Puas yog Ductile Iron zoo dua li PVC?

Hauv cov phiaj xwm cawm neeg hauv nroog thiab kev tsim kho cov kav dej loj, kev xaiv cov khoom siv yeeb nkab cuam tshuam ncaj qha rau cov nqi khiav lag luam thiab kev saib xyuas thiab kev ruaj ntseg ntawm kev muab dej rau ntau xyoo tom ntej. Cov yeeb nkab PVC, vim lawv lub teeb thiab tiv taus xeb, ib zaug yog qhov kev xaiv uas tau sib cav heev hauv kev ua lag luam.

Txawm li cas los xij, thaum peb txav mus dhau qhov kev txwv ntawm "cov nqi yuav khoom pib" thiab tshuaj xyuas qhov teeb meem los ntawm qhov kev xav ntawm kev tiv taus siab, kev tiv taus av qeeg thiab kev puas tsuaj, thiab tag nrho cov nqi ntawm lub neej, cov kav hlau ductile qhia tau tias muaj qhov zoo dua.

Tsab xov xwm no yuav tshuaj xyuas tob txog tsib qhov laj thawj tseem ceeb vim li cas cov kav dej hlau ductile zoo dua li cov kav dej PVC thiab tshawb nrhiav seb DINSEN, ua tus neeg muab cov kav dej zoo tshaj plaws, tau tsa cov txiaj ntsig ib txwm muaj ntawm cov kav dej hlau ductile mus rau qib siab tshiab los ntawm kev txhim kho thev naus laus zis li cas.

Qhov kev ntshai tshaj plaws rau cov tes hauj lwm muab dej yog dab tsi? Cov yeeb nkab tawg.

Lub zog hydrostatic ntev ntawm cov kav dej PVC txiav txim siab tias lawv yooj yim tawg brittle nyob rau hauv kev hloov pauv loj lossis dej hammer cuam tshuam. Tshwj xeeb tshaj yog nyob rau hauv thaj chaw txias, qhov kub qis brittleness ntawm cov kav dej PVC yog qhov txwv tseem ceeb hauv lawv daim ntawv thov.

Cov txiaj ntsig ntawm cov kav hlau ductile: Cov kav hlau ductile muaj lub zog tensile zoo heev thiab elongation (tus qauv yuav tsum tau ≥10%). Qhov no txhais tau tias cov kav hlau ductile tsis yog tsuas yog "tawv," tab sis kuj muaj tus yam ntxwv ntawm "kov yeej qhov tawv nrog kev ywj pheej." Lawv tuaj yeem nqus tau cov khoom hnyav los ntawm qhov chaw ntawm txoj kev thiab dej ntaus, tiv thaiv cov kav dej tawg.

• Kev Txhawb Nqa Tshuab DINSEN: Rau cov xwm txheej dej siab siab,DINSEN cov kav hlau ductiledhau cov txheej txheem annealing kom meej kom ntseeg tau tias tus nqi spheroidization ntau dua 85% hauv cov qauv metallographic, muab cov kav dej ob qho tib si lub zog ntawm hlau thiab lub zog ntawm hlau.

Cov kav dej hauv nroog raug faus tob hauv av, ntsib kev hloov pauv geological uas tsis tuaj yeem kwv yees tau.

Feem ntau cov kav dej PVC siv cov kev sib txuas uas yooj ywm nrog cov nplhaib roj hmab. Txawm hais tias lawv muaj qee qhov kev ywj pheej, lub cev kav dej nws tus kheej muaj qhov modulus qis, ua rau nws yooj yim rau kev hloov pauv radial ntau dhau thaum lub sijhawm tsis sib npaug, ua rau muaj kev xau ntawm cov pob qij txha lossis cov kav dej tsis ruaj khov.

Cov Zoo ntawm Cov Kav Hlau Uas Muaj Qhov Coob: Cov kav DI siv cov pob qij txha T-hom lossis cov pob qij txha K-hom. Qhov kev tsim no tso cai rau txhua qhov sib koom ua ke kom tso tawm kwv yees li 3-5 degrees ntawm qhov nkhaus thaum cov kav dej ntsib av qeeg lossis av hloov chaw. Tag nrho cov kav dej deforms nrog kev khoov zoo li "zaj av hauv av" yam tsis tawg. Qib ntawm kev ua av qeeg no tsis muaj qhov sib piv los ntawm cov kav dej PVC ua los ntawm ib yam khoom.

Tsis tas li ntawd xwb, hauv cov dej nyoos loj thiab cov kab xa hluav taws xob ntawm DN300 thiab siab dua, qhov zoo ntawm cov kav hlau ductile nrog cov ntaub sab hauv yog qhov tseem ceeb heev. Thaum PVC muaj phab ntsa sab hauv du heev,Cov yeeb nkab hlau ductiles tsim ib txheej calcification ruaj khov rau ntawm lawv phab ntsa sab hauv dhau sijhawm, ua rau qhov chaw du dua.

Qhov tseem ceeb tshaj, cov kav hlau ductile tuaj yeem tiv taus qhov ceev ntawm centrifuge siab dua, ua kom cov phab ntsa tuab sib npaug thiab tiv thaiv "flutter" lossis "water hammer resonance" uas tuaj yeem tshwm sim nrog cov kav dej PVC ntawm cov dej ntws ntau dhau.

Puas yog cov hlau ductile zoo dua li PVC?Ua cov kws ua haujlwm ntawm DINSEN, peb tuaj yeem muab cov lus teb meej: rau cov kav dej tseem ceeb uas npaj siv rau ntau tshaj 50 xyoo, cov kav hlau ductile yog tib qho kev daws teeb meem uas muaj zog nruab nrab mus rau siab, muaj zog heev, tiv taus av qeeg, thiab tsis tas yuav saib xyuas ntau. Rau kev muab dej hauv nroog kom muaj kev nyab xeeb, xaivDINSEN cov kav hlau ductile.