C44300 Admiralty Brass Tube yog dab tsi
C44300 yog arsenic-inhibited admiralty tooj dag, yog ib qho ntawm cov khoom qub tshaj plaws thiab siv dav tshaj plaws rau condenser thiab cua sov- cov raj xa dej. Nws yog tooj liab-zinc alloy nrog roughly 28% zinc, txog 1% tin thiab ib qho me me arsenic ntxiv, muab los ua seamless raj hauv qab ASME B111 / SB111 thiab ASTM B111.
Lub npe qhuas qhuas tooj dag yog los ntawm kev pabcuam tub rog uas tsim cov hlau: ib lub raj uas yuav muaj sia nyob txuas ntxiv mus rau cov dej hiav txwv ntws tsis muaj qhov dezincification sai uas 70/30 tooj dag raug kev txom nyem. Tin muab kev tiv thaiv rau impingement nres thiab yaig-corrosion, thaum arsenic - tam sim no tsuas yog ob peb puas feem ntawm ib lab - hloov cov electrochemical tus cwj pwm ntawm cov hlau kom nws passivates es tsis poob zinc. C44400 thiab C44500 ua tiav tib yam inhibition nrog antimony thiab phosphorus feem.
Tshuaj muaj pes tsawg leeg
Cov muaj pes tsawg leeg ntawm C44300 yog tswj los ntawm cov khoom hauv qab no. Tus nqi yog feem pua los ntawm pawg.
| Element | C44300 | Muaj nuj nqi |
|---|---|---|
| Copper (Cu) | 71.0–77.0 | matrix |
| Tin (Sn) | 0.9–1.2 | tsis kam rau impingement thiab yaig -corrosion |
| Arsenic (As) | 0.02–0.06 | inhibitor tiv thaiv dezincification |
| Lead (Pb) | 0.07 max | residual, khaws cia qis |
| Hlau (Fe) | 0.06 max | residual, tswj |
| Zinc (Zn) | seem | matrix sib npaug |
| Lwm cov ntsiab lus, tag nrho | 0.50 max | tramp element tswj |
Qhov nqaim arsenic ntau yam yog qhov yuav tsum tau ua, tsis yog kev tsim khoom yooj yim: tsawg dhau ntawm cov hlau qhib rau dezincification thiab ntau dhau ua rau kub ua haujlwm. Cov neeg yuav khoom yuav tsum cia siab tias daim ntawv pov thawj zeb yuav tshaj tawm arsenic meej.
Mechanical Properties thiab Specification Requirements
Cov khoom txheem txheej txheem tsawg kawg nkaus tensile lub zog, elongation thiab, rau annealed raj, ib tug siab tshaj plaws grain loj rau txhua alloy thiab temper. Cov kev txwv siv tau yog li ntawd nyob ntawm qhov kev xav tau, thiab qhov kev lees paub yog cov qauv tensile txiav los ntawm cov raj tiav ua ke nrog cov nplej - qhov ntsuas qhov loj ntawm cov khoom siv annealed.
Annealed temper:tus qauv xwm txheej rau lub raj uas yuav yog cov menyuam- nthuav dav rau hauv cov ntawv raj lossis khoov rau U-zoo li. Ductility yog siab thiab grain loj yog tswj kom paub meej tias ua tiav recrystallisation.
Nyuaj-tawm siab:lub zog tensile siab dua nrog qis elongation, siv rau kev khiav ncaj nraim thiab qhov chaw tiv thaiv kev co yog qhov tseem ceeb tshaj li kev tsim.
Thermal conductivity:kwv yees li 110 W / (m·K) ntawm chav tsev kub, uas yog qis dua cov tooj liab ntshiab tab sis txaus rau lub luag hauj lwm condenser thiab yog ib qho ntawm cov laj thawj uas cov hlau sib tw nrog lwm txoj hauv kev.
Siab muaj peev xwm:lub raj yog siv hauv plhaub-thiab- tube exchangers qhov twg cov dej txias nyob rau hauv siab; phab ntsa thickness yog xaiv los ntawm kev tsim siab ntxiv rau kev tiv thaiv corrosion dhau lub neej tsim.
Txhua lub raj feem ntau raug tshuaj xyuas tas li ntawm nws qhov ntev los ntawm eddy tam sim no tom qab qhov kawg anneal, thiab kev ntsuas hydrostatic los yog pneumatic siab yog ua thaum daim ntawv xaj yuav hu rau nws.
Daim ntawv thov
Nto condenser:chav condensers nyob rau hauv lub hwj chim tsim, marine propulsion thiab cov txheej txheem cov nroj tsuag ua hauj lwm nyob rau hauv huv si los yog me ntsis polluted dej txias.
Plhaub-thiab-tube heat exchangers:coolers, heaters thiab interchangers nyob qhov twg ib sab yog dej thiab cov alloy yuav tsum matched rau cov dej tsis nruj heev.
HVAC thiab tub yees:condensers, evaporators thiab txias coils nyob rau hauv ntim thiab industrial tub yees.
Marine systems:lubricating roj coolers, tsho dej txias, cua txias thiab dej hiav txwv cua sov-hloov Cheebtsam ntawm cov hlab ntsha.
Lub zog thiab txheej txheem txias:cua txias yees, chav generators thiab auxiliary coolers qhov twg cov dej chemistry nyob rau hauv lub alloy tus tsim ntau yam.
Desalination thiab cheeb tsam cua txias:condenser thiab txias seem nyob rau hauv cov nroj tsuag qhov twg dej chemistry thiab tshaj tawm haum ib tug inhibited tooj dag es ib tug tooj liab -nickel alloy.
Vim li cas Seamless Tube tseem ceeb hauv txoj haujlwm no
Tshem tawm cov vuam seam tshem tawm qhov txuas tsis muaj zog tshaj plaws hauv lub tshav kub-hloov phab ntsa. Lub welded raj muaj ib tug nqaim band ntawm cam khwb cia, directionally solidified hlau thiab lub tshav kub- cuam tshuam cheeb tsam ib sab ntawm nws; nyob rau hauv ib qho tshuaj chloride- bearing dej cov cheeb tsam no txawv nyob rau hauv muaj pes tsawg leeg, residual stress thiab corrosion muaj peev xwm los ntawm niam txiv hlau, thiab lawv yog qhov chaw pitting thiab cracking pib. Lub raj seamless yog homogeneous nyob ib ncig ntawm nws qhov ncig, uas ua rau muaj kev coj cwj pwm zoo nyob rau hauv cov menyuam yaus nthuav dav, thermal cycling thiab vibration, thiab nws ua rau eddy -tam sim no lub teeb liab txhais tau yooj yim dua vim tias tsis muaj kev ncua ntev los npog qhov tsis xws luag.
Rau tib yam vim li cas tag nrho txoj kev tsim khoom yog coj los ntawm cov qauv zoo ib yam: casting, kub extrusion los yog tho, txias kos nrog inter-annealing, thiab qhov kawg anneal rau lub siab txiav txim. Lub raj uas tawm ntawm lub zeb yuav tsum yog dimensionally concentric, vim phab ntsa eccentricity thins ib sab ntawm phab ntsa thaum expansion thiab shortens lub neej ntawm kev sib koom tes.
Xaiv, Txhim kho thiab soj ntsuam cov ntsiab lus
Muab cov hlau nplaum rau hauv dej.C44300 yog txoj cai rau cov dej hiav txwv huv thiab me ntsis qias neeg ntawm qhov nrawm nrawm. Cov kuab paug hnyav heev, sulphide-cov kabmob lossis siab- dej nrawm hu rau txhuas tooj dag xws li C68700 lossis rau tooj liab-nickel alloy.
Nyob rau hauv tus qauv tsim tshaj tawm.Tsawg tshaj tawm tso cai tso nyiaj thiab qis dua - deposit corrosion; Tshaj tshaj tawm tshem tawm cov yeeb yaj kiab tiv thaiv thiab ua rau muaj kev cuam tshuam.
Expand annealed tube nkaus xwb,thiab tswj kev nthuav dav kom cov phab ntsa tsis dhau -thinned ntawm ligament.
Kev ntxhov siab -relieve U- khoovtiv thaiv kev ntxhov siab-corrosion tawg nyob rau hauv ammoniacal los yog chloride ib puag ncig.
Tshem tawm cov kab mob hlau.Carbon steel hais rau ntawm lub raj nto ua raws li cathodes thiab pib hauv zos pitting; siv tsis yog- cov cuab yeej ferrous thiab huv cia.
Txheeb xyuas cov ntaub ntawv:zeb xeem daim ntawv pov thawj npog muaj pes tsawg leeg thiab txhua yam khoom, eddy- daim ntawv qhia tam sim no, cov ntaub ntawv seem rau sab nraud txoj kab uas hla, phab ntsa thickness thiab ovality, thiab grain loj rau lub annealed temper.
FAQ
Q: Cov arsenic hauv C44300 ua li cas?
Nws yog ib qho decincification inhibitor. Ntxiv ntawm 0.02 mus rau 0.06%, nws hloov cov zaj duab xis saum npoo kom cov zinc tsis xaiv tau tshem tawm, uas yog qhov tso cai rau tus neeg saib xyuas tooj dag kom muaj sia nyob hauv dej hiav txwv kev pabcuam uas yuav rhuav tshem tsis muaj 70/30 tooj dag.
Q: Qhov txawv ntawm C44300, C44400 thiab C44500 yog dab tsi?
Tag nrho peb yog admiralty brasses nrog tib tooj liab, tin thiab zinc puag, inhibited nrog arsenic, antimony thiab phosphorus feem. Qhov xav tau inhibitor nyob ntawm tus neeg yuav khoom cov dej chemistry specification.
Q: Vim li cas seamless raj tau teev rau condensers?
Vim tias qhov vuam thiab cua sov- cuam tshuam thaj tsam ntawm lub welded raj corrode thiab tawg txawv ntawm niam txiv hlau. Seamless raj muaj cov phab ntsa zoo ib puag ncig, muab kev nthuav dav thiab khoov tus cwj pwm thiab kev huv huv eddy- kev tshuaj xyuas tam sim no.
Q: Dab tsi temper yuav tsum tau txiav txim?
Annealed tube rau cov menyuam nthuav dav rau hauv cov ntawv raj lossis rau U-bending, thiab nyuaj-txoj raj uas yuav tsum tau khiav ncaj nraim. Tus npau taws txiav txim siab tensile, elongation thiab grain - qhov txwv loj uas siv rau kev xa khoom.
Q: C44300 lub raj puas tuaj yeem hloov ncaj qha nrog tooj liab -nickel raj?
Tsis yog tsis kuaj xyuas tus tsim. Copper-nickel muaj qhov sib txawv thermal conductivity, lub zog thiab nthuav cov yam ntxwv, thiab cov ntawv raj, cov txheej txheem nthuav dav thiab dej- lub thawv tiv thaiv corrosion kuj yuav tsum tau tshuaj xyuas ua ntej hloov.
Q: Yuav ua li cas lub raj ntim yuav tsum tau ua thaum lub sij hawm retube?
Khaws lub bore kom huv si thiab qhuav, tsis txhob carbon steel tiv tauj, nthuav mus rau lub torque los yog expansion npaum li cas, kev ntxhov siab -relieve U- khoov qhov twg yuav tsum tau, thiab yaug lub pob ua ntej xa rov qab mus rau lub exchanger.
