Taug qab Pad Cov Khoom Xaiv thiab Kev Hloov Ib puag ncig
Dab tsi yog cov khoom siv hauv qab -rail pads thiab lawv cov yam ntxwv tseem ceeb?
Cov ntaub ntawv muaj xws li cov roj hmab ntuj, styrene-butadiene roj hmab (SBR), siab- ntom polyethylene (HDPE), thiab roj hmab- cov ntaub ntawv yas sib xyaw. Ntuj roj hmab pads muaj elasticity zoo nrog ib tug elastic modulus ntawm 1.5-2.0MPa, cushioning ua tau zoo heev, thiab muaj peev xwm nqus tau siab - zaus vibrations. SBR pads ntxiv SBR rau cov roj hmab ntuj, nrog kev laus tiv thaiv kev txhim kho los ntawm 30% thiab elastic modulus ntawm 1.8-2.2MPa. HDPE yas ncoo muaj siab rigidity nrog elastic modulus ntawm 80-100MPa, thiab zoo heev hnav thiab corrosion kuj. Rubber-yas composite pads muab qhov zoo ntawm ob qho tib si, nrog cov roj hmab saum npoo txheej rau cushioning thiab HDPE hauv qab txheej rau hnav tsis kam, ntsuas kev ua tau zoo thiab kav ntev.
Qhov twg hauv qab -rail ncoo yuav tsum nyiam nyob rau hauv siab - qhov kub thiab txias thiab vim li cas?
Nyob rau hauv siab - ib puag ncig kub, HDPE yas ncoo los yog hloov SBR ncoo yuav tsum nyiam dua. Qhov kub thiab txias yuav ua rau kom muaj kev laus ntawm cov roj hmab ntuj thiab ua rau nws lub neej ua haujlwm luv, thaum HDPE cov khoom muaj zog siab - kub stability thiab tsis yooj yim rau deform. Hloov kho SBR tau txhim kho kev laus ua haujlwm ntawm qhov kub thiab txias los ntawm kev hloov kho mis kom tsis txhob muag muag. Nyob rau hauv qhov kub thiab txias, lub ncoo yuav tsum muaj qhov ruaj khov elastic modulus, uas HDPE thiab hloov kho SBR tuaj yeem ntsib. Nyob rau tib lub sijhawm, lawv cov hnav tsis kam yog tsis cuam tshuam rau qhov kub thiab txias, uas tuaj yeem txo qhov kev saib xyuas zaus thiab xyuas kom muaj kev ruaj ntseg.
Dab tsi yog cov cai tseem ceeb rau kev xaiv hauv qab - tsheb ciav hlau pads hauv qis- qhov chaw kub (tsawg dua lossis sib npaug li -20 degree)?
Hauv qhov qis- qhov kub thiab txias, qhov qis- qhov kub thiab txias ntawm lub ncoo yuav tsum tau ua ntej kom tsis txhob muaj qhov tawg. Rau cov ntaub ntawv, qis -kub resistant SBR (ntxiv nrog antifreeze) los yog neoprene yuav tsum tau xaiv, nrog ib tug nkig kub tsawg dua los yog sib npaug rau -40℃. Cov ntaub ntawv no tseem tuaj yeem tswj tau qhov elasticity ntawm qhov kub thiab txias, nrog rau kev hloov pauv ntawm elastic modulus tsis pub ntau tshaj 20%, ua kom cov nyhuv cushioning. Raws li kev tsim qauv, kev tiv thaiv kev sib tsoo nrog cov grooves yuav tsum tau txais kev pom zoo los tiv thaiv cov txheeb ze zawv zawg ntawm lub ncoo thiab pw tsaug zog / ntsia ntawm qhov kub thiab txias, thiab tus nqi zawv zawg yuav tsum tau tswj nyob rau hauv qhov kev tso cai. Kev saib xyuas yuav tsum tau them rau qhov kev laus ua haujlwm ntawm qhov kub thiab txias kom tsis txhob muaj cov khoom siv embrittlement thiab tsis ua haujlwm, ua kom muaj kev nyab xeeb ntawm kab.
Vim li cas cov roj hmab ntuj nyob rau hauv -rail pads feem ntau yog siv rau siab - kev tsheb ciav hlau ceev?
High - txoj kev tsheb ciav hlau ceev muaj qhov xav tau siab heev rau cushioning thiab txo kev co. Cov khoom siv roj hmab ntuj muaj qhov zoo tshaj plaws elasticity thiab cushioning kev ua tau zoo, uas tuaj yeem nqus tau siab - zaus vibrations tsim los ntawm kev ua haujlwm siab -. Siab - zaus vibrations yuav cuam tshuam rau kev caij tsheb thiab taug qab lub neej, thiab elastic modulus ntawm ntuj roj hmab yog haum rau siab -ces scenarios. Kev khiav hauj lwm ib puag ncig ntawm siab - kev tsheb ciav hlau ceev yog qhov ruaj khov nrog qhov ntsuas kub me me, uas tuaj yeem txo qhov cuam tshuam ntawm kev laus tsis txaus ntawm cov roj hmab ntuj. Cov roj hmab ntuj tuaj yeem hloov kho sai sai rau lub xeev kev ntxhov siab tom qab kev teeb tsa thiab tswj kom muaj kev txhawb nqa ruaj khov. Lawv qhov haum zoo tuaj yeem txo qhov sib txawv ntawm txoj kev tsheb ciav hlau thiab lub ncoo, txhim kho txoj kev du, thiab ua tau raws li cov kev xav tau ntawm kev ua haujlwm siab -.
Dab tsi ua haujlwm yuav tsum tau tsom mus rau thaum xaiv hauv qab -rail pads rau cov kab thauj khoom tshwj xeeb?
Rau cov khoom thauj khoom tshwj xeeb, hnav tsis kam yuav tsum tau ua ntej. Cov tsheb ciav hlau thauj khoom muaj cov khoom thauj loj, lub log muaj zog- kev tsheb ciav hlau, thiab cov ntaub qhwv ceev ceev. HDPE pads nrog zoo hnav tsis kam yog qhov kev xaiv zoo tshaj plaws rau cov khoom thauj khoom tshwj xeeb. Lawv yuav tsum muaj peev xwm muaj peev xwm tiv taus lub siab loj los ntawm cov khoom hnyav thiab tsis txhob deformation. Corrosion kuj tseem ceeb heev. Kev thauj khoom tshwj xeeb yuav dhau los ntawm qhov chaw muaj plua plav thiab ntub dej, thiab cov ntaub qhwv yuav tsum tiv thaiv corrosion. Kev ruaj ntseg yog qhov tseem ceeb, thiab nws yog ib qho tsim nyog yuav tsum muaj kev ruaj ntseg elastic modulus nyob rau hauv ntev - lub sij hawm hnyav loads yam tsis tas deformation. Kev pabcuam lub neej yuav tsum tau xav txog. Xaiv cov khoom siv ruaj khov tuaj yeem txo qhov hloov zaus thiab txo tus nqi kho.