Mitreva, Elizabeta and Chepujnoska, Violeta (2009) Designing the TQM system functions towards the protection of environment. In: Seminar of Ecology – 2009, 23-24 April, 2009, Sofia, Bulgaria.
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Abstract
The implementation of the TQM (Total Quality Management) strategy as well as the correlation analysis as a mathematic method of quality projection of the manufacturing processes regarding the environment, the technological process of steel hardening becomes optimised by the use of the MATLAB program, simultaneously having in mind the costs of the working.
The steel hardening is executed within a temperature interval ranging from (820 – 860) °C in a (5 – 7) % solution of NaOH, and the normalization of the steel is accomplished on a (600 – 610) °C temperature.
By the help of these methods, the optimal values of the parameters concerning the steel hardening process are determined, i.e. a temperature of 820 °C as well as a concentration of sodium hydroxide of 2.38 %, upon which the defined quality of steel solidity of 195 by Brinel is achieved. Thus, both the losses in electricity and the consumption of NaOH are calculated on a yearly level, according to the hardening conditions that have been practiced until now with a help of the projected standard operative procedures in the factory.
According to this basis the total saving amount per year for steel hardening of 100 000 pieces is 18 033 euros. By the application of this methodology the defined quality can be achieved by the lowest possible costs during the process of work.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Social Sciences > Economics and business Natural sciences > Other natural sciences |
| Divisions: | Faculty of Tourism and Business Logistics |
| Depositing User: | Elizabeta Mitreva |
| Date Deposited: | 23 Jan 2013 13:29 |
| Last Modified: | 23 Jan 2013 13:29 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/4961 |
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