Selelekela
Li-bolts ke likarolo tsa bohlokoa lisebelisoa tsa indasteri le mekhoa ea meralo. Libakeng tse -mocheso o phahameng, liboutu li tlameha ho mamella eseng feela meroalo e boima ea mochini empa le mocheso o feteletseng, katoloso ea mocheso, oxidation, le khatello ea nako e telele-. Liindasteri tse kang ho fehla motlakase, ho sebetsa ka petrochemical, sefofane, ho etsa likoloi, tšepe le tlhahiso ea liindasteri kaofela li itšetlehile ka{4}}liboutu tse phahameng tsa mocheso ho boloka botsitso ba lisebelisoa le polokeho ea ts'ebetso.
Ho khetha liboutu tse fosahetseng bakeng sa maemo a phahameng a mocheso ho ka baka mathata a tebileng. Mocheso o feteletseng o ka fokotsa matla a ho tsitsa, oa fokolisa matla a ho kokota, oa potlakisa ho bola, kapa oa baka deformation ha nako e ntse e ea. Maemong a boima, ho hloleha ha bolt ho ka fella ka ho koaloa ha lisebelisoa, likotsi tsa polokeho, litokiso tse theko e boima, le tahlehelo ea tlhahiso.
Bareki ba bangata ba liindasteri ba tsepamisitse maikutlo haholo ho boholo ba bolt le boemo ba matla, empa-lisebelisoa tse phahameng tsa mocheso li hloka ho nahanoa ka botebo. Sebopeho sa thepa, khanyetso ea oxidation, ts'ebetso ea mokhathala oa mocheso, moralo oa likhoele, le mekhoa ea ho kenya kaofela li susumetsa ts'epahalo ea bolt tlasa mocheso.
Sengoliloeng sena se hlalosa mokhoa oa ho khetha liboutu tse nepahetseng bakeng sa-tikoloho e phahameng ea mocheso 'me se totobatsa lintlha tsa bohlokoa tse amang tšebetso e potlakileng maemong a boima a indasteri.
Utloisisa Maemo a Tšebetso a{0}}Tikoloho e Phahameng ea Mocheso
Pele u khetha liboutu, hoa hlokahala ho lekola tikoloho ea sebele ea ts'ebetso. Maemo a fapaneng a mocheso a hloka lisebelisoa tse fapaneng tsa bolt le thepa ea mochini.
Khetholla Mocheso o Sebetsang oa Mocheso
Mohato oa pele ke ho khetholla mocheso oa ho sebetsa oa thepa. Litsamaiso tse ling li sebetsa ka mokhoa o tsoelang pele mochesong o itekanetseng ho pota 200 degrees ho isa ho 400 degree, ha tse ling li ka feta 800℃kapa 1000℃lits'ebetsong tse feteletseng tsa indasteri.
Liboutu tsa tšepe tse tloaelehileng tsa k'habone li ka 'na tsa sebetsa hantle mochesong o tloaelehileng, empa matla a tsona a fokotseha ka potlako tlas'a mocheso oa nako e telele. -lisebelisoa tsa mocheso o phahameng li hloka liboutu tse etselitsoeng ka ho hlaka ho hlokomela maemo a mocheso a phahameng.
Baenjiniere ba boetse ba lokela ho khetholla pakeng tsa mocheso o tsoelang pele oa ho sebetsa le mocheso o phahameng. Ho ba boemong ba-nako e khutšoanyane mochesong o feteletseng ho ka hloka lisebelisoa tse fapaneng tsa bolt ha ho bapisoa le mocheso o tsoelang pele-nakong e telele.
Hlahloba Maemo a Libaesekele tsa Thermal
Litsamaiso tse ngata tsa indasteri li na le nako ea ho futhumatsa le ho pholisa khafetsa. Li-boilers, litsamaiso tsa ho felloa ke matla, li-turbine le li-reactor tsa indasteri hangata lia hola nakong ea ts'ebetso le konteraka nakong ea ho koala.
Ho palama libaesekele ho baka khatello ka har'a liboutu le likarolo tse hokahaneng. Ho atoloha khafetsa le ho honyela ho ka 'na ha theola manonyeletso butle-butle kapa ha baka mapetsong a mokhathala. Ha nako e ntse e ea, mokhathala oa mocheso o ka fokolisa sekontiri 'me sa eketsa kotsi ea ho hlōleha.
Li-bolts tse sebelisoang libakeng tsa libaesekele tse futhumetseng li lokela ho fana ka khanyetso e matla ea mokhathala le matla a tsitsitseng a ho koala tlas'a ho fetoha ha mocheso.
Hlahloba Litlhoko tsa Mojaro le Khatello
Thepa e phahameng-hangata e sebetsa tlas'a meroalo e boima le khatello ea ka hare. Lisebelisoa tsa ho futhumatsa mocheso, liphaephe tsa mouoane, likepe tsa khatello, le liindasteri li beha khatello e kholo lits'ebetsong tsa ho tiisa.
Lithempereichara tse phahameng, lisebelisoa tsa bolt li lahleheloa ke karolo ea matla a tsona a tsitsitseng. Phokotso ena ea matla e ama bokhoni ba liboutu ho boloka bots'epehi ba pele le boits'oaro bo kopaneng.
Ho bohlokoa ho khetha liboutu tse nang le moroalo o lekaneng-mohatla o lekaneng mochesong oa mocheso oa ho sebetsa.
Lekola Ponahalo ea Tikoloho
Mocheso ha se eona feela ntho e amang ts'ebetso ea bolt. Libaka tse phahameng-mocheso le tsona li ka kenyelletsa oxidation, mongobo, lik'hemik'hale, kapa likhase tse senyang.
Ka mohlala:
Litsamaiso tsa metsing li kopanya mocheso le ho pepeseha ha metsi a letsoai
Limela tsa lik'hemik'hale li pepesa liboutu ho asiti le mouoane o senyang
Thepa ea sebōpi e shebane le oxidation e bakoang ke ho pepesehela moea o chesang nako le nako
Khetha Thepa e nepahetseng ea Bolt bakeng sa ho hanyetsa mocheso
Khetho ea thepa ke e 'ngoe ea liqeto tsa bohlokoa ka ho fetisisa-lisebelisoa tsa libolute tsa mocheso o phahameng. Lisebelisoa tse fapaneng li fana ka maemo a fapaneng a ho hanyetsa mocheso, ho boloka matla, le ts'ireletso ea oxidation.
Liboutu tsa tšepe tsa Carbon le Meeli ea tsona ea Mocheso
Liboutu tsa tšepe tsa carbon li sebelisoa haholo lisebelisoa tsa indasteri ka lebaka la theko e tlase le matla a matle a mochini. Leha ho le joalo, ho hanyetsa mocheso oa bona ho lekanyelitsoe.
Lithempereicharang tse phahameng, tšepe ea carbon butle-butle e lahleheloa ke ho thatafala le matla a tsitsitseng. Ho pepesetsoa mocheso nako e telele ho ka boela ha potlakisa oxidation le scaling.
Liboutu tsa tšepe tse tloaelehileng tsa k'habone hangata li sebetsa feela-mocheso o itekanetseng. Liaparo tse sireletsang li ka ntlafatsa ho thibela kutu, empa li ke ke tsa thibela ka botlalo tahlehelo ea matla tlas'a mocheso o feteletseng.
Bakeng sa{0}}lisebelisoa tsa liindasteri tsa mocheso o phahameng, hangata ho hlokahala lisebelisoa tse matla le tse sa keneleng mocheso{1}.
Liboutu tsa Alloy Steel bakeng sa-Matla a Mocheso a Holimo
Liboutu tsa tšepe tsa motsoako li na le likarolo tse ling tse kang chromium, molybdenum, le vanadium. Lintho tsena li ntlafatsa ho hanyetsa mocheso, ho thatafala, le botsitso ba mechine.
Liboutu tsa tšepe tsa Chromium-molybdenum alloy hangata li sebelisoa{1}}ka likepeng tse nang le khatello e phahameng ea mocheso, liboiler, li-turbine le lisebelisoa tsa petrochemical. Li boloka matla a phahameng ka tlas'a mocheso ha li bapisoa le liboutu tsa tšepe tse tloaelehileng.
Litšepe tse nang le mocheso-li nang le litšepe tse hloekisitsoeng li boetse li fana ka matla a ho thibela mokhathala le ho se khathale, e leng se etsang hore li tšoanele{1}} tšebetso ea nako e telele ea indasteri.
Liboutu tsa tšepe tse se nang tšepe bakeng sa ho hanyetsa Mocheso le ho Corrosion
Liboutu tsa tšepe tse sa hloekang li fana ka khanyetso e ntle ea kutu le khanyetso e ntle ea oxidation mochesong o phahameng.
Mefuta e tloaelehileng ea tšepe e sa hloekang e kenyelletsa:
304 tšepe e sa hloekang bakeng sa lits'ebetso tse akaretsang tsa indasteri
316 tšepe e sa jeleng paate bakeng sa tikoloho e senyang le ea leoatle
310 tšepe e sa hloekang bakeng sa ho hanyetsa mocheso o feteletseng
Lisebelisuoa tse Khethehileng{0} tsa Mocheso o Phahameng
Liindasteri tse ling li hloka lisebelisoa tse hahelletsoeng hantle bakeng sa maemo a feteletseng a ts'ebetso.
Nickel alloy bolts e fana ka khanyetso e ikhethang mochesong, oxidation le ho bola ha lik'hemik'hale.
Liboutu tsena li sebelisoa haholo lienjineng tsa sepakapaka, li-turbine tsa khase le lifeme tsa ho lokisa lik'hemik'hale.
Li-bolts tsa Titanium li kopanya thepa e bobebe le ho hanyetsa mocheso o matla. Liindasteri tsa boema-fofane le tse sebetsang hantle haholo-hangata li sebelisa lithapo tsa titanium ho fokotsa boima ba 'mele ha li ntse li tšepahala.
Nahana ka Mechanical Properties le Bolt Performance
Lits'ebetso tse phahameng-li hloka ho feta ho mamella mocheso. Li-bolts li boetse li tlameha ho boloka ts'ebetso ea mochine tlas'a khatello e tsoelang pele le ho pepeseha ha mocheso.
Matla a Tsitsitseng ka Mocheso o Phahameng
Matla a matla a lekanya boima bo boholo boo bolt e ka bo mamellang pele e robeha. Ha mocheso o ntse o eketseha, matla a ho tsitsa a fokotseha.
Bolt e sebetsang hantle mochesong oa kamore e ka 'na ea fokola haholo ha mocheso o le holimo. Ka lebaka lena, baenjiniere ba lokela ho lula ba lekola-boitsebiso bo phahameng ba mocheso ho fapana le ho itšetleha feela ka maemo a tloaelehileng a kamore{2}}litekanyetso tsa mocheso.
Creep Resistance
Creep ke e 'ngoe ea lintho tse amehang ka ho fetisisa-mocheng oa ho boloka mocheso o phahameng. Creep e bua ka deformation butle le ka ho sa feleng ea thepa tlas'a khatello e tsoelang pele le mocheso.
Le ha mojaro o kentsoeng o lula o le ka tlase ho moeli oa matla a tensele, ho pepeseha ha mocheso nako e telele- ho ka otlolla bolt butle-butle le ho fokotsa matla a ho kokota.
Ho hanyetsa ha creep ho bohlokoa haholo ho:
Li-boilers
Li-turbine tsa mouoane
Lijana tsa khatello
Li-reactor tsa indasteri
Likopano tsa sebōpi
Ho hanyetsa Mokhathala Tlas'a Khatello ea Mocheso
Ho fetoha ha mocheso khafetsa ho baka khatello ea mocheso ka har'a liboutu. Lipotoloho tsa ho atoloha le ho honyela li ka qetella li baka mapetsong a manyenyane haholo.
Hangata ho khathala ha mokhathala ho hlaha butle-butle 'me ho ka' na ha se ke ha bontša matšoao a bonahalang pele ho robeha ka tšohanyetso.
{{0}liboutu tsa tšepe tsa boleng bo holimo tse nang le kalafo e nepahetseng ea mocheso hangata li fana ka matla a ho thibela mokhathala. Torque e nepahetseng ea preload le torque e boetse e thusa ho fokotsa khatello ea maikutlo.
Oxidation le Scaling Resistance
Mocheso o sa khaotseng o ka baka oxidation sebakeng sa bolt. Oxidation e fokolisa thepa mme e fokotsa bophelo ba ts'ebeletso.
Lithempereicharang tse phahameng haholo, litšepe tse ling li etsa likarolo tse teteaneng tsa oxide tse tsejoang e le scaling. Ho lekanya ho matla ho ka senya likhoele le ho fokotsa ts'epo ea ho tiisa.
Liboutu tsa tšepe e sa hloekang le nickel alloy li fana ka khanyetso e ntle ea oxidation hobane likarolo tsa tsona tsa alloying li theha likarolo tse sireletsang tsa oxide tse liehisang kutu e eketsehileng.
Khetha Mokhoa o Nepahetseng oa Bolt le Mokhoa oa ho Kenya
Moralo o nepahetseng oa bolt le ho kenya liboutu li bohlokoa bakeng sa ho boloka botsitso ba manonyeletso{0}}ka lisistimi tse phahameng tsa mocheso.
Ho Khetha Boholo bo Loketseng ba Bolt le Mofuta oa Thread
Bolt bophara le moralo oa khoele li ama matla a clamping le botsitso ba mocheso.
Hangata liboutu tse kholo li fana ka matla a holimo, empa boholo bo feteletseng bo ka baka khatello e sa hlokahaleng ea mocheso.
Liboutu tse mahoashe{0}li sebelisoa hangata indastering hobane ha li senyehe 'me li sebetsa hantle libakeng tse litšila. Li-Fine-li-thread bolts li fana ka taolo e ntlafetseng ea ho jara esale pele le ho sebetsa hantle ka ho thothomela.
Torque e nepahetseng le Taolo ea Preload
Ho bohlokoa ho kenya liboutu esale pele-ka mocheso o phahameng. Mocheso o feteletseng o ka fokotsa phallo ea pele ha nako e ntse e feta ka lebaka la ho hola ha mocheso le ho senyeha ha metsi.
Tlas'a{{0}matlapana a ka lumellang ho sisinyeha ha manonyeletso le ho lutla, ha ho tiea ho feta-ho ka senya bolt kapa ho potlakisa mokhathala.
Li-wrenches tsa torque, li-hydraulic tensioners, le li-preload monitoring system li thusa ho netefatsa hore ho kentsoe ka nepo.
Tšebeliso ea li-washer le li-Locking Systems
Lithempereichara tse phahameng le ho thothomela li ka 'na tsa lokolla li-fasteners butle-butle. Lisebelisoa tsa ho koala li thusa ho boloka botsitso bo kopanetsoeng nakong ea ts'ebetso.
Litharollo tse tloaelehileng li kenyelletsa:
Liwasha{0}}tse thibelang mocheso
Notlela linate
Lihlatsoa tsa selemo
Lisebelisoa tsa ho notlela mechine
Tšebelisano ea Katoloso ea Mocheso
Lisebelisoa tse fapaneng li atoloha ka litekanyetso tse fapaneng ha li futhumatsoa. Haeba liboutu le likarolo tse hokahaneng li na le li-coefficients tse fapaneng haholo tsa katoloso ea mocheso, khatello e feteletseng e ka hlaha nakong ea ts'ebetso.
Ho khetha lisebelisoa tse lumellanang ho fokotsa khatello ea mocheso le ho ntlafatsa ho tšepahala ha manonyeletso.
Baenjiniere ba boetse ba lokela ho nahana ka moralo o kopanetsoeng ka hloko ho lumella motsamao o laoloang oa mocheso moo ho hlokahalang.
Lekola Maemo, Teko, le Botšepehi ba Mofani
Liboutu tse tšepahalang tse phahameng-li tlameha ho kopana le maemo a thata le ho latela mekhoa ea tlhahlobo ea litsebi.
Maemo a Indasteri bakeng sa-Liboutu tsa Mocheso o Holimo
Hangata liboutu tsa indasteri li latela litekanyetso tse kang:
ASTM
ASME
ISO
DIN
SAE
{{0}Mekhoa ea Tekolo ea Mocheso e Phahameng
Baetsi ba litsebi ba etsa liteko tse fapaneng ho netefatsa ts'ebetso ea bolt.
Mekhoa e tloaelehileng ea tlhahlobo e kenyelletsa:
Teko e phahameng-ea mocheso
Teko ea meea
Teko ea mokhathala oa mocheso
Teko ea ho bola ha letsoai
Teko ea boima
Taolo ea Boleng le Traceability
Hangata {0}lisebelisoa tsa mocheso o phahameng li hloka hore motho a tsebe ho lateloa ka botlalo.
Bahlahisi ba tšepahalang ba boloka litsamaiso tse thata tsa taolo ea boleng tse kenyelletsang:
Tlhahlobo ea thepa e tala
Tlhokomelo ea phekolo ea mocheso
Tlhahlobo ea mahlakore
Boitsebahatso ba sehlopha
Tlhahlobo ea ho qetela ea ts'ebetso
Qetello
Ho khetha liboutu tse nepahetseng bakeng sa{0}}tikoloho ea mocheso o phahameng ho hloka tlhahlobo e hlokolosi ea maemo a ts'ebetso, thepa, matla a mochini, le mekhoa ea ho kenya. Mocheso o feteletseng o ka ama ts'ebetso ea bolt haholo ka ho fokotsa matla a tsitsitseng, ho potlakisa oxidation, le ho baka deformation ea creep.
{0}Liboutu tsa boleng bo holimo- tse sa keneleng mocheso li ntlafatsa ts'epahalo ea lisebelisoa, li boloka manonyeletso a tsitsitse, le ho fokotsa kotsi ea ho se sebetse ho sa lebelloang. Lisebelisoa tse kang tšepe ea alloy, tšepe e sa hloekang, le li-alloys tsa nickel li fana ka ts'ebetso e phahameng ka ho fetisisa lits'ebetsong tse hlokahalang tsa indasteri.
Bareki ba liindasteri ha baa lokela ho shebana le litheko feela empa hape le ho tšoarella ha nako e telele-, litekanyetso tsa liteko, le ho tšepahala ho barekisi. Ka ho khetha liboutu tse etselitsoeng maemo a phahameng a mocheso, lik'hamphani li ka ntlafatsa polokeho ea ts'ebetso, tsa fokotsa litšenyehelo tsa tlhokomelo le ho lelefatsa bophelo ba ts'ebeletso ea lisebelisoa.
