1.Qhov coding ntawm cov kav dej feem ntau muaj dab tsi?
Qhov saum npoo ntawm cov kav dej PPR feem ntau muaj cov tshuaj tsuag cov lej, uas muaj cov cim thiab cov lej. Cov tshuaj tsuag dej ntawm cov yeeb nkab dej feem ntau muaj cov ntaub ntawv qhia txog cov khoom lag luam, cov qauv kev lag luam, kev ua haujlwm tshwj xeeb, hnub tsim khoom, thiab lwm yam.
2. Tus lej inkjet tuaj yeem raug tshem tawm. Qhov no puas yog ib qho tshwm sim?
Txhawm rau kom tsis txhob ua kom puas rau saum npoo ntawm cov yeeb nkab, cov ntawv luam tawm ntawm PPR yeeb nkab uas peb feem ntau pom tau txais cov khoom siv hluav taws xob zoo ib puag ncig. Txoj cai tsuas yog txuas rau saum npoo ntawm cov yeeb nkab thiab yuav tsis nkag mus lossis tshuaj lom neeg nrog cov khoom siv yeeb nkab. Vim yog lub ntsej muag du ntawm cov yeeb nkab, cov ntsiab lus cuam tshuam luam tawm los ntawm lub tshuab luam ntawv number case yuav ploj mus lossis ploj nrog kev sib txhuam tsis tu ncua ntev, uas yog qhov tshwm sim ib txwm muaj thiab tsis muaj kev cuam tshuam rau qhov zoo ntawm cov khoom nws tus kheej.
3. Muaj ntug dawb ntawm qhov txiav ntawm cov kav dej. Puas muaj teeb meem nrog cov khoom siv?
PPR raw material is commonly known as random copolymer polypropylene, which is a kind of polymer. The appearance of white edges after cutting is a unique property of plastic polymers. It means that under the action of tensile stress, the polymer produces local plastic deformation due to stress concentration in some weak parts of the material, which is called "silver streak phenomenon". , after heating, the silver streak will disappear.
4. Puas yog cov kav dej fittings ua los ntawm cov tooj liab ntshiab?
Cov hlau siv los ua cov kav dej fittings, feem ntau yog tooj dag. Brass yog ib qho alloy uas muaj tooj liab thiab zinc. Brass muaj zog hnav tsis kam thiab hardness, thiab nws lub cev muaj zog tau raug pov thawj tias tsim nyog rau kev tsim cov li qub, cov kav dej, txuas cov kav dej rau sab hauv thiab sab nraud cua txias, thiab radiators.
Cov tooj liab ntshiab tsis haum rau kev ua cov yeeb nkab fittings vim nws qhov kev ntxhib los mos kuj zoo nkauj. Nws cov hluav taws xob zoo conductivity thiab ductility yog tsim los ua cov ntaub ntawv xws li cov xov hlau. Nyob rau hauv cov nqe lus ntawm cov tsos, tooj dag yog daj, thaum ntshiab tooj liab yog reddish -liab.
5. Lub thickness ntawm phab ntsa ntawm cov yeeb nkab dej, qhov zoo dua qhov compression tsis kam?
Lub compression tsis kam ntawm cov yeeb nkab dej yog qhov tseeb ze ze rau lub thickness ntawm cov yeeb nkab phab ntsa. Yog tias cov khoom siv tib yam los yog cov khoom siv zoo sib xws siv, qhov tuab ntawm phab ntsa tuab, qhov muaj zog ntawm compression kuj.
SDR coefficient ntawm cov yeeb nkab, uas txhais tau hais tias tus qauv loj piv, yog qhov sib piv ntawm nominal txheej kab ntawm cov yeeb nkab thiab lub nominal phab ntsa thickness, thiab yog ib qho tseem ceeb parameter uas txiav txim siab lub peev xwm ntawm cov yeeb nkab los tiv thaiv sab hauv siab.
Nws raug nquahu kom siv SDR6 qib kav dej thaum kho kom zoo nkauj, uas yog, phab ntsa tuab ntawm 6 cov kav dej yog 4.2mm tus qauv, thiab phab ntsa tuab ntawm 4 kav dej yog 3.4mm tus qauv. Txawm li cas los xij, qhov compression tsis kam ntawm cov khoom siv sib txawv tsis tuaj yeem txiav txim siab los ntawm phab ntsa tuab, thiab cov yam ntxwv ntawm cov khoom siv raw lawv tus kheej yuav tsum tau txiav txim siab.