data obtained in previously studied work which employed the same conventional treatment parameters. The optimal solution is within 10% variation as compared the standard individual metal content which ranges 0-10 ppm.


1989 ◽  
Vol 22 (4) ◽  
pp. 298
Author(s):  
Ashworth & Co Ltd

2021 ◽  
Author(s):  
Mourougavelou Vaithianathan

The cost management system is a powerful tool for managers to understand manufacturing plant performance. It is essential for any organization to develop a cost management system to estimate the product cost and to account actual cost spent for the product manufacturing. The Activity Based Costing (ABC) system has recently attracted the attention of many companies and is considered to provide better information about the cost pattern and the relationship between resources and activities. However, a survey of earlier research reveals that there are several difficulties to estimate the true product cost due to selection of overhead drivers to activities. To overcome these difficulties Temporal-ABC has been developed by Dr. K.D. Tham. In the first part of the report, costing system implementation issues are studied through real-time case studies. Then, research has been conducted and web-based proptotype application is developed using Temporal-ABC through collaboration with a world-class electronics industry - Celestica Inc. Toronto, Canada. The developed prototype demonstrates the application of Temporal-ABC for cost estimation at Celestica.


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