1. Yuav ua li cas yog hais tias railway bolts muaj qhov sib npaug ntawm qhov tob, thiab yuav ua li cas zam qhov no?
Cov xov tsis sib haum ntawm txoj kev tsheb ciav hlau ua rau lub zog tsis sib xws - cov xov sib sib zog nqus tsis tuaj yeem tuav cov txiv ntoo kom nruj, ua rau cov xov sib sib zog nqus, thaum cov xov sib sib zog nqus tuaj yeem ua rau lub bolt lub shank tsis muaj zog, ua rau nws yooj yim tawg. Qhov kev tsis sib haum no tseem ua rau muaj kev pheej hmoo ntawm kev hla - xov tooj thaum lub sijhawm teeb tsa, vim tias cov txiv ntoo tuaj yeem ntes ntawm cov xov tsis sib xws. Txhawm rau zam qhov no, cov tuam txhab siv cov tshuab threading precision uas ua kom cov xov sib sib zog nqus ntawm cov qauv kev tsheb ciav hlau (xws li UIC lossis ISO). Txhua lub ntsia liaj qhov rooj raug tshuaj xyuas nrog cov xov ntsuas los xyuas qhov tob thiab qhov sib xws ua ntej tawm hauv lub hoobkas. Cov tsheb ciav hlau kuj tseem muaj cov bolts los ntawm cov neeg muab ntawv pov thawj los xyuas kom meej qhov sib xws, tiv thaiv xov-txog teeb meem hauv cov kab ke.
2. Yuav ua li cas railway washers nrog ib tug chamfered ntug txawv ntawm tiaj tus - ntug washers?
Railway washers nrog ib tug chamfered ntug muaj ib tug me ntsis angled (puag) sab hauv los yog sab ntug, thaum tiaj tus - ntug washers muaj ntse, ncaj npoo. Lub chamfered ntug pab coj tus ntsia liaj qhov rooj rau hauv lub tshuab ntxhua khaub ncaws kom zoo thaum lub sijhawm teeb tsa, txo kev sib txhuam thiab tiv thaiv lub bolt los ntawm kev ntes ntawm lub tshuab ntxhua khaub ncaws ntug- qhov no yog qhov tshwj xeeb tshaj yog siv rau hauv qhov chaw nruj uas qhov kev sib tw yog qhov nyuaj. Chamfered washers kuj faib lub siab sib npaug ntau dua li tiaj tus - ntug, raws li cov ntug sib npaug tsis txhob siv lub zog rau ntawm ib qho ntawm cov khoom sib txuas. Pav ca- ntug tshuab ntxhua khaub ncaws yooj yim dua thiab pheej yig dua, haum rau qis- qhov chaw ntxhov siab qhov kev sib tw yooj yim. Chamfered washers yog nyiam rau siab -ceev los yog hnyav- tsheb ciav hlau, qhov chaw du thiab txawm siab yog qhov tseem ceeb.
3. Cov railway bolts puas siv tau rau hauv ob qho tib si tus qauv - ntsuas thiab nqaim- ntsuas kab, thiab yuav tsum tau hloov dab tsi?
Kev tsheb ciav hlau bolts tuaj yeem hloov kho rau ob tus qauv -gauge thiab nqaim- ntsuas lem, tab sis qhov tseem ceeb tsis xws li qhov ntev, txoj kab uas hla, thiab qhov sib txawv yuav tsum hloov. Nqaim-gauge lem siv cov hlua sib zog thiab me me, yog li cov bolts luv dua (100mm-120mm) thiab muaj cov kab me me (16mm{15}}18mm) kom phim cov khoom. Standard-gauge lem, nrog rau hnyav hnyav thiab loj pw tsaug zog, yuav tsum tau ntev (140mm{22}}180mm) thiab tuab (20mm{23}}24mm) bolts kom muaj zog txaus. Qhov sib nrug ntawm cov bolts kuj txawv: nqaim- ntsuas lem yuav muaj bolts spaced 300mm-400mm sib nrug rau kev ruaj ntseg, thaum cov qauv ntsuas ntsuas siv qhov sib nrug ntawm 400mm-600mm. Tsis tas li ntawd, nqaim-gauge bolts yuav siv tau yooj yim hex ceev, thaum tus qauv-gauge feem ntau siv xauv txiv ntseej-cov kev hloov no kom bolts haum tus khiav lub load thiab cov khoom loj.
4. Dab tsi yog qhov cuam tshuam ntawm kev lag luam muaj kuab paug ntawm txoj kev tsheb ciav hlau thiab cov txiv ntoo, thiab qhov no txo qis li cas?
Kev muaj kuab paug (piv txwv li, acidic gases, soot, tshuaj hmoov av) accelerates corrosion thiab hnav ntawm railway bolts thiab ceev. Cov tshuaj acids ua rau cov hlau nto, rhuav tshem cov txheej tiv thaiv zoo li galvanizing thiab ua rau pitting xeb. Soot thiab plua plav sau rau ntawm cov xov, nce kev sib txhuam thaum lub sijhawm teeb tsa thiab ua rau kev ntes. Txhawm rau txo qhov no, txoj kev tsheb ciav hlau siv epoxy-coated los yog stainless hlau bolts-epoxy tiv taus tshuaj puas tsuaj, thaum stainless hlau oxide zaj duab xis repels acids. Cov neeg ua haujlwm ntxuav bolts txhua lub limtiam hauv siab - thaj chaw muaj kuab paug, siv cov tshuaj ntxuav kom huv kom tshem tawm cov kua qaub. Bolts tseem raug tshuaj xyuas txhua hli rau xeb lossis pitting, nrog cov khoom puas tau hloov thaum ntxov. Hauv qhov xwm txheej hnyav, cov ntsia liaj qhov rooj npog (ua los ntawm cov yas lossis roj hmab) yog siv los thaiv cov fasteners los ntawm cov pa phem ncaj qha.
5. Yuav ua li cas railway bolts nrog dub oxide tiav ua piv rau galvanized bolts?
Railway bolts nrog dub oxide tiav (ib txheej nyias, txheej txheej dub tsim los ntawm kev kho tshuaj) muaj kev tiv thaiv corrosion thiab zoo nkauj, tab sis lawv muaj kev tiv thaiv tsawg dua li galvanized bolts. Cov oxide dub ua haujlwm los ntawm kev tsim ib qho kev tiv thaiv kev ya raws, tab sis nws nyias (tsuas yog ob peb microns) thiab tuaj yeem hnav sai sai hauv qhov siab - vibration lossis ntub dej. Nws feem ntau siv rau cov khoom siv hauv tsev tsheb ciav hlau (xws li, qhov chaw sib txuas) lossis qis - raug sab nraum qhov chaw, vim nws pheej yig dua galvanizing. Galvanized bolts, nrog cov zinc txheej tuab (50-}100 microns), muab kev tiv thaiv corrosion zoo dua-lawv nyob ntev 2-3 zaug hauv qhov chaw ntub dej lossis muaj kuab paug. Thaum dub oxide bolts haum rau cov mob me, galvanized bolts yog tus qauv rau feem ntau cov kev tsheb ciav hlau sab nraum zoov vim lawv cov kav ntev.