I-Duplex Stainless Steel Castings

I-Duplex Stainless Steel(DSS) ibhekisela eqenjini lensimbi engagqwali ene-metallographic microstructure yakho kokubili i-ferrite ne-austenite accounting ngayinye cishe ngama-50%. Ngokuvamile, okuqukethwe kwezigaba ezincane kudinga okungenani kube ngu-30%. Endabeni yokuqukethwe kwekhabhoni ephansi, okuqukethwe kwe-Cr kungu-18% kuya ku-28%, futhi okuqukethwe kwe-Ni kungu-3% kuya ku-10%. Ezinye izinsimbi ezingenasici eziyi-duplex nazo ziqukethe izakhi ze-alloying ezifana ne-Mo, Cu, Nb, Ti, kanye no-N. I-DSS inezici ze-austenitic ne-ferritic stainless steel. Uma iqhathaniswa ne-ferrite, ine-plasticity ephakeme kanye ne-ductility, ayinakho ukushisa kwegumbi, futhi ithuthukise kakhulu ukumelana nokugqwala kwe-intergranular nokusebenza kokushisela, kuyilapho igcina i-brittleness, i-thermal conductivity ephezulu, kanye ne-superplasticity njenge-ferrite stainless steel. Uma kuqhathaniswa neinsimbi engagqwali ye-austenitic, i-DSS inamandla aphezulu futhi ithuthukise kakhulu ukumelana nokugqwala kwe-intergranular kanye nokugqwala kokucindezeleka kwe-chloride. Insimbi engagqwali e-Duplex inokumelana nokugqwala okuhle kakhulu kwe-pitting futhi iyinsimbi engagqwali eyonga i-nickel. Amamaki atholakalayo ensimbi engagqwali ye-duplex ephonswe ukulahlwa kwe-investment wax elahlekile : 1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770, A 890 1C, A 890 1A, A 890, A 8 A 8 A 8, A 8 A 8, A 8 A 9, A 9 A 9, 8 A 9, 8 A 9, 8 A 9, 8 A 9, 8 A 9, 8 A 9. 995 1B, A 995 4A, A 995 5A, 2205, 2507, 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N