C12200 Tube nyob rau hauv Automotive thiab cua sov Systems
Radiators, heater cores, oil coolers and air-conditioning condensers tag nrho yog nyob ntawm cov raj tooj liab uas tuaj yeem tsim ua tuab, nyias-cov cores phab ntsa thiab tom qab ntawd koom ua ke hauv cov xau{2}} nruj sib dhos. ASTM B111/B111M npog lub seamless tooj liab thiab tooj liab-alloy condenser raj siv rau cov chav kawm ntawm cov cua sov no- hloov khoom, thiab UNS C12200 yog qib feem ntau xaiv rau tsheb thiab HVAC lub luag haujlwm.
C12200 yog deoxidised nrog 0.015 mus rau 0.040 feem pua phosphorus, uas tshem tawm cov pa seem thiab ua rau cov hlau weldable thiab brazeable. Qhov sib ntxiv no txo cov hluav taws xob conductivity mus rau 70-90 feem pua IACS band, tab sis rau lub tshuab hluav taws xob lossis lub rhaub dej kub uas ua lag luam tsim nyog: cov hlau sib sib zog nqus nqus tau zoo nkauj, tiv taus pitting hauv dej thiab coolant, thiab tswj nws cov softness los ntawm lub cub tawg brazing voj voog.
Kev sib xyaw ua ke thiab cov khoom siv tshuab
| Yam khoom | C12200 xav tau |
|---|---|
| Tooj (Cu), suav nrog nyiaj | 99.90% tsawg kawg nkaus |
| Phosphorus (P) | 0.015 - 0.040 % |
| Tag nrho lwm yam | 0.05% siab tshaj |
| Cov khoom txheem | ASTM B111 / B111M, ASME SB111 |
| European lub npe | Cu-DHP, seamless raj rau EN 12451 |
| Hom tube loj | sab nraud txoj kab uas hla 5 hli mus rau 25 hli, phab ntsa 0.4 hli mus rau 1.5 hli |
| Kub | Tsawg kawg tensile zog | Yam tsawg kawg yield zog | Hom kev siv |
|---|---|---|---|
| Ua tsaug, O60 | 207 MPa (30 ksi) | - | tsim, khoov, raj- daim ntawv nthuav dav |
| Lub teeb kos, H55 | 250 MPa | 205 MPa | radiator thiab condenser raj |
| Lub cev muaj zog, H80 | 310 MPa | 275 MPa rau | siab tswj, ncaj khiav |
Cov ntaub ntawv lub cev zoo rau qib yog qhov ceev ntawm 8.90 g / cm³, melting point ntawm 1083 degree, coefficient ntawm thermal expansion ntawm 17.7 x 10^-6 ib℃tshaj 20-300 degree, thermal conductivity ntawm 290-365 W / (m·K5), kev kub ntawm 1 kg ntawm usul 10. GPa thiab Poisson tus piv ntawm 0.33.
Qhov twg siv Tube
Lub cav txias radiators, them- cua txias thiab cov pa roj recirculation coolers.
Heater cores thiab cabin heating matrices rau tsheb, tsheb thauj khoom thiab tawm -cov cav tsheb loj.
Automotive cua- cua txias condensers thiab evaporators.
Hydraulic thiab kis tau tus mob roj txias.
Lub tsev cua sov tshuab: radiator panels, underfloor cua sov kav thiab hnub ci thermal collectors.
Cov dej kub hauv tsev thiab cov tank cia uas muaj kev tiv thaiv corrosion.
Corrosion Cwj Pwm hauv Coolant Service
C12200 muab huab cua tiv thaiv zoo heev thiab ua haujlwm zoo heev rau ntau yam tshuaj. Nws sawv cev rau cov uas tsis yog -oxidising ntxhia thiab organic acids, alkaline daws thiab ntsev ntsev, thiab nws tiv taus pitting thaum raug huab cua hnyav thiab dej ntuj. Nyob rau hauv lub cav coolant circuits cov hlau ua tau zoo nrog inhibited glycol coolants, muab cov inhibitor pob yog khaws cia thiab chloride qib tau qis.
Cov kev txwv tsim nyog tau txais kev saib xyuas. Tooj liab raug tawm tsam los ntawm oxidising acids, los ntawm ammonia thiab ammonium compounds, thiab los ntawm mercury los yog lead- bearing contamination. Brazing flux residues yog ib qho ua rau ntxov tsis ua hauj lwm nyob rau hauv radiators, yog li cores yuav tsum tau muab yaug thiab qhuav tom qab kev koom tes. Qhov twg cov dej txias yog qhov hnyav lossis siab heev - cov dej hiav txwv aerated ceev tau koom nrog, lub raj lub neej yuav tsum tau tshuaj xyuas tiv thaiv cov dej chemistry ua ntej cov pob khoom tsim.
Kev tsim thiab koom nrog kev xyaum
Sib sib zog nqus daim duab thiab yob txoj kev haum lub mos annealed temper; cov alloy zoo heev sib sib zog nqus-cov yam ntxwv kos duab yog nws lub ntsiab kom zoo dua cov tooj liab nyuaj.
Rauv brazing nyob rau hauv ib qho chaw tswj tau tsim cov fin- mus rau -tube daim ntawv cog lus nyob rau hauv cov cores niaj hnub no, thiab cov pa oxygen tsawg ntawm qib tsis txhob hydrogen embrittlement thaum lub voj voog.
Soldering thiab brazing ob tus nqi zoo heev, roj shielded arc vuam tus nqi zoo, thiab coated hlau arc vuam tsis pom zoo.
Annealing yog ua los ntawm 250℃thiab 650 degree, kev ntxhov siab ntawm 200℃thiab 250 degree, thiab kub ua hauj lwm ntawm 750℃thiab 950 degree.
Tube kawg yuav tsum tau deburred thiab ntxuav ua ntej nthuav los yog brazing; nto oxides thiab kos cov lubricants tiv thaiv lub suab pob qij txha.
Cov ntsiab lus tshuaj xyuas
Kev ntsuas siab thiab tawg ntawm cov tub ntxhais ua tiav lossis lub raj tau lees paub tus qauv tsim, thiab kev ntsuam xyuas flattening los yog nthuav tawm kom paub tseeb tias ductility.
Phab ntsa thickness thiab concentricity tswj ob lub siab ntsuas thiab kub hloov, yog li lawv ntsuas ntawm lub raj tiav.
Eddy-Kev ntsuas tam sim no pom cov kab nrib pleb, laps thiab suav nrog uas tuaj yeem qhib rau hauv qab cua sov.
Kev huv huv txwv tsis pub muaj cov dej ntws tawm, cov roj nplua nyeem thiab cov kab mob sib kis yuav tsum tau pom zoo, vim tias lawv ua haujlwm ntev - lub sij hawm corrosion.
FAQ
Q: Vim li cas C12200 nyiam dua cov pa oxygen-dawb tooj liab rau radiators?
Qhov sib ntxiv ntawm phosphorus ua rau C12200 yooj yim rau braze thiab muab qhov sib sib zog nqus zoo dua -kos duab thiab pitting cwj pwm hauv dej. Oxygen- cov qhab nia pub dawb yog qhov zoo dua qhov qhov siab tshaj plaws conductivity los yog lub tshuab nqus tsev vacuum tseem ceeb.
Q: Dab tsi coolant chemistry lub raj tso cai?
Inhibited ethylene glycol thiab propylene glycol coolants yog tus qauv, muab cov qib inhibitor raug tswj. Chlorides, ammonia thiab oxidising acids yuav tsum tau zam los yog tuav kom tsawg heev.
Q: Lub raj puas tuaj yeem siv rau hauv lub tshuab cua sov hauv tsev?
Yog lawm. C12200 yog dav siv rau cov radiator panels, underfloor cua sov thiab hnub ci thermal circuits, qhov twg nws tsis kam mus pitting nyob rau hauv dej kub ua rau nws ib tug ruaj khov xaiv.
Q: Lub raj coj tus cwj pwm li cas thaum lub tshuab ua kom sov?
Lub deoxidised chemistry tiv thaiv hydrogen embrittlement thiab oxidation sab hauv, yog li lub raj tuaj tawm ntawm lub voj voog lub suab thiab npaj txhij rau kev ntsuas siab yam tsis muaj qhov ntxiv anneal.
Q: Dab tsi tempers tau muab rau radiator ntau lawm?
Lub teeb kos H55 yog ib qho tseem ceeb rau lub tshuab hluav taws xob thiab cov kav dej condenser, annealed O60 rau cov khoom uas tau tsim tom qab xa khoom, thiab nyuaj kos H80 qhov twg lub raj yuav tsum muaj siab dua sab hauv.
Q: Dab tsi yog qhov kev pheej hmoo loj tshaj plaws ntawm kev ua tsis tiav?
Trapped brazing flux thiab txhoj puab heev chemistry dej. Ob leeg tawm tsam lub raj los ntawm sab hauv thiab zoo tshaj plaws los ntawm kev yaug kom zoo tom qab koom nrog thiab los ntawm kev kho dej thaum lub sijhawm ua haujlwm.
