Kev xaiv cov khoom siv thiab kev ua tau zoo yuav tsum tau hloov kho rau Elastic Rails
Dab tsi yog qhov zoo ntawm kev siv 60Si2MnA caij nplooj ntoos hlav hlau ua cov khoom siv rau lub caij nplooj ntoos hlav clips?
60Si2MnA caij nplooj ntoos hlav steel yog cov khoom siv tseem ceeb rau lub caij nplooj ntoos hlav clips. Nws cov txiaj ntsig tseem ceeb yog nyob rau hauv nws qhov siab elastic txwv thiab qaug zog lub zog, ua rau nws tiv taus ntev -lub sij hawm rov qab elastic deformation yam tsis tau yooj yim ua rau qaug zog tawg, yog li ua tau raws li qhov ntev - lub sij hawm kev ntxhov siab ntawm lem. Cov khoom no kuj muaj qhov hnav tsis kam thiab hardenability. Tom qab kev kho cua sov kom tsim nyog, nws qhov hardness thiab toughness tuaj yeem txhim kho ntxiv, txo kev hnav thaum siv thiab txuas nws lub neej kev pab cuam. Piv nrog rau lwm cov ntaub ntawv, 60Si2MnA caij nplooj ntoos hlav steel muaj tus nqi zoo dua -kev ua tau zoo thiab yooj yim rau huab hwm coj{11}} tsim khoom, ua tau raws li cov kev xav tau ntawm loj - teev kev tsim cov khoom siv. Nws cov kev tiv thaiv corrosion kuj ua tau raws li qhov yuav tsum tau ua ntawm cov pa khiav ib puag ncig, tswj kev ua haujlwm zoo txawm tias nyob hauv thaj chaw ntub dej nrog qhov sib txawv ntawm qhov kub thiab txias. Tsis tas li ntawd, cov khoom siv no muaj kev ua haujlwm zoo heev, tso cai rau nws ua tiav rau hauv lub caij nplooj ntoos hlav clips ntawm cov khoom sib txawv raws li cov kev xav tau sib txawv, muab kev hloov pauv tau zoo.
Cov txheej txheem kev kho cua sov ntawm lub caij nplooj ntoos hlav clips txhim kho lawv cov khoom elastic li cas?
Cov txheej txheem kev kho cua sov ntawm lub caij nplooj ntoos hlav clips feem ntau yog siv ua ke ntawm quenching thiab nruab nrab -temperature tempering, uas yog qhov tseem ceeb rau kev txhim kho lawv cov elasticity. Thaum lub sij hawm quenching, lub caij nplooj ntoos hlav clip yog rhuab saum toj no qhov tseem ceeb kub, tuav rau ib tug tej lub sij hawm, thiab ces txias sai sai muab cov hlau ib tug martensitic qauv, ho txhim kho nws hardness thiab lub zog. Nruab nrab-kub tempering muaj cua sov lub caij nplooj ntoos hlav quenched rau 350-500 degree, tuav nws ntawm qhov kub thiab txias, thiab maj mam txias nws hloov lub martensite rau tempered troostite, ho txhim kho nws elasticity thiab toughness thaum tuav hardness. Kev tswj xyuas qhov kub thiab txias yog qhov tseem ceeb heev thaum kho cua sov. Cov kub kub quenching ntau dhau ua rau cov nplej ntxhib thiab txo cov tawv nqaij; Tsis tshua muaj tempering kub tsis tshem tawm quenching kev nyuaj siab, cuam tshuam elastic zog. Los ntawm cov txheej txheem kev kho cua sov tsim nyog, qhov txwv elastic thiab qaug zog ntawm lub caij nplooj ntoos hlav clip tuaj yeem ua tau raws li cov qauv tsim, kom ntseeg tau tias nws tuaj yeem muab kev ruaj khov clamping quab yuam nyob rau lub sijhawm ntev thiab lav kev txhim kho kev ua tau zoo.
Dab tsi yog qhov txawv ntawm lub caij nplooj ntoos hlav clip specifications ntawm siab - kev tsheb ciav hlau ceev thiab hnyav - txoj kev tsheb ciav hlau?
High- txoj kev tsheb ciav hlau ceev thiab hnyav- txoj kev tsheb ciav hlau muaj qhov xav tau kev ua haujlwm sib txawv, thiab cov ntsiab lus ntawm lub caij nplooj ntoos hlav sib txuas kuj sib txawv heev. High - txoj kev tsheb ciav hlau ceev khiav ceev, xav tau kev ruaj ntseg siab heev. Yog li ntawd, cov elastic clips xaiv rau siab - ceev rails yuav tsum muaj ib tug ntau dua clamping quab yuam, feem ntau 13-15 kN, kom ntseeg tau tias cov ntsia hlau tsis hloov longitudinally los yog tom qab vim lub tsheb ciav hlau vibrations. Nyob rau tib lub sijhawm, siab - kev tsheb ciav hlau nrawm nrawm yuav tsum muaj lub neej qaug zog ntau dua, yuav tsum tau ua haujlwm ntev - lub sijhawm, siab - zaus vibrations, feem ntau yuav tsum muaj lub neej qaug zog tsis pub tsawg dua 2 lab cycles. Heavy- txoj kev tsheb ciav hlau muaj lub nra hnyav, thiab cov tsheb ciav hlau muaj kev cuam tshuam ntau dua. Cov clips elastic yuav tsum sib npaug elasticity thiab thauj khoom-cov kabmob muaj peev xwm, nrog rau clamping quab yuam feem ntau ntawm 10-12 kN, kom ntseeg tau tias ob qho tib si ruaj ntseg rail fixation thiab cushioning tiv thaiv lub tsheb ciav hlau cuam tshuam los ntawm elastic deformation. Tsis tas li ntawd, hnyav-haul railway elastic clips muaj cov hlaws loj dua-sectional qhov ntev thiab cov khoom tuab dua los txhim kho lawv cov load-cov kabmob muaj peev xwm thiab hnav tsis kam, thaum high-speed railway elastic clips tseem ceeb tshaj plaws tsim qauv thiab siab precision kom tau raws li qhov xav tau ntawm kev ua haujlwm siab.
Dab tsi yog qhov kev sib raug zoo ntawm elastic decay ntawm elastic clips thiab lawv cov kev pab cuam lub neej?
Lub elastic decay ntawm elastic clips yog zoo correlated nrog lawv cov kev pab cuam lub neej; ntev lub neej kev pab cuam, qhov tseem ceeb tshaj qhov elastic decay. Qhov no yog vim kev sib xyaw ua ke ntawm cov khoom siv qaug zog thiab hnav. Nyob rau hauv thawj theem ntawm kev siv, lub elasticity ntawm lub caij nplooj ntoos hlav clip yog nyob rau hauv nws cov qib siab, nrog ruaj khov clamping quab yuam, zoo ruaj lub tsheb ciav hlau. Nyob rau theem no, elasticity decays qeeb heev. Raws li kev pab cuam lub neej nce, lub caij nplooj ntoos hlav clip endures rov qab elastic deformation nyob rau hauv ib lub sij hawm ntev, ua rau qaug zog ntawm cov khoom, tsim nyob rau hauv micro- tawg, thiab ib tug txo nyob rau hauv elasticity, uas ua rau ib tug maj mam poob ntawm clamping quab yuam. Nyob rau tib lub sijhawm, hnav thiab xeb thaum siv nrawm nrawm nrawm, tshwj xeeb tshaj yog nyob rau hauv cov av ntub, plua plav, lossis acidic / alkaline ib puag ncig, qhov twg qhov lwj ntawm qhov nrawm nrawm. Feem ntau, kev pab cuam lub neej ntawm lub caij nplooj ntoos hlav zoo li qub yog 8-10 xyoo. Tom qab lub sijhawm no, elasticity lwj mus txog tus nqi tseem ceeb, thiab lub zog clamping tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua kom ruaj ntseg, yuav tsum tau hloov raws sijhawm. Kev hloov tsis tau raws sijhawm tuaj yeem ua rau txoj kev tsheb ciav hlau khiav tawm, ua rau kev tsheb ciav hlau tsis zoo thiab cuam tshuam rau kev nyab xeeb ntawm kev tsheb.
Yuav ua li cas txuas ntxiv lub neej kev pab cuam ntawm lub caij nplooj ntoos hlav clips los ntawm kev kho saum npoo?
Kev kho saum npoo kom zoo tuaj yeem txhim kho corrosion thiab hnav tsis kam ntawm lub caij nplooj ntoos hlav clip, yog li txuas nws lub neej kev pab cuam. Tam sim no, txoj kev kho saum npoo tseem ceeb yog kub -dip galvanizing. Lub caij nplooj ntoos hlav clip yog immersed nyob rau hauv molten zinc, tsim ib txheej zinc txheej ntawm nws nto. Cov txheej zinc no cais lub caij nplooj ntoos hlav clip los ntawm corrosive media xws li huab cua thiab noo noo, tiv thaiv xeb thiab txhim kho qhov hnav tsis kam. Xwb, Dacromet txheej tuaj yeem siv tau, siv zinc- txhuas sib tov uas muab kev tiv thaiv corrosion zoo heev, ua rau nws tsim tshwj xeeb rau cov av noo, ntug hiav txwv dej, thiab lwm qhov chaw corrosive. Cov txheej thickness yog uniform thiab tsis cuam tshuam lub caij nplooj ntoos hlav clip lub elasticity. Rau lub caij nplooj ntoos hlav clips ntawm hnyav- cov kab thauj khoom, qhov tawv tawv tuaj yeem ua tau los ua kom tawv tawv thiab txo qis hnav thaum siv. Tom qab kev kho deg, lub caij nplooj ntoos hlav clip yuav tsum tau kuaj xyuas kom zoo kom cov txheej txheem tsis muaj kev puas tsuaj thiab tsis muaj plating tsis tiav, yog li txuas nws lub neej kev pab cuam. Kev kho kom zoo tuaj yeem txuas ntxiv lub neej kev pabcuam ntawm lub caij nplooj ntoo hlav los ntawm 3-5 xyoos thiab txo cov nqi kho tsheb.