C61400 Copper -Aluminium Bronze yog dab tsi
C61400, feem ntau piav qhia yooj yim li txhuas bronze D, yog ib qho tooj liab alloy ua nyob ib ncig ntawm tooj liab -aluminium puag nrog li 7% txhuas thiab ib qho hlau ntxiv ntawm kwv yees li 2%. Cov txhuas ua ib qho nyuaj, tenacious oxide zaj duab xis rau ntawm qhov chaw uas yog lub hauv paus ntawm cov alloy lub koob npe nrov nyob rau hauv seawater, thaum hlau refines lub grain qauv thiab nce lub zog. Qhov tshwm sim yog cov khoom siv uas coj tus cwj pwm zoo li lub siab - lub zog engineering alloy ntau dua li cov pa tin bronze.
Cov qib yog them los ntawm ASTM B171 rau tooj liab alloy phaj thiab daim ntawv rau cov hlab ntsha siab thiab ASTM B171M rau cov metric version, nrog cov khoom raj rau condenser thiab kub exchanger kev pab cuam los ntawm tib tsev neeg ntawm specifications. Cam khwb cia cov ntaub ntawv ntawm ib tug zoo xws li txhuas bronze muaj pes tsawg leeg yog them los ntawm ASTM B148, tab sis cov khoom wrought tham ntawm no muaj finer qauv thiab ntau dua ductility tshaj cov cam khwb cia sib npaug.
Tshuaj muaj pes tsawg leeg
Cov muaj pes tsawg leeg hauv qab no yog cov feem ntau teev rau wrought C61400. Cov khoom seem ntawm cov khoom siv yog tooj liab nrog cov khoom seem me me khaws cia hauv cov kev txwv tshwj xeeb.
| Element | Ntau yam | Muaj nuj nqi |
|---|---|---|
| Tooj | 88.0-92.5% | Base hlau |
| Aluminium | 6.0-8.0% | Lub zog, tawv nto zaj duab xis, corrosion kuj |
| Hlau | 1.5-3.5% | Grain refinement thiab zog nce |
| Manganese | 1.0% siab tshaj | Deoxidation thiab ntxiv dag zog |
| Nickel | 1.0% siab tshaj | Residual txwv, txhim kho toughness ntawm qib qis |
| Coj | 0.01% siab tshaj | Khaws txhob txwm tshaj tawm qis rau kev ua haujlwm kub |
Lub nruj txhuas txwv tsis xwm yeem. Aluminium bronzes yog rhiab heev rau kub shortness, thiab txawm me me txhuas cov ntsiab lus impair kub dov thiab forging, yog li cov specification khaws cov residual qib qis heev.
Physical thiab Mechanical Properties
Cov lus hauv qab no qhia txog cov khoom uas feem ntau thov hauv cov lus nug. Tus nqi yog ib txwm rau cov khoom wrought; qhov tsawg kawg nkaus cov nuj nqis uas yuav tsum tau ua kom tau raws li qhov kev xeem yog cov uas tau teev nyob rau hauv cov specifications siv tau rau tus txiav txim temper.
| Khoom | Yam nqi |
|---|---|
| Qhov ntom | Txog 7.89 g / cm³ |
| Melting ntau | Kwv yees li 1040-1060 ° C |
| Tensile zog | Kwv yees li ntawm 480-550 MPa nyob ntawm qhov kub thiab txias |
| Yield zog | Kwv yees li 200-250 MPa nyob ntawm qhov kub thiab txias |
| Elongation | Kwv yees li 25-35% |
| Modulus ntawm elasticity | Txog 110-120 GPa |
| Hluav taws xob conductivity | Txog 14% IACS |
| Thermal conductivity | Txog 40 W / mK |
Lub zog hauv kev pabcuam nce ntxiv los ntawm kev ua haujlwm nyuaj: txias dov lossis kos C61400 txhim kho cov txiaj ntsig zoo tshaj tus nqi annealed, uas muaj txiaj ntsig zoo rau cov khoom xws li shafts thiab hnav qhov chaw uas tsis tuaj yeem kho cua sov.
Corrosion thiab hnav kev ua haujlwm
Cov alloy lub koob npe nrov nyob ntawm nws tus cwj pwm hauv dej hiav txwv. Kev tiv thaiv aluminium oxide zaj duab xis hloov kho sai sai thaum puas tsuaj, muab kev tiv thaiv zoo rau kev xeb dav dav, kev cuam tshuam thiab yaig corrosion ntawm cov dej ntws siab dua, thiab cavitation hauv cov twj tso kua mis thiab cov kev pabcuam valve. Nws kuj tiv thaiv kev ntxhov siab corrosion cracking thiab qhia tau hais tias muaj zog qaug zog zoo nyob rau hauv marine ib puag ncig.
Ob qhov txwv yuav tsum nkag siab. Cov hlau tsis yog tsim rau kev txo qis los yog hnyav heev sulphide- dej qias neeg, qhov chaw tiv thaiv zaj duab xis tsis ruaj khov, thiab nws yuav tsum tsis txhob raug ammonia lossis ammonium compounds, uas tawm tsam tooj liab feem ntau. Nyob rau hauv qhov dej hiav txwv thiab dej brackish cov khoom siv tsis tu ncua muab lub neej ntev heev. Qhov twg cov txheej txheem kwj deg muaj kuab paug los yog chemistry hloov pauv, daim ntawv thov yuav tsum raug tshuaj xyuas ntawm rooj plaub-los ntawm- rooj plaub.
Fabrication, Vuam thiab Kev kho cua sov
C61400 tau yooj yim ua haujlwm kub thiab, nyob rau hauv qhov mob annealed, txias tsim kom txo qis nrog inter-pass annealing. Machining yog piv rau qhov nruab nrab - lub zog bronze thiab hu rau cov cuab yeej ntse, zoo rake. Ob lub ntsiab lus fabrication tsim nyog mloog:
Vuam. Cov hlau yog welded los ntawm cov pa roj tungsten arc thiab roj hlau arc txheej txheem nrog kev sib txuam lossis tsim cov tooj liab alloy muab tub lim, siv cov hluav taws xob ncaj qha tam sim no tsis zoo rau TIG ua haujlwm. Preheating feem ntau tsis tas yuav tsum tau rau cov ntu nyias, thiab inter-dhau kub yuav tsum tau tswj kom tsis txhob muaj qoob loo ntau dhau. Cov pob qij txha yuav tsum tau muab ntxuav kom huv si ua ntej vuam thiab cov cua sov- thaj chaw cuam tshuam raug ntxuav tom qab vuam los kho cov oxide zaj duab xis.
Kev kho cua sov. Kev daws annealing nrog kev tswj kom txias yog siv qhov siab tshaj plaws softness thiab ductility yuav tsum tau. Kev ntxhov siab yog siv tom qab hnyav ua haujlwm txias, tab sis cov hlau yuav tsum tsis txhob tuav hauv qhov kub thiab txias uas txhawb nqa embrittlement thaum lub caij txias.
Tej kev siv
Twj lub cev, impellers, hnav rings thiab casings; valve lub cev, rooj zaum, stems thiab trim; condenser thiab kub exchanger raj; seawater kav, flanges thiab fittings; kiv cua shafts, rudder Cheebtsam thiab lwm yam marine hardware; thiab welded qauv hauv desalination thiab offshore kev pab cuam. Kev sib xyaw ua ke ntawm lub zog, dej hiav txwv tsis kam thiab weldability yog qhov ua rau C61400 tus qauv xaiv qhov twg lub luag haujlwm lub voj voog yog corrosive thiab mechanically xav tau.
Hauv daim ntawv txais nyiaj, cov khoom yuav tsum tau kuaj xyuas cov tshuaj muaj pes tsawg leeg tiv thaiv qhov tshwj xeeb, rau cov khoom siv kho tshuab nyob rau hauv kev txiav txim siab, rau qhov ntev ntev thiab rau saum npoo. Welded fabrications yuav tsum tau soj ntsuam kom muaj kev ywj pheej los ntawm porosity thiab kom kho kom raug cov yeeb yaj kiab tiv thaiv ntawm qhov ua tiav.
FAQ
Q: C61400 yog dab tsi?
Nws yog tooj liab wrought -aluminium bronze nrog 88.0-92.5% tooj liab, 6.0-8.0% aluminium thiab 1.5-3.5% hlau, nrog tsawg seem txwv ntawm manganese, nickel thiab lead.
Q: Vim li cas C61400 siv hauv dej hiav txwv?
Nws cov ntsiab lus txhuas ua ib qho nyuaj, nws tus kheej - kho oxide zaj duab xis, muab kev tiv thaiv zoo heev rau kev xeb, kev tawm tsam thiab cavitation hauv dej hiav txwv thiab dej khov.
Q: C61400 muaj zog npaum li cas piv nrog tooj dag?
Nws txhim kho qhov muaj txiaj ntsig zoo dua qhov muaj zog dua li cov tooj dag dawb, nrog lub zog tensile ib txwm nyob hauv thaj tsam ntawm 480-550 MPa thiab lub zog tawm los ntawm 200-250 MPa hauv cov txheej txheem annealed thiab maj mam ua haujlwm.
Q: C61400 puas tuaj yeem welded?
Yog lawm. Gas tungsten arc thiab gas hlau arc vuam yog ob qho tib si siv nrog cov hlau sib xyaw ua ke, thiab cov cua sov- yuav tsum tau ntxuav tom qab ntawd kom cov yeeb yaj kiab oxide tuaj yeem hloov kho.
Q: Puas yog C61400 tib yam li cam khwb cia txhuas bronze?
Tsis yog. Cov qib wrought tau tham ntawm no muaj cov qauv zoo dua, cov qauv zoo sib xws thiab cov ductility ntau dua li cov cam khwb cia txhuas bronze rau ASTM B148, thiab ob qho tau teev tseg.
Q: C61400 yuav tsum zam cov kev pabcuam dab tsi?
Ua kom txo qis cov xwm txheej, hnyav heev sulphide- dej qias neeg thiab ammonia-cov xov xwm kabmob, txhua yam uas ua rau tsis muaj zog tiv thaiv zaj duab xis lossis tawm tsam tooj liab ncaj qha.
