Caij nplooj ntoos hlav Clip Performance Assurance: Kev xaiv cov khoom siv thiab tiv thaiv kev qaug zog tawg
Dab tsi yog qhov tseem ceeb ntawm kev ua tau zoo yuav tsum tau siv 60Si2Mn cov khoom siv rau elastic strips?
60Si2Mn caij nplooj ntoos hlav steel yog cov khoom siv tseem ceeb rau elastic strips, nrog lub zog tensile tsis tsawg dua 1275MPa thiab lub zog tawm los ntawm tsis pub tsawg dua 1100MPa kom paub meej txaus elasticity thiab load-cov kabmob muaj peev xwm. Lub elongation ntawm cov khoom yuav tsum muaj ntau dua los yog sib npaug li 5% thiab txo qhov cheeb tsam loj dua los yog sib npaug li 25%, muab cov yas zoo deformation muaj peev xwm kom tsis txhob tawg tawg. Lub Brinell hardness yuav tsum tau tswj ntawm 380-444HB, thiab hardness uniformity sib txawv yuav tsum tsis pub tshaj ± 15HB los xyuas kom meej tag nrho cov kev ua tau zoo ntawm cov elastic strip. Cov sulfur thiab phosphorus cov ntsiab lus hauv cov khoom yuav tsum nruj me ntsis tswj hauv qab 0.035% kom txo tau qhov cuam tshuam ntawm kev puas tsuaj rau kev ua haujlwm qaug zog. Nyob rau tib lub sijhawm, qib ntawm cov khoom siv tsis yog hlau yuav tsum ua kom tau raws li cov qauv tsim nyog kom tsis txhob suav nrog ua rau qaug zog tawg qhov chaw.
Dab tsi yog qhov laj thawj tseem ceeb rau kev qaug zog ntawm W- hom elastic strips?
Lub hauv paus yog vim li cas rau qhov qaug zog tawg ntawm W- hom elastic strips yog qhov tsis muaj -metallic inclusions nyob rau hauv cov ntaub ntawv raw, xws li impurities uas muaj cov ntsiab lus xws li Ca, Si, P, O, thiab K, uas ua raws li cores rau tawg pib. Thaum lub sij hawm lub caij nplooj ntoos hlav steel, kev hloov pauv ntawm cov pwm ua kua theem yuav ua rau pwm flux koom nrog hauv cov hlau molten, ua rau sab hauv tsis xws luag thiab txo qhov qaug zog ntawm elastic strip. Elastic strips dais ua ke bending thiab torsion stresses thaum lub sij hawm kev pab cuam, nrog rau cov kev ntxhov siab concentration cheeb tsam feem ntau nyob rau hauv lub hlws ris ntawm nto thiab sherardized txheej, qhov twg qaug zog tawg yog nquag pib thiab propagate. Cov txheej txheej decarburization ntau dhau thaum tsim khoom yuav txo qhov muaj zog thiab tawv tawv, ua kom qaug zog tsis ua haujlwm. Kev quab yuam clamping tsis raug thaum lub sijhawm teeb tsa yuav hloov lub xeev kev ntxhov siab ntawm elastic strip, ua rau nws lub neej qaug zog.
Yuav ua li cas los txhim kho qhov qaug zog tsis kam ntawm elastic strips los ntawm cov txheej txheem optimization?
Kev tshuaj xyuas cov ntaub ntawv raw thaum nkag yuav tsum suav nrog DS suav nrog qib thiab tsis yog -kev txiav txim siab qhov chaw nyob hauv metallic inclusion los tshem tawm cov khoom tsis tsim nyog los ntawm kev tsim khoom. Optimize lub caij nplooj ntoos hlav steel pouring txheej txheem, stabilize lub pwm kua theem, txo pwm flux entrainment, thiab txo qhov tshwm sim ntawm sab hauv tsis xws luag. Txais cov txheej txheem kev kho cua sov zoo tom qab kev sib sau elastic, tswj quenching kub thiab tempering lub sij hawm los xyuas kom meej cov qauv metallographic uniform. Ua ntej sherardizing rau saum npoo kev kho mob, tswj lub thickness thiab bonding quab yuam ntawm lub sherardized txheej, thiab zam lub hlws ris ntawm lub txheej thiab substrate ua ib tug stress concentration point. Tom qab ntau lawm, kev sim qaug zog ntawm ntau tshaj 1 lab lub voj voog yuav tsum tau ua, thiab cov khoom tsis tsim nyog raug txwv tsis pub tawm hauv lub hoobkas.
Dab tsi yog clamping quab yuam adaptation qauv rau ntau hom elastic strips?
Hom Ⅰ elastic strips yog siv nrog 43kg / m rails, thiab lawv cov clamping quab yuam yuav tsum tau tswj ntawm 8-10kN los tiv thaiv longitudinal txav ntawm txoj kev tsheb ciav hlau . 60}kg / m rails yuav tsum tau hom Ⅱ elastic strips, nrog lub clamping quab yuam nce mus rau 10-} 12kN rau . 60 ntau zog. WJ-8 hom elastic strips siv nyob rau hauv high-speed railway kab xav tau ib tug clamping quab yuam ntawm 12-15kN los xyuas kom meej kev ruaj ntseg nyob rau hauv high-ceev ua hauj lwm. Elastic strips rau cov kab hnyav hnyav yuav tsum muaj lub zog clamping tsis pub tsawg dua 15kN vim muaj kev cuam tshuam ntau dua, thiab lub zog tawg yuav tsum tsis pub tshaj 8% hauv ib hlis. Lub clamping quab yuam ntawm elastic strips yuav tsum tau sim nrog ib tug tshwj xeeb detector, sampling 50 daim ib kilometer, nrog ib tug tsim nyog tus nqi ntawm ntau tshaj los yog sib npaug rau 98%.
Dab tsi yog qhov tseem ceeb ntawm kev saib xyuas thiab soj ntsuam cov ntsiab lus ntawm elastic strips thaum lub sijhawm ua haujlwm?
Kev tshuaj xyuas txhua hnub yuav tsum saib xyuas cov tsos ntawm elastic strips, tsom rau kev kuaj xyuas cov kab nrib pleb, deformation, lossis txheej txheej txheej, thiab kos qhov txawv txav tam sim ntawd. Tsis tu ncua sim nrog lub clamping quab yuam ntes; Yog hais tias lub clamping quab yuam poob los ntawm ntau tshaj 20%, hloov lub elastic strip nyob rau hauv lub sij hawm. Rau cov elastic strips nyob rau hauv kev pab cuam rau ntau tshaj 8 xyoo, nce qhov piv txwv thiab ua rau qaug zog kev soj ntsuam ntawm 100 qauv ib kilometer. Hauv thaj chaw alpine thiab cov av ntub, ua kom luv lub voj voog tshuaj xyuas thiab ntxiv 2 qhov kev tshuaj xyuas tshwj xeeb ntxiv txhua xyoo los tiv thaiv kev ua tsis tiav vim kev xeb. Tsis txhob tsoo cov hlua elastic nrog cov khoom tawv thaum lub sijhawm tu, thiab tswj lub zog ntawm qhov tsim ntau yam thaum lub sij hawm kev teeb tsa kom tsis txhob muaj kev ntxhov siab los ntawm ntau tshaj - zawm.