347/347H Insimbi Engagqwali

I-alloy 347 iyinsimbi elinganiselwe, i-austenitic, i-chromium equkethe i-columbium ecabangela ukuphela kwemvula ye-carbide, kanjalo nokugqwala kwe-intergranular. I-alloy 347 ilinganiswa ngokwanda kwe-chromium ne-tantalum futhi inikeza izakhiwo ezikhuphukayo nezikhuphuka ingcindezi kune-alloy 304 kanye ne-304L, engase isetshenziselwe ukuchayeka lapho ukuzwela nokugqwala kwe-intergranular kukhathaza. ukuba nokumelana nokugqwala okuvelele, okungcono kune-alloy 321. Ingxubevange engu-347H iwuhlobo oluphezulu lwekhabhoni lokwakheka kwe-Alloy 347futhi ibonisa izinga lokushisa eliphezulu elithuthukisiwe kanye nezakhiwo ezinwabuzelayo.
Izici

• Ukucindezeleka okuphezulu kwe-creep kanye nezakhiwo zokuphuka uma kuqhathaniswa ne-304
• Ilungele isevisi yezinga lokushisa eliphezulu
• Inqoba ukuzwela kanye nokukhathazeka kokugqwala kwe-intergranular
• Ingasetshenziswa ezinhlelweni zokushisa eziphakeme
• Ngenxa yokuzinza izinto zinikeza ukumelana nokugqwala okungcono kakhulu uma kuqhathaniswa no-304/304L

• Ukucubungula Amakhemikhali
• Imishini yokucubungula ukudla kanye nokugcina
• I-Petroleum Refining fluid catalytic cracking units, isevisi ye-polythionic acid
• Ukukhiqizwa Kwemithi
• I-Waste Heat Recovery recuperators

Ipuleti lensimbi engagqwali elingu-alloy 347 libonisa ukumelana nokugqwala okuhle okuvamile okufana nokungu-304. Lakhiqizwa ukuze lisetshenziswe kububanzi bemvula ye-chromium carbide ngo-800 – 1500°F (427 – 816°C) lapho ama-alloys angalingani njengama-304 angaphansi kwe-intergranular. ukuhlasela. Kulo bubanzi bezinga lokushisa, ukumelana nokugqwala okuphelele kwe-Alloy 347 ipuleti lensimbi engenasici kungcono kune-Alloy 321 ipuleti lensimbi engagqwali. I-alloy 347 ngaphezu kwalokho yenza ngcono ngandlela thize kune-Alloy 321 ezimweni ezine-oxidizing kakhulu ifike ku-1500°F (816°C). Ingxubevange ingasetshenziswa njengengxenye yezixazululo ze-nitric; ama-asidi e-organic ahlanjululwe kakhulu emazingeni okushisa aphakathi nendawo naku-phosphoric acid ehlanzekile emazingeni okushisa aphansi kanye nezixazululo ezihlanjululwe ezifika ku-10% emazingeni okushisa aphezulu. I-alloy 347 ipuleti lensimbi engagqwali imelana ne-polythionic acid yokucindezeleka kokugqwala kokuqhekeka kusevisi ye-hydrocarbon. Ingasetshenziswa futhi kuzixazululo ze-chloride noma i-fluoride yamahhala e-caustic emazingeni okushisa aphakathi. I-alloy 347 insimbi engagqwali plate ayisebenzi kahle ezixazululweni ze-chloride, ngisho nasezintweni ezincane, noma ku-sulfuric acid.