Hom thiab cov ntsiab lus tseem ceeb ntawm Elastic Rail Clips
Dab tsi yog qhov tseem ceeb hauv tsev elastic bar qauv thiab lawv cov xwm txheej hloov kho?
Cov khoom siv hluav taws xob hauv tsev muaj xws li tsib pawg: hom Ⅰ, hom Ⅱ, hom Ⅲ, hom Ⅴ thiab SKL hom, haum rau ntau hom kev taug qab thiab kev thauj khoom. Hom Ⅰ elastic bars yog haum rau 38/43kg / m zoo tib yam ceev rails nrog nruab nrab nias quab yuam thiab nqi pheej yig, feem ntau yog siv rau ceg railways thiab industrial thiab mining kab. Hom Ⅱ elastic bars yog haum rau 50kg / m zoo tib yam ceev lub ntsiab kab rails, nrog elasticity zoo dua li hom Ⅰ thiab lub neej qaug zog ntawm ntau dua los yog sib npaug rau 2 lab lub sij hawm, ntsib cov neeg caij tsheb txhua hnub thiab kev thauj mus los. Hom Ⅲ elastic bars yog haum rau 60kg / m hnyav - lub luag hauj lwm zoo tib yam railway rails nrog ntau dua nias quab yuam thiab muaj zog deformation kuj, txo txoj kev pheej hmoo ntawm rail loosening. Hom Ⅴ elastic bars yog tshwj xeeb rau siab - kev tsheb ciav hlau tsis muaj kev sib tw nrog kev sib tw dynamic- zoo li qub stiffness ratio Tsawg dua los yog sib npaug rau 2.0, zoo heev vibration txo cov nyhuv thiab haum rau siab - tsav tsheb. SKL elastic bars yog European qauv qauv, haum rau UIC60 txawv teb chaws tus qauv rails, siv nyob rau hauv txawv teb chaws tej yaam num thiab sib koom ua ke - venture railways.
Dab tsi yog qhov ntsuas qhov tseem ceeb ntawm elastic tuav thiab vim li cas lawv tseem ceeb?
Cov ntsiab lus tseem ceeb ntawm cov khoom siv elastic muaj xws li tsib yam khoom: nias quab yuam, qhov tawv nqaij zoo li qub, dynamic- zoo li qub stiffness piv, qaug zog lub neej thiab qis- kub toughness, uas yog cov txheej txheem kev soj ntsuam tseem ceeb rau elastic bar zoo. Nias quab yuam txiav txim siab qhov ruaj khov ntawm txoj kev tsheb ciav hlau, lub zog tsis txaus yuav ua rau txoj kev tsheb ciav hlau khiav tawm, thiab lub zog ntau dhau yog yooj yim ua rau cov yas deformation ntawm elastic bar. Static stiffness tswj lub elastic deformation ntau yam ntawm elastic bar hloov mus rau qhov nthuav thiab contraction xav tau ntawm rail thermal expansion thiab contraction. Qhov dynamic -static stiffness ratio Tsawg dua los yog sib npaug li 2.0 yog qhov yuav tsum tau nruj rau siab -ceev railway elastic bars, uas ua kom muaj kev vibration txo cov nyhuv thaum lub sij hawm siab - tsav tsheb thiab txhim kho smoothness. Lub neej qaug zog yuav tsum muaj ntau dua lossis sib npaug li 2 lab lub sijhawm kom ntseeg tau tias lub elastic bar tsis ua haujlwm ntev - siv sijhawm thiab txo qhov zaus hloov. Tsawg- qhov kub thiab txias ua kom ntseeg tau tias lub elastic bar tsis nkig tawg nyob rau hauv qhov chaw txias heev thiab zam kev nyab xeeb ntawm huab cua huab cua, thiab txhua qhov ntsuas yog qhov tseem ceeb.
Dab tsi yog cov khoom siv tseem ceeb thiab cov ntsiab lus thev naus laus zis ntawm elastic tuav?
Cov khoom siv tseem ceeb ntawm cov khoom siv elastic yog 60Si2MnA siab-cov hlau zoo caij nplooj ntoos hlav, uas muaj lub zog tensile ntawm Greater los yog sib npaug rau 1270MPa thiab lub zog tawm los ntawm Ntau dua lossis sib npaug rau 1100MPa, nrog rau elasticity thiab toughness. Cov khoom siv yuav tsum nruj me ntsis tswj cov sulfur thiab phosphorus cov ntsiab lus tsawg dua los yog sib npaug li 0.025% kom tsis txhob muaj impurities cuam tshuam rau kev qaug zog ntawm elastic bar thiab ua rau tawg thaum ntxov. Cov txheej txheem tseem ceeb ntawm elastic tuav yog kub forging tsim + quenching thiab tempering kho, quenching kub yog tswj ntawm 850-870 degree, thiab tempering kub yog 420-450℃los xyuas kom meej elastic hardness ntawm elastic bar. Tom qab tsim, nto txhaj tshuaj peening kev kho mob yog yuav tsum tau los txhim kho lub hardness ntawm lub nto thiab corrosion kuj ntawm elastic bar thiab txo cov kev ntxhov siab concentration. Cov khoom tiav lawm kuj xav tau 100% qaug zog sampling tshuaj xyuas kom ntseeg tau tias qhov kev ua tau zoo ntawm txhua qhov elastic bar ua tau raws li tus qauv, thiab cov khoom siv thiab cov txheej txheem ncaj qha txiav txim siab txog kev pabcuam lub neej ntawm elastic bar.
Dab tsi yog qhov sib txawv ntawm qhov kev ua tau zoo ntawm siab - txoj kev tsheb ciav hlau ceev thiab cov kab tsheb ciav hlau zoo tib yam?
High -Speed railway elastic bars yuav tsum muaj ib tug dynamic- zoo li qub stiffness piv Tsawg dua los yog sib npaug rau 2.0, thaum zoo tib yam railway elastic bars tsis muaj cov lej nruj thiab tsuas yog yuav tsum tau xyuas kom meej elasticity, uas yog qhov tseem ceeb ntawm kev ua tau zoo ntawm ob. Lub zog sib txawv ntawm qhov siab ntawm - ceev railway elastic bars yog tsawg dua los yog sib npaug rau ± 10% nrog siab dua precision, tsis txhob nias quab yuam attenuation tshwm sim los ntawm siab - ceev vibration, thiab qhov zoo tib yam railway elastic bars yuav tsawg dua los yog sib npaug rau ± 15%. Lub neej qaug zog ntawm kev siab -ceev railway elastic bars yuav tsum muaj ntau dua los yog sib npaug rau 3 lab lub sij hawm, thiab qhov zoo tib yam railway elastic bars Ntau tshaj los yog sib npaug rau 2 lab lub sij hawm, lub siab - ceev railway standard yog nruj dua, yoog mus rau ntev - lub sij hawm siab - ceev vibration ua hauj lwm tej yam kev mob. High -Speed railway elastic bars yuav tsum muaj -40℃qis-kub toughness, thiab zoo tib yam railway elastic bars yuav hloov mus rau -20℃kom tau raws li qhov xav tau kev nyab xeeb ntawm ntau cheeb tsam. Qhov saum npoo ntawm siab - ceev railway elastic bars yog kho nrog anti- xeb txheej, thiab zoo tib yam railway elastic bars feem ntau yog tiv thaiv los ntawm anti{25}} xeb roj nrog ntau dua los tiv thaiv - cov qauv corrosion, yoog mus rau qhov ntev - voj voog tu-dawb xav tau ntawm kev kub ceev railways.
Dab tsi yog cov qauv kev ua tsis tiav thiab kev tiv thaiv kev tiv thaiv ntawm elastic tuav hauv kev siv?
Cov ntaub ntawv tsis ua hauj lwm ntawm elastic tuav muaj xws li yas deformation, qaug zog tawg, corrosion tsis ua hauj lwm thiab kawg tawg, tag nrho cov ncaj qha cuam tshuam rau kev ruaj ntseg ntawm lub fastening system. Cov yas deformation feem ntau yog tshwm sim los ntawm kev quab yuam ntau dhau los yog cov khoom tsis txaus, thiab kev tiv thaiv yuav tsum tau xaiv nruj raws li cov qauv tsheb ciav hlau kom tsis txhob siv ntau tshaj -load. Kev qaug zog tawg yog tshwm sim los ntawm kev ntxhov siab lossis kev qaug zog ntawm lub neej, kev tiv thaiv yuav tsum tau xaiv cov khoom tsim nyog, ua haujlwm zoo hauv kev txhaj tshuaj peening, thiab tsis tu ncua xyuas cov xwm txheej ntawm elastic tuav. Corrosion tsis ua hauj lwm feem ntau tshwm sim nyob rau hauv cov chaw ntub dej ntawm ntug dej hiav txwv, kev tiv thaiv yuav tsum tau txhuam cov tshuaj tiv thaiv -corrosion lubricant thiab xaiv elastic tuav nrog anti-corrosion txheej. Qhov kawg tawg yog tshwm sim los ntawm kev ua haujlwm thev naus laus zis tsis raug, kev tiv thaiv yuav tsum muaj kev tswj hwm nruj ntawm cov txheej txheem forging thiab kev kho cua sov, thiab kev tshuaj xyuas tag nrho ua ntej tawm hauv lub hoobkas. Kev hloov pauv raws sij hawm ntawm kev ua tsis tau zoo ntawm cov hlua elastic hauv kev saib xyuas txhua hnub tuaj yeem zam qhov kev pheej hmoo ntawm kev nyab xeeb.