Tus saib xyuas kev saib xyuas tau rub lub 4 kW PTFE immersion rhaub los ntawm nickel plating tank tom qab qhov kev ua txhaum hauv av. Lub PTFE sheath tau delaminated-ib ntu 50 mm × 30 mm ntawm polymer tau tshem tawm ntawm cov hlau sheath ze ntawm flange. Cov hlau raug pom pom lub teeb nto corrosion. Tus thawj saib xyuas tau nug seb lub tshuab cua sov puas tuaj yeem kho los ntawm rov- txheej lossis patching thaj chaw delaminated. Lo lus teb tsis yog. Lub PTFE immersion rhaub nrog sheath delamination tsis tuaj yeem rov qab los rau kev pabcuam nyab xeeb.
Delamination yog kev sib cais ntawm PTFE sheath los ntawm cov hlau substrate. Nws yog qhov tsis ua haujlwm ntawm kev sib txuas ntawm cov polymer thiab cov hlau. Thaum daim ntawv cog lus tawg lawm, nws tsis tuaj yeem rov qab los hauv thaj teb.
Vim li cas Delamination tshwm sim
Delamination yog tshwm sim los ntawm qhov poob ntawm adhesion ntawm PTFE thiab cov hlau sheath. Lub adhesion tuaj yeem poob los ntawm ntau lub tshuab.
Tshuaj tua kab mob ntawm cov kab mob yog feem ntau ua rau. Cov txheej txheem dej permeates PTFE thiab ncav cuag qhov sib cuam tshuam ntawm polymer thiab hlau. Cov kua reacts nrog cov hlau los yog nrog tus neeg sawv cev sib txuas, ua kom tsis muaj zog ntawm daim ntawv cog lus. Corrosion khoom tsim nyob rau hauv lub interface thiab nyob ntim ntau tshaj li cov thawj hlau, thawb lub PTFE deb ntawm lub substrate.
Thermal stress yog lwm qhov ua rau. Cov PTFE thiab cov hlau muaj qhov sib txawv ntawm thermal expansion. Thaum lub tshuab cua sov hloov thermally, PTFE thiab hlau nthuav dav thiab cog lus ntawm tus nqi sib txawv. Qhov sib txawv txav imposes shear stress ntawm daim ntawv cog lus. Tshaj ntau txhiab lub voj voog, daim ntawv cog lus qaug zog thiab ua tsis tiav.
Mechanical puas kuj tuaj yeem pib delamination. Ib qho gouge lossis qhov cuam tshuam uas nkag mus rau PTFE tsim txoj hauv kev rau cov kua dej mus txog cov kab ntawv cog lus. Cov kua kis tau raws li qhov sib txuas, nqa PTFE.
| Ua rau delamination | Mechanism | Lub Sijhawm Pom Pom Kev Delamination | Cov cheeb tsam cuam tshuam |
|---|---|---|---|
| Tshuaj tua kab mob ntawm daim ntawv cog lus | Permeation thiab tshuaj tiv thaiv | 6–24 lub hlis | Pib ntawm qhov tsis xws luag |
| Thermal stress | Differential expansion | 12–36 lub hlis | Ntug thiab cov ntsiab lus ntxhov siab |
| Kev puas tsuaj | Sheath ua txhaum | Hnub-lub lim tiam | Localized |
| Manufacturing defect | Nyiaj tsis zoo | Lub lis piam-hli | Tej thaj chaw |
Delamination ua rau thiab lawv cov yam ntxwv
Vim li cas Delamination tsis tuaj yeem kho hauv teb
Kev sib raug zoo ntawm PTFE thiab cov hlau yog tsim nyob rau hauv ib puag ncig tswj Hoobkas. Hlau nto yog npaj los ntawm blasting, etching, los yog priming. PTFE yog siv nyob rau hauv tshav kub thiab siab, los yog nws yog chemically bonded nrog ib tug siab -kev ua tau zoo nplaum. Daim ntawv cog lus yog tas mus li thiab uniform.
Kev kho thaj teb tsis tuaj yeem rov ua dua daim ntawv cog lus ntawd. Patching lub delaminated cheeb tsam nrog ib tug polymer compound tsim ib tug thib ob daim ntawv cog lus uas tsis muaj zog tshaj qhov qub. Lub thaj muaj qhov sib txawv thermal expansion zog, tsim kom muaj kev ntxhov siab tshiab. Cov kua dej uas twb tau nkag mus rau hauv thaj chaw delaminated tseem raug kaw, txuas ntxiv mus rau corrode cov hlau hauv qab.
Vim li cas lub tshuab rhaub Delaminated tsis tuaj yeem rov qab mus rau qhov kev pabcuam
Qhov chaw delaminated yog ib txoj hauv kev rau cov txheej txheem ua kua kom ncav cuag cov hlau sheath. Cov kua dej corrodes cov hlau, thiab cov khoom siv corrosion thawb lub PTFE mus deb ntawm lub substrate. Lub delamination kis tau.
Cov hlau raug kuj tsim ib txoj hauv kev rau tam sim no kom xau rau hauv av. Cov rwb thaiv tsev tsis kam poob qis, thiab kev ua txhaum hauv av ua ntau zaus. Thaum kawg, lub rhaub tsis ua haujlwm.
Hauv kev txhoj puab heev chemistry, cov hlau raug corrodes sai heev. Lub rhaub nrog me me delamination tuaj yeem ua tsis tiav hauv lub lis piam yog tias cov tshuaj lom neeg ua phem thiab cov hlau tsis muaj corrosion-resistant.
Ntsuam xyuas seb lub rhaub puas tsim nyog hloov raws li Warranty
Delamination uas tsim nyob rau hauv lub sij hawm lav-feem ntau 12 lub hlis- tej zaum yuav raug them yog tias qhov ua tsis tiav vim yog kev tsim khoom tsis raug. Kev delamination tshwm sim los ntawm kev khiav hauj lwm sab nraum qhov kev txwv tsis pub dhau - kub sheath kub, chemical aggressive, los yog mechanical puas tsuaj- feem ntau tsis them.
Kev ntsuam xyuas yuav tsum muaj cov ntaub ntawv ntawm kev khiav hauj lwm tej yam kev mob: da dej chemistry, kub, immersion qhov tob, ntws tej yam kev mob, thiab lub luag hauj lwm voj voog. Yog tias lub tshuab rhaub tau ua haujlwm nyob rau hauv cov lus qhia tshwj xeeb thiab qhov delamination tsim ntxov ntxov, daim ntawv lees paub yog tsim nyog. Yog hais tias cov kev khiav hauj lwm tej yam kev mob tshaj qhov specification, qhov kev hloov yuav tsum tau teev nrog ntau yam tsis tsim nyog.
Tiv thaiv Delamination nyob rau hauv Hloov
Hloov lub rhaub yuav tsum hais txog lub hauv paus ua rau delamination. Yog hais tias cov tshuaj tua kab mob yog qhov teeb meem, lub thicker sheath los yog ntau chemically resistant polymer txo cov permeation tus nqi. Yog hais tias thermal stress yog qhov teeb meem, qhov qis dua watt ceev yuav txo qhov kub thiab txias ntawm qhov sib txawv. Yog tias qhov teeb meem kev puas tsuaj yog qhov teeb meem, cov ntaub qhwv tuab dua los yog kev tiv thaiv kev tiv thaiv txo qhov kev pheej hmoo.
Ib qho kev cai PTFE immersion rhaub configuration nrog ib tug tuab sheath, ib tug tsawg watt ceev, thiab ib tug rounded ntug nyob rau hauv ntau lub hauv paus ua rau ib txhij. Cov txheej txheem tshwj xeeb yuav tsum muaj cov tshuaj da dej, kev ua haujlwm kub, qhov ntev ntawm lub tank, kev hloov pauv theem, thiab cov keeb kwm tsis ua haujlwm ntawm cov cua sov yav dhau los.
Thaum Reuse Tsis Muaj Kev Xaiv
PTFE immersion rhaub nrog delaminated sheaths tsis rov siv tau. Cov ntawv cog lus tsis tuaj yeem rov qab los, qhov corrosion tsis tuaj yeem thim rov qab, thiab kev nyab xeeb tsis tuaj yeem raug tshem tawm. Lub tshuab cua sov delaminated yuav tsum tau muab tshem tawm ntawm kev pabcuam, tagged li ua tsis tau, thiab hloov nrog ib chav tsev teev tseg rau qhov kev ua haujlwm tiag tiag.
Tus nqi hloov pauv yog me me piv rau tus nqi ntawm qhov txhaum hauv av uas yuav siv cov kab ntau lawm los yog kev nyab xeeb ntawm electrolyte mus txog qhov chaw nres nkoj uas muaj zog. Qhov kev txiav txim siab ncaj nraim: hloov, tsis kho.
