Working area protection in foundry shops of machinery production

Introduction. The work objection is the investigation of the industrial safety of the foundry. The task to estimate a disperse composition of dust which determines the microclimate of the foundry working area is being solved. The dependence between the particle size and their motion speed under the gravitational or centrifugal forces is revealed. Materials and Methods. The granulometric composition analysis of a powder dust sample is carried out by the laser diffraction method implemented on the laser particle analyzer Fritsch NanoTec “ANALISETTE 22”. Research Results . The data analysis shows that all phases of the process determine the microclimate of the internal environment and, under the emission dispersion, the medium in the intercase zone. The impact degree depends on the dispersion and chemical composition of dust particles. The other harmful airborne substances deposited on dust particles make it more dangerous. For example, an increase in SiO2 content toughens the requirements for clean air in the working area. Therefore, it is necessary to take into account more rigorous values of maximum permissible concentrations (MPC). Discussion and Conclusions. The most dangerous areas of the foundry production in the eco-risk terms are identified; and proposals on the development of the dust-collecting system with water wash are made. The research results can be used in foundries of the machinery production.

рабочая зона, литейное производство, дисперсность, пыль, концентрация, гранулометрический анализ, working area, foundry, dispersability, dust, concentrations, granulometric composition analysis

1. Azarov, V.N. Kompleksnaya otsenka pylevoy obstanovki i razrabotka mer po snizheniyu zapylennosti vozdushnoy sredy promyshlennykh predpriyatiy : avtoref. dis. d-ra tekhn. nauk. [Comprehensive assessment of the dust conditions and development of measures on reduction of dustiness of the air environment of industrial enterprises: Dr.Sci. (Eng.) diss., author’s abstract.] Rostov-on-Don, 2004, 47 p. (in Russian).

2. Semkin, V.I., Dumnov, A.V., Adzhiev, N.I. Avtorskoe svidetel'stvo 556825. Mokryy pyleulovitel'. [Authorship certificate 556825. Wet-dust collector.] Research and Design Institute for Gas Treatment Facilities, Safety and Health Regulations in Construction Materials Industry, 1977 (in Russian).

3. Belov, S.V. Okhrana okruzhayushchey sredy. [Environment protection.] 2nd ed. Moscow: Vysshaya shkola, 1991, 319 p. (in Russian).

4. Boldin, A.N. Liteynoe proizvodstvo s tochki zreniya ekologii. [The Foundry Industry from the Point of View of Unified Assessment of Ecological Compatibility.] Foundry. Technologies and Equipment. 2005, no. 3, pp. 33–34 (in Russian).

5. Boldin, A.N., Davydov, S.S., Zhukovskiy, N.I. Liteynye formovochnye materialy. Formovochnye, sterzhnevye smesi i pokrytiya: spravochnik. [Foundry molding materials. Molding, core mixtures and coatings: Reference book.] Moscow: Mashinostroenie, 2006, 507 p. (in Russian).

6. Golovina, Е.I. Opasnye i vrednye faktory liteynogo proizvodstva i ikh vliyanie na sostoyanie atmosfery v rabochey zone. [Dangerous and harmful factors of foundry production and their effect on air condition in the working area.] Herald of Kazan Technological University, 2016, vol.19, no. 23, pp. 126–131 (in Russian).

7. Golovina, Е.I., Manokhin, V.Y., Ivanova, I.A. Otsenka opasnykh faktorov liteynogo proizvodstva. [Assessment of hazardous factors in foundry.] Kompleksnye problemy tekhnosfernoy bezopasnosti: sb. trudov mezhdunar. nauch.-prakt. konf. [Systemic problems of technosphere safety: Proc. Int. Sci.-Pract. Conf.] Voronezh, 2016, pp. 170–173 (in Russian).

8. Ivanova, I.A. Opredelenie koeffitsienta ekologicheskoy opasnosti liteynogo proizvodstva. [Determination of the ecological hazard factor of the foundry.] Vestnik of DSTU, 2010, vol. 10, no. 3 (46), pp. 406–409 (in Russian).

9. Ivanova, I.A, Manokhin, V.Y. Otsenka dispersnogo sostava pyli uchastka chernogo lit'ya. [Evaluation of dispersed dust composition of the ferrous foundry area.] Vestnik of DSTU, 2010, vol. 10, no. 2 (45), pp. 200–204 (in Russian).a 10. Ivanova, I.A., Manokhin, V.Y., Golovina, Е.I. Otsenka zapylennosti rabochey zony drobestruynogo uchastka i vybivnykh reshetok liteynogo proizvodstva. [Assessment of dustiness of the working area of bead-blasting area and shake-out tables of foundry production.] Kompleksnye problemy tekhnosfernoy bezopasnosti: sb. trudov XI mezhdunar. nauch.-prakt. konf. [Systemic problems of technosphere safety: Proc. XI Int. Sci.-Pract. Conf.] Voronezh, 2015, pp. 129–136 (in Russian).

10. Kozlov, L.Y., Kolokoltsev, V.M., Vdovin, K.N. Proizvodstvo stal'nykh otlivok. [Steel founding production.] Kozlov, L.Y., ed. Moscow: MISIS, 2003, 352 p. (in Russian).

11. Matyukhov, V.G. Proizvodstvo stal'nykh otlivok. [Safety engineering in foundry.] Moscow: Vysshaya shkola, 1980, 94 p. (in Russian).

12. Trukhov, Y.A., Sorokin, Y.A., Yershov, M.Y. Tekhnologiya liteynogo proizvodstva: lit'ye v peschanye formy. [Foundry technology: sand mold casting.] Trukhov, Y.A., ed. Moscow: Akademiya, 2005, 524 p. (in Russian).