Brake padske lisebelisoa tsa likhohlano tse behiloeng holim'a moqomo oa brake kapa disc e potolohang le lebili, moo lehare la likhohlano le boloko ba likhohlano li tlas'a khatello ea kantle ho hlahisa khohlano ho fihlela sepheo sa ho theola koloi.
The friction block ke thepa e khohlang e sutumetsoang ke clamp piston ebe e petetsoa holim'abrake disc, ka lebaka la phello ea likhohlano, "friction block" e tla apesoa butle-butle, ha re bua ka kakaretso, litšenyehelo tse tlase tsa li-brake pads li apara ka potlako.The friction block e arotsoe ka likarolo tse peli: thepa ea friction le base plate.Ka mor'a hore thepa ea friction e felisoe, sejana sa motheo se tla kopana ka ho toba le "brake disc", e tla qetella e lahlehetsoe ke matla a ho senya le ho senya "brake disc", 'me litšenyehelo tsa ho lokisa brake disc li theko e boima haholo.
Ka kakaretso, litlhoko tsa mantlha tsa li-brake pads ke haholo-holo ho hanyetsa ho roala, coefficient e kholo ea likhohlano, le thepa e ntle haholo ea ho kenya mocheso.
Ho ea ka mekhoa e fapaneng ea braking brake pads e ka aroloa ka: drum brake pads le disc brake pads, ho latela lisebelisoa tse fapaneng tsa brake pads ka kakaretso li ka aroloa ka mofuta oa asbestos, mofuta oa semi-metallic, mofuta oa NAO (ke hore lintho tse se nang asbestos type) brake pads le tse ling tse tharo.
Ka tsoelo-pele e potlakileng ea theknoloji ea sejoale-joale, joalo ka likarolo tse ling tsa brake system, li-brake pads ka botsona li ntse li fetoha le ho fetoha lilemong tsa morao tjena.
Ts'ebetsong ea setso ea tlhahiso, lisebelisoa tsa likhohlano tse sebelisoang ka li-brake pads ke motsoako oa likhomaretsi tse fapaneng kapa li-additives, tseo likhoele li kenyelletsoang ho tsona ho ntlafatsa matla a tsona le ho sebetsa joalo ka matlafatso.Baetsi ba li-brake pad ba atisa ho koala melomo ea bona ha ho tluoa tabeng ea phatlalatso ea thepa e sebelisoang, haholo-holo mekhoa e mecha.Phello ea ho qetela ea brake pad braking, ho hanyetsa ho roala, ho hanyetsa mocheso le thepa e meng e tla itšetleha ka likarolo tse lekanyelitsoeng tsa likarolo tse fapaneng.Se latelang ke puisano e khutšoane ea lisebelisoa tse fapaneng tse fapaneng tsa brake pad.
Li-brake pads tsa mofuta oa asbestos
Asbestos esale e sebelisoa e le lisebelisoa tse matlafatsang bakeng sa li-brake pads ho tloha qalong.Likhoele tsa asbestos li na le matla a phahameng le ho hanyetsa mocheso o phahameng, kahoo li ka finyella litlhoko tsa li-brake pads le clutch discs le linings.Likhoele li na le matla a phahameng a ho tsitsa, esita le ho ts'oana le tšepe ea boemo bo holimo, 'me li khona ho mamella mocheso ho fihla ho 316°C.Habohlokoa le ho feta, asbestos e batla e le theko e tlaase 'me e ntšoa ho amphibole ore, e fumanoang ka bongata linaheng tse ngata.
Asbestos e netefalitsoe ke bongaka e le ntho e bakang kankere.Likhoele tsa eona tse kang nale li ka kena matšoafong habonolo 'me tsa lula moo, li baka ho teneha' me qetellong li lebisa mofetšeng oa matšoafo, empa nako e patehileng ea lefu lena e ka nka lilemo tse 15-30, kahoo hangata batho ha ba lemohe kotsi e bakiloeng ke lefu lena. asbestos.
Hafeela likhoele tsa asbestos li tsitsitsoe ke thepa ea likhohlano ka boeona e ke ke ea baka likotsi tsa bophelo ho basebetsi, empa ha likhoele tsa asbestos li lokolloa hammoho le brake friction ho etsa lerole la brake, e ka fetoha letoto la litlamorao tsa bophelo bo botle.
Ho ea ka liteko tse entsoeng ke American Occupational Safety and Health Association (OSHA), nako le nako ha ho etsoa tlhahlobo ea kamehla ea likhohlano, li-brake pads li tla hlahisa limilione tsa likhoele tsa asbestos tse tsoang moeeng, 'me likhoele li nyane haholo ho feta moriri oa motho. e sa bonahaleng ka mahlo, kahoo phefumoloho e ka monya likete tsa likhoele tsa asbestos ntle le hore batho ba elelloe.Ka mokhoa o ts'oanang, haeba moropa oa brake kapa likarolo tsa brake ka lerōle la brake le fefolehile ka hose ea moea, e ka boela ea e-ba likhoele tse se nang palo tsa asbestos moeeng, 'me lerōle lena, le ke ke la ama bophelo bo botle ba mochine oa mosebetsi, e tšoanang le eona e tla baka. tshenyo ya bophelo bo botle ho basebetsi ba bang ba teng.Esita le mesebetsi e meng e bonolo haholo e kang ho otla moropa oa brake ka hamore ho o lokolla le ho tlohela lerōle la ka hare ho tsoa, le oona o ka hlahisa likhoele tse ngata tsa asbestos tse phaphametseng moeeng.Ho tšoenyang le ho feta ke hore hang ha likhoele li phaphametse moeeng li tla tšoarella lihora tse ngata ebe li khomarela liaparo, litafole, lisebelisoa le sebaka se seng le se seng seo u ka se nahanang.Nako le nako ha li kopana le lintho tse susumetsang (tse kang ho hloekisa, ho tsamaea, ho sebelisa lisebelisoa tsa moea ho etsa hore moea o phalle), li tla boela li phaphametse moeeng.Hangata, hang ha thepa ena e kena sebakeng sa mosebetsi, e tla lula moo ka likhoeli kapa esita le lilemo, e baka liphello tse ka bang teng tsa bophelo bo botle ho batho ba sebetsang moo esita le ho bareki.
American Occupational Safety and Health Association (OSHA) e boetse e bolela hore ho bolokehile feela hore batho ba sebetse tikolohong e se nang likhoele tsa asbestos tse fetang 0.2 ka square meter, le hore lerōle la asbestos le tsoang mosebetsing oa ho lokisa mariki le lokela ho fokotsoa le ho sebetsa. tse ka bakang ho lokolloa ha lerōle (joalo ka ho penya li-brake pads, joalo-joalo) li lokela ho qojoa ka hohle kamoo ho ka khonehang.
Empa ntle le karolo ea kotsi ea bophelo bo botle, ho na le bothata bo bong ba bohlokoa ka li-brake pads tse thehiloeng ho asbestos.Kaha asbestos ke adiabatic, mocheso oa eona oa mocheso o futsanehile ka ho khetheha, 'me tšebeliso e pheta-phetoang ea brake hangata e etsa hore mocheso o be teng ka har'a brake pad.Haeba li-brake pads li fihla boemong bo itseng ba mocheso, mariki a tla hlōleha.
Ha baetsi ba likoloi le barekisi ba thepa ea mariki ba etsa qeto ea ho hlahisa mekhoa e mecha e sireletsehileng ho feta asbestos, lisebelisoa tse ncha tsa likhohlano li ile tsa etsoa hoo e ka bang ka nako e le 'ngoe.Tsena ke "semi-metallic" e kopanyang le "non-asbestos organic" (NAO) brake pads e tšohloang ka tlase.
"Semi-metallic" hybrid brake pads
"Semi-met" li-brake pads tsa motsoako li entsoe haholo-holo ka boea ba tšepe e mahoashe e le fiber e matlafatsang le motsoako oa bohlokoa.Ho tloha ponahalong (likhoele tse ntle le likaroloana) ho bonolo ho khetholla mofuta oa asbestos ho li-brake pads tsa mofuta oa "asbestos" tse seng tsa asbestos (NAO), hape li na le tlhaho ea khoheli.
Matla a phahameng le conductivity ea mocheso oa boea ba tšepe bo etsa hore "semi-metallic" e kopantsoeng ka brake pads e be le litšobotsi tse fapaneng tsa braking ho feta li-asbestos tsa setso.Lintho tse phahameng tsa tšepe li boetse li fetola litšoaneleho tsa likhohlano tsa brake pad, eo hangata e bolelang hore "semi-metallic" brake pad e hloka khatello e phahameng ea braking ho fihlela phello e tšoanang ea braking.Lintho tse phahameng tsa tšepe, haholo-holo mochesong o batang, li boetse li bolela hore liphahlo li tla baka ho apara holimo ho li-discs kapa meropa, hammoho le ho hlahisa lerata le eketsehileng.
Monyetla o ka sehloohong oa "Semi-metal" brake pads ke bokhoni ba bona ba ho laola mocheso le mocheso o phahameng oa braking, ha o bapisoa le ts'ebetso e mpe ea ho fetisa mocheso oa mofuta oa asbestos le bokhoni bo bobe ba ho pholisa ba li-brake disc le meropa.Mocheso o fetisetsoa ho caliper le likarolo tsa eona.Ha e le hantle, haeba mocheso ona o sa tšoaroe hantle o ka baka mathata.Thempereichara ea brake fluid e tla nyoloha ha e futhumatsoa, 'me haeba mocheso o fihla boemong bo itseng o tla etsa hore brake e honyele le hore brake fluid e bele.Mocheso ona o boetse o na le phello ho caliper, piston seal le ho khutla selemo, e leng ho tla potlakisa botsofali ba likarolo tsena, e leng lebaka la ho tsosolosa caliper le ho nkela likarolo tsa tšepe sebaka nakong ea ho lokisoa ha brake.
Lintho tse se nang asbestos organic braking (NAO)
Lisebelisoa tsa brake tse se nang asbestos haholo-holo li sebelisa fiber ea khalase, fiber e nkhang hamonate ea polycool kapa likhoele tse ling (khabone, ceramic, joalo-joalo) e le lisebelisoa tsa ho matlafatsa, tseo ts'ebetso ea tsona e itšetlehileng haholo ka mofuta oa fiber le metsoako e meng e ekelitsoeng.
Lisebelisuoa tsa mariki tseo e seng tsa asbestos li ile tsa ntlafatsoa haholo-holo e le mokhoa o mong oa likristale tsa asbestos bakeng sa meropa ea mariki kapa lieta tsa mariki, empa morao tjena li ntse li lekoa e le sebaka sa li-brake pads tse ka pele.Mabapi le ts'ebetso, li-brake pads tsa mofuta oa NAO li haufi le li-brake pads tsa asbestos ho feta li-semi-metallic brake pads.Ha e na mokhoa o ts'oanang oa mocheso o motle oa mocheso le matla a ho laola mocheso o phahameng joaloka liphaephe tsa semi-metallic.
Nao e ncha e sebelisoa joang ha e bapisoa le li-brake pads tsa asbestos?Lisebelisoa tse tloaelehileng tse thehiloeng ho asbestos li na le metsoako e mehlano ho isa ho e supileng, e kenyelletsang likhoele tsa asbestos bakeng sa matlafatso, lisebelisoa tse fapaneng tsa tlatsetso, le li-binders tse kang oli ea linseed, resin, benzene sound awakening le resin.Ha ho bapisoa, lisebelisoa tsa NAO friction li na le metsoako e ka bang leshome le metso e supileng e fapaneng ea lithupa, hobane ho tlosa asbestos ha ho tšoane le ho e nkela sebaka ka ntho e 'ngoe, empa ho e-na le hoo ho hloka motsoako o moholo ho etsa bonnete ba hore ts'ebetso ea braking e lekana kapa e fetang matla a braking a li-blocks tsa asbestos.
Nako ea poso: Mar-23-2022