Vim li cas thiaj piv C70600, C71500 thiab Titanium Qib 2?
Vim hais tias tus nqi upfront tsis yog tag nrho zaj dab neeg. Cov raj pheej yig tshaj plaws tuaj yeem dhau los ua tus nqi kim tshaj tom qab 10 xyoo ntawm kev ua tsis tiav thiab hloov pauv.
Engineers feem ntau nug: yog vim li cas them nyiaj ntau rau titanium thaum C70600 ua haujlwm? Los yog vim li cas siv C70600 thaum C71500 zoo dua? Cov lus teb nyob ntawm qhov dej zoo, lub neej xav tau, thiab koj suav tus nqi li cas.
Qhov kev sib piv no suav nrog:
Cov khoom siv thiab corrosion kuj
Thermal kev ua tau zoo rau cov cua kub exchangers
5-xyoo, 10-xyoo, thiab 20-xyoo tus nqi tag nrho
Thaum xaiv txhua lub alloy
Dab tsi yog qhov txawv ntawm peb cov khoom no?
| Khoom | C70600 (90/10) | C71500 (70/30) | Titanium Qib 2 |
|---|---|---|---|
| Kev sib xyaw | 90% Cu, 10% Ni, 1.0-1.8% Fe | 70% Cu, 30% Ni, 0.5-1.0% Fe | 99% Ti, tshuav Fe, O, C |
| Qhov ceev (g / cm³) | 8.94 | 8.94 | 4.51 |
| Thermal conductivity (W / m · K) | 45 | 29 | 16 |
| Tensile zog (MPa) | 310 | 380 | 340 |
| Yield zog (MPa) | 105 | 150 | 275 |
| Elongation (%) | 30 | 30 | 20 |
| Seawater corrosion tus nqi (mm / xyoo) | 0.02–0.10 | 0.01–0.05 | <0.001 |
| Biofouling kuj | Zoo heev | Zoo heev | Tsis zoo (yuav tsum tau txheej) |
| Chloride pitting | Tsis muaj | Tsis muaj | Tsis muaj |
| Crevice corrosion txaus ntshai | Tsawg | Tsawg | Nruab nrab (xav tau kev saib xyuas) |
| Tus nqi ntawm cov khoom siv txheeb ze | 1.0x | 1.5–1.6x | 5–8x |
Yam khoom twg muaj qhov zoo tshaj plaws seawater corrosion kuj?
Titanium Qib 2 yog kev tiv thaiv zoo. C71500 yog superior. C70600 zoo heev tab sis tsis tiv thaiv kab mob.
| Seawater mob | C70600 | C71500 | Titanium G2 |
|---|---|---|---|
| huv, 2.0m/s | Zoo heev | Zoo heev | Overkill |
| Polluted (sulfides) | Txo lub neej | Zoo | Zoo heev |
| Ammonia >2ppm ua | Kev tawg | Txais tau | Zoo heev |
| High velocity >3.5 m/s | Erodes | Kev yaig me me | Tsis muaj teebmeem |
| Dej hiav txwv | Pitting txaus ntshai | Kev pheej hmoo tsawg | Tsis muaj teebmeem |
| Crevices (nruj) | Me me pitting | Me me pitting | Yuav crevice corrode |
| Temperature >200 degree | Zoo | Zoo | Zoo heev |
Cov ntaub ntawv ntiaj teb tiag:
C70600: 20-30 xyoo nyob rau hauv dej hiav txwv huv, 10-15 xyoo nyob rau hauv paug
C71500: 30-40 xyoo nyob rau hauv huv, 20-25 xyoo nyob rau hauv paug
Titanium G2: 50+ xyoo nyob rau hauv tej dej hiav txwv (yog hais tias crevice tsim kom zoo)
Yuav ua li cas thermal conductivity cuam tshuam qhov kub exchanger sizing?
C70600 hloov cua sov 1.5x sai dua C71500 thiab 2.8x sai dua titanium.
Rau tib lub luag haujlwm thaum tshav kub kub, cov khoom siv tube cuam tshuam txog pes tsawg lub raj koj xav tau.
| Khoom siv | kwv tij tubes xav tau (tib lub tshav kub ua haujlwm) | txheeb ze lub plhaub loj |
|---|---|---|
| C70600 | 1.0x (lub hauv paus) | 1.0x |
| C71500 | 1.55x | 1.2x |
| Titanium G2 | 2.80x | 1.5x |
Piv txwv: Lub tshav kub exchanger tsim rau C70600 yuav tsum tau 1,000 raj. Hloov mus rau titanium yuav tsum muaj 2,800 lub raj rau tib lub tshav kub hloov pauv - lossis lub plhaub loj dua.
Qhov no txhais li cas: Titanium yog tsis tshua muaj siv rau cov tshav kub hloov chaw tshwj tsis yog tias corrosion quab yuam nws. Rau cov ntawv thov kub kub, C70600 lossis C71500 yog qhov kev xaiv zoo dua.
20 xyoo tag nrho cov nqi sib piv yog dab tsi?
C70600 yeej hauv dej hiav txwv huv. Titanium yeej nyob rau hauv txhoj puab heev seawater. C71500 yog nruab nrab hauv av.
Kev xav: 19mm OD x 1.24mm phab ntsa, 20 xyoo kev ua haujlwm, tsis muaj qhov ua tsis tiav loj.
| Tus nqi tsim nyog | C70600 | C71500 | Titanium G2 |
|---|---|---|---|
| Tube nqi (ib meter) | $1.00 | $1.55 | $6.00 |
| Cia siab rau lub neej ( dej hiav txwv huv ) | 25 xyoo | 35 xyoo | 50+ xyoo |
| Cia siab rau lub neej (kwv yees dej hiav txwv) | 12 xyoo | 22 xyoo | 50+ xyoo |
| 20 xyoo tus nqi (huv) - ib qho nruab | $1.00 | $1.55 | $6.00 |
| 20 xyoo tus nqi (kev qias neeg) - nrog kev hloov | $2.00 (Hloov ib zaug) | $1.55 (tsis muaj hloov) | $6.00 (tsis hloov) |
| Downtime nqi ib retube | $10,000+ | $0 | $0 |
Yeej los ntawm daim ntawv thov:
Cov dej hiav txwv huv si, tsis tshua muaj kev poob qis → C70600
Pas dej hiav txwv, nyiaj txiag nruab nrab → C71500
Kev txhoj puab heev seawater, xoom tsis ua hauj lwm kam rau ua → Titanium
Kub kub, siab tshaj tawm, ammonia → Titanium los yog C71500
Thaum twg koj yuav tsum tsis txhob titanium txawm tias nws corrosion kuj?
Titanium tsis yog ib qho lus teb zoo tshaj plaws. Peb qhov teeb meem ua rau nws tsis txaus nyiam.
Teeb meem 1 - Biofouling
Titanium tsis tso cov tooj liab ions. Cov kab mob Marine txuas tau dawb. Tsis muaj txheej los yog ntxuav, hlab foul nyob rau hauv 6-12 lub hlis, tua hluav taws kub hloov. C70600 thiab C71500 ib txwm tiv thaiv fouling.
Teeb meem 2 - Crevice corrosion
Titanium crevice corrodes nyob rau hauv dej hiav txwv kub (siab tshaj 80 degree) nyob rau hauv nruj gaskets los yog deposits. C70600 thiab C71500 tsis muaj qhov teeb meem no. Tsim kom zoo tiv thaiv titanium crevice nres, tab sis ntau tus neeg yuav khoom nco qhov no.
Teeb meem 3 - Tus nqi tsim khoom siab heev
Titanium yog qhov nyuaj rau vuam, khoov, thiab nthuav dav. Yuav tsum muaj cov txheej txheem tshwj xeeb, cov hlau muab tub lim, thiab cov neeg ua haujlwm txawj. C70600 fabricates yooj yim nrog cov khoom siv hauv khw.
| Fabrication ua hauj lwm | C70600 | C71500 | Titanium G2 |
|---|---|---|---|
| Vuam | Ib qho yooj yim (TIG, ERCuNi) | Ib qho yooj yim (TIG, ERCuNi) | Nyuaj (xav tau cov ntshiab Ar, tshwj xeeb muab tub lim) |
| Khoov | Yooj yim (mandrel bender) | Nruab nrab | nyuaj (caij nplooj ntoos hlav, tawg) |
| Expanding rau hauv daim ntawv raj | Yooj yim | Nruab nrab | Cov cuab yeej tshwj xeeb xav tau |
| Txiav | Tube cutter los yog bandsaw | Tube cutter los yog bandsaw | Abrasive log nkaus xwb |
| Cov khoom siv khoom xav tau | Txuj | Txuj | Tshwj xeeb |
Qhov twg alloy ua cov haujlwm tiag tiag xaiv?
Cov ntaub ntawv tiag tiag los ntawm 50 seawater heat exchanger installation.
| Kev lag luam | Feem ntau xaiv alloy | Qhov thib ob xaiv | Titanium siv? |
|---|---|---|---|
| Kev lag luam shipping | C70600 (85%) | C71500 (15%) | Tsis tshua muaj |
| Naval nkoj | C71500 (60%) | C70600 (30%) | 10% |
| Ntug hiav txwv fais fab nroj tsuag | C70600 (70%) | C71500 (20%) | 10% |
| Offshore roj & roj | C71500 (50%) | Titanium (30%) | 20% |
| Desalination | C70600 (40%) | Titanium (40%) | 20% |
| Cov nroj tsuag tshuaj (seawater txias) | C71500 (50%) | Titanium (30%) | 20% |
Txoj Kev: Kev siv titanium loj hlob nyob rau hauv siab - daim ntawv thov tus nqi uas tus nqi poob qis heev (offshore platforms, nuclear fais fab nroj tsuag). Rau feem ntau kev lag luam marine thiab fais fab kev siv, C70600 tseem yog tus qauv.
FAQ
Dab tsi yog qhov kev xaiv pheej yig tshaj rau cov kav dej hiav txwv?
C70600 muaj tus nqi qis tshaj ua ntej. Hauv cov dej hiav txwv huv nrog dej kom zoo, nws kuj yog tus nqi qis tshaj 20 xyoo. Tsuas yog hloov kho mus rau C71500 lossis titanium yog tias cov dej tsis zoo los yog qhov ua tsis tau zoo yog qhov ua tsis tau.
Puas yog titanium kav ntev dua C71500 hauv dej hiav txwv?
Yog, ntev dua. Titanium yog zoo nyob rau hauv dej hiav txwv (50+ xyoo). C71500 kav 30-40 xyoo nyob rau hauv dej hiav txwv huv, 20-25 xyoo nyob rau hauv paug. Txawm li cas los xij, titanium tubes foul nrog marine kev loj hlob thiab xav tau kev tu lossis txheej.
Kuv puas tuaj yeem sib xyaw titanium raj nrog C70600 raj ntawv?
Tsis yog. Titanium yog qhov muaj txiaj ntsig ntau dua li C70600. Nyob rau hauv dej hiav txwv, qhov no tsim muaj zog galvanic cell uas corrodes lub raj ntawv sai heev. Siv daim ntawv titanium raj nrog titanium raj, los yog siv ib qho kev hloov pauv hloov.
Cov alloy twg yog qhov yooj yim tshaj los kho hauv thaj teb?
C70600 yog qhov yooj yim tshaj plaws. Weld nrog ERCuNi muab tub lim siv cov khoom siv TIG txheem. C71500 zoo ib yam tab sis xav tau kev saib xyuas ntau dua. Kev kho titanium teb yog qhov nyuaj - cov neeg ua haujlwm feem ntau hloov tag nrho cov pob es tsis txhob kho.
Puas yog C71500 tsim nyog tus nqi ntxiv tshaj C70600?
Rau cov dej huv huv nrog kev tswj xyuas zoo: tsis yog, lo nrog C70600. Rau cov dej hiav txwv muaj kuab paug, muaj kev pheej hmoo ammonia, lossis nrawm dua 3.0 m / s: yog, tus nqi ntxiv them rov qab los ntawm lub neej ntev dua.
Vim li cas titanium muaj qis thermal conductivity tshaj tooj liab alloys?
Titanium yog cov hlau hloov pauv nrog cov qauv hluav taws xob sib txawv. Copper alloys inherently ua cua sov zoo dua. Qhov no yog vim li cas titanium yog siv rau corrosion kuj, tsis yog rau tshav kub hloov efficiency.
Yuav ua li cas txog C71640 los yog lwm yam tooj liab nickel variants?
C71640 (Cu-Ni-Fe-Mn) muaj kev yaig zoo dua li C70600 tab sis zoo li corrosion kuj. Nws tsis tshua muaj thiab kim dua. Rau cov neeg yuav khoom feem ntau, C70600 thiab C71500 npog 95% ntawm kev siv dej hiav txwv.
Yuav ua li cas xaiv ntawm C70600 thiab titanium rau cov nroj tsuag desalination?
Rau brine rhaub (kub kub, siab tshaj tawm): titanium nyiam dua. Rau cov evaporators thiab lwm yam tsis muaj qhov kub thiab txias: C70600 yog qhov ntau thiab siv tau zoo. Ntau cov nroj tsuag desalination siv ob qho tib si - titanium hauv cov ntu kub, C70600 hauv cov ntu txias.
Puas yog titanium xav tau kev tiv thaiv cathodic hauv dej hiav txwv?
Tsis yog. Titanium yog passive thiab tsis corrode. Txawm li cas los xij, yog tias titanium txuas nrog hlau (tsawg dua noble), cov hlau yuav corrode sai heev. Cais titanium los ntawm cov hlau los yog tiv thaiv cov hlau nrog anodes.
Cov ntaub ntawv ntawm ib sab
| C70600 | C71500 | Titanium G2 | |
|---|---|---|---|
| Zoo tshaj rau | Cov dej hiav txwv huv huv, nqi rhiab | Polluted seawater, ammonia txaus ntshai | Cov dej hiav txwv txhoj puab heev, xoom tsis ua hauj lwm kam rau ua |
| Zam thaum | Ammonia >2 ppm, velocity >3.5 m/s | Kev siv nyiaj nruj, siab kub ua haujlwm | Biofouling kev txhawj xeeb, pob nyiaj nruj |
| 20 xyoo tus nqi (huv) | $ | $$ | $$$$$ |
| 20 xyoo tus nqi (tsis zoo) | $$ (nrog retube) | $$ | $$$$$ |
| Fabrication yooj yim | Yooj yim | Nruab nrab | Nyuaj |
| Biofouling kuj | Zoo heev | Zoo heev | pluag |
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, BS 2871, EN 12451 | Thaum tshav kub kub exchangers, condensers, marine piping, fais fab nroj tsuag |
| Tube (seamless) | C12200, C70600, C71500 | ASTM B88, ASTM B466, EN 1057 | Cov kab dej, roj kab, hydraulic systems, shipbuilding |
| Qws / bar | C11000, C36000, C46400, C63000 | ASTM B16, ASTM B124, EN 12163 | Valve stems, twj tso kua mis shafts, marine fittings, zog |
| Hlau | C11000, C16200, C19400 | ASTM B1, ASTM B3, EN 13601 | Hluav taws xob conductors, vuam muab tub lim, tiv tauj |
| Sawb / coil | C11000, C19400, C26000, C26800, C52100 | ASTM B 152, ASTM B465, EN 13599 | Transformer windings, davhlau ya nyob twg connectors, springs, shielding |
| Phaj / ntawv | C10100, C11000, C12200, C70600, C71500, C46400 | ASTM B152, ASTM B171, ASME SB171 | Tube nplooj ntawv, baffle daim hlau, tshav kub exchanger daim hlau, kho hull |
