ALOY 625, UNSN06625
Alloy 625 (UNS N06625) | |||||||||
Nchịkọta | Nickel-chromium-molybdenum alloy nwere mgbakwunye niobium nke na-arụ ọrụ na molybdenum na-eme ka matrix alloy sie ike ma si otú a na-enye ike dị elu na-enweghị ọgwụgwọ okpomọkụ na-ewusi ike. Alloy ahụ na-eguzogide ọtụtụ gburugburu ebe ndị na-emebi emebi ma na-eguzogide ọgwụ maka pitting na crevice corrosion. Ejiri ya na nhazi kemịkalụ, ikuku ikuku na injinia mmiri, akụrụngwa na-achịkwa mmetọ, na ihe nrụpụta nuklia. | ||||||||
Ụdị ngwaahịa ọkọlọtọ | Pipe, tube, mpempe akwụkwọ, warara, efere, gburugburu mmanya, flat bar, forging stock, hexagon na waya. | ||||||||
Ihe mejupụtara kemịkalụ Wt,% | Min | Oke. | Min. | Oke. | Min. | Oke. | |||
Ni | 58.0 | Cu | C | 0.1 | |||||
Cr | 20.0 | 23.0 | Co | 1.0 | Si | 0.5 | |||
Fe | 5.0 | Al | 0.4 | P | 0.015 | ||||
Mo | 8.0 | 10 | Ti | 0.4 | S | 0.015 | |||
Nb | 3.15 | 4.15 | Mn | 0.5 | N | ||||
Constant nke anụ ahụ | Njupụta,g/8.44 | ||||||||
Oke agbaze,℃ 1290-1350 | |||||||||
Njirimara arụrụ arụ | (Ngwọta Annealed)(1000h) Ike mgbawa (1000h) ksi Mpa 1200℉/650℃ 52 360 1400℉/760℃ 23 160 1600℉/870℃ 72 50 1800℉/980℃ 26 18 | ||||||||
Microstructure
Alloy 625 bụ ihe ngwọta siri ike matriks-kpagidere ihu gbadoro ụkwụ na cubic alloy.
Ndị agwa
N'ihi ọdịnaya katọn ya dị ala na ọgwụgwọ okpomọkụ na-eme ka ọ kwụsie ike, Inconel 625 na-egosi ntakịrị mmasị na mmetụta ọbụna mgbe awa 50 gachara na okpomọkụ na nso 650 ~ 450 ℃.
A na-enye alloy ahụ na ọnọdụ nro dị nro maka ngwa ndị metụtara mmiri corrosion (Alloy 625, ọkwa 1), ma TUV kwadoro maka ụgbọ mmiri nrụgide na okpomọkụ -196 ruo 450 ℃.
Maka ngwa okpomọkụ dị elu, n'elu ihe ruru. 600℃, ebe elu ike na iguzogide creep na mgbawa na-chọrọ, a ngwọta-annealed version (Alloy 625, ọkwa 2) na a elu carbon ọdịnaya na-ejikari n'ọrụ na dị na arịrịọ na ụfọdụ ngwaahịa ụdị.
Nguzogide pụtara ìhè na olulu, nrụrụ corrosion, na ọgụ intergranular;
Ihe fọrọ nke nta ka ọ bụrụ nnwere onwe zuru oke site na mgbawa nrụgide-corrosion nke chloride;
Ezigbo iguzogide acid ịnweta, dị ka nitric, phosphoric, sulfuric na hydrochloric acid;
ezigbo iguzogide alkalis na organic acid;
Ezigbo ihe eji arụ ọrụ.
Nguzogide corrosion
Ọdịnaya dị elu nke alloy 625 na-enyere ya aka iguzogide gburugburu ebe obibi corrosion dị iche iche. N'ebe dị nro dị ka ikuku, mmiri ọhụrụ na nke oké osimiri, nnu na-anọpụ iche, na mgbasa ozi alkaline ọ fọrọ nke nta ka ọ bụrụ ọgụ. Na gburugburu corrosion ka njọ, nchikota nickel na chromium na-enye iguzogide kemịkalụ oxidizing, ebe nnukwu nickel na molybdenum na-enye iguzogide enweghị ike imegide mmetụta n'oge ịgbado ọkụ, si otú a na-egbochi mgbawa intergranular na-esote. Ọzọkwa, nnukwu ọdịnaya nickel na-enye site na chloride ion-stress-corrosion cracking.
Ngwa
Ụdị dị nro nke Alloy 625 (ọkwa 1) ka a na-ahọrọ maka ngwa na ụlọ ọrụ usoro kemịkalụ, na injinia mmiri na n'ime ihe nchịkwa mmetọ maka nchebe gburugburu ebe obibi. Ngwa a na-ahụkarị bụ:
1. Superphosphoric acid mmepụta akụrụngwa;
2. Ngwongwo na-emezigharị ihe mkpofu nuklia;
3. Utoojoo gas mmepụta tubes;
4. Usoro ọkpọkọ na sheathing nke risers na nchọpụta mmanụ;
5. Offshore ụlọ ọrụ na mmiri akụrụngwa;
6. Flue gas scrubber na damper components;
7. Chimney lining.
N'ihi na elu okpomọkụ ngwa, ruo ihe dị ka 1000 ℃, ihe ngwọta-annealed ụdị Alloy 625 (ọkwa 2) nwere ike ji mee ihe dị ka ASME koodu maka nrụgide arịa. Ngwa a na-ahụkarị bụ:
1. Ihe ndị dị na sistemu gas na-ekpofu ihe na ihe ọkụkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpochapụ okpomọkụ;
2. Mkpokọta ọkụ na ụlọ ọrụ refineries na ọdụ ụgbọ mmiri;
3. Recuperator na ndị na-akwụ ụgwọ;
4. Usoro ikpochapu mmanụ dizel okpuru mmiri;
5. Superheater tubes na mkpofu ọkụ osisi.
Oge nzipu: Nov-11-2022