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Доклад на д-р инж. Богомил Великов Колев публикуван в Украйна
Автор: bogomil
Категория: Технологии
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Последна промяна: 09.03.2013 16:33
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Последна промяна: 09.03.2013 16:33
ДОНЕЦКИЙ
ГОСУДАРСТВЕИНЫЙ ТЕХНИЧЕСКИЙ
УНИВЕРСИТЕТ
ПРОГРЕССИВНЫЕ ТЕХНОЛОГИИ И СИСТЕМЫ МАШИНОСТРОЕНИЯ Международный сборник научных трудов ВЫПУСК 8
ДОНЕЦК-1999
EC0L0GICAL PRODUCTION OF NEW CAST ALLOYS USING WASTE VOLATILE ELEMENTS(NITROGЕN ETC.) UNDER PRESSURE Kolev Bogomil Velikov (Institute of Metal Science, BAS, Sofia, Bulgaria), E-mail:b.v.kolev@abv.bg It is been the custom In think that stable nitrogen concentrations can be ob- tained only in steels of the stainless type. Due to this, there is no informationthe influence of the main components in the system Fe-Cr-Mn-C on the cristization and maintaining of hyper-equilibnum nitrogen quantities in relation atmospheric conditions in castings of alloys with under 12-14% Cr The work introduces some technological results from the investigations o influence of C, C.r, Mn, etc. on the absorption and maintaing of hyper equilibrium nitrogen concentrations in relation to the atmospheric conditions in casting allays of the system Fe-Cr-Mn-C containing under 12-14% Cr and (ru.il$M under pressure. 1. Introduction The Fe-Cr-Mn-C-N system represents a particular interest for productionof founded and plastic deformation treated products that have to mach requirements of high mechanic indicators-wear resistance, corrosion resistence, non magnetivity, etc. The expensive and scarce Ni may be siuK-wdM substituted for N and Mn coating in the classical austenite alloys on Fe-C sistem. The research in C[l-5], Mn[3-4,6,12] and Cr[12,14-15] influence on solubility in alloys of Fe-C basis are usually relegated to rather concentrations, to pure alloys or to bi-component systems. As far as N soludifi in Cr alloyed steels is concerned, the usually published data iclci *« I concentrations above 15-18% under standard conditions-temperatuu- I"1"*! and N pressure l.lO"^Pa. In [7] has been indicated that N solubiliu m i 4 steels under the above mentioned conditions is approximately 1/1 CM > p.m «fl Cr content in Cr-Mn steels-1/75 part and in Cr-Ni-Mn steels amoiuil". i "• •»■ 1/58 part of the content of Cr and from 1/72 to 1/92 part of the whole ■■".•••nf Cr+Mn. Another essentional problem in the process of N-coating of ihc minM the preservation of N in the process of crystalization and the prevention
ПРОГРЕССИВНЫЕ ТЕХНОЛОГИИ И СИСТЕМЫ МАШИНОСТРОЕНИЯ Международный сборник научных трудов ВЫПУСК 8
ДОНЕЦК-1999
EC0L0GICAL PRODUCTION OF NEW CAST ALLOYS USING WASTE VOLATILE ELEMENTS(NITROGЕN ETC.) UNDER PRESSURE Kolev Bogomil Velikov (Institute of Metal Science, BAS, Sofia, Bulgaria), E-mail:b.v.kolev@abv.bg It is been the custom In think that stable nitrogen concentrations can be ob- tained only in steels of the stainless type. Due to this, there is no informationthe influence of the main components in the system Fe-Cr-Mn-C on the cristization and maintaining of hyper-equilibnum nitrogen quantities in relation atmospheric conditions in castings of alloys with under 12-14% Cr The work introduces some technological results from the investigations o influence of C, C.r, Mn, etc. on the absorption and maintaing of hyper equilibrium nitrogen concentrations in relation to the atmospheric conditions in casting allays of the system Fe-Cr-Mn-C containing under 12-14% Cr and (ru.il$M under pressure. 1. Introduction The Fe-Cr-Mn-C-N system represents a particular interest for productionof founded and plastic deformation treated products that have to mach requirements of high mechanic indicators-wear resistance, corrosion resistence, non magnetivity, etc. The expensive and scarce Ni may be siuK-wdM substituted for N and Mn coating in the classical austenite alloys on Fe-C sistem. The research in C[l-5], Mn[3-4,6,12] and Cr[12,14-15] influence on solubility in alloys of Fe-C basis are usually relegated to rather concentrations, to pure alloys or to bi-component systems. As far as N soludifi in Cr alloyed steels is concerned, the usually published data iclci *« I concentrations above 15-18% under standard conditions-temperatuu- I"1"*! and N pressure l.lO"^Pa. In [7] has been indicated that N solubiliu m i 4 steels under the above mentioned conditions is approximately 1/1 CM > p.m «fl Cr content in Cr-Mn steels-1/75 part and in Cr-Ni-Mn steels amoiuil". i "• •»■ 1/58 part of the content of Cr and from 1/72 to 1/92 part of the whole ■■".•••nf Cr+Mn. Another essentional problem in the process of N-coating of ihc minM the preservation of N in the process of crystalization and the prevention
Доклад на д-р инж. Богомил Великов Колев...
Доклад на д-р инж. Богомил Великов Колев...
Доклад на д-р инж. Богомил Великов Колев...
Доклад на д-р инж. Богомил Великов Колев...
Доклад на д-р инж. Богомил Великов Колев...
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