Tub yees System: Yuav Xaiv thiab Tsim Copper Tubes li cas?

Los ntawm cov khoom muaj pes tsawg leeg

Cov kav dej tooj liab tuaj yeem muab faib ua cov kav dej ntshiab (TP2), tooj liab kav (H62/H65/H68), bronze kav (QSn6.5-0.1), thiab cov kav dej cupronickel (Ni-Cu alloy). Ntawm cov no, cov kav dej ntshiab tooj liab muaj qhov zoo tshaj plaws thermal conductivity tab sis kuj tseem kim; cov kav dej tooj dag muaj lub zog siab tab sis qis thermal conductivity; bronze thiab cupronickel cov kav dej muaj qhov zoo corrosion tab sis ua haujlwm tsis zoo.

Los ntawm kev tsim khoom

Cov kav dej tooj liab tuaj yeem muab faib ua cov pa oxygen- cov kav dej tsis muaj tooj liab, oxygen- muaj cov kav dej tooj liab, thiab sab hauv - cov kav dej tooj liab. Oxygen- cov kav dej tsis muaj tooj liab muaj cov purity siab thiab feem ntau yog siv los ua cov hlab ntsha capillary thiab lwm yam khoom muaj tseeb; oxygen-cov kav tooj liab muaj lub zog nruab nrab thiab hardness, weldability zoo, thiab feem ntau yog siv los ua cov kav dej sib txuas; puab -grooved tooj liab kav muaj grooves ntawm lub puab phab ntsa, ua tau zoo txhim khu kev qha thaum tshav kub kub hloov.

Los ntawm hardness

Cov kav dej tooj liab tuaj yeem muab faib ua peb hom: mos temper (O temper), ib nrab - kub siab (1/2H), thiab kub siab (H temper). O temper tooj liab kav yog mos thiab muaj zoo plasticity thiab ductility tab sis tsis muaj zog; H temper tooj liab kav muaj zog thiab hardness tab sis tsis zoo plasticity; 1/2H cov kav dej tooj liab muaj lub zog nruab nrab thiab cov yas, nrog kev ua haujlwm zoo thiab yog thawj qhov kev xaiv rau cov kav dej tub yees.

Cov ntaub ntawv xav tau

Cov tshuab tub yees feem ntau siv 1/2H temper ntshiab tooj liab kav (TP2M). Nws cov tshuaj muaj pes tsawg leeg yuav tsum ua raws li GB / T 17505-2010 cov cai:
Cu + Ag Ntau dua lossis sib npaug rau 99.90%
0.015% Tsawg dua lossis sib npaug P Tsawg dua lossis sib npaug li 0.040%
Cov ntsiab lus ntawm impurity ntsiab yuav tsum tau raws li: Bi Less tshaj los yog sib npaug rau 0.001%, Sb Less tshaj los yog sib npaug rau 0.002%, As Less tshaj los yog sib npaug rau 0.002%, Fe Less tshaj los yog sib npaug rau 0.005%, Pb Less tshaj los yog sib npaug rau 0.005%, S Less tshaj los yog sib npaug rau 0.005% Lessn los yog sib npaug rau 0.005%. sib npaug rau 0.002%, Sn Tsawg dua lossis sib npaug rau 0.002%.

Mechanical Properties

Cov khoom siv ntawm 1/2H temper ntshiab tooj liab kav yuav tsum ua tau raws li cov hauv qab no:
Tensile zog Rm Ntau dua los yog sib npaug rau 295MPa
Yield zog Rp0.2 Ntau dua los yog sib npaug rau 255MPa
Elongation tom qab tawg A Ntau dua lossis sib npaug li 3%

Txoj kev Pressure Vessel Code
Raws li ASME siab hlab ntsha code, qhov tsawg kawg nkaus phab ntsa tuab ntawm cov kav dej tooj liab nyob rau hauv siab tuaj yeem xam los ntawm cov qauv hauv qab no[7]: t=PD/(2S+0.8P) qhov twg: t - qhov tsawg kawg nkaus phab ntsa thickness (mm), P - tsim siab (MPa), D - sab nraud ntawm cov yeeb nkab (mm), S - tso cai rau kev ntxhov siab rau cov yeeb nkab tooj liab (MPa), feem ntau coj los ua 1/3 ~ 1/4 ntawm lub zog tawm los ntawm cov yeeb nkab tooj liab.

Txoj kev Hydraulic

Xav txog qhov poob siab thaum cov kua dej ntws, cov phab ntsa tuab ntawm cov yeeb nkab tooj liab yuav tsum tau ua raws li cov hydraulics lub zog[8]: t=D·(3ξρv^2/8σ[s])^0.5 qhov twg: ξ - kev sib txhuam coefficient, ntsig txog Reynolds tooj thiab txheeb ze roughness; ρ- refrigerant ceev (kg/m³); v - refrigerant flow velocity (m/s); σ[s] - tso cai shear stress ntawm cov yeeb nkab tooj liab (MPa), coj li 1/3 ntawm lub zog tawm los.

Vibration Fatigue Method
Cov kav dej tooj liab hauv cov tub yees txias feem ntau ua rau muaj kev ntxhov siab hloov pauv thiab yuav tsum tau kuaj xyuas kev vibration qaug zog[9]: σ[a]=Cf·σ[-1]·(2N[f])^m Tsawg dua lossis sib npaug rau [σ] qhov twg: σ[a] - amplitude (MPa) amplitude - qhov zoo ntawm qhov chaw, σ[-1] - qaug zog txwv ntawm cov khoom siv tooj liab (MPa), coj los ua 0.4-0.5 ntawm lub zog tawm los, Nf - qaug zog lub neej ( voj voog), m - qaug zog lub zog Performance index, noj li 3-4, [σ] - tso cai rau 0.6 MP, alternating ntawm lub zog tawm los. Yog li, qhov tsawg kawg nkaus phab ntsa thickness yuav raug kwv yees. Txhawm rau kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kav dej tooj liab nyob rau hauv qhov kub thiab txias, kev kub siab, thiab kev vibration, tus tsim yuav tsum feem ntau xam cov nominal phab ntsa thickness raws li hais peb txoj kev thiab xaiv tus nqi siab tshaj ntawm lawv.

Kev xaiv thiab tsim cov yeeb nkab tooj liab rau lub tshuab tub yees yog ib txoj haujlwm tsim nyog uas yuav tsum tau ua tib zoo xav txog cov khoom siv, kev ua, kev sib txuas, kev teeb tsa, thiab kev siv yam tseem ceeb. Thaum lub sij hawm tsim, cov khoom siv, lub xeev, thiab cov ntsiab lus ntawm cov yeeb nkab tooj liab yuav tsum raug xaiv kom tsim nyog raws li qhov system lub peev xwm ua kom txias, ua haujlwm nruab nrab, qhov kub thiab txias, thiab qhov ntsuas siab. Kev txiav txim siab ntawm cov yeeb nkab phab ntsa tuab yuav tsum tau muab xam los ntawm cov khoom ntawm lub siab muaj peev xwm, cov dej tsis kam, thiab kev co qaug zog kom ntseeg tau tias kev ruaj ntseg, kev ntseeg siab, thiab kev lag luam.

 

 

vim li cas thiaj xaiv peb cov khoom

Peb yog cov chaw tsim khoom lag luam thiab xa tawm tshwj xeeb hauv kev ua tiav ntau yam ntawm - cov khoom siv tooj liab zoo, suav nrog cov raj tooj liab, tooj liab / daim ntawv, tooj liab tuav, tooj liab rods, tooj liab xov hlau, thiab tooj liab strips. Peb cov chaw tsim khoom siab heev tau nruab nrog lub xeev - ntawm - - kos duab nruam casting kab, extrusion presses, txias dov mills, thiab kos duab tshuab kom paub meej thiab sib xws. Kev tswj xyuas kom zoo yog qhov tseem ceeb rau peb cov txheej txheem, ua los ntawm spectrometers rau cov khoom pov thawj, tensile testers, eddy tam sim no testers, thiab hydrostatic siab testers, lav tias tag nrho peb cov khoom ua tau raws li cov qauv thoob ntiaj teb rau kev ua tau zoo thiab kav ntev.

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