Ifan Hoobkas 30+ xyooTxais kev txhawb nqa xim / loj Customized them nyiaj yug dawb {}} Nrhiav catalog thiab cov qauv dawb. Qhov no yog peb FacebookLub vas sab: www . Facebook . com, Nyem rau saib xyuas yog tias cov khoom lag luam video . sib piv nrog cov khoom lag luam dhaux, peb li cov khoom lag luam los ntawm qhov zoo tshaj plaws yog koj qhov kev xaiv zoo tshaj plaws, zoo siab tos txais yuav!

Cov Txheej Txheem Kho Cov Txheej Txheem Ntawm Brass Rooj Vag Valve: Qhov zoo ntawm Chrome plating, Galvanizing, thiab lwm yam.

Lub hauv paus rau phau ntawv

Cov tsos kev kho mob li qub mus dhau kev ua kom zoo nkauj, thiab kev ua kom zoo nkauj rau cov khoom siv dag zog, thiab muaj kev ua kom zoo dua qub, thiab cov khoom siv tsis sib haum xeeb kom tiv thaiv .}} kev tshuaj xyuas no Tshawb cov yam ntxwv kev ua txuj ci, kev ua tau zoo, thiab cov lus qhia txog kev ua kom zoo rau cov khoom lag luam ntawm tooj dag valve kev lag luam {}}

Chrome plating: Corrosion Kuj thiab Hardness Li

Cov Txheej Txheem Hluav Taws Xob Hluav Taws Xob

Chrome plating (CR plating) ntawm tooj dag muaj cov txheej txheem hluav taws xob uas muaj cov txheej txheem hluav taws xob roj ntsha (croso₄). Cov txheej txheem tseem ceeb muaj xws li:

PLATING thickness: Feem ntau 5-25} μm, nrog dai kom zoo nkauj ntawm5-10 μm {} .

Kev khiav hauj lwm: Kub {50-60 degree, tam sim no ceev 30-50 A / dm², pH1.0-1.5.

Npaj Npaj Ntev: Degreasing, acid etching (10% h chel), thiab flash nickel plating (} μm) txhawm rau txhim kho adhesion .

Qhov Zoo

Tshwj kev txiav txim siab corrosion tsis kam: Chrome's Passive Oxide Txheej (Cr₂o₃) Tsis kam:

Dej qab ntsev: {5000+}} nacl post tsis muaj xeb liab (ASTM B117).

Cov Dej Chlorinated:<0.01 mm/year corrosion rate in 2 ppm Cl⁻ water.

Siab tawv: {800-1200 hv, {3-4 × nyuaj dua tooj dag (} hv), txo kev hnav:

Kev coj qhov tob<0.05 mm after 10,000 cycles (vs. 0.2 mm for bare brass).

Tsawg sib txhuam coefficient: {0.15-0.20 vs . Brass '0 {}}}}}}}}}}}}}}}}}}}}}}}}} 40% qis ua lub zog.

Daim Ntawv Thov Kev Pab Cuam

Cov Tshuab Marine: 10 μm nyuaj chrome-plated li qub nyob rau hauv seaterater (3.5% nacl) qhia<0.02 mm/year corrosion, outperforming bare brass by 5×.

Kev siv li qub: 20 μm chrome-plated lub rooj vag nyob hauv acidic condensate (pH 4) kom muaj kev sib luag ntawm {xyoo rau kev kho tsis tau muaj li qub.

Galvanizing: Tus nqi ntawm kev tiv thaiv corrosion

Kub-DIP galvanizing txheej txheem

Kub-Dip Galvanizing Hlau Daj Khaub Ncaws Hauv Molten Zinc ({{}}} degree), sib sau ib qho zinc-anky txheej:

Txheej qauv: Ntau txheej (Zn ,₅ers (Zn₅fe₂, Zn₂fe, Fezn₇), Tag Nrho Thickness {{0} μm (8 μm rau<1/2", 25 μm for >4").

Kev Kho Mob Tom Qab: Chromate Confersion txheej (Daj lossis meej) kom ntim cov hws thiab txhim kho corrosion corrosion .

Cov ntsiab lus tseem ceeb

Kev tiv thaiv kev tiv thaiv corrosion: Zinc (e℃=-0.76 v) ua raws li anode, tiv thaiv tooj dag (e degree=+0.34 v):

Nyob rau hauv lub cev raug mob, zinc corrodes ntawm 0.01-0.03 hli / xyoo, txi nws tus kheej rau tooj dag.

Cov Txheej Txheem Sib Tw: Npog cov geometries, suav nrog cov xov thiab recesses, nrog 95% thickness sib txawv .

Tus Nqi Muaj Zog: 30-50% cheaper than chrome plating for large valves (>2 "), zoo tagnrho rau cov ntawv thov tsis yog-tseem ceeb tshaj plaws.

Daim Ntawv Thov

Cov Dej Sab Nraum: Galvanized li qub nyob rau hauv sprinkler system wrinkler withstand 5-8} xyoo ntawm kev hla dhau .

Irrigation Irrigation: 15 μm galvanized qub nyob rau hauv cov dej nyuaj (CACO₃ 300 PPM) qhia 0 {} mm / xyoo10- xyoo lub neej.

Electroless Nickel Plating: Kev sib txawv thiab Versatility Versatility

Autocatalytic plating txheej txheem

Electroless npib tsib (en) plating siv lub npib tsib xee-phosphorus

Phosphorus cov ntsiab lus:

Tsawg-p ({1-4% p) 500-600 hv, haum rau kev siv kub siab {}}

Mid-p ({{6-9% p): {{} hv, optimal corrosion {}}

High-p ({10-12}}}}} hv, amorphous qauv tshuaj lom zem, zoo tshaj plaws}

Tswj Thickness: {5-50} {{10-20 μm yog rau cov ntawv thov hluav taws xob.

Cov Nyiaj Tau Los

Tshwj kev txiav txim siab corrosion tsis kam:

Acidic media (5% hcl): high-p en dating kav1000+}}} .

Kev daws teeb meem Alkaline (10% NAOH):<0.01 mm/year corrosion at 60°C.

Tsis yog xim thiab sib nqus: Zoo tagnrho rau cov li qub hauv cov hlau nplaum teb; Cov tsho loj sab hauv raws kev sib txawv, txawm tias nyob hauv kev sib sib zog nqus .

Brazing compatibility: En plating (nruab nrab-p) tso cai rau tom qab plating brazing ntawm 450℃tsis muaj delamination {}}}}

Daim Ntawv Thov Kev Pab Cuam

Cov Khoom Noj Khoom Haus Thiab Dej Haus: 15 μm Cov zaub mov-qib EN (NSF 61 ua raws li) Tsis kam ntxuav cov neeg sawv cev (alkaline dapted), haum rau brewery li qub {}}

Kev Kho Mob Roj Tshuab: Tsis muaj hlau nplaum high-p en sib nqus (12% p) ntsib ISO 13485 qauv rau cov pa pev.

Lwm yam kev kho mob thiab kev txheeb xyuas

Hmoov txheej: Aesthetic thiab Kev Ua Haujlwm Tshuav Nyiaj

Kev ua: Kev thov tshuaj electrostatic ntawm polymer hmoov (epoxy, polyester), kho thaum 10-20 feeb.

Qhov Zoo:

Cov txheej tuab (50-150 μm) rau huab corrosion tsis kam (seaterater: {} {{2} {2} {2}

Cov xim dav rau kev txheeb xyuas (xiav rau dej, daj rau roj) .

Kev txwv: Txo cov cua tsis zoo (<120°C), not suitable for steam.

Anodizing: Oxide Txheej Txhim Kho

Kev ua: Electrolytic oxidation hauv sulfuric acid, sib sau ib lub ntxeem tau aluminium txheej rau Aluminium-Brass alloys.

Qhov Zoo:

Hardness 300-500 hv, hnav tsis kam rau valve stems {}}

Lub hom phiaj ntxeem tau tso cai rau qhov chaw zoo rau kev ua kom zoo nkauj .

Daim ntawv thov: Hniav li qub nyob rau hauv armectural hav nta .

Piv sib piv ntawm cov kev kho mob

Cov Txheej Txheem Xaiv thiab Kev Siv Cov Lus Qhia

Corrosion ib puag ncig

Me corrosion (coj mus rhaub dej, huab cua): Galvanizing lossis nyias chrome (5-10 μm) Suffices; nqi-kho tau rau thaj chaw li qub .

Kev mob hnyav (dej hiav txwv, acids): Tawv chrome ({{15-25 μm) lossis qib siab-p electroless npib tsib xee (12% p, 20 μm); marine li qub yuav tsum muaj 20 μm en .

Kev kub-kub (150-200 degree): Qiv el electroless npib tsib xee (3% p) lossis tawv chrome (tiv taus 250 degree) .

Ua haujlwm kom muaj kev txiav txim siab

Hnav Tsis kam: Tawv chrome (1200 hv) rau valve rooj; 20 μm coating txo kev hnav los ntawm 80% tiv thaiv liab daj brass .

Hluav Taws Xob Kev Tshaj Tawm: Zam kom tsis txhob tshaj tawm cov hmoov txhuv (hmoov, high-p en); siv chrome lossis qis-p en (conductivity 10-20%% i1 .

Khoom Noj Khoom Haus Kev Nyab Xeeb: NSF-lees paub electroless npib tsib xee lossis chrome plating (txhuas-dawb,<0.25% Pb).

Cov txheej txheem sib xyaw thiab txwv

PLATING thickness vs . kam kam:

Threaded li qub: Max 10 μm plating kom tau xov haum (iso 7-1 kam rau siab).

Kaw lub rooj zaum: 5-8 μm chrome nrog posting-plating lapping (ra<0.8μm).

Ib puag ncig kev txiav txim siab:

Hexavalent chrome plating (CRVI) yuav tsum tau kho pov tseg raws cai; Txiav txim siab sib txawv Chrome (CRIII) Xaiv (95% qis toxicity) .

Electroless npib tsim kev puas tsuaj, zoo tagnrho rau Eco-phooj ywg tsim khoom {}}

Cov ntaub ntawv tshawb fawb hauv kev kho zoo

Offshore Roj Platform Valve

Cav: {2- nti tooj dag brass hauv dej hiav txwv (3 {}}}}}}}}}}}}}}} aginal (95% rh).

Lus teb: 20 μm tawv chrome plating nrog post-chrome passivation .

Qho kawg: Tom qab 5 xyoos, tsis muaj kev xeb kev corrosion; Hnav Qhov tob<0.03 mm (vs. 0.15 mm for galvanized valve).

Muaj Acid Pipeline Valve

Nruab nrab: 5% acetic acid ntawm 60℃.

Kev kho: 15 μm High-P Electroless npib tsib xee (12% p) .

Ua yeeb yam: 8 xyoo ntawm kev pabcuam tsis muaj xau; Plaster Thickness Poob<10%.

Thaj dej lub valve valve

**

Qhov toob kas: {{1- nti valve rau dej nyuaj (caco₃ 250 ppm), {purespes {}}

Kev ua: Kub-dip galvanizing nrog daj chromate (8 μm Zn+ 0.5 μm CR) .

Qho kawg: Tom qab 10 xyoo, saum npoo qhia muaj tsawg tus xeb (zno), tsis muaj kev ua haujlwm tsis zoo.

Yav tom ntej cov qauv hauv kev kho zoo

Nanocomposite tsho nplaum

Graphene-enhanced chrome plating: 0 {. 5% graphene hauv chrome da dej nce hardness nce nyuaj rau 1500 hV, corrosion tsis kam los ntawm 300%.

Zn-Nanoceramic Composites: Zinc Txheej ci nrog rau cov nanoparticles (5-10}}}}}}} {{} mm / xyoo.

Eco-phooj ywg txheej txheem

Chaw Sib Tw Chrome Plating: CRIII plating Hloov PleXic CRVI, kev sib tham mus txog kev cov cai; corrosion Performance 90% ntawm tsoos chrome .

Dej-raws Electroless npib tsib xee: Hloov cov organic cov kuab tshuaj nrog cov kev daws teeb meem aqueous, txo cov kev daws teeb meem, txo cov tshuaj tiv thaiv voc emissions los ntawm 80% .

Cov Tshuab Ntse Txheej

Kho tus kheej kho cov txheej txheem: Microcapsules muaj corrosion inhibitors (benzotriazole) tso tawm ntawm kev puas tsuaj, kho dua 80% ntawm 0. 1 hli).

Thermochromic Txheej: Hloov xim ntawm 80 degree, qhia txog kev siv hluav taws xob qub; Ua rau pom kev soj ntsuam kev soj ntsuam Kev Ntsuam Xyuas .

Tag

The appearance treatment of brass gate valves is a critical factor in determining their service life and performance across diverse applications. Chrome plating, galvanizing, and electroless nickel plating each offer unique advantages in corrosion resistance, wear durability, and cost efficiency. By matching the treatment process to the specific operational environment and functional requirements, manufacturers and engineers can optimize valve performance while ua raws li cov qauv kev nyab xeeb thiab kev nyab xeeb . Ua ntej ntawm cov txheej txheem tooj dag zog ua ntej, ua rau lawv cov khoom siv ua haujlwm tseem ceeb ntxiv rau hauv cov kua tswj cov tshuab {}}