C68700 txhuas tooj dag tau nrov xyoo dhau los. C70600 tooj liab nickel hloov nws nyob rau hauv feem ntau seawater daim ntaub ntawv. Txawm li cas los xij, C68700 tseem tshwm sim hauv cov dej tshiab thiab qee qhov dej tsis zoo. Cov neeg yuav khoom yuav tsum paub qhov txawv.
Dab tsi yog qhov txawv ntawm C70600 thiab C68700?
| Khoom | C70600 (90/10 tooj liab nickel) | C68700 (Aluminium Brass) |
|---|---|---|
| tooj liab% | 88.0–90.0 | 76.0–79.0 |
| Nickel% | 9.0–11.0 | 0 |
| Zinc% | Tsawg dua los yog sib npaug li 0.05 | 20.0–23.0 |
| Aluminium % | 0 | 1.8–2.5 |
| Hlau% | 1.0–1.8 | Tsawg dua los yog sib npaug li 0.06 |
| Arsenic% | 0 | 0.02–0.10 |
| Seawater corrosion | Zoo heev | pluag |
| Cov dej tsis huv corrosion | Zoo heev | Zoo |
| Cov dej khov | Zoo heev | Nruab nrab |
| Dezincification txaus ntshai | Tsis muaj | Siab (tsis muaj arsenic) |
| Ammonia tsis kam | Nruab nrab | pluag |
| Biofouling kuj | Zoo heev | Zoo |
| Thermal conductivity (W / m · K) | 45 | 100 |
| Nqi | Nruab nrab | Tsawg |
| Lub neej kev pab cuam - dej hiav txwv | 20-30 xyoo | 2-8 xyoo |
Vim li cas C68700 raug kev txom nyem los ntawm dezincification tab sis C70600 tsis?
Dezincification yog xaiv tshem tawm zinc los ntawm tooj dag. C70600 tsis muaj zinc, yog li nws yeej tsis dezincifies.
Hauv C68700, zinc corrodes nyiam nyob rau hauv qee yam dej. Cov zinc dissolves tam sim ntawd, tawm hauv qab ntxeem tau, tsis muaj zog tooj liab. Lub raj poob lub zog thiab txhim kho pinhole leaks.
Cov xwm txheej uas ua rau dezincification hauv C68700:
Stagnant los yog dej ntws qis (qis dua 0.5 m / s)
Cov dej kub (siab tshaj 60 degree)
Tsawg pH (qis dua 6.0) lossis siab pH (siab dua 9.0)
Chlorides tam sim no (seawater lossis dej brackish)
| dej mob | C68700 dezincification kev pheej hmoo | C70600 kev pheej hmoo |
|---|---|---|
| Dej ntshiab, ntws | Tsawg | Tsis muaj |
| Cov dej tsis huv, nyob ruaj khov | Nruab nrab mus rau siab | Tsis muaj |
| Cov dej khov | Siab | Tsis muaj |
| Dej hiav txwv | Siab heev | Tsis muaj |
| Kub kub siab tshaj 60 degree | Siab | Tsis muaj |
Yuav ua li cas dezincification zoo li ntawm C68700:
Tube nto hloov xim av los yog reddish
Mos, chalky tsos thaum khawb nrog rab riam
Poob lub nplhaib hlau thaum tapping
Pinhole leaks tsis pom phab ntsa thinning
Kev tiv thaiv rau C68700:
Khaws cov dej ntws siab tshaj 1.0 m / s
Khaws dej kub hauv qab 60 degree
Siv arsenic -inhibited C68700 (tus qauv niaj hnub)
Tab sis nyob rau hauv dej hiav txwv - txawm inhibited C68700 tsis nyob rau hauv 5 xyoo
Cov hlau twg ua dej hiav txwv zoo dua - C70600 lossis C68700?
C70600 tuav dej hiav txwv. C68700 tsis. Qhov no yog qhov sib txawv loj tshaj plaws ntawm ob lub alloys.
| Seawater mob | C70600 xav tau lub neej | C68700 xav tau lub neej |
|---|---|---|
| Dej hiav txwv huv, 2.0 m / s, 25 degree | 20-30 xyoo | 5-8 xyoo |
| Dej hiav txwv, 1.5 m / s | 10-15 xyoo | 2-4 xyoos |
| Dej hiav txwv | Pitting kev pheej hmoo hauv 2-5 xyoos | Kev tshem tawm sai sai hauv 1-2 xyoos |
| Kev tshaj tawm siab (siab tshaj 2.5 m / s) | Kev nyab xeeb mus txog 3.5 m / s | Kev yaig pib siab dua 2.0 m / s |
| Dej hiav txwv nrog xuab zeb los yog khib nyiab | Zoo erosion kuj | Tsis zoo - soft nto erodes sai sai |
Cov ntaub ntawv ntiaj teb tiag:
Ib tug ntug dej hiav txwv fais fab nroj tsuag hloov ntawm C68700 rau C70600. Tube lub neej nce ntawm 6 xyoo mus rau 25+ xyoo.
Ib tsob nroj desalination siv C68700 retubed txhua 4 xyoos. Tom qab hloov mus rau C70600, tsis xav tau retube rau 15 xyoo.
Kev xaus rau dej hiav txwv: Siv C70600. C68700 tsis haum rau kev teeb tsa dej hiav txwv mus tas li.
Qhov twg yog C68700 tseem yog qhov kev xaiv zoo es tsis yog C70600?
C68700 yog siv tau rau cov dej tsis qab thiab qee cov dej tsis zoo. Nws yuav tsum tsis txhob siv rau hauv dej hiav txwv.
Cov ntawv thov zoo rau C68700:
Cov dej txias txias yees
Dej los yog pas dej kub exchangers
HVAC condensers nyob rau sab dej tshiab
Tsawg chloride muaj dej txias (hauv qab 500 ppm Cl)
Kev pabcuam kub qis (hauv qab 60 degree)
Cov ntawv thov tsis zoo rau C68700 (siv C70600 hloov):
Ib qho kev sib cuag dej hiav txwv
Cov dej khib nyiab (estuaries, ntug dej hiav txwv, 500-5,000 ppm Cl)
Cov dej txias txias (siab tshaj 60 degree)
Cov dej tsis zoo
Dej nrog ammonia lossis dej phwj tuaj
| Hom dej | Qib chloride | Pom zoo alloy |
|---|---|---|
| Dej ntshiab | Hauv qab 500 ppm | C68700 los yog C70600 (ob leeg txais tau) |
| Brackish | 500-5,000 ppm | C70600 nyiam |
| Brackish rau saline | 5,000-20,000 ppm | C70600 xav tau |
| Dej hiav txwv | Tshaj 20,000 ppm | C70600 los yog C71500 |
Cov hlau twg yog qhov zoo dua rau kev yaig - C70600 lossis C68700?
C70600 muaj kev tiv thaiv corrosion zoo dua. C68700 erodes ntawm qis qis tshaj tawm.
| Dej ceev (m / s) | C70600 | C68700 |
|---|---|---|
| 1.0 | Tsis muaj erosion | Tsis muaj erosion |
| 1.5 | Tsis muaj erosion | Tsis muaj erosion |
| 2.0 | Tsis muaj erosion | Kev yaig me me ua tau |
| 2.5 | Tsis muaj erosion | Erosion pib |
| 3.0 | Txais tau, hnav me me | Qhov tseem ceeb erosion |
| 3.5 | Erosion pib | Kev yaig hnyav |
| 4.0 | Kev yaig hnyav | Ua tsis tiav hauv lub hlis |
Vim li cas C70600 yeej:
Cov npib tsib xee-hlau matrix hauv C70600 yog ib qho nyuaj thiab tiv taus ntau dua rau cov khoom siv. C68700 muaj zinc cov ntsiab lus siab (20-23%), uas ua rau nws softer thiab yooj yim rau erode.
Yog tias koj lub kaw lus muaj qee yam ntawm cov xwm txheej no, xaiv C70600:
Cov twj tso kua mis siab xa tawm ntau dua 2.5 m / s
Cov xuab zeb los yog khib nyiab hauv dej
Nquag startups thiab shutdowns (ntev tshaj tawm spikes)
Cov yeeb nkab ntev khiav nrog turbulence ntawm lub luj tshib
Dab tsi yog 20 xyoo tus nqi sib txawv ntawm C70600 thiab C68700?
C70600 tus nqi ntau dua ua ntej tab sis kav ntev dua. C68700 yog pheej yig dua pib tab sis yuav tsum tau hloov ntau zaus.
Kev xav: 19mm OD x 1.24mm phab ntsa raj, kev pabcuam dej hiav txwv, 20 xyoo kev ua haujlwm, tsis muaj lwm yam kev ua tsis tiav.
| Tus nqi tsim nyog | C70600 | C68700 |
|---|---|---|
| Tube nqi ib 'meter' | $1.00 | $0.65 |
| Cia siab tias yuav muaj sia nyob hauv dej hiav txwv | 25 xyoo | 5 xyoo |
| Tus naj npawb ntawm retubes xav tau hauv 20 xyoo | 0 | 3 |
| Tag nrho cov khoom siv tube nqi (20 xyoo) | $1.00 ib meter | $2.60 per meter |
| Downtime nqi ib retube | $0 | $10,000 - $50,000 nyob ntawm qhov system |
| Tus nqi zog rau kev teeb tsa | 1 x (pib) | 4x (pib + 3 retubes) |
Yeej ntawm tus nqiib: c70600. Tus nqi siab dua, tab sis qis dua tus nqi tag nrho lub neej.
Yuav ua li cas txheeb xyuas C70600 vs C68700 ntawm qhov chaw?
| Txoj kev | C70600 (90/10 tooj liab nickel) | C68700 (Aluminium Brass) |
|---|---|---|
| Pom xim | Salmon liab | Yellow -kub (xim daj) |
| Magnet xeem | Magnetic tsis muaj zog heev | Tsis yog-magnetic |
| PMI (XRF phom) | 9-11% yog '<0.1% Zn | 20-23% Zn, 1.8-2.5% Al |
| Cov ntaub ntawv xeem | Nyuaj, resists ntaub ntawv | softer, ntaub ntawv yooj yim |
| Acid Test (poob ntawm nitric acid) | Ntsuab -xiav tshuaj tiv thaiv | Blue tshuaj tiv thaiv nrog fizzing |
Feem ntau txhim khu kev qha tus txheej txheem:
PMI nrog rab phom XRF. Siv 10 vib nas this. Paub meej tias npib tsib xee (C70600) lossis zinc thiab txhuas (C68700).
FAQ
C68700 puas tuaj yeem siv rau hauv dej hiav txwv rau lub sijhawm luv luv?
Lub sij hawm luv (ob peb hlis) tej zaum. Ntev (xyoo) no. Txawm tias 12 lub hlis ntawm cov dej hiav txwv tsis tu ncua ua rau muaj kev cuam tshuam loj ntawm C68700. Rau kev teeb tsa dej hiav txwv mus tas li, siv C70600.
Dab tsi yog qhov zoo ntawm C68700 tshaj C70600?
Cov khoom siv qis dua thiab cov thermal conductivity ntau dua (100 vs 45 W / m·K). Rau cov ntawv thov dej tshiab uas tsis muaj kev pheej hmoo corrosion, C68700 ua haujlwm zoo thiab raug nqi tsawg. Rau cov dej hiav txwv, tus nqi zoo dua ploj tom qab thawj retube.
Puas yog C70600 puas tau raug kev txom nyem los ntawm dezincification?
No. C70600 tsis muaj zinc. Dezincification yog tshuaj tsis yooj yim sua. Qhov no yog vim li cas tooj liab nickel hloov tooj dag alloys hauv seawater siv.
Vim li cas qee lub tuam txhab hluav taws xob qub tseem siv C68700?
Vim lawv tau tsim thiab tsim 30-50 xyoo dhau los ua ntej C70600 tau dav dav. Ntau tau txij li retubed nrog C70600. Cov tseem siv C68700 feem ntau retube txhua 5-8 xyoo.
Dab tsi yog qhov dej siab tshaj plaws rau C68700?
60℃rau kev pabcuam txuas ntxiv. Tshaj 60 degree, dezincification nrawm nrawm. C70600 tuav txog 315 degree. Rau cov dej kub los yog chav condensate txias, C70600 yog qhov kev xaiv meej.
Kuv puas tuaj yeem txuas C68700 raj zoo li C70600 raj?
C68700 yog weldable tab sis tsawg dua. Siv aluminium bronze muab tub lim hlau. C70600 vuam yog yooj yim dua nrog tus qauv ERCuNi muab tub lim. Rau kev kho thaj chaw, C70600 yooj yim dua thiab txhim khu kev qha.
Dab tsi yog qhov aluminium hauv aluminium brass tiag tiag?
Aluminium pab tsim cov yeeb yaj kiab oxide tiv thaiv ntawm lub raj nplaim. Qhov no txhim kho kev tiv thaiv corrosion dua li niaj zaus tooj dag (xws li C44300 Admiralty tooj dag). Arsenic kuj ntxiv rau inhibit dezincification.
Kuv yuav hloov C68700 uas twb muaj lawm rau C70600 li cas?
Kev hloov ncaj qha yog ua tau. Tib OD thiab phab ntsa thickness ua haujlwm. C70600 muaj zog me ntsis, yog li cov ntawv nthuav dav yuav xav tau kev hloov kho. Kev hloov pauv cua sov - C70600 muaj qhov qis dua, yog li xav tau ntau lub raj lossis lub plhaub loj dua rau tib lub luag haujlwm kub.
Peb Cov Khoom Siv Tsim Khoom
| Khoom siv | Specification | Ntau |
|---|---|---|
| Kab rov tav extrusion xovxwm | 1500T | 1 |
| Kab rov tav extrusion xovxwm | 2500T | 1 |
| Txias lub rooj zaum | 10m ntev | 6 |
| Cold drawing bench (hnyav phab ntsa) | 6 m luas | 4 |
| Cov menyuam straightener | OD 6-50mm | 3 |
| Rotary straightener | OD 50-90mm | 1 |
| Annealing rauv (tswj cua) | 650-800 degree | 3 |
| Txiav-tawm tshuab (automatic) | OD 6-90mm | 2 |
| U- tshuab dabtsi yog khoov | OD 12-38 mm | 2 |
| Xaus ntsej muag thiab deburring | Txhua qhov ntau thiab tsawg | 2 |
| Eddy tam sim no tester | 100% ECT | 3 |
| Hydrostatic Tester | 4 chaw nres tsheb | 1 |
| PMI phom (XRF) | Hauv -kev ua pov thawj | 2 |
Kev kuaj thiab ntim
Cov kev sim
Eddy tam sim no xeem (ECT) rau ASTM E243 - 100% ntawm cov hlab
Hydrostatic kuaj txog li 20 MPa - 100% ntawm cov hlab
PMI (XRF) rau kev txheeb xyuas alloy - txhua qhov cua sov
Tensile thiab hardness test - ib lub tshav kub
Flattening thiab expansion test - per heat
Microscopic grain ntsuam xyuas - ib lub tshav kub
Ntim cov qauv
Lub kaus mom yas kawg ntawm ob qhov kawg
Ib tug neeg polybag wrapping
Ntoo crate (ISPM15 fumigated) rau export
Moisture- ntawv pov thawj + desiccant
Daim ntawv lo nrog cov xov tooj cua sov, qhov loj, ntau
Peb cov khoom siv tooj liab
| Yam khoom | Cov alloys | Cov qauv | Tej kev siv |
|---|---|---|---|
| Tube (seamless) | C70600, C71500, C12200, C44300, C68700 | ASTM B111, ASME SB111 | Thaum tshav kub kub exchangers, condensers, marine piping |
| Tube (seamless) | C12200, C70600, C71500 | ASTM B88, ASTM B466 | Cov kab dej, roj kab, shipbuilding |
| Qws / bar | C11000, C36000, C46400, C63000 | ASTM B16, ASTM B124 | Valve stems, fittings, marine hardware |
| Hlau | C11000, C16200, C19400 | ASTM B1, ASTM B3 | Hluav taws xob conductors, vuam hlau |
| Sawb / coil | C11000, C19400, C26000, C26800, C52100 | ASTM B152, ASTM B465 | Terminals, springs, transformer windings |
| Phaj / ntawv | C10100, C11000, C12200, C70600, C71500, C46400 | ASTM B152, ASTM B171 | Tube nplooj ntawv, baffles, tshav kub exchanger phaj |
