Electrode ịgbado ọkụ asambodo E2594 na-enye arụmọrụ duplex dị elu

Dịka onye na-eweta ngwaahịa ụlọ ọrụ kachasị elu, anyị na-enye asambodo asambodo ahụElectrọde ịgbado ọkụ E2594(AWS A5.4 E2594-16), nke akpọrọ AF2594-16 n'ahịa. Elektrọd ígwè a nke nwere calcium nke a kpuchiri titanium, nke nwere obere carbon duplex, nwere ọdịnaya nitrogen dị mkpa iji nye ezigbo iguzogide nchara. Kemistri pụrụ iche ya na-emepụta ígwè weld nke nwere ike iguzogide olulu mmiri, mgbawa corrosion (SCC), na mgbawa okpomọkụ.–dị oke mkpa maka gburugburu ebe jupụtara na chloride dịka ụlọ ọrụ nhazi kemịkalụ na akụrụngwa mmiri ebe ígwè anaghị agba nchara anaghị arụ ọrụ nke ọma.

Elektrọd ahụ'Mmetụta ya sitere na ihe mejupụtara obere carbon ya a na-achịkwa (nke na-abụkarị <0.03% C) yana mmụba nitrogen na molybdenum. Nke a na-enweta oke Pitting Resistance Equivalent (PRE) nke 2-40 ebe ọ na-ejigide obere nhazi austenite-ferrite kwesịrị ekwesị. Nhazi metallurgical na-egbochi nchara dị n'etiti granular ma na-echekwa ike mmetụta n'ofe okpomọkụ ọrụ site na ọnọdụ cryogenic ruo 300°C (572)°F), na-agafe ihe achọrọ maka igwe AWS A5.4 mgbe niile.

N'ọrụ, nke aElectrọde ịgbado ọkụ E2594Nwere mkpuchi titanium-calcium kachasị mma nke na-eme ka DC+ arc kwụsie ike na iwepụ slag n'ọnọdụ niile, gụnyere ngwa kwụ ọtọ-ala. Mkpuchi ahụ na-ebelata nnabata hydrogen (<5ml/100g), na-ewepụ ihe egwu oyi na-agbawa na nkwonkwo ndị nwere oke mgbochi. Ndị na-agbado ọkụ na-akọ na mbufe ígwè dị nro na obere splatter na ngwa ngwa restriction dị mfe, na-eme ka mmepụta dịkwuo mma na ngwa dị mkpa dịka imepụta arịa nrụgide na njikọta pipeline.

Nnwale arụmọrụ na-egosi na kemịkalụ ígwè e ji weld mee bụ nkezi 25.5% Cr, 9.5% Ni, 3.8% Mo, na 0.22% N. Usoro ASTM G48 nọọrọ onwe ya Nnwale a na-egosi iguzogide nchara karịa ọkwa duplex nkịtị site na 40°C (104)°F). Nhazi usoro ferrite-austenite 45/55 a na-achịkwa na-enye ike mmepụta nke 650-750 MPa (94-109 ksi) yana ogologo 25% +–izute nkọwapụta ASME, EN, na NORSOK maka akụrụngwa dị mkpa.

Maka ngwa corrosion siri ike,Electrọde ịgbado ọkụ E2594Ọ ka bụ ihe atụ nke ụlọ ọrụ ahụ. Arụmọrụ ya a na-egosi na ọ dị na sistemụ nhicha mmiri, ikpo okwu ndị dị n'ụsọ oké osimiri, na ihe ndị na-emepụta kemịkalụ na-eme ka a pụrụ ịtụkwasị obi. E nyere ya na ngwugwu 4kg nke e ji vacuum mechie ma nwee ndụ nchekwa ọnwa 36, ​​ihe niile gụnyere asambodo nke otu. Kpọtụrụ ndị otu teknụzụ anyị maka nkọwapụta usoro ịgbado ọkụ kpọmkwem maka ngwa.