Vim li cas EVA / HDPE / Roj Hmab siv los tsim Rail Pads?

Ib feem, peb tsev neeg cov khoom

Lub tsheb ciav hlau yuav tsum nyob twj ywm hauv qab ntau lab lub log hla, tiv thaiv kev puas tsuaj, muaj sia nyob huab cua thiab - ntawm cov kab teeb liab - insulate lub tsheb ciav hlau los ntawm tus neeg pw tsaug zog. Cov polymers sib txawv daws qhov sib txawv ntawm qhov teeb meem no, uas yog vim li cas EVA, HDPE thiab roj hmab tag nrho muaj nyob rau hauv cov khoom siv rail pads, txhua qhov sib tw rau ib lub luag haujlwm tshwj xeeb.

EVA: tus nqi -hnyav damper

Ethylene-vinyl acetate (EVA) yog lub teeb yuag, kaw-cell polymer nrog zoo damping ntawm qis mus rau nruab nrab nruj. Nws yog pheej yig, yooj yim rau pwm, thiab ua tau zoo ntawm lub teeb- txoj haujlwm khiav, kev vibration- cov kab rhiab heev thiab cov kab ib ntus uas lub ncoo hloov ntau zaus. Nws qhov kev txwv yog tias nws softens ntau nrog kub thiab hnav sai dua nyob rau hauv hnyav qag loads, yog li nws tsis yog thawj qhov kev xaiv rau hnyav thauj.

HDPE: hnav-cov neeg ua haujlwm tiv taus

High-density polyethylene (HDPE) muaj kev puas tsuaj siab thiab nqus dej tsawg heev, yog li nws nyob ruaj khov nyob rau hauv ntub ballast thiab dej nyab txiav. Cov ntaub qhwv ua los ntawm HDPE raug xaiv qhov chaw hnav thiab dej yog cov yeeb ncuab tseem ceeb: qhov chaw ua kom zoo nkauj, ballast- lawj txuas hniav thiab qis- kev tu vaj tse. HDPE yog nruj dua li cov roj hmab, uas haum rau kev ruaj ntseg tab sis muab kev vibration tsawg dua.

Roj Hmab: tag nrho - cov ntaub ntawv tseem ceeb

Cov roj hmab ntuj (NR) thiab cov roj hmab hluavtaws xws li SBR thiab EPDM sib xyaw ua haujlwm siab, damping zoo heev thiab kev pabcuam kub ntau. Rubber pads nqus cov dynamic rog uas tawg cov neeg pw tsaug zog thiab loosen fastenings, thiab lawv rov qab lawv cov duab tom qab txhua qhov load. Yog vim li cas cov roj hmab tebchaw tswj hwm lub hauv paus fastening systems, turnouts thiab hnyav - txoj kev thauj. Compounding - ntxiv carbon dub, antioxidants thiab crosslinking agents - tunes hardness thiab stiffness rau fastening system pom zoo.

Yuav ua li cas qhov kev xaiv tiag tiag

Pib los ntawm qhov kev pom zoo ntawm lub fastening system: lub rooj sib txoos pom zoo txhais cov khoom siv ntaub qhwv, tawv thiab tuab.

Rau lub hauv paus loj thiab hnyav hnyav, xaiv cov roj hmab sib xyaw nrog cov txheej txheem hardness thiab dynamic rigidity.

Rau cov ntub dej, abrasive lossis qis-kev kho kev lag luam, HDPE yog tus neeg sib tw muaj zog.

Rau lub luag haujlwm lub teeb, kev taug qab ib ntus thiab tus nqi- cov haujlwm tseem ceeb, EVA muab kev ua haujlwm txaus ntawm tus nqi qis.

Rau cov kab teeb liab, txheeb xyuas qhov kev tiv thaiv hluav taws xob ntawm cov khoom siv xaiv.

Cov lus nug uas nquag nug

Yam khoom twg yog qhov zoo tshaj plaws rau kev tsheb ciav hlau?

Tsis muaj ib qho khoom zoo tshaj plaws; cov lus teb yog nyob ntawm lub qag load, ceev, kev nyab xeeb thiab kev pom zoo ntawm qhov system fastening. Roj hmab yog tus qauv rau mainlines, HDPE rau ntub abrasive qhov chaw, EVA rau lub teeb lub luag hauj lwm.

EVA pads puas tuaj yeem siv rau ntawm lub hauv paus?

EVA feem ntau yog siv rau lub teeb thiab nruab nrab lub luag haujlwm. Mainline fastening systems ib txwm qhia cov roj hmab lossis TPEE cov ntaub qhwv kom ruaj khov nyob rau hauv qhov kub thiab txias.

Vim li cas cov ntaub qhwv roj hmab siv tau ntev dua li ua npuas ncauj - hom ntaub qhwv?

Roj Hmab yog ib qho crosslinked elastomer uas rov qab zoo tom qab thauj khoom; foam-type and low-density EVA materials take a compression set faster under repeated heavy loads.

Cov ntaub ntawv pad puas cuam tshuam rau kev ua haujlwm hauv Circuit Court?

Yog lawm. Lub ncoo yog ib feem ntawm kev rwb thaiv tsev ntawm kev tsheb ciav hlau thiab pw tsaug zog. Kev xaiv sib xyaw thiab qhov chaw saum npoo txiav txim siab qhov rwb thaiv tsev tsis kam; puas los yog conductive pads tuaj yeem cuam tshuam kev nyeem Circuit Court.

Puas yog lub ncoo nyuaj ib txwm zoo dua rau kev ntsuas kev ruaj ntseg?

Tsis yog. Ib lub ncoo nyuaj ua rau kev nruj dua ntsug tab sis xa ntau dua kev co thiab cuam tshuam rau tus neeg pw tsaug zog. Lub fastening system pom zoo sib npaug stability thiab damping, yog li ua raws li cov txheej txheem hardness es maximizing nws.