Duplex steel na-ezo aka na ezinụlọ nke igwe anaghị agba nchara nke nwere microstructure abụọ nke nwere ma austenitic (usoro cubic kristal na-adabere na ihu) na ferritic (usoro cubic crystal na-adabere na ahụ). A na-enweta ihe owuwu nke abụọ a site na ngwakọta alloy akọwapụtara nke gụnyere ihe ndị dị ka chromium, nickel, molybdenum, na nitrogen.
Igwe anaghị agba nchara duplex bụ nke usoro UNS S3XXX, ebe “S” na-anọchi anya igwe anaghị agba nchara, ọnụọgụ ahụ na-egosikwa ihe mejupụtara alloy. Igwe microstructure nke abụọ na-enye ngwakọta nke ihe ndị a na-achọsi ike, na-eme ka ígwè duplex dị mma maka ngwa dị iche iche. Ụfọdụ isi atụmatụ nke igwe duplex gụnyere:
1.Corrosion Resistance: Duplex steel na-enye ezigbo nguzogide corrosion, karịsịa na gburugburu ebe siri ike nwere chlorides. Nke a na-eme ka ọ dabara adaba maka nhazi kemịkalụ, mmanụ na gas, na ngwa mmiri.
2.High Strength: N'iji ya tụnyere austenitic igwe anaghị agba nchara, duplex ígwè nwere ike dị elu, na-eme ka ọ dị mma maka ngwa ebe a na-achọwanye ike ígwè ọrụ.
3.Good Toughness na Ductility: Ngwongwo Duplex na-emesi ike ike na ductility dị mma, ọbụna na obere okpomọkụ. Ngwakọta akụrụngwa a bara uru na ngwa ebe enwere ike idobe ihe dị iche iche na ibu dị iche iche na okpomọkụ.
4.Stress Corrosion Cracking Resistance: Ngwongwo Duplex na-egosipụta ezigbo nguzogide nrụgide corrosion cracking, ụdị corrosion nke nwere ike ime n'okpuru mmetụta jikọtara nke nrụgide nrụgide na gburugburu ebe obibi.
5.Cost-Effective: Ọ bụ ezie na nchara duplex nwere ike ịdị oke ọnụ karịa igwe anaghị agba nchara austenitic, njirimara arụmọrụ ya na-akwadokarị ọnụ ahịa ya, karịsịa na ngwa ebe nguzogide corrosion na ike dị oke egwu.
Akara ule igwe anaghị agba nchara duplex gụnyereduplex 2205 (UNS S32205)na duplex 2507 (UNS S32750). A na-eji akara ule ndị a n'ọtụtụ ebe na ụlọ ọrụ dịka nhazi kemịkalụ, nchọpụta mmanụ na gas, n'ụsọ osimiri na injinia mmiri, na pulp na imepụta akwụkwọ.
Oge nzipu: Nov-27-2023