ASTM B111 C70600 Cov Lus Qhiatshuaj muaj pes tsawg leeg thiab cov khoom tseem ceeb
Tshuaj muaj pes tsawg leeg (ASTM B111 txuj)
| Element | Feem pua |
|---|---|
| Copper (Cu) | 88.0 – 90.0% |
| Nickel (Ni) | 9.0 – 11.0% |
| Hlau (Fe) | 1.0 – 1.8% |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.0% |
Hlau yog qhov tseem ceeb: Hauv qab 1.0% hlau,seawater corrosion kujpoob qis heev.
Mechanical zog
Tensile zog: min 310 MPa
Tawm lub zog: min 105 MPa
Elongation: min 30%
Thermal conductivity: 45 W / (m·K)
Puas yog C70600 zoo rau kev pabcuam dej hiav txwv?
Yog lawm. ASTM B111 C70600 tooj liab nickel raj yog cov khoom siv dej hiav txwv txheem.
Yog vim li cas:
Ib txwm tsim cov txheej txheem oxide tiv thaiv hauv dej ntsev
Resistant pitting, crevice corrosion, thiab kev nyuaj siab corrosion cracking
Tiv thaiv marine biofouling (tsawg tu, kho qis)
Tej kev siv dej hiav txwv:
Shipbuilding (txoj kab txias, kab hluav taws)
Desalination nroj tsuag (brine rhaub, evaporators)
Coastal fais fab nroj tsuag condenser
C70600 vs C71500 - koj yuav tsum xaiv qhov twg?
| Kev sib piv | C70600 (90/10) | C71500 (70/30) |
|---|---|---|
| Nickel cov ntsiab lus | 9–11% | 29–33% |
| Seawater tsis kam | Zoo heev | Superior |
| Ammonia tsis kam | Nruab nrab | Zoo heev |
| Thermal conductivity | Siab (45 W / m·K) | qis (~ 29 W / m·K) |
| Nqi | qis | Siab dua |
| Zoo tshaj rau | Cov dej hiav txwv huv si, nruab nrab tshaj tawm | Cov dej hiav txwv muaj kuab paug, siab tshaj tawm, ammonia |
Txoj cai ntawm tus ntiv tes xoo: SivC70600rau feem ntau daim ntawv thov marine/coastal. Hloov mus rauC71500yog hais tias muaj ammonia los yog siab tshaj tawm tam sim no.
C70600 tshav kub exchanger raj - dab tsi yog qhov tsis ua hauj lwm txaus ntshai?
Txawm zooC70600 tooj liab nickel rajtuaj yeem ua tsis tiav. Nov yog 5 qhov txaus ntshai tiag tiag:
| Txaus ntshai | Ua rau | Kev daws |
|---|---|---|
| Kev txhim kho corrosion | Kev nrawm> 3.5 m / s, xuab zeb lossis npuas | Ua kom ceev 1.0-3.0 m / s |
| Kev nyuaj siab corrosion cracking | Ammonia> 2 ppm | Tswj ammonia; hloov mus rau C71500 yog tias xav tau |
| Tsawg hlau tsis ua hauj lwm | Fe <1.0% (tus neeg siv khoom sib txawv) | Xav tau daim ntawv pov thawj zeb; tsis kam yog Fe <1.0% |
| Weld tsis zoo | Tsis yog muab tub lim hlau | AWS A5.7 ERCuNi |
| Sulfide nres | Cov dej qias neeg tsis zoo nrog H₂S | Dej tsis tu ncua; zam ntev stagnation |
ASTM B111 C70600 raj tsim - seamless lossis welded?
Txheem rau cov cua sov exchangers: seamless yuav tsum tau.Welded tubes feem ntau tsis tau txais rau qhov chaw condenser lossis cov kev pabcuam kub hloov pauv raws li ASTM B111.
Cov kauj ruam ntawm kev tsim khoom:
Kub extrusion ntawm billet
Kev kos duab txias rau precision OD thiab phab ntsa thickness
Annealing ntawm 650-750 degree
Kev ntsuas hydrostatic lossis eddy tam sim no
Thaum kawg ntxuav thiab ntim
FAQ
Dab tsi yog qhov txawv ntawm C70600 thiab 90/10 tooj liab nickel?
Tsis muaj qhov sib txawv - C70600 yog UNS tus lej rau 90/10 tooj liab npib tsib xee. "90/10" yog hais txog 90% tooj liab thiab 10% npib tsib xee. C70600 yog tus qauv tsim raws li ASTM B111.
ASTM B111 C70600 raj siv tau rau siab - dej kub?
Yog, mus txog 315℃tsis tu ncua. Tshaj 315 degree, nplai tsim nrawm. Rau qhov kub siab dua, xav txog nickel-raws li alloys.
Dab tsi welding pas nrig kuv yuav tsum siv rau C70600 tooj liab nickel yeeb nkab?
AWS A5.7 ERCuNi ERCuNi phim 90/10 muaj pes tsawg leeg. Tsis txhob siv cov ntshiab tooj liab muab tub lim - nws yuav ua rau galvanic corrosion ntawm lub vuam.
Yuav kuaj seb lub raj puas yog ASTM B111 C70600?
PMI (Positive Material Identification) nrog rab phom XRF. Ib qho 10-thib ob scan pom tias npib tsib xee (9-11%) thiab hlau (1.0-1.8%). Fake tubes feem ntau muaj nickel qis dua 8% lossis hlau qis dua 0.8%.
Dab tsi yog tus qauv xa khoom rau C70600 condenser raj?
Annealed (O60 temper). Annealed hlab yog mos txaus rau dov rau hauv cov ntawv raj thiab khoov. Rau U- cov leeg khoov, kev ntxhov siab-txoj kev kho kuj muaj.
Puas yog C70600 tiv thaiv crevice corrosion hauv dej hiav txwv?
Yog, nws muaj qhov zoo crevice corrosion kuj. Txawm li cas los xij, nruj crevices nrog dej hiav txwv stagnation yuav tsum tau zam. Kev tsim gasket tsim nyog thiab kev khiav ceev pab.
Dab tsi yog qhov tsawg kawg nkaus hlau cov ntsiab lus yuav tsum tau rau C70600 seawater service?
1.0% cov ntsiab lus hlau tsawg kawg nkaus. ASTM B111 xav tau hlau ntawm 1.0% thiab 1.8%. Cov hlau qis ncaj qha txo cov kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv cov dej ntws siab.
Puas yog C70600 raj haum rau ammonia txias kev pab?
Tsuas yog tias ammonia concentration qis dua 2 ppm. High ammonia ua rau muaj kev ntxhov siab corrosion tawg. Rau siab -amine lossis siab- cov kev pabcuam ammonia, siv C71500 hloov.
C70600 puas tuaj yeem khoov rau hauv U-puab rau cov khoom siv hluav taws xob?
Yog lawm, C70600 yog ductile heev thiab haum rau U- dabtsi yog khoov. Siv cov kev ntxhov siab-relieved raj rau U- khoov daim ntawv thov kom txo qis caij nplooj ntoos hlav- rov qab. Annealed hlab kuj yog khoov tau tab sis tej zaum yuav muaj kev ntxhov siab ntau dua.
Daim ntawv pov thawj zeb twg kuv yuav tsum thov rau ASTM B111 C70600 raj?
Thov EN 10204 Hom 3.1 lossis 3.2 daim ntawv pov thawj. Daim ntawv pov thawj yuav tsum muaj cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, cov txiaj ntsig kev ntsuas hydrostatic, thiab cov xov tooj cua sov. Nco ntsoov xyuas cov nqi hlau thiab npib tsib xee.
C70600 tooj liab nickel raj nyob rau hauv dej hiav txwv ntev npaum li cas?
Feem ntau 20-30 xyoo nyob rau hauv cov qauv tsim kom zoo. Kev pabcuam lub neej yog nyob ntawm qhov nrawm nrawm, dej chemistry, thiab kev saib xyuas. Ntau lub nkoj nkoj siv C70600 tshaj 25 xyoo kev pabcuam.
Dab tsi ntawm C70600 raj muaj nyob rau hauv ASTM B111?
Sab nraud txoj kab uas hla ntawm 6.35mm mus rau 50.8mm. Phab ntsa thickness ntawm 0.5mm mus rau 3.0mm, thiab ntev mus txog 30 meters. Kev cai qhov ntau thiab tsawg kuj muaj raws li qhov kev thov.
Cov kev sim
Eddy tam sim no xeem (ECT) rau ASTM E243
Hydrostatic xeem mus txog 20 MPa
PMI (XRF) rau kev txheeb xyuas alloy ntawm txhua qhov cua sov
Mechanical Properties Test (tensile, hardness, flattening, expansion)
Microscopic kuaj rau grain qauv
Ntim cov qauv
Yas kawg lub kaus mom ntawm ob qhov kawg kom tiv thaiv kev sib kis
Ib tug neeg polybag wrapping rau txhua lub raj
Ntoo crates lossis steel spools rau export
Cov dej noo-cov ntaub ntawv pov thawj thiab cov khoom desiccant rau kev xa khoom hauv hiav txwv
Sau npe nrog tus lej xov tooj cua sov, qhov loj me, thiab qhov ntau ntawm txhua pob
Cov khoom siv ntau lawm
Extrusion xovxwm (1500T thiab 2500T)
Cov tshuab kos duab txias (10 kab, OD ntau 4mm txog 90mm)
Annealing furnaces (tswj chaw, 650-750 degree)
Straightening thiab txiav kab
U-bending tshuab rau cua sov exchanger raj
Peb cov khoom siv tooj liab
| Yam khoom | Cov alloys | Qhov ntau thiab tsawg |
|---|---|---|
| Tube (seamless) | C10100, C10200, C12200, C70600, C71500, C44300, C68700 | OD 4mm-90mm, WT 0.3mm-5.0mm |
| Tube (seamless) | C12200, C70600, C71500 | OD 10mm-108mm, WT 1.0mm-8.0mm |
| Qws / bar (round, hex, square) | C10100, C10200, C11000, C36000, C46400, C63000 | Dia 3mm-100mm |
| Hlau | C10100, C10200, C11000, C16200, C19400 | Dia 0.1mm-8.0mm |
| Sawb / coil | C10100, C10200, C11000, C19400, C26000, C26800, C52100 | Thk 0.1mm-3.0mm, dav txog 400mm |
| Phaj / ntawv | C10100, C10200, C11000, C12200, C70600, C71500, C46400 | Thk 0.5mm-50mm, dav mus txog 1000mm |
