I-Duplex Steel Castings

Duplex Steel engatyiwa(DSS) ibhekisela kwiqela lensimbi engenasici kunye ne-metallographic microstructure yazo zombini i-ferrite kunye ne-austenite nganye ye-accounting malunga ne-50%. Ngokuqhelekileyo, umxholo wezigaba ezingaphantsi kufuneka ubuncinane ube ngama-30%. Kwimeko yomxholo wekhabhoni ephantsi, umxholo we-Cr ngu-18% ukuya kwi-28%, kwaye umxholo we-Ni ngu-3% ukuya kwi-10%. Ezinye i-duplex stainless steels nazo ziqulethe izinto ezixutywayo ezifana ne-Mo, Cu, Nb, Ti, kunye ne-N. I-DSS ineempawu ze-austenitic kunye ne-ferritic stainless steel. Xa kuthelekiswa ne-ferrite, ineplastiki ephezulu kunye ne-ductility, akukho brittleness yegumbi, kwaye iphucule kakhulu ukuxhathisa kwe-intergranular corrosion kunye nokusebenza kwe-welding, ngelixa igcina i-brittleness, i-thermal conductivity ephezulu, kunye ne-superplasticity njenge-ferrite stainless steel. Xa kuthelekiswa neintsimbi ye-austenitic, i-DSS inamandla amakhulu kwaye iphucule kakhulu ukuchasana ne-intergranular corrosion kunye ne-chloride stress corrosion. I-Duplex steel stainless steel ine-pitting corrosion resistance encomekayo kwaye ikwayintsimbi egcina i-nickel. Amanqaku afumanekayo duplex steel stainless ephoswe yi wax elahlekileyo utyalo mali : 1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770, A 890 1C, A 890 1A, A 890, 8 A 8 A 8 A 8 A 8 A 8 A9 A9 995 1B, A 995 4A, A 995 5A, 2205, 2507, 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N