Hauv kev ua cov tshuaj lom neeg uas siv zog heev—xws li cov catalyst slurry loops, cov coking units qeeb, thiab cov high-density polyethylene (HDPE) polymerization reactors—cov rooj zaum mos polymeric lossis elastomeric yog qhov tseem ceeb heev. Cov ntxig txheem xws li PTFE, RPTFE, lossis txawm tias PEEK uas muaj zog sai sai poob rau hauv cov zog puas tsuaj ntawm cov catalyst abrasive, kev puas tsuaj ntawm lub tshuab, thiab kev hloov pauv kub heev. Thaum cov khoom mos lwj, qhov tshwm sim yog tam sim ntawd: packing leakage, line bypass, thiab cov nroj tsuag kaw tsis tau xav txog.
Txhawm rau kom lav tau lub sijhawm ua haujlwm ntawm cov khoom siv thiab kev sib cais kiag li hauv cov chaw tsis zoo, cov kws tshaj lij txog kev ua haujlwm tsis siv neeg thiab cov kws ua haujlwm txhim khu kev ntseeg tau hloov pauv ntawm cov khoom siv dav dav. Cov kev daws teeb meem nyob rau hauv cov khoom siv tsim kho zoo heev.cov hlau zaum pob valves.
At NSW VALVE LUB TUAM TXHAB (nswvalve.com), peb tsim cov khoom siv siab, kev pabcuam hnyavcov hlau zaum pob valvestsim los tshem tawm cov hom kev ua tsis tiav ntawm kev yaig thiab thermal khi thaum xa cov bi-directional, kaw nruj.
1. Supersonic Metallurgy: HVOF Txheej Txheem rau Cov Hlau Zaum Pob Valves
Qhov kev ntseeg siab yooj yim ntawm kev pabcuam hnyavcov hlau zaum pob valvesyog txiav txim siab los ntawm kev sib raug zoo ntawm daim ntawv cog lus thiab qhov nyuaj ntawm nws lub ntsej muag coatings. Es tsis txhob cia siab rau cov tshuaj electroplating,NSW VALVE LUB TUAM TXHABcov khoom sivRoj Pa oxygen Ceev (HVOF)kev txau tshuaj thermal. Cov txheej txheem no siv cov carbide matrices siab heev rau cov khoom siv high-alloy, suav nrog ASTM A351 CF8M, CF3M, thiab Super Duplex stainless steels.
Thaum peb cov txheej txheem HVOF tshwj xeeb, cov khoom sib xyaw ua ke tawv tau nkag mus rau hauv cov kwj deg hlawv uas siv oxygen thiab roj kerosene zoo. Cov khoom me me nrawm mus rau qhov ceev supersonic tshajMach 3, hloov lub zog kinetic loj heev mus rau hauv ib txheej tuab, porosity qis heev ($< 0.5\%$) interlocking. Lub zog sib txuas ntawm cov khoom siv kho tshuab ua rau muaj zog tshaj $10,000 \text{psi}$ ($69 \text{MPa}$), kom ntseeg tau tias cov txheej tawv ntawm pebcov hlau zaum pob valvesyuav tsis delaminate nyob rau hauv qhov muaj zog hydrodynamic shear.
| Txheej Matrix | Cov Khoom Siv Tseem Ceeb | Qhov Ntau Yam Micro-Hardness | Kub Tshaj Plaws | Cov Ntawv Thov Ib Txwm Muaj |
|---|---|---|---|---|
| Tungsten Carbide (WC-Co-Cr) | Cobalt-Chromium-Nickel | 68 – 72 HRC | $750^\circ\text{F}$ ($400^\circ\text{C}$) | Catalyst Slurry, FCCU Slurry, Slime Tailings |
| Chromium Carbide ($Cr_3C_2\text{-NiCr}$) | Nickel-Chromium | 56 – 62 HRC | $1500^\circ\text{F}$ ($815^\circ\text{C}$) | Kev ncua sijhawm Coking, Kev tsim kho dua tshiab ntawm Molecular Sieve |
| Stellite 6 / 12 | Cov Tshuaj Kho Mob Cobalt-Base | 40 – 48 HRC | $1000^\circ\text{F}$ ($538^\circ\text{C}$) | Cov Pa Dej Siab, Cov Dej Pub Hauv Boiler |
Kev Xaiv Txheej Txheem Rau Daim Ntawv Thov:
- Tungsten Carbide (WC-Co-Cr): Tshwj xeeb tsim rau kev puas tsuaj loj heev hauv peb cov khoomcov hlau zaum pob valvesLub matrix muab qhov micro-hardness txog li72 HRC, ua haujlwm ua ib lub cuab yeej tiv thaiv tsis pub nkag mus tiv thaiv kev ua haujlwm ntawm cov catalyst fines thiab silica solids.
- Chromium Carbide ($Cr_3C_2\text{-NiCr}$)Tsim los rau cov khoom siv oxidizing kub siab. Nws khaws nws cov qauv crystalline ruaj khov txog li $ 1500 ^ \ circ \ text {F} $, tiv thaiv kev tawg me me thiab kev tawg uas feem ntau ua rau kev lag luam puas tsuajcov hlau zaum pob valvesthaum lub sijhawm thermal shocks sai.
2. Tshem Tawm Qhov Tawg Tom Qab Los Ntawm Mate-Lapping Mechanics
Ib qho kev nkag siab yuam kev ntau ntawm cov neeg tsim cov kav dej yog tiascov hlau zaum pob valvesyuav tsum tau ua tib zoo saib xyuas qhov sealing tightness.NSW VALVE LUB TUAM TXHABtshem tawm cov kev hla dhau lub rooj zaum tom qab los ntawm ib chav tshwj xeeb, ib chavCov Txheej Txheem Sib Tham Txog Kev Sib Tham.
Es tsis txhob siv cov khoom sib tsoo ua ke nrog cov pwm txheem, txhua lub pob tau txuas nrog nws lub nplhaib hlau tshwj xeeb. Cov kws kho tshuab siv cov txheej txheem ntau theem nrog cov khoom siv pob zeb diamond-abrasive zoo dua, ua tiav mus rau ib qho1-micron grit paste.
Qhov kev sib phim tseeb no ua tiav qhov kev sib cuag tsis tu ncua, tsis muaj qhov tsis zoo $360^\circ$. Qhov sib npaug geometric uas tshwm sim sib xws nrog cov qauv sib cuam tshuam ntawm lub teeb, ua rau NSWcov hlau zaum pob valveskom ua tiav tas liISO 5208 Tus Nqi A thiab API 598 xoom-leakagekev ua tau zoo nyob rau hauv kev sim roj siab-- coj kev ua haujlwm tsis muaj npuas rau kev tsim cov hlau kaw hnyav.
3. Kev Tswj Xyuas Cov Khoom Siv Dynamic: Cov Rooj Zaum Scraper thiab Kev Ua Raws Cai Thermal
Hauv cov slurry hnyav lossis cov polymer siv, cov khoom me me uas raug kaw tuaj yeem nkag mus rau hauv lub pob thiab lub rooj zaum thaum lub sijhawm tig ib feem plaub, ua rau muaj kev sib tsoo tob lossis kev sib tsoo tshuab. NSW daws qhov teeb meem no los ntawm kev ua kom zoo tshaj plawsLub Rooj Zaum Scraper Profileua ke nrog dynamic mechanical pre-loading.
[Txheej Txheem Ntws Axis] ----> ==================================================== | | [Phab ntsa lub cev valve] | | +----+--+--+----+ | Belleville | <-- Inconel 718 Caij Nplooj Ntoos Hlav (Axial Live-Loading) | Caij Nplooj Ntoos Hlav | +----+--+--+----+ | | +----+--+--+----+ | Lub Rooj Hlau | <-- HVOF Supersonic Hard-Coating (>= 68 HRC) +----+--+--+----+ \ \ [Ntse Scraper Ntug] <-- Txiab polymer tsim thiab nplai \______ ( ) ( Pob ) <-- Precision Mate-Lapped Closure Element (_____)
Tus Kheej-Ntxuav Ntug Profile
Lub hau kaw tseem ceeb ntawm peb lub nplhaib hlau muaj ib lub ntug ntse, ua los ntawm cov duab geometric. Thaum lub pob txav mus rau qhov chaw kaw, qhov profile no ua haujlwm zoo li lub tshuab scraper, txiav cov nplais, cov khoom siv crystalline, thiab cov polymer nplaum ua ntej lawv nkag mus rau hauv lub ntsej muag kaw ntawm peb lub...cov hlau zaum pob valves.
Kev Them Nyiaj Rau Kev Nthuav Dav Thermal
Cov txheej txheem tshuaj lom neeg kub siab ua rau muaj kev pheej hmoo ntawm kev sib txuas thermal. Thaum cov khoom siv txheej txheem kub nce siab, qhov nrawm ntawm lub pob tuaj yeem nthuav dav dua lub cev valve, xauv lub valve rau hauv qhov chaw.
NSW hla dhau qhov teeb meem no los ntawm kev teeb tsa cov khoom siv hnyav, tiv taus xebInconel 718 Belleville nthwv dej caij nplooj ntoos hlavtom qab lub rooj sib dhos. Qhov kev teeb tsa no tswj hwm lub foob ruaj ntseg qis-siab thaum muab qhov kev ywj pheej uas xav tau los nqus cov thermal nthuav dav.
4. Kev Ua Raws Cai Ib puag ncig: Kev Ntim Khoom Low-E thiab Kev Nyab Xeeb Hluav Taws
Cov lus txib ib puag ncig thoob plaws North America tsis pub leej twg ua phem rau cov pa phem uas tawm hauv lub cav. Cov qia valve yog qhov ua rau muaj kev ua txhaum EPA LDAR (Kev Tshawb Nrhiav thiab Kho Qhov Leak).
Kev Tiv Thaiv Kev Tso Pa Tawm Rau Cov Neeg Khiav Dim: NSWcov hlau zaum pob valvessuav nrog lub rooj sib dhos ntim khoom uas muaj sia nyob uas tau ntawv pov thawj rauAPI 641rau cov li qub ib lub quarter-turn, sivAPI 622Cov khoom ntim graphite uas ua los ntawm cov pwm. Lub nra hnyav raug tswj tas li los ntawm Belleville spring washers, ua kom cov kav dej xau tau zoo100 ppmvthaum lub sijhawm ntev thermal cycles.
Kev Nyab Xeeb Hluav Taws Xob: Muaj ntawv pov thawj tag nrho rauAPI 607 thiab API 6FAcov qauv. Vim tias qhov ciam teb siab, cov khoom kaw, thiab cov foob ntawm lub qia tsuas yog muaj cov hlau ua los ntawm cov hlau tawv thiab cov graphite uas muaj zog heev, lub valve tswj tau qhov sib cais tag nrho thaum raug hluav taws kub hydrocarbon ($1400^\circ\text{F}$ rau $1800^\circ\text{F}$).
Cov Lus Qhia Txog Kev Yuav Khoom Siv Engineering
Rau cov ntaub ntawv qhia txog qhov project uas yuav los tom ntej, cov lus qhia txog cov khoom siv kav dej (PMS), lossis cov npe ntawm cov neeg muag khoom, cov kev pabcuam hnyavcov hlau zaum pob valvesseries los ntawmNSW VALVE LUB TUAM TXHABnta cov qauv tsim qauv hauv qab no:
- Cov Cai Tsim Qauv & Kev Tsim KhoomDaim ntawv pov thawj: API 6D, ASME B16.34, API 608, ISO 17292
- Muaj Cov Chav Kawm SiabASME Chav Kawm 150, 300, 600, 900, 1500, 2500
- Qhov Loj Spectrum: NPS 2″ rau NPS 48″ (Muaj nyob rau hauv Tag Nrho Chaw Nres Nkoj thiab Txo Qhov Bore)
- Kev Ciam Teb SiabASTM A216 WCB/WCC, A351 CF8M/CF3M, A890 4A/5A/6A (Duplex/Super Duplex), Hastelloy C276, Inconel 625
- Kev Kho Kom Lub Rooj Zaum Thiab Pob Tawb Ruaj Khoov: HVOF Super-Dense Tungsten Carbide (WC-Co-Cr) los yog Chromium Carbide ($Cr_3C_2\text{-NiCr}$)
- Cov Qauv Kaw Uas Tau Txheeb Xyuas LawmISO 5208 Qib A, API 598, ANSI/FCI 70-2 Chav Kawm VI
- Cov Ntawv Pov Thawj Tswj Xyuas: NACE MR0175 / ISO 15156, API 607 (Kev Nyab Xeeb Hluav Taws), API 641 (Kev Ua Raws Cai rau Kev Tso Pa Tawm)
Lub sijhawm tshaj tawm: Lub Xya Hli-09-2026