Muaj ntau lub cav hlau, xws li kav hlau yas, yas hlau yas, yas txhuas yas, thiab steel hlau yas yas. Aluminium-yeeb kab yeeb nkab yog ib yam tshiab ntawm yeeb nkab tsob ntoo uas tau tsim sai heev nyob rau hauv xyoo tas los. Tsab xov xwm no qhia txog cov yeeb nkab txhuas txhuas.
1. Cov khoom siv thiab cov txheej txheem ntau lawm
Aluminium-thoob yeeb nkab yeeb nkab ua los ntawm txhuas txhuas, thiab sab hauv txheej thiab txheej txheej ntawm txhuas yeeb nkab muaj ib co thickness ntawm yas yeeb nkab. Muaj ib txheej ntawm kua nplaum (affinity txheej) ntawm lub raj yas thiab lub txhuas hlau, yog li ntawd txhuas thiab cov yas tau muab tso rau hauv ib lub cev thiab tsis tuaj yeem tawm. Tam sim no, yuav luag tag nrho cov khoom siv rau cov kav hlau yas txhuas-yas yas yog PE kav, thiab cov kav dej PE muab faib ua HDPE los yog PEX. HDPE los yog cov cuab yeej hluav taws xob yeeb yas yeeb nkab yog tsim rau cov dej kub kub ntawm 40 ° C; PEX hu ua internal diplomatic polyethylene-plastic composite yeeb nkab, haum rau dej kub ntawm 75 ° C.
Lub thickness ntawm polyethylene sab nraum cov yeeb nkab txhuam-aluminium yog tsis pub tsawg tshaj 0.4 hli, lub puab txheej ntawm polyethylene tsis tsawg tshaj li 0.8 hli (ob zaug lub thickness ntawm txheej txheej), thiab lub thickness ntawm lub aluminium sawb yog 0.2 - hli.25 hli. Lub nplaum (kub yaj nplaum) siv rau kua nplaum sab tsuas yog siv copolymer hloov polyethylene los yog tshuaj grafted polyethylene.
Aluminium yas txhuas muaj cov hlau zoo thiab cov cuab yeej tsis sib xyaw. Muaj ob txoj hauv kev rau cov khoom siv txhoov ua cov yas txhuas-cov yas sib txuas: co-extruded composite thiab step-by-step fitting. Cov txheej txheem co-extruded yog ib zaug lub sij hawm extrusion molding ntawm sab hauv thiab txheej yas (xws li kub yaj nplaum) thiab txhuas raj, thiab feem ntau yog tsim rau kev sib txuas ntawm cov kauj ruam ntawm theem hauv qab nrog cov kab uas muaj tsawg dua 32 hli. Nyem cov roj hmab hluav taws xob, qhwv lub txhuas hlau, nyem qhov roj hmab, thiab nyem qhov cov yas yas hauv kauj ruam.
2. Qhov tseem ceeb nta thiab kev siv ntawm cov yeeb nkab txhuas-yas txeem
Lub yeeb nkab kab yog raws cov yeeb nkab hlau, thiab yog tsim los ntawm cov khoom siv tsis-xim hlau xws li polyethylene thiab ntoo khaub lig txuas polyethylene sab hauv thiab sab nraum, thiab muaj qhov zoo ntawm cov yeeb nkab hlau thiab cov yeeb nkab tsis txuas. Feem ntau ntawm cov kav dej yog tsim los ntawm cov txheej txheem ua hauj lwm (yuav tsum tau ua kom dej tsis tuaj yeem), txheej txheej, thiab cov txheej txheem tiv thaiv (yuav tsum muaj kev txhawj xeeb). Nws yog yus lub cev nyhav, lub hauv siab ntsa iab, kev ua haujlwm tsis haum thiab kev sib zog ua haujlwm zoo; cov yeeb nkab sib txuas yog lub yeeb yaj kiab zoo tshaj plaws rau cov dej thiab cov yeeb nkab nrog cov yeeb nkab pa ≥300 hli los yog ntau dua. Nws muab cov kev zoo ntawm lub zog siab, rigidity thiab corrosion tsis kam ntawm cov kav dej uas tsis yog xim hlau.
Kev sib txuas ntawm cov yeeb nkab kab yuav tsum tau ua haujlwm txias, thiab qhov kub-ua haujlwm yog qhov yuav ua kom muaj kev nthuav dav, rhuav tshem thiab xuas yaj ntawm cov yas yas. Feem ntau, muaj kev sib txuas xws li threads, ferrules, thiab clamps. Txij li thaum cov yeeb nkab sib txuas tseem yog ib yam tshiab ntawm cov yeeb nkab, tsis muaj kev tsim tsim, kev tsim kho thiab kev pom zoo hauv Suav teb. Cov neeg tsim kho thiab tsim kho cov neeg feem ntau siv cov yeeb nkab uas siv yeeb nkab rau tsim thiab tsim kho.
3, kev sib txuas ntawm cov yeeb nkab sib txuas thiab nws cov yeeb yam thiab kev siv
Tam sim no, muaj txhuas cov kav hlau yas, yas tooj sib txuas, cov kav hlau yas sib txuas, cov kav dej yas coated, thiab steel-framed PE pipes.
1. Cov yeeb nkab ntawm Aluminium-yas (PAP):
Aluminium-yeeb nkab yeeb nkab yog ib qho tshiab yeeb nkab uas tsim los ntawm kev siv tshuaj ua kom muaj txheej txheem, uas muaj cov polyethylene txheej (los yog cov ntoo uas muaj crosslink txuas) - txheej nplaum - txheej txheem txhuas - txheej nplaum ntawm polyethylene (Los yog ntoo khaub lig Polyethylene) muaj tsib txheej txheej. Ntawm lawv, txhuas txheej txheej yog lub puab tsaig thiab cov pob tw welded. Txij thaum cov yeeb nkab txhuas-yas yeeb nkab yog ib txoj yas yeeb nkev / hlau nrog yeeb nkab yeeb nkab, qhov zoo ntawm ob qho yeeb nkab thiab cov yeeb nkab yas tag nrho.
Lub puab thiab txheej txheej ntawm PE muaj cov yam ntxwv ntawm non-toxicity, corrosion resistance, lub cev nyhav thiab qis dua kev kub hnyiab. Tom qab ntoo khaub lig-khi ntawm PE, cov cua kub thiab kev ua haujlwm muaj zog zoo tuaj. Ntxiv rau kev txhim kho lub PE, lub txhuas hlau txhuas hauv nruab nrab zoo txhim kho lub zog ntawm cov yeeb nkab. Nws kuj muaj 100% pa tiv thaiv, tshem tawm tag nrho; zoo magnetic thiab antistatic zog; zoo lub cev deformation zoo, kom lub yeeb nkab ua tau Arbitrary deformation; ntxiv dag zog rau qhov siab kub thooj txav ntawm cov yeeb nkab, ua rau cov nplaim hluav taws kub nyhiab ntawm qhov yeeb nkab; qhov coefficient ntawm thermal expansion yog qis tshaj li ntawm PE, uas txo cov thermal expansion coefficient ntawm cov yeeb nkab kab thiab txhim kho qhov kev ruaj ntseg ntawm cov yeeb nkab.
Vim li no, cov yeeb nkab txhuas txhuas-txhuas muaj cov yam ntxwv tshwj xeeb thiab ntau hom kev siv:
1 lub siab ua kom muaj zog, ua haujlwm tsis haum zoo (PAP yeeb nkab ua haujlwm kub -40 ~ 60 ° C, XPAP yeeb nkab ua haujlwm kub -40 ~ 95 ° C), tsis muaj teebmeem zoo, tsis muaj mob, kav dej.
Qhov 2 teev ntawm ib qho yooj yim thiab yoog raws tau yooj yim tshem tawm cov kev poob siab hauv lub raj xa dej thiab yuav tsis ua kom hnov suab nrov ntawm lub suab nrov.
3 Nws yog ib qho yooj yim rau nruab los ntawm kev siv lub cim clamping sib koom; cov yeeb nkab tuaj yeem sib khov dawb, uas tuaj yeem txo qhov yeeb nkab sib txhuam thiab lub luj tshib. Nws muaj peev xwm khoov tau tsis muaj qhov teeb meem loj dua, thiab tau hla qhov nqaj thiab sab nraud thiab lwm yam khoom raws li qhov tseeb qhov teeb meem, txo ntau tus luj tshib, txuag zog ntawm 50% piv nrog cov kav dej steel.
4 Lub coefficient ntawm thermal expansion yog 2.5 × 10? 6m / m. K, uas yog tsuas yog 1/8 ntawm lub raj tshuaj polyvinyl chloride.
5 hluav taws kub nyhiab kev ua tau zoo dua rau PVC yeeb nkab, kev txhim kho corrosion zoo, tuaj yeem thauj tau cov roj ntau corrosive, roj.
2. Muab cov yeeb nkab yas rau hlau:
PVC hlua steel yeeb nkab. Qhov no yog ib hom dej tshiab uas tsim los ntawm cov teb chaws hauv xyoo 1970s. Vim tias qhov tsis muaj zog ntawm cov kav hlau yas xws li PVC thiab qhov tsis txaus siab ua haujlwm, nws tsis kam siv rau hauv qhov hnyav. Lub sijhawm no, yuav tsum muaj hlau kav. PVC-hlua steel kav tau tsim los ntawm qhov no.
Lub yeeb nkab-yeeb-txaij PVC siv rau hauv cov dej-kev xaav hlau yeeb nkab kom ob leeg muaj kev sib koom ua ke kom dhau los ua PVC-hlua steel yeeb nkab. Nws txuas cov kev zoo ntawm cov yas yas thiab steel leeg kom tsis txhob muaj qhov tsis zoo. Txoj kev txuas txuas kuj yog ib txoj hlua txuas, uas yog kiag li tshaj rau ntawm cov yeeb nkab uas tsis muaj yeeb nkab uas yog thawj zaug thiab tsis tshua yooj yim siv. Yog li ntawd, nws tau tsim zoo heev hauv Nyiv, Tebchaws Meskas, thiab Tebchaws Europe, vim nws tus nqi qis dua li ntawm cov kabmob thiab cov kav hlau tsis huv, tshwjxeeb hauv cov tsev siab.
PE hmoov reini hlua steel yeeb nkab. Qhov no yog ib qho yeeb nkab tshiab tsim hauv xyoo 1970 thiab xyoo 1980s. Lub hom phiaj ntawm txoj kev loj hlob yog kom muaj qhov kev ua tau zoo li PVC-hlua steel kav, tiam sis nrog kev lag luam zoo dua. Nws yog tsim los ntawm melting ib txheej ntawm PE hmoov cob rau sab hauv phab ntsa ntawm cov yeeb nkab dej. Nyob rau hauv xyoo tsis ntev los no, cov neeg tsim khoom hauv cov nroog Shanghai, Sichuan, thiab Zhejiang tau nqis tes rau hauv cov kav dej ntawm cov nqi qis tshaj qhov ntawm cov kav hlau yas txhuas, uas yog kev sib tw. Raws li cov yam ntxwv ntawm txoj hlua hlau yeeb nkab, nws tuaj yeem pom zoo raws li cov yas yeeb nkab steel hlau, uas yog, cov hlua steel yeeb nkab yog ib txoj hlua hlau uas muaj qhov zoo ntawm cov yeeb nkab yas.
Tsis tas li ntawd, nws yog ib qho tseem ceeb hais tias tsis ntev los no Sichuan tau tsim ib txoj hlua dej-hlua yas nrog nws cov cuab yeej ntiag tug cov cai. Nws yog ib lub yeeb nkab uas muaj hlua khib nyiab uas muaj cov hlua khi rau hauv cov phab ntsa sab hauv thiab cov yeeb nkab uas tsis muaj pa roj carbon dioxide. Mechanical compounding. Ntxiv rau tag nrho cov txiaj ntsig ntawm txoj yas hlau yas yeeb nkab rau hauv kev ua lag luam, cov txheej txheem yeeb nkab-hauv cov yeeb nkab muaj txheej txheem ntawm cov txheej txheem tshwj xeeb, uas zoo heev rau kev sib xyaw kom haum thiab zoo dua daws cov puab thiab txheej txheej . Qhov teeb meem ntawm kev sib haum ntawm thermal expansion ntawm ntau cov ntaub ntawv, thiab kev siv ntawm snap-on ceev-haum thiab ces txuas, yooj yim installation, high school ntseeg siab, muaj nyob rau hauv hlau-yas yeeb nkab.
3. Cov pob txha hlau hlau PE yeeb nkab: Cov hlau pob zeb hlau PE yeeb nkab yog ua los ntawm cov qib siab uas tsis tshua muaj hlau phom raws li cov theem tshiab thiab qhov ceev-ntom polyethylene raws li daim duab. Los ntawm cov xov hlau xaim ntawm cov hlau hlau thiab cov yas extrusion thiab txhaws, zaj duab xis yog tujtaws rub rau ntawm txoj kab ntau lawm. Tshiab ob tog sib tiv thaiv corrosion siab yeeb nkab rau txoj kev ua. Cov kab taub yas yog Φ50 ~ Φ500, thiab flange txuas nrog. Nws yog tsuas yog siv rau hauv kev sib koom tes hauv cov chaw, tshuaj lom neeg thiab cov roj tub rog, thiab tus nqi tseem kim.
4. Cov yas coated steel yeeb nkab: Yas coated steel yeeb nkab yog yaj hauv cov phab ntsa hauv cov yeeb nkab uas muaj cov thickness ntawm 0.5-1.0mm polyethylene (PE) cob, ethylene acrylic acid copolymer (EAA), epoxy (EP) hmoov, tsis yog -toxic poly Hlau-yas kab yeeb ua los ntawm cov khoom siv organic xws li propylene (PP) lossis cov tshuaj tsis muaj tshuaj polyvinyl chloride (PVC). Nws tsis tsuas yog qhov zoo ntawm lub siab zog, yooj yim kev twb kev txuas thiab dej ntws feem ntawm cov kav dej, tab sis kuj overcomes tus corrosion ntawm steel kav. Tus tsim lub neej yuav tsum muaj txog li ntawm 50 xyoo vim yog qhov tsis zoo ntawm cov pa phem, nplai thiab yas raj zog, tsis muaj hluav taws kub nyhiab. Qhov tsis zoo ntawm cov yeeb nkab yog tias nws yuav tsum tsis txhob raug nyom rau thaum lub teeb nruab, kub ua haujlwm thiab fais fab kev lag luam, thiab lwm yam., Qhov txiav nplaum yog siv los ntawm cov khw nrog cov chav ua haujlwm tsis zoo. Lub ntsiab lus tseem ceeb yog Φ 15-Φ100.
