Yog vim li cas ductile hlau manhole npog excel nyob rau hauv load-cov kabmob muaj peev xwm, tiv thaiv- tub sab, thiab kav ntev, ua rau lawv qhov kev xaiv zoo tshaj plaws rau txoj kev loj hauv nroog, txoj kev loj, thiab hnyav- daim ntawv thov kev ua haujlwm, feem ntau yog nyob rau hauv ob qhov zoo ntawm spheroidal graphiteduct microstructure } ntau yam {-} qauv tsim.
I. Load-cov kabmob muaj peev xwm: Rolling- qib zog, txhawj xeeb-dawb hauv qab hnyav
Cov khoom siv zog siab tshaj plaws
Siv cov qib xws li QT500-7, lub zog tensile ntau dua los yog sib npaug ntawm 500MPa, thiab qhov elongation yog ntau dua los yog sib npaug li 7%, uas yog 2-3 npaug ntawm cov hlau cam khwb cia zoo tib yam, nrog rau qhov toughness mus txog ntawm cov hlau. Nws tsis yooj yim tawg thaum muaj kev cuam tshuam, tsuas yog me ntsis deformed, txo qhov kev pheej hmoo ntawm "manhole cover exploding."
Sab saum toj -tier load peev
Mus txog EN124 tus qauv D400 qib (40-tuj qag load), thiab txawm F900 qib (90 tons), yooj yim tiv taus lub sij hawm ntev ntawm cov tsheb loj, tsheb npav, thiab tsheb tua hluav taws.
Anti- qaug zog thiab tiv thaiv- daws teeb meem
Deformation tus nqi<0.3% after millions of compaction tests; combined with anti-settlement structure, road surface settlement rate is reduced by 90%, preventing warping and subsidence over long-term use.
II. Anti- tub sab: Triple tiv thaiv, nyuaj rau nyiag thiab rub
Kev tiv thaiv lub cev - tub sab: Qhov hnyav + kev kaw haujlwm
Ib lub hau hnyav hnyav 80-150kg, nyuaj txav manually; ua-hauv kev tiv thaiv- tub sab pob khawm + tiv thaiv pry buckle, qhib lub kaum sab xis<5°, impossible to pry with ordinary tools.
Mechanical anti- tub sab: Cov xauv tshwj xeeb
Cov txheej txheem kev teeb tsa suav nrog peb -lub caij nplooj ntoos hlav ntsuas phoo, sib nqus zais qhov ntsuas phoo, thiab tiv thaiv- cov tub sab tub nyiag, xav tau cov cuab yeej tshwj xeeb qhib, siv sijhawm li 15 feeb kom tawg.
Anti- tshem tawm qhov kev txhawb nqa
Lub manhole npog yog nruab nrog av thauj tog rau nkoj bolts, nrees txuas nrog txoj kev nto, tiv thaiv kev txav thiab ntxiv qhov nyuaj ntawm tub sab.
III. Durability: Ultra-ntev lifespan, tsis tshua muaj txij nkawm
Corrosion resistant, ntev lifespan
Raws li corrosion resistant, txhua xyoo corrosion tsawg dua los yog sib npaug rau 0.1mm, 1/5-1/8 ntawm grey cam khwb cia hlau; Tom qab qhov chaw asphalt / galvanizing kev kho mob, nws tuaj yeem nyob ruaj khov hauv qhov chaw ntsev tsuag rau ntau tshaj 480 teev.
Muaj zog tiv taus huab cua
Haum rau qhov kub ntawm -40℃mus rau 60 degree, nws tsis tawg ntawm qhov kub thiab txias los yog deform ntawm qhov kub thiab txias, haum rau kev nyab xeeb thoob tebchaws.
Hnav thiab puas resistant
Brinell hardness 140–240HBW, nto textured rau plam tsis kam thiab hnav tsis kam, tsis yooj yim hnav los yog chipped nyob rau hauv ntev -lub sij hawm siab.
Nyob ntsiag to thiab suab nrov -txo
Roj hmab strips embedded nyob rau hauv lub manhole npog txo lub tsheb suab nrov kom tsawg tshaj li los yog sib npaug zos rau 55dB, tshem tawm "clunking" suab nrov thiab txhim kho kev nplij siab hauv nroog.
IV. Kev sib piv nrog lwm cov ntaub ntawv
| Kev ua tau zoo | Cam khwb cia hlau | Grey Cam khwb cia hlau | Composite / Resin | Qhob Manhole Cover |
| Load-cov kabmob muaj peev xwm | Siab heev (D400+) | Nruab nrab (B125) | Tsawg (A15 / B125) | Nruab nrab -Low |
| Toughness | Siab (Elongation Ntau dua lossis sib npaug li 7%) | Tsawg heev (≈0) | Nruab nrab | Tsawg heev (High Brittleness) |
| Kev Pabcuam Lub Neej | 20-50 xyoo | 5-10 xyoo | 5–8 xyoo | 3-5 xyoos |
| Anti- tub sab nyiag | Muaj zog heev (Xauv + Luj + Qauv) | Tsis muaj zog | Tsis muaj zog (tsis muaj nqi rov ua dua) | Tsis muaj zog |
| Tus nqi kho mob | Tsawg heev | Siab | Siab | Siab heev |