Cov kav dej ua los ntawm cov kav dej polyethylene. Qhov zoo thiab qhov tsis zoo ntawm txoj kev loj los ntawm cov khoom siv no. Cov khoom hloov kho thiab lawv cov khoom. Cov cai xaiv, tus nqi ntawm cov kav dej polyethylene rau siv hauv tsev.
Cov kav dej polyethylene rau dej yog cov khoom tsim los ntawm cov yas hloov pauv rau txoj kev loj hauv chav tsev thiab hauv ib cheeb tsam tsev. Cov khoom siv muaj nyob hauv ntau yam kev hloov kho, uas nthuav tawm qhov muaj peev xwm ntawm nws siv hauv tsev. Koj tuaj yeem nrhiav cov ntaub ntawv hais txog cov yam ntxwv ntawm cov kav dej polyethylene, tso cai rau koj xaiv qhov khoob ntawm txoj hauv kev los tsim cov kav dej hauv qhov chaw tshwj xeeb, hauv kab lus no.
Cov yam ntxwv ntawm cov kav dej polyethylene rau dej
Duab ntawm cov yeeb nkab polyethylene rau dej txias
Classic polyethylene tsuas yog muaj cov ethylene molecules. Cov khoom siv yog lub teeb heev thiab ywj ywj, uas txawv nws los ntawm cov khoom yas zoo sib xws.
Thawj cov kav dej polyethylene tau tsim los ntawm nws, uas tau xaiv PE63. Muaj ntau qhov zoo, lawv kuj tseem muaj qhov tsis zoo, yog li cov tuam txhab pib hloov kho cov khoom. Raws li qhov tshwm sim, ntau yam khoom lag luam tau tshwm sim nrog cov yam ntxwv sib txawv uas ua rau kom nthuav dav ntawm lawv daim ntawv thov.
Vim lawv lub peev xwm, lawv tau siv los tsim cov kav dej txias thiab dej kub. Lawv tuaj yeem siv los tso cov dej haus. Cov kav dej tau dhau los ua kev sib tw rau cov qauv hlau ib txwm muaj.
Cov lus hauv qab no qhia txog cov yam ntxwv sib piv ntawm cov hlau thiab cov kav dej polyethylene:
| Kev xaiv | Hlau | Cam khwb cia hlau | Polyethylene (HDPE) |
| Qhov hnyav ntawm cov yeeb nkab nrog txoj kab uas hla ntawm 16 hli, 1 r.m. | 17, 5 | 28, 1 | 3, 77 |
| Lub neej | 15-25 xyoos | Kwv yees li 80 xyoo | Kwv yees li 50 xyoo |
| Cov tshuaj tiv thaiv kab mob | Nruab nrab | Nruab nrab | Tsis muaj zog |
| Kev sib cuam tshuam nrog cov kab mob me me | Qhov nruab nrab | Siab | Tsis muaj zog |
| Hnav tsis kam | Nruab nrab | Tsawg | Siab |
| UV tsis kam | Tsis hnov mob | Tsis hnov mob | Rhiab heev |
| Tensile zog | Luv luv | Luv luv | Siab |
Nco tseg! Cov kav dej polyethylene rau cov dej xa nrog lub taub txog li 50 mm raug muag hauv cov coils, qhov seem hauv 12 m qhov ntev.
Hauv daim duab, hom polyethylene kav dej rau dej
Cov txheej txheem dej tau sau los ntawm cov kav dej polyethylene hauv qab no:
- PE tub … Tsim los rau dej txog +45 degrees.
- PEX cross-linked polyethylene kav … Piv rau cov tshuaj polyethylene ib txwm, cov kab ntu ntawm cov khoom siv tau hla kev sib txuas nrog cov qauv network peb-seem. Qhov ua tau zoo ua rau nws muaj peev xwm ua haujlwm PEX hauv cov txheej txheem dej kub.
- PEX-raws ntau cov kav dej … Lawv muaj peb txheej - ob ntawm polyethylene thiab thib peb ntawm txhuas ntawv ci lossis fiberglass, tso nruab nrab ntawm lawv. Cov txheej txheem rau tso kua dej kub tau sib sau ua ke los ntawm lawv.
Lub neej ua haujlwm ntawm cov khoom nyob ntawm qhov xwm txheej cia. Cov neeg tsim khoom tau tsim cov lus pom zoo los khaws cov yam ntxwv ntawm cov kav dej polyethylene rau cov dej siv tau ntev:
- Lawv tuaj yeem dag tau ntev hauv lub tsev rau khoom lossis sab nraum zoov nrog lub ru tsev. Npog lawv nrog cov ntaub thaiv npog ruaj khov.
- Khaws cov khoom ntawm ib theem saum npoo.
- Yuav tsum tsis muaj qhov kub hloov pauv sai sai hauv lub tsev rau khoom kaw.
- Khaws cov kav dej ntawm gaskets, uas tau muab tso rau hauv qhov sib ntxiv ntawm 1 m.
- Thaum thauj cov pallets, muab cov thawv tso rau hauv qhov siab tshaj ntawm 4 qib.
- Tawm qhov deb ntawm lub tshuab cua sov mus rau cov khoom ua haujlwm ntau dua 1.5 m.
Qhov zoo thiab qhov tsis zoo ntawm cov kav dej los ntawm cov kav dej polyethylene
Cov kav dej ua los ntawm cov kav dej polyethylene muaj ntau yam txiaj ntsig zoo. Cov neeg siv qhia cov khoom hauv qab no:
- Lub neej ua haujlwm ntawm cov kav dej tuaj yeem ntev txog 50 xyoo.
- Tus nqi ntawm cov kav dej polyethylene tsawg, uas ua kom ntseeg tau tus nqi tsim nyog ntawm cov qauv.
- Cov khoom muaj qhov ntom ntom tsawg (hauv 0.95 g / cm2), yog li ntawd hnyav heev. Nws tuaj yeem raug teeb tsa siv txoj kev trenchless.
- Kab kab tiv taus rauj rauj dej vim cov khoom muaj peev xwm ncab thaum siab nce.
- Polyethylene tsis corrode lossis raug cov tshuaj electrochemical. Nws tsis hnov mob rau cov tshuaj muaj nyob hauv cov av.
- Thaum tso hauv av, kab tsis xav tau rwb thaiv tsev.
- Cov khoom tuaj yeem tiv taus qhov kub nce mus txog -110 degrees. Tom qab defrosting, cov kav dej raug txo kom lawv qhov loj me me.
- Polyethylene yog ib puag ncig zoo thiab feem ntau siv rau kev haus dej haus.
- Kev teeb tsa tau nrawm heev vim qhov hnyav ntawm cov khoom ua haujlwm thiab muaj cov khoom pab. Vim li no, tsis muaj cov cuab yeej tshwj xeeb xav tau thaum sib sau ua ke, thiab ib zaug nws tuaj yeem thauj khoom 5-7 zaug ntau dua li cov hlau.
- Txoj kev loj yuav kho tau sai.
- Cov workpieces yog qhov txiav txim siab ntev, uas txo cov naj npawb ntawm cov pob qij txha.
- Tus nqi ntawm cov kav dej los ntawm cov kav dej polyethylene yog 40% tsawg dua los ntawm lwm cov ntaub ntawv.
- Tsis muaj limescale tsim ntawm phab ntsa thaum dej kub tau faib tawm.
- Kev sib xyaw ua ke tsis tsim nyob rau saum npoo ntawm cov qauv vim qhov ua kom muaj cua sov tsawg ntawm cov khoom.
- Polyethylene muaj lub zog nqus suab.
Cov neeg siv yuav tsum paub txog qhov tsis zoo ntawm cov kav dej polyethylene. Tsis muaj ntau ntawm lawv, tab sis lawv tuaj yeem tsim teeb meem:
- Polyethylene hlawv, qee hom tsiaj tso cov tshuaj lom thaum lub sij hawm hlawv.
- Cov khoom lag luam ntshai tshav ntuj, vim tias lawv ua tsis tau sai, tab sis cov ntoo txuas hla polyethylene tsis muaj qhov tsis zoo.
- Qee qhov kev hloov pauv yog ntshai ntawm te, yog li ntawd, thaum siv sab nraum lub tsev, cov kav dej yuav tsum tau rwb thaiv tsev.
- Qee qhov kev hloov pauv muaj peev xwm ua kom ntev li 8-10 zaug, yog li ntawd, cov cua sov nthuav dav tau them rau hauv cov kab ke.
Yuav ua li cas xaiv txoj cai polyethylene kav dej rau dej?
Cov kav dej polyethylene tau siv los sau cov kav dej kub thiab txias, cov dej hauv vaj, dej tso tawm, thiab lwm yam. Txoj hauv kev tuaj yeem yooj yim muab zais rau hauv av, hauv phab ntsa, lossis qhib sab laug. Txhawm rau kom cov txheej txheem dej ua haujlwm kom raug rau lub sijhawm ntev, nws yog qhov tsim nyog los xaiv cov khoom tsim nyog rau txhua kis tshwj xeeb.
Cov khoom siv ntawm cov kav dej polyethylene rau dej
Cov txheej txheem ntawm cov yeeb nkab polyethylene ntau txheej rau cov txheej txheem dej
Polyethylene kav yog monolithic lossis ntau txheej. Cov khoom ib txheej suav nrog cov khoom lag luam ua los ntawm cov khoom lag luam zoo ib yam polyethylene PE63, PE80, PE100 thiab cross-txuas PEX-A, PEX-B, PEX-C, PEX-D. Ntau tus neeg feem ntau suav nrog peb txheej - nruab nrab ntawm sab hauv thiab sab nrauv muaj txheej txheej ntawm cov ntawv ci hlau lossis fiberglass.
Cia peb txiav txim siab ntau ntxiv txog cov khoom ntawm txhua hom polyethylene kav rau dej:
- PE63 cev … Lawv muaj qhov ntom ntom ntom nti, vim cov molecules nyob ntawm qhov deb ntawm ib leeg. Yog li ntawd, lawv tawg thaum lub siab hloov pauv thiab tom qab siv ntev. Cov dej txias (tsis tshaj 45 degrees) raug tso los ntawm lawv, muab yam tsis muaj kev nyuaj siab. PE63 cov kav dej tau tsim txog li 6 cm inch, nrog phab ntsa tuab txog li 4.5 hli. Lawv tuaj yeem tiv taus qhov siab ntawm 1 MPa.
- PE80 cev … Txhim kho hauv cov qauv nrog lub siab tshaj plaws ntawm 16 MPa. Qhov khoob tau ua nrog txoj kab uas hla txog li 90 hli. Yuav siv tau sab hauv tsev thiab sab nraum zoov.
- PE100 cev … Ua nrog txoj kab uas hla 110-1200 hli. Cov no yog cov qauv ruaj tshaj plaws vim lawv cov phab ntsa tuab thiab ntom ntom. Siab 21 MPa. PE100 sib piv zoo nrog PE80: nws muaj kev nkag siab ntau dua thiab poob siab me me; cov kav dej sib zog, thiab tus nqi tawg yog 5 zaug siab dua PE80; PE100 tau nce khov tiv taus thiab tiv taus zoo rau kev puas tsuaj.
- PE-RT kav … Lawv tau siv hauv cov dej kub tsim qauv. Qhov tseeb, qhov no yog polyethylene PE80, PE100, uas tau ntxiv nrog cov tshuaj ntxiv uas tso cai rau kab kom tiv taus qhov kub thiab txias. Txawm li cas los xij, dej kub tuaj yeem hla dhau lawv rau lub sijhawm luv luv xwb.
- PEX cross-linked polyethylene kav … Lawv zam dej kub nrog qhov kub ntawm +95 degrees zoo, tsis muaj sijhawm txwv. Cov khoom lag luam tau ruaj khov thiab tiv taus piv rau lwm hom yas. Muaj ntau hom kev sib txuas ntawm polyethylene, uas sib txawv hauv cov txheej txheem tsim khoom - tshuaj lossis lub cev. Kev hloov kho sib txawv hauv qib ntawm kev ua tau zoo thiab lub zog. PEX -A tuaj yeem ua haujlwm hauv qhov kub thiab txias los ntawm -100 txog +100 degrees. Muaj lub cim xeeb zoo thiab rov ua nws qub qub. PEX-B, PEX-C muaj kev txwv vim qee qhov kev ywj pheej thiab teeb meem muaj zog. XLPE kav yaj ntawm qhov kub ntawm +150 degrees thiab hlawv ntawm +400 degrees. Qee lub npe tuaj yeem ncav cuag li 800%. Ib qho ntawm qhov tsis zoo tseem ceeb yog qhov xav tau siv PEX kav dej nrog txheej tiv thaiv kom tsis txhob sib kis hauv cov txheej txheem dej. Nws yog qhov muag heev, yog li koj yuav tsum tau ceev faj nrog lawv thaum ua haujlwm thiab thauj mus los.
- Cov kav dej ntau … Ntxiv nrog rau polyethylene, cov khoom zoo li no muaj cov ntawv txhuas lossis fiberglass. Lawv tau muab tso rau nruab nrab ntawm cov khaub thuas sib txuas ntawm polyethylene. Cov hlau txheej tiv thaiv cov qauv los ntawm kev nthuav tawm thaum ua kom sov, yog li tsis tas yuav tsum muaj cua sov nthuav dav ntxiv. Lawv tau txheeb xyuas los ntawm PEX / AL / PEX npav. Peb txheej txheej nrog cov iav fiber ntau ua kom nruj ntawm txoj kab, tab sis tib lub sijhawm ua rau nws muaj zog. Cov khoom lag luam ntawm hom no yog cim nrog lub npe PEX-FB-PEX.
Cov yam ntxwv tshwj xeeb ntawm cov kav dej polyethylene rau dej
Txhua cov ntaub ntawv hais txog cov yeeb nkab tuaj yeem pom hauv cov khoom lag luam daim ntawv hla tebchaws thiab ntawm nws qhov chaw. Yam koj yuav tsum tau them sai sai rau yog sau hauv qab no.
Cov khoom zoo sib xws raug cais los ntawm cov ntsuas lub zog yam tsawg kawg mus sij hawm ntev (MRS) … Cov npe khoom luv luv MRS6, 3, MRS8, MRS10. Lawv mus muag hauv qab cov cim sib txawv: PE63, PE80 thiab PE100. Cov kev hloov kho no yog qhov zoo tshaj plaws rau kev tsim cov kav dej hauv tsev. Ua haujlwm siab ntau - 10-25 atmospheres.
Cov kav dej polyethylene tseem muaj qhov tshwj xeeb los ntawm Txheem Dimension Piv Txwv (SDR) … Nws yog qhov tshwm sim ntawm kev faib tawm sab nrauv (nominal) los ntawm phab ntsa tuab (nominal). Tus nqi no qhia tau hais tias SDR tus nqi nce nrog ua kom cov phab ntsa tuab tuab. Nws txiav txim siab ua haujlwm ntawm txoj kev loj ntawm cov khoom siv no.
Cov yam ntxwv ntawm kev siv cov kav dej polyethylene rau kev muab dej nrog sib txawv SDRs tau qhia hauv cov lus:
| Cov yeeb nkab qib | Khoom | Daim ntawv thov |
| PEB 63SDR11 | Tsawg ntom, kua muag thaum dheev sov lossis txias | Rau cov dej txias tsis muaj siab |
| PEB 63SDR17, 6 | Kev tso cai sab hauv siab - txog 10 atm | Rau cov dej txias uas tsis tshua muaj siab |
| PE 80 SDR13, 6 | Qhov ntom yog siab dua, tab sis kuj tawg nrog qhov hloov pauv kub | Rau cov dej txias |
| PEB 80SDR17 | Qhov ntom tau siab dua, tab sis kuj tawg nrog qhov kub hloov pauv | Rau siv sab hauv tsev thiab rau dej ntawm thaj chaw |
| PE 100 SDR 26 | Kev kub ceev, tiv taus qhov kub hloov pauv zoo | Txhawm rau siv rau txhua qhov kav dej txias |
| PE 100 SDR21 | Nce phab ntsa tuab | Txhawm rau siv hauv txhua qhov kav dej |
Cov yam ntxwv tseem ceeb ntawm cov kav dej polyethylene rau dej kuj tseem suav nrog:
- Dej kub thiab siab … Cov kav dej txias muaj qhov txwv siab tshaj ntawm +40 degrees. Hauv qab mus txog 0 degrees. Txawm hais tias muaj cov kev txwv uas twb muaj lawm, cov khoom lag luam tuaj yeem ua lawv cov haujlwm hauv qhov kub ntau dua yam tsis muaj kev puas tsuaj.
- Ua haujlwm siab … Qhov ntsuas yog nyob ntawm qhov muaj pes tsawg leeg ntawm cov khoom, phab ntsa tuab thiab cov khoom siv taub. Lub zog tshaj PE100 kav. Cov kav dej hauv tsev yuav tsum tiv taus 6-16 huab cua.
- Qhov ntev ntawm cov kav dej polyethylene rau dej … Cov kab ke hauv tsev feem ntau tau sib sau ua ke los ntawm cov kav dej nrog txoj kab uas hla 20 hli.
- Kev nqus tshwj xeeb … Tus yam ntxwv tso cai rau koj txiav txim siab qhov hnyav ntawm 1 ntsuas ntsuas ntawm cov khoom. Nyob ntawm qhov ntom ntom ntawm polyethylene. Piv txwv li, yog tias qhov nqus tshwj xeeb yog 200 kg rau ib lub meter linear, tom qab ntawd nws yuav tsis muaj peev xwm nce cov dej tsis muaj crane.
- Bandwidth … Nyob ntawm qhov feem ntau ntawm qhov ntxhib ntawm sab hauv.
- Lub zog muaj zog … Rau cov kav dej, nws yog 1.25 piv rau tus nqi tshaj tawm.
- Tus txheeb ze txuas ntxiv … Qhov ntsuas ntsuas txiav txim siab txog qib ntawm kev ua tau zoo ntawm txoj kab. Cov kav dej, txawm tias nyob hauv qhov cuam tshuam los ntawm qhov cuam tshuam loj rau sab nraub qaum, tsis txhob tawg, tab sis ncab. Qhov kawg thauj khoom rau PE80 yog 16 MPa, rau PE100 - 21 MPa. Qhov siab tshaj plaws elongation yog 3%.
Nqe ntawm cov kav dej polyethylene rau dej
Tus nqi ntawm cov yeeb nkab polyethylene rau cov dej haus nyob ntawm cov hauv qab no:
- Txoj kev npaj … Muaj ntau hom khoom lag luam polyethylene, txhua tus uas tau tsim los siv thev naus laus zis tshwj xeeb. Qhov pheej yig tshaj yog tau los ntawm cov khoom siv ib txwm muaj. Rau hla polyethylene sib txuas, cov chav tshwj xeeb xav tau, yog li lawv kim dua.
- Kev siv tau ntawm cov kav dej … Cov khoom siv uas tsuas yog siv rau cov dej txias txias yog pheej yig dua.
- Qhov chaw ntawm ntau lawm … Qhov kev ncua deb ntxiv los ntawm cov chaw tsim khoom mus rau qhov chaw siv, ntau dua tus nqi thauj mus los.
- Khoom zoo … Tus nqi ntawm cov yeeb nkab polyethylene rov ua dua yog qis dua vim qhov tsis zoo ntawm cov khoom siv raw. Yog li ntawd, nws raug nquahu kom yuav cov kav dej polyethylene rau cov dej hauv cov khw muag khoom lag luam txhawm rau zam qhov tsis raug.
- Ua siab ntev … Cov kav dej muaj zog tshaj yog ntom thiab kim dua.
Nco tseg! Lub phab ntsa tuab cuam tshuam rau cov polyethylene uas nkag mus rau hauv kev tsim cov yeeb nkab. Lub tuab nws yog, tus nqi siab dua ntawm cov khoom.
Nqe ntawm cov kav dej polyethylene rau dej hauv Ukraine:
| Hom yeeb nkab | Sab nraum txoj kab uas hla, hli |
Price, UAH rau 1 rm. |
| PE | 16-50 | 11-71 |
| PE | 16-25 | 16-26 |
| PEX / ALX / PEX | 16-32 | 29-152 |
Nqe ntawm cov kav dej polyethylene rau dej hauv Russia:
| Hom yeeb nkab | Sab nraum txoj kab uas hla, hli |
Price, UAH rau 1 rm. |
| PE | 16-50 | 23-53 |
| PE | 16-25 | 29-55 |
| PEX / ALX / PEX | 16-32 | 53-288 |
Yuav xaiv cov kav dej polyethylene rau dej li cas - saib cov vis dis aus:
Cov kav dej polyethylene tau siv dav hauv ntau yam qauv, yog li nws yog qhov tseem ceeb uas tuaj yeem xaiv cov khoom lag luam rau cov kav dej hauv tsev. Cov ntaub ntawv muab hauv kab lus ua rau nws muaj peev xwm txiav txim siab hom polyethylene blanks rau kev tsim kho cov txheej txheem dej hauv ib kis tshwj xeeb.
