1. Yuav ua li cas rail web thickness cuam tshuam rau lateral stability rau nkhaus lem?
Thicker rail webs (AREMA 132RE: 19mm) muab kev ruaj ntseg zoo rau sab nraud ntawm cov kab nkhaus dua li nyias webs (UIC 54: 15.5mm). Curved lem muaj lateral log quab yuam; tuab webs tiv thaiv dabtsi yog khoov. Nyias webs pheej hmoo rail tilting, cuam tshuam gauge. Hnyav-hloov lem yuav tsum tuab-web rails; lub teeb-tsheb ciav hlau yuav siv tau nyias webs. Web thickness yog qhov tseem ceeb rau nkhaus khiav stability.
2. Dab tsi yog qhov txawv ntawm kev sib tsoo rau kev siab -ceev vs. hnyav- tsheb ciav hlau?
High -kev sib tsoo ceev ceev (CRTS 300N) siv cov khoom ua kom zoo dua kom ua tiav qhov chaw du (Ra Tsawg dua lossis sib npaug li 0.8μm) rau lub suab qis. Hnyav-haul sib tsoo (AREMA 132RE) siv coarser abrasives kom tshem tawm hnav (0.5–1mm) los ntawm 35t axles. Siab-kev sib tsoo ceev xav tau kev kho qhov profile meej; hnyav-haul sib tsoo ua ntej yuav tshem tawm cov khoom. Siab- cov kab nrawm nrawm txhua 6-12 lub hlis; hnyav-cov kab sib tsoo txhua 12-18 lub hlis. Kev sib tsoo txoj kev sib tw txhua txoj kev tsheb ciav hlau qhov kev ntxhov siab.
3. Kev ntsuas kub nruab nrab ntawm kev tsheb ciav hlau ua haujlwm li cas?
Rail nruab nrab ntsuas kub siv cov ntsuas ntsuas txuas nrog CWR los ntsuas kev ntxhov siab ntawm qhov sib txawv. Qhov nruab nrab temp yog qhov twg strain yog xoom (tsis muaj nro / compression). Kev sim ua tiav tom qab kev teeb tsa thiab txhua xyoo. Nyob rau hauv cov huab cua kub, kev kuaj xyuas rau compression; nyob rau hauv cov huab cua txias, rau nro. Kev ntsuam xyuas raug ua kom ntseeg tau tias qhov nruab nrab ntawm qhov ntsuas tsis raug rau CWR kev nyab xeeb.
4. Dab tsi ua rau cov tsheb ciav hlau lub taub hau hollow hnav, thiab cov ntsia hlau puas cuam tshuam?
Rail taub hau hollow hnav yog tshwm sim los ntawm lub log plam (braking, ntub lem) tsim kom muaj kev nyuaj siab. Metro rails (GB 50kg / m) feem ntau cuam tshuam vim yog nquag nres / pib. Hnyav-cov tsheb ciav hlau (AREMA 132RE) kuj fim nws ntawm qib siab. Nws yog kho los ntawm kev sib tsoo kom rov ua kom lub tiaj tiaj. Tiv thaiv lub log plam (tiv thaiv- kaw lub kaw lus) txo qhov hnav tsis zoo. Hom kev hnav no muaj nyob rau hauv siab - chaw nres tsheb.
5. Lub luag haujlwm ntawm rail steel kab kawm (piv txwv li, vanadium) hauv kev ua haujlwm yog dab tsi?
Cov ntsiab lus zoo li vanadium (GB 60kg / m) ua kom cov hlau steel muaj zog thiab qaug zog. Vanadium tsim cov carbide me me, ntxiv dag zog rau cov hlau yam tsis muaj kev txo qis. Niobium (UIC 60) txhim kho kev tiv thaiv tshav kub, muaj txiaj ntsig zoo hauv huab cua kub. Manganese boosts hnav tsis kam rau hnyav- tsheb ciav hlau. Cov ntsiab lus tailor steel zog rau cov kev xav tau ntawm kev tsheb nqaj hlau, txhim kho kev ua haujlwm thiab kev ua neej nyob.