Rail Pad Material Classification thiab Application Technology
Dab tsi yog qhov tseem ceeb ntawm kev ua haujlwm sib txawv ntawm cov tsheb ciav hlau ntawm cov khoom sib txawv?
Rubber pads yog tsim los ntawm cov roj hmab ntuj lossis hluavtaws roj hmab, nrog rau tus nqi qis thiab zoo elasticity, uas tuaj yeem nqus tau zoo thiab siv dav hauv cov pa tsheb ciav hlau thiab tsheb ciav hlau hauv nroog. Polyurethane pads muaj ob qho tib si elasticity thiab siab zog, thiab lawv cov hnav tsis kam yog ntau tshaj 30% siab dua li cov roj hmab pads, haum rau siab - zaus thiab hnyav- load scenarios xws li hnyav - tsheb ciav hlau thiab siab - kev tsheb ciav hlau ceev. EVA ncoo yog ua los ntawm ethylene-vinyl acetate copolymer, nrog zoo elasticity, yooj thiab rwb thaiv tsev. Lawv cov rwb thaiv tsev tiv thaiv tuaj yeem ncav cuag ≥1 × 10¹⁰Ω, haum rau kev tsheb ciav hlau hauv nroog, txuas hniav thiab qhov av thiab lwm qhov chaw uas xav tau siab rau kev poob siab thiab rwb thaiv tsev. Composite pads muab qhov zoo ntawm ntau yam ntaub ntawv xws li roj hmab, yas thiab fiber ntau. Cov roj hmab txheej muab elastic buffer, thiab cov fiber reinforcement txheej txhim kho cov kabmob muaj peev xwm, yoog rau cov chaw tshwj xeeb xws li txuas hniav thiab qhov. Qhov kev ua tau zoo sib txawv ntawm cov ntaub qhwv ntawm cov khoom sib txawv txiav txim siab lawv cov kab mob siv tau.
Dab tsi yog qhov kev sib raug zoo ntawm kev faib ua haujlwm ntawm cov tsheb ciav hlau thiab daim ntawv thov scenarios?
Kev poob siab zoo ib yam-cov ntaub qhwv lub ntsej muag tsom rau ntawm qhov yooj yim kev poob siab ua haujlwm, nrog rau qhov zoo li qub ntawm 20-60kN/mm, haum rau cov kab uas yuav tsum muaj rau kev tswj lub suab nrov thiab kev co xws li kev tsheb ciav hlau sab hauv ntawm cov chaw tsim khoom thiab cov mines. Insulating pads ntxiv cov ntaub ntawv insulating xws li iav fiber ntau thiab epoxy resin, nrog cov rwb thaiv tsev tiv thaiv ntawm ≥10⁹Ω, siv nyob rau hauv cov cheeb tsam hauv cheeb tsam los tiv thaiv tam sim no los ntawm kev cuam tshuam cov teeb liab kis tau tus mob. Kev hloov kho qhov siab muaj ntau yam thickness specifications los ntawm 1-30mm, feem ntau yog ua los ntawm polyethylene los yog nylon, siv los kho qhov siab ntawm cov ntsia hlau thaum lub sij hawm khiav kev tsim kho thiab tu, thiab yuav tsum superimposed nrog zoo tib yam pads kom ua tau raws li theem. Cov roj hmab txuas txuas ntxiv muaj cov grooves rau ntawm qhov chaw, uas tuaj yeem ua kom muaj kev sib raug zoo nrog lub hauv paus kev tsheb nqaj hlau thiab txo qis hnav, dav siv hauv kev lag luam xws li chaw nres nkoj thiab chaw nres nkoj. Cov khoom siv roj hmab tsis tu ncua tau hloov kho raws li cov kev xav tau tshwj xeeb thiab ua kom ruaj khov hauv cov khoom siv hnyav xws li cov nroj tsuag steel thiab cov nroj tsuag cement.
Dab tsi yog qhov zoo ntawm cov qauv tsim ntawm kev sib xyaw rail pads?
THRAIL elastic composite ncoo txais cov qauv ntawm ob txheej roj hmab nrog 0.5-0.7mm siab- zoo steel phaj embedded nyob rau hauv nruab nrab, uas yog tsim los ntawm kub kua nplaum compounding, nrog ib tug tsim nyog qauv thiab siab lateral stiffness. Tus ntoo khaub lig- ntu ntawm lub ncoo yog me ntsis convex nyob rau hauv nruab nrab, yog li lub zog sib xws. Cov duab plaub me me rau ntawm qhov chaw yog yooj yim rau deform, uas tsis tsuas yog yooj yim rau kev sib cuag nrog tus khiav, tab sis kuj txhim kho elasticity thiab poob siab absorbing nyhuv. Cov grooves duab plaub yog teem rau ntawm tus ntoo khaub lig-sectional kev taw qhia ntawm lub ncoo kom txo tau tag nrho cov lateral deformation tom qab kev ntxhov siab thiab txo qhov kev puas tsuaj rau cov roj hmab nto los ntawm extrusion. Qhov dav ntawm cov hlau phaj yog nyob rau hauv ib qho kev faib ua feem rau qhov dav ntawm lub ncoo, uas tsis tsuas yog txhim kho qhov tawv nqaij tab sis kuj pab txhawb curling thiab kev thauj mus los, nrog rau kev siv kub ntawm -20℃-80℃. Nws tseem ua tau zoo tom qab 2 lab qhov kev ua haujlwm qaug zog, thiab tsis yooj yim rau kev puas tsuaj txawm tias tom qab siv mus ntev, hloov mus rau cov xwm txheej siab thiab hnyav.
Dab tsi yog cov txheej txheem tseem ceeb rau kev teeb tsa thiab siv cov ntaub thaiv kev tsheb ciav hlau?
Qhov dav ntawm cov ntaub ntawv sib xyaw yog 4-5mm me dua qhov dav ntawm txoj kab tsheb ciav hlau. Tom qab kev teeb tsa, los ntawm kev ua ntej - compression quab yuam ntawm txoj kev nias lub phaj, nws tuaj yeem nyob ze rau ntawm txoj kev tsheb ciav hlau thiab qhov chaw txhawb nqa kom ua rau qhov tsis sib xws ntawm qhov chaw txhawb nqa. Ua ntej installation, nws yog ib qho tsim nyog los xyuas qhov elasticity thiab kev ncaj ncees ntawm lub ncoo. Cov ntaub qhwv roj hmab yuav tsum tsis txhob raug tshav ntuj ncaj qha thiab qhov kub thiab txias kom tiv thaiv kev laus thiab tsis ua haujlwm. Thaum txhim kho cov ntaub qhwv insulating, nws yog ib qho tsim nyog los xyuas kom meej tias lawv phim lub qhov ntawm lub tes tsho insulating kom tsis txhob muaj kev cuam tshuam rau cov rwb thaiv tsev. Lub rwb thaiv tsev tiv thaiv nyob rau hauv ntub dej yuav tsum tsis txhob tsawg tshaj li 5kΩ. Thaum lub sij hawm installation, nws yog ib qhov tsim nyog los ntxuav cov khoom txawv teb chaws nyob rau hauv lub ncoo, xws li gravel thiab gasket residues, tiv thaiv txoj kev tsheb ciav hlau txoj kab nqes los ntawm kev hloov. Thaum siv, nws yog ib qho tsim nyog yuav tsum tsis tu ncua xyuas qhov hnav thiab deformation ntawm lub ncoo, thiab hloov nws nyob rau hauv lub sij hawm yog tias muaj kev laus los yog kev puas tsuaj los xyuas kom meej qhov poob siab absorbs thiab stability kev ua tau zoo.
Yuav ua li cas xaiv cov tsheb ciav hlau tsim nyog hauv qhov chaw huab cua?
Nyob rau hauv qhov chaw siab - qhov kub thiab txias, siab - cov roj hmab pads los yog cov ntaub ntawv sib xyaw nrog cov cua sov- cov khoom tiv thaiv yuav tsum raug xaiv kom tsis txhob muag muag thiab deformation los ntawm qhov kub thiab txias. Nyob rau hauv qis - qhov kub thiab txias ib puag ncig, qis- kub resistant roj hmab los yog polyurethane pads yuav tsum tau nyiam los xyuas kom meej elasticity zoo hauv qab no -25℃tsis nkig puas. Qhov chaw ntub dej thiab ntug hiav txwv yuav tsum tau siv los tiv thaiv{10}}corrosion composite pads lossis ceramic pads los tiv thaiv xeb thiab yaig. Cov suab puam ib puag ncig xav tau cov ntaub qhwv nrog zoo sealing thiab hnav tsis kam, ua kom zoo sib xws nrog cov plua plav muaj zog{12}} pov thawj kev ua haujlwm. Rau cov chaw lag luam uas muaj cov pa phem, cov roj hmab roj hmab yuav tsum raug xaiv kom tsis txhob muaj kev puas tsuaj los ntawm cov roj erosion.