Cartridge heaters muaj nuj nqis rau lawv cov qauv tsim thiab yooj yim ntawm kev teeb tsa hauv cov ntawv thov xws li kua thiab cua sov. Txawm li cas los xij, hauv qhov chaw ntub dej (piv txwv li, chav dej, chav ua noj, cov tso tsheb hlau luam), cov pa ya raws tuaj yeem nkag mus rau sab hauv los ntawm qhov sib txawv ntawm cov hlau lead thiab cov hlau sheath. Qhov no ua rau txo cov rwb thaiv tsev tiv thaiv, hluav taws xob to, luv luv Circuit Court, lossis txawm tias lub tshuab hluav taws xob kub hnyiab, ua rau muaj kev nyab xeeb tseem ceeb thiab ruaj khov. Yog li ntawd, qhov kawg ua tau zoo- sealing rau cov dej tsis kam yog qhov kev tiv thaiv tseem ceeb rau kev ua haujlwm ruaj khov ntawm cov cua sov no hauv cov dej ntub dej. Cov ntaub ntawv no qhia txog cov tswv yim zoo sib khi uas suav nrog ua ntej- kev kho mob, xaiv cov khoom siv, cov txheej txheem txheej txheem, thiab kev tiv thaiv sab nraud.
I. Cov Ntsiab Cai ntawm Cov Dej Hiav Txwv - Pov Thawj Sealing
Kev sib khi rau qhov chaw ntub dej yuav tsum daws peb qhov teeb meem tseem ceeb: thaiv txoj kev ya raws (tshem tawm qhov khoob thiab qhov), ua kom cov khoom sib xws (muaj zog adhesion ntawm lub sealant, hlau sheath, thiab txhuas hlau rwb thaiv tsev), thiab muab ib puag ncig adaptability (tsis kam mus rau kub, corrosion, thiab kev laus). Ib qho kev saib xyuas hauv cov cheeb tsam no tuaj yeem ua rau lub foob tsis ua haujlwm.
II. Cov lus qhia ntxaws txog kev kho mob
1. Xaus Ua Ntej-Kev Kho Mob: Ua kom muaj lub Foob Zoo Zoo
Kev tu kom zoo ua ntej sealing yog qhov tseem ceeb. Cov kab mob xws li roj, oxide txheej, los yog cov khib nyiab ntawm cov hlau sheath yuav ua rau cov sealant adhesion tsis muaj zog, tsim kom muaj cov dej xau.
Degreasing: So cov hlau sheath kawg (xws li, stainless hlau, tooj liab) nrog acetone los yog anhydrous ethanol kom tshem tawm cov roj thiab hmoov av.
Oxide Tshem Tawm: Yog tias muaj xeb lossis oxide, maj mam xuab zeb rau thaj tsam nrog nplua -grit sandpaper kom txog rau thaum cov hlau ci, tom qab ntawd ntxuav nrog cawv thib ob.
Qhuav: Muab lub rhaub kawg tso rau hauv qhov cub ntawm 60℃(140℃F) rau 10-15 feeb kom ntseeg tau tias tag nrho cov dej hauv sab hauv raug tshem tawm.
2. Lead Wire Optimization: Txo cov ntsiab lus nkag ntawm qhov chaw
Cov hlau lead yog cov channel tseem ceeb rau cov dej nkag. Optimization muaj ob qho tib si rwb thaiv tsev xaiv thiab kev sib txuas taw tes sealing.
Lead Wire Xaiv: Tsis txhob txheem PVC-cov xov hlau insulated. Xaiv rau fluoroplastic- cov xov hluav taws xob (piv txwv li, FEP, PTFE) lossis silicone roj hmab- cov xov hlau insulated. Cov ntaub ntawv no muaj kev tiv thaiv zoo rau cov dej noo, qhov kub thiab txias (-60℃txog 200℃+), thiab tsis tshua muaj kev laus thiab tawg.
Internal Connection Point Sealing: Lub solder sib koom ua ke nyob rau hauv lub rhaub uas txuas cov hlau tsis kam mus rau cov hlau lead yuav tsum xub muab ib puag ncig thiab compacted nrog siab - kub insulating hmoov (xws li magnesium oxide). Ib qho me me ntawm epoxy resin tuaj yeem muab tso rau hauv thaj chaw no kom tsis txhob ya raws los ntawm kev sib koom ua ke.
3. Sealant Material Selection thiab Potting txheej txheem
Select the appropriate sealant based on the operating environment (temperature, humidity, exposure to corrosive liquids), and employ a multi-layer potting process for enhanced protection.
(1) Tsawg mus rau Nruab Nrab Kub Nroj Tsuag Ib puag ncig (tsawg dua lossis sib npaug li 120℃/ 248℃F; huab cua ntub lossis dej me me)
Cov Khoom Siv Pom Zoo: Siab-Tsub RTV Silicone Roj Hmab (Shore A hardness 60-70). Muab zoo elasticity, chav tsev kub curing, thiab muaj zog adhesion, haum rau dynamic los yog me ntsis vibrating daim ntaub ntawv.
Cov txheej txheem txheej txheem:
1. Sib tov ob -ib feem silicone raws li qhov sib piv (feem ntau 1: 1), nplawm kom huv si kom tsis txhob muaj cua npuas.
2. Siv cov khoom siv silicone kom ua tiav qhov kev sib txuas ntawm qhov chaw uas cov hlau lead tawm ntawm cov hlau sheath. Xyuas kom ib txheej txuas ntxiv nrog qhov tsawg kawg nkaus thickness ntawm 3 hli, sau tag nrho cov khoob.
3. Tso cai rau kev kho mob ntawm chav tsev kub rau 24 teev (los yog ceev los ntawm cua sov ntawm 60℃rau 2 teev).
4. Xaub lub tshav kub fluoroplastic-shrink tube (inch 2-}3 mm loj dua lub foob) hla lub silicone kho. Siv cov cua sov kom txo tau nws, tom qab ntawd muab ob lub qhov kawg ntawm lub raj nrog lub dab ntawm silicone los tsim ob txheej txheej thaiv.
(2) High-Tsub Humid Ib puag ncig (120℃~ 250℃/ 248℃F ~ 482℃F; piv txwv li, chav nyob ib puag ncig, siab-kub kua cua sov)
Cov Khoom Siv Pom Zoo: Siab-Tub kub Epoxy Resin (nrog lub iav hloov pauv kub, Tg, Ntau dua lossis sib npaug li 150℃). Muaj cov rwb thaiv tsev zoo heev, zoo dua qhov kub thiab txias, thiab siab txhua yam muaj zog. Nco tseg: kev kho kom zoo yog qhov tseem ceeb.
Cov txheej txheem txheej txheem:
1. Sib tov cov epoxy resin thiab hardener raws li cov chaw tsim khoom cov lus qhia (xws li 3: 1 piv). Do thiab cia nws zaum rau 10 feeb kom npuas kom dim.
2. Nrog lub rhaub kawg tig mus rau sab saud, maj mam hliv cov epoxy rau hauv lub plhaub qhib, sau nws mus rau theem li 5 hli saum npoo (tsis txhob hla dhau).
3. Kho nyob rau hauv qhov cub siv ib tug stepped profile: 1 teev ntawm 80℃→ 2 teev ntawm 120℃→ txias lawm.
4. Tshawb xyuas qhov kho qhov chaw. Yog tias muaj npuas lossis tawg, siv txheej txheej thib ob thiab rov kho - kho.
5. Kev xaiv, ntxiv lub tes tsho tiv thaiv stainless hlau sab nraud rau kev cais cov dej noo ntxiv.
(3) Corrosive Humid Ib puag ncig (xws li, acid / alkali daws, ntsev tsuag)
Cov ntaub ntawv pom zoo: Polytetrafluoroethylene (PTFE) Sealing lossis Fluorocarbon Rubber Potting. Ob leeg tiv taus cov kua qaub thiab alkalis, ua rau lawv haum rau cov khoom siv hluav taws xob.
PTFE Sealing: Tshuab lub tes tsho PTFE kom phim lub rhaub kawg qhov ntev. Xaub nws hla cov hlau lead thiab siv lub tshav kub- xovxwm txheej txheem los tsim ib lub foob kaw ntom nti nrog cov hlau sheath.
Fluorocarbon Rubber Potting: Sib tov thiab siv fluorocarbon roj hmab (tiv taus txog li 200 degree). Tom qab kub kho, ntxiv txheej txheej ntawm PTFE cua sov-shrink tubing rau dual corrosion kuj.
(4) Kev kub siab heev-Qhov kub ib puag ncig (Ntau dua lossis sib npaug ntawm 250℃/ 482℃F; piv txwv li, siab -siab zog)
Txoj Kev Pom Zoo: Iav- mus rau - Hlau Sealing. Cov hlau lead yog dhau los ntawm lub iav insulator, uas yog tom qab ntawd fused rau cov hlau sheath nyob rau hauv qhov kub ntawm - txheej txheem sintering. Qhov no tsim ib qho hermetic, qhov sib txawv -dawb foob nrog zoo heev rwb thaiv tsev thiab kub tsis kam. Yuav tsum muaj cov cuab yeej tshwj xeeb thiab feem ntau yog siv rau siab - daim ntawv thov raug.
4. Kev teeb tsa thiab kev tu: Extending Seal Life
Kev Ceeb Toom: Lub tshuab rhaub lub tshuab kaw qhov kawg yuav tsum tau muab tso rau saum cov kua theem (yog tias ntsia ntawm lub kaum sab xis, siv ntau dua lossis sib npaug li 15 degree). Yog tias kev nkag mus tsis tau, siv cov hlau tsis muaj dej tsis zoo (nrog rau cov roj hmab fluorocarbon sab hauv) qhov twg cov hlau lead tawm.
Kev soj ntsuam tsis tu ncua: Ntsuas qhov rwb thaiv tsev tiv thaiv txhua 3 lub hlis (yuav tsum Ntau dua lossis sib npaug li 50 MΩ). Visually soj ntsuam lub foob rau cov kab nrib pleb los yog cov cim ntawm kev laus. Re- lauj kaub tam sim yog pom muaj kev puas tsuaj.
Tsis txhob Lim: Tsis txhob rub lossis khoov cov hlau lead thaum lub sijhawm teeb tsa lossis siv, vim qhov no tuaj yeem ua rau lub foob foob nrog lub hnab.
III. Cov ntsiab lus
Cov dej noo zoo- pov thawj kawg-kev sib khi rau lub tshuab cua sov yuav tsum tau kaw- lub tswv yim kaw kom haum rau cov xwm txheej ib puag ncig thiab kev ua haujlwm xav tau-los ntawm ua ntej- kev kho mob mus rau ntau yam - txheej tiv thaiv. Rau cov av noo dav dav, "Silicon + Thaum tshav kub kub-Shrink Tubing" yog siv tau. High-kub los yog corrosive ib puag ncig xav tau kev hloov kho rau Epoxy Resin, PTFE, los yog iav{11}} rau- hlau sealing. Tsis tas li ntawd, kev saib xyuas tsis tu ncua thiab kev txhim kho kom raug yog qhov tseem ceeb rau kev ua kom lub neej ntev. Tsuas yog los ntawm kev thaiv txhua qhov muaj peev xwm ya raws txoj hauv kev tuaj yeem ua haujlwm nyab xeeb thiab ruaj khov ntawm lub rhaub dej hauv qhov chaw ntub dej yuav lav tau.
