Daim ntawv thov kev sib tsoo log hauv kev tsheb ciav hlau

Txoj kev tsheb ciav hlau ua lub luag haujlwm ntawm kev coj lub tsheb thiab xa cov khoom thauj mus rau subgrade. Tom qab qhov kev kub ceev thiab kev ua haujlwm hnyav tau muab tso rau hauv kev ua haujlwm, ntau yam kev raug mob ntawm cov tsheb ciav hlau tau tshwm sim, xws li corrugation hnav ntawm rail, abrasion ntawm rail nto, sawb ntawm kev tsheb ciav hlau nto, hnyav hnyav ntawm kev tsheb nqaj hlau sab, tawg thiab tsoo ntawm kev tsheb nqaj hlau. lub taub hau, thiab lwm yam. Thiab txoj kev loj hlob sai, uas cuam tshuam rau kev thauj mus los ntawm kev tsheb ciav hlau muaj peev xwm thiab cov txiaj ntsig kev lag luam.

Ballast khiav yog pob zeb lossis asphalt mortar los hloov cov pob zeb xoob thiab tsim los ntawm cov qauv kev sib tw, nws muaj cov yam ntxwv ntawm kev ua haujlwm siab ruaj khov, zoo nruj nruj, muaj zog qauv durability thiab tsis tshua muaj txij nkawm ua hauj lwm, rau high-ceev railway muaj ib tug zoo adaptability tshaj lub tsoos ballast khiav. Ntawm cov slab yam tsis muaj kev tshawb fawb txog kev sib tw khiav hauv Suav teb yog ua tiav nrog rau kev txuas ntxiv mus tob rau hauv kev tshawb fawb ntawm kev kub ceev railway, high-speed railway track phaj tsis yog cov khoom siv pob zeb zoo tib yam, vim qhov nyuaj ntawm cov phaj siv hauv cov pob zeb. thiab cov phaj loj yog qhov nruj, yuav tsum xyuas kom meej tias kev txhawb nqa kev sib tsoo tshuab precision steel erection yuam kev yog tsawg dua 0.3 hli. Yog li ntawd, cov kev xav tau siab tau muab tso rau pem hauv ntej rau cov cuab yeej tsim khoom lag luam.

Cov qauv thiab tsim khoom tshwj xeeb kev sib tsoo log rau kev khiav phaj ua:

Rau kev ua haujlwm ntawm kev kub ceev tsheb ciav hlau Borg khiav phaj, feem ntau ntawm cov khoom siv yog nyob ntawm kev tuaj txawv teb chaws, CRTSll hom khiav phaj tshwj xeeb CNC grinder, tshwj xeeb grinder nrog kev sib tsoo log specification D550 × H200 × T304, qhov roughness ntawm cov phaj khiav yog yuav tsum tau. Rz=50 ~ 70µm, kev sib tsoo nyiaj pub dawb yog 2 hli, Vim tias qhov roughness ntawm cov phaj rail phaj bearing platform tsis siab thiab cov nyiaj sib tsoo loj, cov nplej loj ntawm pob zeb diamond sib tsoo log siv tau xaiv raws li {{7} }#, thiab kev sib tsoo log matrix yog forged nrog 20CrMo steel.

Tuam Tshoj txoj kev sib tsoo tam sim no thiab cov cuab yeej siv, feem ntau siv cov tsoos zirconium corundum sib tsoo log lub hnab ntawv sib tsoo txoj kev, thiab txoj kev no tsis tuaj yeem ua tiav qhov zoo ntawm kev sib tsoo tshuab.

Tam sim no, txoj kev dav dav ntawm kev tsheb ciav hlau sib tsoo hauv tsev yog qhov tshwj xeeb sib tsoo tsheb ciav hlau yog nruab nrog {{{0}}} cob sib tsoo log, uas yog, txhua sab ntawm txoj kev tsheb ciav hlau tau faib 48, teem caij rau hauv seem rail profile -70 degrees kom txog rau thaum ntxiv 20 degrees ntawm ntau txoj haujlwm. Vim tias kev ua haujlwm ntawm kev sib tsoo lub log muaj feem cuam tshuam rau kev sib tsoo ntawm txoj kev tsheb ciav hlau, qhov sib tsoo lub log feem ntau yog teem rau hauv qhov kev txiav txim ntawm sab nrauv ntawm txoj kev tsheb ciav hlau -- sab hauv ntawm txoj kev tsheb ciav hlau -- sab saum toj. ntawm txoj kev tsheb ciav hlau -- shaping. Lub peev xwm sib tsoo ntawm txoj kev hauv ib qho kev mus ncig yog 0.2-0.3mm, qhov sib tsoo ceev ntawm lub tsheb ciav hlau yog 8-25km / h, thiab lub log sib tsoo yuav tsum tau hloov ntawm li {{11} }}km ib. Qhov zoo ntawm cov txheej txheem no yog qhov profile tuaj yeem kho tau, cov kab mob loj tuaj yeem raug tshem tawm, kev khiav hauj lwm ntau thiab kev siv tshuab yog mature. Txawm li cas los xij, lub tshuab no tseem muaj cov teeb meem hauv qab no:

(1) Yooj yim rau kev puas tsuaj rau kev tsheb ciav hlau, cov cuab yeej siv thiab kev tswj xyuas yog qhov nyuaj, kev sib tsoo ceev yog qeeb.

(2) Kev siv ntau ntawm kev sib tsoo log thiab kev lag luam siab.

(3) Thaum tshav kub kub sib tsoo, raws li cov ntaub ntawv phenolic resin hauv zos tawg, qee yam ntawm cov pa phem thiab cov pa phem, thiab cov cua kub loj yuav ua rau cov tsheb ciav hlau los tsim cov thickness ntawm thermal stress txheej, cuam tshuam rau lub neej qaug zog ntawm cov khoom siv rail.

(4) Thaum lub sij hawm kev sib tsoo, lub abrasive ceev crushing thiab shedding ntawm resin binder ua ke ua ib tug loj npaum li cas ntawm cov plua plav, tshwj xeeb tshaj yog nyob rau hauv kev sib tsoo ntawm culverts thiab hav thiab lwm yam tsis zoo ventilated seem rail, plua plav cov ntsiab lus yuav txawm mus txog 3000mg / m3, ib puag ncig muaj kuab paug loj.

High efficiency ntev lub neej vitrified & resin composite CBN rail sib tsoo log. Cov khoom siv superhard tshiab cubic boron nitride (CBN) yog siv los hloov cov khoom siv zirconium corundum ib txwm ua lub ntsiab abrasive ntawm lub log sib tsoo. CBN thiab tshwj xeeb nanocrystal reinforced ceramic daim ntawv cog lus rau CBN yog tov, nias, thiab sintered los tsim cov khoom sib tsoo. CBN sib tsoo thaiv yog cemented rau saum npoo ntawm kev sib tsoo log los ntawm resin raws li txoj cai kev tsim kho tshuab, thiab tom qab ntawd lub log sib tsoo ua tiav ntawm qhov chaw kom tau txais cov khoom kawg.

Piv nrog rau cov tsoos corundum sib tsoo lub log, qhov zoo ntawm cov khoom siv hluav taws xob tshiab sib xyaw CBN rail sib tsoo log yog qhov tseem ceeb hauv cov ntsiab lus hauv qab no:

(1) Cov khoom siv tshiab superhard CBN yog siv los ua lub ntsiab abrasive ntawm lub log sib tsoo, nws qhov hardness yog sib npaug li 2 npaug ntawm qhov hardness ntawm corundum, thiab kev sib tsoo efficiency ntau dua 3-4 zaug ntawm lub log sib tsoo. , uas tuaj yeem txhim kho kev ua haujlwm ceev ntawm lub tsheb sib tsoo.

(2) Lub neej kev pab cuam ntawm CBN sib tsoo lub log tuaj yeem ncav cuag 20-40 lub sijhawm ntawm lub log sib tsoo zoo tib yam, thiab qhov hloov zaus yog tsawg hauv cov txheej txheem sib tsoo, uas txo cov kev siv zog ntawm tus neeg teb xov tooj; Kev sib tsoo lub log muaj kev puas tsuaj me me thiab cov plua plav tsis tshua muaj nyob hauv ib chav tsev kilometer, uas tuaj yeem daws qhov teeb meem ib puag ncig ntawm cov plua plav tshaj tus qauv thaum cov tsoos sib tsoo lub log ua haujlwm.

(3) Lub thermal conductivity ntawm CBN sib tsoo log yog 45 npaug ntawm corundum, lub tshav kub tsim nyob rau hauv cov txheej txheem sib tsoo tsawg dua, thiab cov resin yuav tsis tawg los tsim cov pa phem. Nyob rau tib lub sijhawm, kev sib tsoo cov tsheb ciav hlau tsis yooj yim los tsim cov kev sib tsoo tawg, uas tuaj yeem txuas ntxiv lub neej kev pabcuam ntawm txoj kev tsheb ciav hlau los ntawm 20-30 feem pua.