Cov Lus Qhia Tseem Ceeb: UHP Argon Valves rau 99.999% Purity Gas Systems

Hauv thaj chaw ntawm kev xa roj purity siab, qhov kev ua tiav ntawm tag nrho lub kaw lus tsuas yog muaj zog raws li nws cov khoom tsis muaj zog tshaj plaws. Rau Ultra-High Purity (UHP) argon systems, qhov twg purity theem ntawm 99.999% (5.0 qib) thiab siab dua yog qhov yuav tsum tau ua, kev xaiv cov li qub tsim nyog yog qhov kev txiav txim siab tseem ceeb hauv kev tsim kho. Cov li qub no tsis yog tsuas yog ua cov khoom siv tswj kev ntws xwb tab sis ua tus saib xyuas kev ntshiab ntawm cov roj, tiv thaiv kev ua qias tuaj ntawm cov khoom me me, cov dej noo, thiab cov pa roj hauv huab cua. Tsab xov xwm kev tshaj lij no nkag mus rau hauv cov lus qhia tseem ceeb thiab cov tswv yim tsim qauv tswj hwm. UHP argon valves, muab ib phau ntawv qhia txog kev ua haujlwm rau cov neeg tsim qauv, cov kws ua haujlwm hauv chaw ua haujlwm, thiab cov kws tshwj xeeb hauv kev tsim khoom siv semiconductor, cov cuab yeej siv los ntsuas, kev tsim tshuaj, thiab kev tshawb fawb siab heev.

Lub Luag Haujlwm Tseem Ceeb ntawm Cov Valves hauv UHP Gas Systems

Cov argon uas muaj Purity Siab Tshaj Plaws yog ib qho khoom siv tseem ceeb hauv cov txheej txheem uas rhiab heev rau txawm tias muaj kev ua qias tuaj me ntsis. Hauv kev tsim khoom semiconductor, argon yog siv rau kev sputtering, etching, thiab ua cov roj nqa khoom; nws qhov kev ntshiab ncaj qha cuam tshuam rau cov wafer yield thiab kev ua haujlwm ntawm lub cuab yeej. Hauv cov roj chromatography (GC) thiab inductively coupled plasma mass spectrometry (ICP-MS), argon purity yog qhov tseem ceeb rau kev ruaj khov, kev txwv kev kuaj pom, thiab kev ntsuas qhov tseeb. Ib lub valve uas qhia txog cov pa oxygen, dej noo, lossis hydrocarbons hauv qab ppm tuaj yeem cuam tshuam rau ntau lub hlis ntawm kev tshawb fawb lossis kev tsim khoom.

Tsis zoo li cov li qub hauv kev lag luam, cov li qub UHP tau tsim los nrog lub hom phiaj tshwj xeeb: kom tswj, tswj, thiab khaws cia cov roj kom huv. Lawv yuav tsum tsis muaj qhov xau sab hauv (kev tswj), muab kev ua haujlwm kom raug (kev tswj), thiab tsis muaj cov pa phem (kev khaws cia). Cov kev cai peb yam no txiav txim siab txhua yam ntawm lawv txoj kev tsim, txij li kev xaiv cov khoom siv mus rau qhov ua tiav ntawm qhov chaw thiab cov thev naus laus zis kaw.

Cov Qauv Tseem Ceeb: Cov Khoom Siv Rau Kev Tsim Kho

Kev xaiv cov ntaub ntawv yog thawj txoj kev tiv thaiv thiab tseem ceeb tshaj plaws los tiv thaiv kev ua qias tuaj.

• Metallurgy:
  • Stainless hlau qib: Hom 316L (cov pa roj carbon tsawg) stainless hlau yog tus qauv kev lag luam. Qib "L" txo qis carbide precipitation ntawm weld zones, tiv thaiv qhov chaw tseem ceeb ntawm corrosion thiab particulate generation. Rau cov ntawv thov uas xav tau tshaj plaws, cov li qub tsim los ntawm 316L VIM/VAR (Vacuum Induction Melted/Vacuum Arc Remelted) Tshuag tau teev tseg. Cov txheej txheem ob-yaj no txo ​​​​​​cov khoom tsis yog hlau thiab cov khoom tsis huv volatile, txhim kho kev tiv thaiv corrosion thiab polishability ntawm qhov chaw.
  • Lwm Cov Khoom Sib Xyaws: Rau cov chaw muaj xeb tshwj xeeb lossis kom txo cov hlau ua qias tuaj, Alloy C-276 (Hastelloy®) lossis Alloy 600 (Inconel®) yuav siv tau. Qee zaum Electroless Nickel (EN) plating siv rau sab hauv kom tiv taus xeb zoo dua thiab ua tiav zoo, txawm hais tias nws qhov kev nplaum thiab qhov muaj peev xwm rau micro-flakes yuav tsum tau soj ntsuam zoo.
• Cov Khoom Siv Polymer & Diaphragms:
  • Elastomer Compatibility: Cov elastomers txheem xws li Buna-N lossis Viton® tsis raug txais rau kev pabcuam UHP vim muaj kev nkag tau zoo thiab cov pa tawm. Cov khoom siv foob xaiv yog Perfluoroelastomer (FFKM), muag raws li cov cim lag luam xws li Kalrez® thiab Chemraz®. FFKM muaj kev sib raug zoo tshwj xeeb nrog yuav luag txhua cov pa roj ua haujlwm, tiv taus kub heev, thiab cov pa tawm / leachate qis heev.
  • Diaphragm Khoom: Hauv cov diaphragm li qub—hom feem ntau siv rau UHP—lub diaphragm cais lub valve stem ntawm cov pa roj. Cov diaphragm stainless hlau (feem ntau convoluted rau kev ywj pheej) yog siv rau kev siv high-cycle, high-saturation applications. PTFE-backed FFKM diaphragms muab kev sib xyaw zoo heev ntawm kev tiv thaiv tshuaj lom neeg thiab kev ywj pheej.

Cov Qauv Tsim thiab Kev Ua Haujlwm

1. Hom Valve: Lub Diaphragm Valve Dominance
   Txawm hais tias cov twj tso kua mis bellows siv rau kev siv hnyav, lub twj tso kua mis diaphragm uas ua haujlwm los ntawm lub tshuab cua yog lub luag haujlwm tseem ceeb ntawm UHP argon systems. Nws tsim muaj lub foob hermetic uas tsis muaj cov foob dynamic uas raug rau cov roj ntws.

• Sealing Mechanism: Lub diaphragm uas yoog tau raug thawb rau ntawm lub rooj zaum siab (weir) los ntawm lub zog ntawm lub actuator, ua rau lub foob hlau-rau-polymer. Thaum qhib, lub diaphragm rub rov qab tag nrho, tsim kom muaj txoj kev ntws du, tsis muaj dab tsi thaiv nrog qhov ntim tsawg kawg nkaus.
• Ntim Tuag: Ib qho lus qhia tseem ceeb. Qhov ntim tsawg (<0.1 ml yog qhov feem ntau) txo qhov kev ntes roj thaum lub sijhawm ntxuav thiab ua rau lub kaw lus khiav tawm thiab teb sai dua.

1. Kev Tiav Nto: Lub Toj roob hauv pes me me
   Qhov ntxhib ntawm qhov chaw sab hauv yog qhov tseem ceeb ntawm kev ua qias tuaj ntawm cov khoom me me thiab yog qhov chaw rau cov dej noo / oxygen nqus tau.

• Kev Ntsuas: Qhov tiav ntawm qhov chaw yog ntsuas raws li Ra (Roughness Average) lossis qhov nruj dua Rp (Mean Peak Height), ntsuas hauv micro-inches (μin) lossis micrometers (μm).
• Standard: Rau 99.999% systems, qhov tiav sab hauv ntawm ≤ 10 Ra μinch (0.25 μm) yog qhov ib txwm muaj. Rau cov ntawv thov tseem ceeb tshaj plaws, ≤ 5 Ra μinch yog teev tseg. Qhov tiav zoo li daim iav no tau ua tiav los ntawm kev ua haujlwm kom raug, ua raws li kev txhuam hniav lossis kev txhuam hluav taws xob (Electropolishing). Electropolishing tsis yog tsuas yog ua kom cov nplaim du xwb tab sis kuj ua rau cov hlau tsis xeb, tsim cov txheej chromium-nplua nuj oxide uas txhim kho kev tiv thaiv corrosion.

1. Kev Ncaj Ncees ntawm Qhov Xaus: Qhov Ntsuas Tsis Sib Tham
   Cov nqi xau raug ntsuas siv helium mass spectrometry.

• Tus Nqi Xaus Sab Nraud (Qhov Xaus Hauv Huab Cua): Qhov no yog qhov tseem ceeb heev. Cov lus qhia tshwj xeeb feem ntau yog < 1 x 10⁻⁹ atm cc/sec He. Qhov no ua kom huab cua ib puag ncig (nrog nws cov N₂, O₂, thiab H₂O) tsis tuaj yeem nkag mus rau hauv lub kaw lus.
• Tus Nqi Xaus Sab Hauv (Kev Xaus Hla Chaw Nres): Rau cov qhov dej kaw, qhov xau hla lub rooj zaum yuav tsum < 1 x 10⁻⁹ atm cc/sec He. Qhov no xyuas kom meej tias lub qhov dej muaj peev xwm cais cov ntu ntawm lub kaw lus.
• Kev Ntsuas Qhov Xaus Rooj Zaum: Feem ntau ua tiav nrog lub qhov nkag ntawm lub qhov (valve inlet) nyob rau hauv lub siab thiab lub qhov tawm hauv qab lub tshuab nqus tsev txuas nrog lub tshuab ntsuas qhov hnyav rau qhov kev ntsuas rhiab tshaj plaws.

1. Kev Huv Si thiab Kev Ntim Khoom
   Cov valve yuav tsum tau xa tuaj yam tsis muaj kuab paug.

• Cov kev cai huv huv: Cov li qub raug ntxuav kom huv si raws li SEMI PV1 lossis cov qauv sib npaug. Qhov no suav nrog kev ntxuav ultrasonic hauv cov kuab tshuaj purity siab, ua raws li kev yaug nrog dej UHP thiab cov kuab tshuaj, thiab ci hauv qab lub tshuab nqus tsev lossis ntxuav nrog nitrogen kub, qhuav kom tshem tawm cov khoom seem volatile.
• Tus lej ntawm cov khoom me me: Cov li qub feem ntau tau ntawv pov thawj tias muaj tsawg dua tus lej teev tseg ntawm cov khoom me me >0.1μm lossis >0.5μm ib cubic foot ntawm qhov ntim sab hauv.
• Ci hauv qhov cub: Cov li qub uas siv rau cov tshuab qhuav heev (<1 ppb H₂O) yuav raug teev tseg nrog lub peev xwm ci tawm thaum kub siab (piv txwv li, 200°C+) kom tsav cov dej noo uas nqus tau.
• Ntim: Lawv raug ntim rau hauv chav huv Class 100 siv cov hnab polyethylene uas tsis muaj zog thiab tsis muaj pa phem, nyob rau hauv qab kev ntxuav nitrogen qhuav, thiab kaw kom ruaj.

Kev Txuas thiab Kev Ua Haujlwm Cov Lus Qhia

• Xaus kev sib txuas: Cov khoom siv foob VCR®/Grab® uas yog hlau rau lub ntsej muag ntawm lub gasket yog cov qauv thoob ntiaj teb. Lawv muab lub foob uas tsis muaj helium, tsis muaj qhov chaw khoob siv nickel lossis 316L stainless hlau gaskets. ISO-KF (NW) flanges nrog cov gaskets tooj liab yog lwm txoj hauv kev. Cov kev sib txuas welded (orbital TIG welding) muab qhov zoo tshaj plaws hauv kev ruaj khov ntawm qhov xau rau kev teeb tsa mus tas li tab sis tsis muaj kev pabcuam.
• Kev ua haujlwm: Kev siv lub tshuab cua yog qhov zoo dua rau kev tswj chaw taws teeb thiab kev ua haujlwm tsis siv neeg. Cov cuab yeej ua haujlwm yuav tsum tau tsim los rau kev ua haujlwm kom muaj kev nyab xeeb thaum poob (qhib ib txwm lossis kaw ib txwm) kom ntseeg tau tias lub kaw lus muaj kev nyab xeeb thaum lub sijhawm tsis ua haujlwm. Cov cuab yeej ua haujlwm tes nrog cov tes tuav vernier yog siv rau cov valves uas tsis tshua kho. Lub cuab yeej ua haujlwm yuav tsum muab lub zog txaus los kaw lub diaphragm tiv thaiv lub rooj zaum thoob plaws nws lub neej ntsuas.

Cov Qauv thiab Ntawv Pov Thawj

Kev ua raws li cov qauv uas tau teeb tsa ua rau muaj kev lees paub txog qhov zoo thiab kev ua tau zoo.

• SEMI Standards: Cov qauv ntsuas ntawm kev lag luam semiconductor, tshwj xeeb yog SEMI F78 rau diaphragm li qub.
• ASTM Cov Qauv: ASTM G93 rau cov txheej txheem ntxuav.
• CE / PED: Rau cov lus qhia txog cov khoom siv siab hauv Tebchaws Europe.
• Cov ntaub ntawv pov thawj: 3.1 Daim Ntawv Pov Thawj Khoom Siv raws li EN 10204 yog qhov yuav tsum tau ua, taug qab cov khoom sib xyaw thiab keeb kwm ua tiav ntawm cov khoom siv lub cev valve.

Cov Lus Qhia Txog Kev Xaiv thiab Kev Koom Ua Ke

Xaiv a UHP argon valve cuam ​​tshuam ntau dua li kev kuaj xyuas cov ntawv qhia tshwj xeeb.

1. Txhais Daim Ntawv Thov Kom Tseeb: Puas yog rau cov kab xa khoom uas muaj dej ntau, chaw siv (POU), lossis qhov nkag ntawm lub tshuab ntsuas uas muaj zog? Qhov siab (los ntawm cov thoob dej siab mus rau lub tshuab nqus tsev), qhov kub thiab txias, thiab lub neej voj voog uas xav tau (txhiab txhiab piv rau lab lub voj voog) yuav txiav txim siab cov kev xaiv.
2. Ua kom cov lus qhia tseem ceeb: Rau cov kav roj GC, qhov kev xau sab nraud thiab kev ua tiav sab hauv yog qhov tseem ceeb heev. Rau lub qhov dej POU hauv lub Hoobkas, lub neej voj voog thiab kev ntseeg tau tej zaum yuav yog cov tsav tsheb tseem ceeb.
3. Xav txog Tag Nrho Txoj Kev Roj: Lub valve yuav tsum sib xws nrog cov lus qhia ntawm cov raj, cov regulators, thiab cov lim dej sab saud thiab sab hauv qab. Lub valve nrog 5 Ra tiav yuav tsis ua haujlwm yog tias txuas nrog cov raj nrog 20 Ra tiav.
4. Plan rau Kev Kho Mob: To taub cov kev cai kho ntawm lub valve. Puas muaj cov khoom siv kho? Puas hloov tau lub diaphragm hauv qhov chaw yam tsis tau tshem lub cev valve tawm ntawm kab (tus qauv kho tau hauv kab)?
5. Txheeb xyuas thaum tau txais: Tshawb xyuas qhov zoo ntawm lub ntim khoom thiab saib daim ntawv pov thawj uas tau muab (kev kuaj qhov xau, kev huv, cov khoom siv). Xav txog kev kuaj xyuas qhov xau helium ua ntej kev teeb tsa.

xaus

Kev teev cov li qub rau lub kaw lus argon purity 99.999% yog ib qho kev tawm dag zog hauv kev tsim kho qhov tseeb thiab kev txo qhov kev pheej hmoo. Tsis muaj chaw rau kev cuam tshuam rau cov ntaub ntawv, kev xau, lossis kev huv. UHP diaphragm valve, nrog nws lub cev electropolished 316L VIM/VAR, FFKM cov foob, sub-10 Ra tiav, thiab helium leak rate hauv qab 1 × 10⁻⁹ atm cc/sec, sawv cev rau kev daws teeb meem thev naus laus zis rau qhov kev sib tw nruj. Los ntawm kev nkag siab thiab kev siv cov lus qhia tseem ceeb no, cov engineers tuaj yeem tsim cov txheej txheem xa roj uas tsis yog tsuas yog cov kav dej xwb, tab sis tiag tiag inert thiab ruaj khov txuas ntxiv ntawm qhov chaw purity siab, xyuas kom meej tias qhov kev ncaj ncees ntawm argon - thiab los ntawm kev nthuav dav, kev vam meej ntawm cov txheej txheem nws ua rau - yog khaws cia los ntawm lub tog raj kheej mus rau chav.

Yog xav paub ntxiv txog cov lus qhia tseem ceeb: UHP argon valves rau 99.999% purity gas systems, koj tuaj yeem mus saib Jewellok ntawm https://www.jewellok.com/ yog xav paub ntau info.