316L Vs . 304 hauv AVF Cov Ntsiab Lus - Tiag -Tus nqi Ntiaj Teb Ntawm Tus Hwm

Dab tsi yog 8-12% 316L Hwm Yuav hauv Chav Dialysis? - "316L Zoo dua" Tsis Yog Ib txwm muaj tseeb ntawm no

Cov kab lus hypodermic koob (Round 1, Tshooj 1) npog dav dav 304 vs. 316L: 316L's ntxiv molybdenum txhim kho pitting tsis kam nyob rau hauv ib puag ncig chloride. Tab sis AVF koob tsim nyog tau txais kev suav rov qab - vim AVF koob "tsis txhob hu rau dialysate sab hauv, tsis rov siv dua, tsis rov ua kom tsis muaj menyuam nyob rau ntawm -}site, thiab yog ib zaug - siv," yog li 316L tus nqi siab tshaj ntawm no?

Qhov tseebAVF koobExposure Environment

Txheej txheej: hla ntawm daim tawv nqaij + subcutis + fistula phab ntsa; kev sib cuag cov ntshav thiab cov ntshav heparinized (systemic heparinization thaum lim ntshav, ACT 180–220s)

Pem hauv ntej: 200-400 mL / min ntshav ntws, 4-teev kev sib kho

Tsis muaj kev sib cuag nrog dialysate (dialysate nyob rau ntawm daim nyias nyias sab nrauv; cov ntshav nyob twj ywm intraluminal; AVF koob tsuas yog kov cov neeg mob ntshav)

Tib -siv, EO lossis gamma sterilized, tsis rov siv dua

Los ntawm kev sib piv, 304 tus corrosion kuj nyob rau hauv "serum + heparinized ntshav" yog txaus - ntshav [Cl⁻] ~ 100 mmol / L (~ 3.5 g / L), deb hauv qab dej hiav txwv (~ 19 g / L) . 304 ua haujlwm zoo. Yog li 316L yog "kev txawj ntse se" hauv AVF?

Peb Scenario Qhov twg 316LUa liNtxiv tus nqi tiag

• Ntshav qab zib Cl/Ca (CKD-MBD):​ Cov kab mob raum tsis zoo- cov neeg mob pob txha pob txha tuaj yeem muaj cov tshuaj chloride siab + ntev - cov tshuaj calcium ntxiv; cov ntshav corrosivity me ntsis dhau li qub . 316L超低 (ultra- qis) micro- xeb tus nqi ntawm lub ntsis tom qab 2-xyoo warehouse cia + sterilization cycles yog ib qho kev txiav txim ntawm qhov loj me qis dua 304.
• Seaborne xa tawm mus rau siab- av noo, siab- kev lag luam ntsev (SE Asia, Middle East ntug dej hiav txwv):​ Yog tias ntim micro- leaks, 304 AVF koob yuav pom "daj me ntsis" (micro- xeb) ntawm bevel tom qab 2-3 lub hlis hauv lub thawv tuav; 316L tseem ceeb tshem tawm qhov no. Middle East / SE Esxias xaj los ntawm Cwj Pwm feem ntauqhia316L - tsis yog vim nyob rau hauv - siv xeb, tab sis shipping / cia xeb.
• Ua ntej-electropolish pickling kauj ruam:316L's ntxiv- carbon qis (<0.03%) resists intergranular corrosion; the nitric+hydrofluoric acid pickling before electropolishing won't cause chromium carbide precipitation at grain boundaries - if 304 tsis yog- ntxiv- qis- carbonqib (C Tsawg dua lossis sib npaug li 0.08%) yog siv thiab pickling yog ua tiav, micro- tus nqi tawg ntawm qhov kawg yog 0.3–0.5% siab dua 316L. Qee qhov qis-kawg AVF koob hauv tsev siv 304 tus qauv qib + hla kev xaiv; CFD cov lus ceeb toom ntawm cov koob zoo li no tsis txaus ntseeg.

Tus nqi -Cov txiaj ntsig xaus

Kev muag khoom hauv tsev / khoom hauv av / 304L (ntxiv -cov pa roj carbon tsawg) → txaus; 316L tsis tsim nyog

Export SE Asia / Middle East / ntug hiav txwv warehousing / hom tswv xav "tag nrho kab 316L" hwm dab neeg → mus nrog 316L, +8-12% nqi tsev

Nroj tsuag nrog ua tiav electropolish + pickling: 304L vs . 316L tiav- khoom tawm los sib txawv<1%; plants skipping pickling see 316L yield 2–3 pts higher than 304 (saved rework offsets some premium)

Rau Manufacturing:Tsis txhob pitch 316L's AVF premium li "zoo dua cov tshuaj tiv thaiv corrosion" (304 twb txaus lawm). Pitch nws li "kev xa khoom / kev ruaj ntseg + khaws cov kauj ruam robustness + ntug-case CKD-MBD scenarios" - nws yog qhov ncaj ncees dua, thiab cov tswv lag luam paub txog nws.