Ib lub tsheb ciav hlau (tseem hu ua ib qho hauv qab -rail pad lossis rail roj hmab phaj) nyob nruab nrab ntawm lub tsheb ciav hlau ko taw thiab lub txaj pw lossis khi phaj. Nws softens tus khiav vertically, kis log loads tshaj lub sleeper saum, damps vibration thiab suab nrov, thiab nyob rau hauv electrified los yog signaled kab muab hluav taws xob rwb thaiv tsev rau khiav circuits. Cov dej noo yog qhov xav tau tshaj plaws ntawm kev ua haujlwm rau lub ncoo: cov khoom yuav tsum khaws nws cov elasticity thiab qhov ntev rau xyoo thaum hloov pauv ntub, khov, nias thiab thauj khoom nrog de- cov tshuaj icing. Kab lus no hais txog yuav ua li cas dej tawm tsam cov ntaub qhwv, yuav ua li cas los sib piv cov ntaub ntawv, thiab qhov tshwj xeeb qhov tseem ceeb ntawm cov dej ntub dej.
1. Yuav ua li cas Moisture Damages Rail Pads
Kev nqus dej: cov ntaub so ntswg uas nqus dej kom tsis txhob khov thiab nce qhov hnyav; absorbed dej khov rau lub caij ntuj no thiab tawg lub ncoo sab hauv.
Hydrolysis: ester-raws li polyurethane thiab qee cov roj hmab sib txuas tau tawg los ntawm kev sib cuag dej ntev ntev, tig lub ncoo mos thiab nplaum los yog tawv thiab nkig.
Tshuaj tua kab mob: de-icing ntsev, roj diesel thiab cov kab mob ballast ua rau cov laus thiab degradation.
Cov dej khib nyiab: ib lub ncoo uas tso dej tawm ntawm lub rooj zaum pw tsaug zog ua rau lub rooj zaum hauv tsheb ciav hlau ntub, uas ua rau lub rooj zaum tsheb ciav hlau (RSD) thiab corrosion ntawm phaj thiab fasteners.
2. Cov khoom sib piv rau kev pabcuam ntub dej
| Khoom siv | Kev coj cwj pwm dej | Qhov kub thiab txias | Hom kev siv |
| Ntuj / SBR roj hmab | Kev nqus nruab nrab; hardens nrog hnub nyoog | -30 txog 70 ° C | General khiav, qhuav cheeb tsam |
| EPDM | Kev nqus tsawg heev; zoo heev ozone thiab UV tsis kam | -50 rau 70 ° C | Moist khiav, tunnels, sab nraum zoov raug |
| TPE | Tsawg nqus; siab zog thiab qaug zog lub neej | -50 rau 70 ° C | Siab- nrawm thiab hnyav- cov ntaub pua tsev |
| HDPE | Kev nqus tsis zoo; siab tawv, siab rwb thaiv tsev | -50 rau 70 ° C | Rwb thaiv tsev- qhov chaw tseem ceeb |
| Ether{0}} hom polyurethane | Zoo hydrolysis tsis kam (ether qaum) | -40 txog 80 ° C | Damping-cov qauv tsim |
Rau qhov chaw ntub dej tas mus li, EPDM lossis TPEE formulations yog lub neej ntawd kev nyab xeeb; qhia qhov ntsuas kub hauv degrees C, piv txwv li -50 txog 70 degrees C, tsis yog cov ntawv sau ua haujlwm tsis meej.
3. Specification Parameters uas tseem ceeb
Static stiffness: matched rau qag load thiab ceev. Softer pads txo dynamic rog tab sis tso cai rau ntau txoj kev sib hloov; pads stiffer tiv thaiv lub tsheb ciav hlau lub rooj ntawm hnyav -cov kab.
Dynamic stiffness ratio: qhov piv ntawm dynamic rau static stiffness qhia damping; qhov qis piv txhais tau tias zoo dua kev sib cais.
Cov txheej txheem compression: tsis tshua muaj deformation ua rau lub ncoo txhawb nqa txoj kev tsheb nqaj hlau tom qab xyoo ntawm kev thauj mus los.
Rwb thaiv tsev tsis kam: rau cov kab hluav taws xob khiav, cov ntaub qhwv tau teev nrog cov rwb thaiv tsev qhuav nyob rau hauv qhov kev txiav txim ntawm 10 mus rau 9 mus rau 10 mus rau 10 ohm, sim ib qho fastening -system hluav taws xob xeem txoj kev.
Dimensional kam rau ua: lub ncoo thickness thiab flatness kam rau ua, xws li ntxiv los yog rho tawm 0.5 hli, kom clamping quab yuam txawm hla lub rooj zaum rail.
4. Kev xaiv thiab kev teeb tsa ntawm Moist Track
Xaiv tsev neeg cov khoom ua ntej (EPDM lossis TPEE rau cov kab ntub dej), tom qab ntawd paub meej tias cov chav kawm nruj tiv thaiv cov kab tsheb ciav hlau, hom pw tsaug zog thiab tsheb khiav. Thaum lub sij hawm installation, xyuas kom meej lub rooj zaum pw tsaug zog yog huv si thiab drained; ribbed lossis grooved pad qhov chaw pab dej khiav tawm sab nraud es tsis txhob raug daig hauv qab txoj kev tsheb ciav hlau. Tighteners rau lub torque uas tau teev tseg kom lub ncoo yog preloaded tusyees, thiab teem caij tshuaj ntsuam thawj zaug tom qab lub caij ntub dej: nrhiav ntug cracking, mus tas li indentation thiab cov cim ntawm cov dej daig ntawm lub rooj zaum rail. Hloov cov ntaub qhwv uas tau tawv, tawg lossis poob lawv qhov qub thickness profile, txij li lub ncoo hloov pauv cuam tshuam ncaj qha rau tus neeg pw tsaug zog.
5. Cov cai cia rau Pads
Cov ntaub qhwv yuav tsum muab khaws cia rau hauv qhov chaw huv, qhov cua, kom deb ntawm tshav ntuj ncaj qha, qhov chaw tshav kub thiab tshuaj reagents. Lawv yuav tsum tsis txhob tiv tauj cov roj, cov kuab tshuaj organic lossis lwm yam tshuaj, thiab raug rau ozone - cov khoom siv xws li lub tshuab hluav taws xob yuav tsum zam rau cov roj hmab - raws li cov ntaub qhwv. Hauv cov huab cua ntub, khaws cov ntaub qhwv rau ntawm cov pallets nrog cov cua ncig es tsis yog kaw rau ntawm cov pob zeb.
FAQ
Q1: Puas yog EPDM ib txwm zoo dua li cov roj hmab ntuj rau txoj kev ntub dej?
Rau lub sijhawm ntev - dej thiab UV raug, EPDM yog qhov kev xaiv nyab xeeb dua vim nws nqus dej tsawg heev thiab ua haujlwm zoo ozone. Cov roj hmab ntuj muab kev tiv thaiv siab qhov chaw raug dej tsawg, tab sis nws muaj hnub nyoog sai dua hauv qhov chaw ntub dej, tshav ntuj.
Q2: Puas rail pads tseem muab hluav taws xob rwb thaiv tsev?
Yog lawm. Hauv qab -rail pads yog ib qho tseem ceeb ntawm cov rwb thaiv tsev ntawm lub fastening system ntawm electrified thiab signaled khiav, ua ke nrog lub xub pwg nyom, dowels thiab insulating bushes. Lub ncoo rwb thaiv tsev tsis kam yog ib feem ntawm kev ntsuas hluav taws xob fastening system.
Q3: Qhov kub thiab txias npaum li cas kuv yuav tsum tau qhia rau qhov pads?
Rau qhov av thiab txias- kev pabcuam huab cua, qhia lub ncoo rau -50 txog 70 degrees C. Qhov qis kawg tiv thaiv Frost embrittlement thiab siab kawg tiv thaiv tshav kub tsim nyob rau hauv lub caij ntuj sov loads.
Q4: Kuv yuav ua li cas thiaj paub tias lub ncoo tau ua tsis tiav ntawm txoj kab ntub dej?
Cov paib pom pom yog ntug tawg, cov txheej txheem compression tas li (lub ncoo tsis rov qab los rau tuab), tawv tawv, thiab dej staining ntawm lub rooj tsav tsheb. Functionally, xoob fasteners thiab nce tsheb ciav hlau lub rooj abrasion qhia tias lub ncoo tsis txhawb txoj kev tsheb ciav hlau raug lawm.
Q5: Puas tuaj yeem siv tib lub ncoo rau 43, 50 thiab 60 kg / m rail?
Tsis yog. Pad qhov ntev, nrog rau qhov ntev, qhov dav, tuab thiab khi- phaj interface, yog sib phim rau txoj kab tsheb ciav hlau dav dav thiab lub kaw lus fastening. Cov qauv tsim qauv xws li 43-7-7, 50-10-9 thiab 60-10-17 encode lub rail seem, thickness thiab qhov configuration.
Q6: Yuav ua li cas noo noo cuam tshuam cov kab hluav taws xob los ntawm lub ncoo?
Cov ntaub ntub dej ntub dej tuaj yeem tsim cov kev xau uas txo cov rwb thaiv tsev tiv thaiv ntawm kev tsheb ciav hlau thiab cov neeg pw tsaug zog, ua rau cov kab hluav taws xob tsis muaj zog. Qhov no yog vim li cas qhov chaw ntub dej yuav tsum tau cov ntaub qhwv nrog cov rwb thaiv tsev siab thiab yog vim li cas lub ncoo saum npoo yuav tsum tsis txhob ntxiab dej tawm tsam lub rooj tsav tsheb.