Sinotruk KC1560030012 336/371HP Cav kho cov khoom Sinotruk Howo Cav qhov chaw lub tog raj kheej liner, piston thiab piston rings cav cov khoom siv

Kev Paub Txog Muaj Cai

Kev sib koom ua ke ntawm plaub qhov no ncaj qha cuam tshuam rau tag nrho kev ua si ntawm lub cav ua haujlwm, nrog rau kev pabcuam lub neej thiab kev ntseeg siab ntawm lub cav.Plaub qhov sib txuam yog qhov zoo tshaj plaws los ua ke los ntawm kev xaiv, uas tsis tsuas yog txuag cov teeb meem ntawm kev yuav khoom ntau yam, tab sis kuj tshem tawm cov teeb meem tsis tsim nyog vim yog xaiv ntau yam, uas tuaj yeem txo qhov tsis ua haujlwm ntawm lub cav thiab txhim kho lub zog. ntawm lub cav, thiaj li mus ntev lub neej kev pab cuam.Nws yog hlub thiab nyiam los ntawm feem coob ntawm cov neeg siv khoom hauv kev lag luam tom qab muag.

Cov kev ua haujlwm ntawm lub piston yog hnyav heev.Sab saum toj yog nyob rau hauv kev sib cuag nrog high-temperature gas thiab bears qhov kev kub siab thiab inertial quab yuam tshwm sim los ntawm high-speed reciprocating motion.Txhua qhov ntawm tag nrho cov piston yog raug rau lub zog thiab torque ntawm nro, compression thiab dabtsi yog khoov, thiab cov cua kub tsis sib xws.Yog li ntawd, lub piston yuav tsum muaj me me loj, me me thermal expansion, zoo tshav kub hloov thiab hnav tsis kam.Lub piston tsim los ntawm peb yog ua los ntawm txhuas alloy, uas yog cov khoom xaiv rau lub tsheb piston tam sim no.Lub piston yuav tsum sib haum nrog lub tog raj kheej phab ntsa.Ntxig lub nplhaib piston rau ntawm lub piston yog qhov ntsuas los daws qhov teeb meem no.Lub nplhaib piston muab faib ua roj nplhaib thiab roj nplhaib.Tus qub tiv thaiv cov sib tov sib xyaw los ntawm channeling rau hauv crankcase;Lub tom kawg yog ua los ntawm alloy cam khwb cia hlau, nrog inclined lub qhov ncauj thiab elasticity.Thaum nws yog lub tes tsho ntawm lub piston, nws muaj cov yam ntxwv ntawm kev ncab tawm sab nraud thiab clinging rau lub tog raj kheej phab ntsa.Yog li ntawd, peb lub nplhaib piston yog ua los ntawm txhuas alloy kom nws elasticity.Cov khoom siv ntawm lub tog raj kheej liner yuav tsum tsis tsuas yog muaj zog txhua yam thiab kub, tab sis kuj muaj kev hnav zoo, corrosion kuj, roj tuav thiab lubricity, ntawm qhov tseem ceeb tshaj plaws yog hnav tsis kam.Tam sim no, cov khoom siv feem ntau ntawm lub tog raj kheej liner yog nodular cam khwb cia hlau, siab phosphorus cam khwb cia hlau thiab alloy cam khwb cia hlau.Cov khoom siv ntawm tus pin piston feem ntau yog cov pa roj carbon tsawg lossis cov pa roj carbon tsawg.15, 20, 15Cr, 20Cr thiab 20Mn2 steels feem ntau yog siv nyob rau hauv cov cav uas tsis tshua muaj load.Cov qib siab alloy steels, xws li crni3a, 18cr mnti2 thiab 20si MnVB, yog siv rau cov cav tov muaj zog.Qee zaum 45 nruab nrab carbon steel kuj siv tau.Txhawm rau ua kom cov txheej txheej sab nrauv ntawm piston tus pin nyuaj thiab hnav-tiv taus, piston tus pin xav tau kev kho cua sov.Carburize thiab quench lub sab nrauv ntawm piston tus pin ua los ntawm cov hlau tsis tshua muaj carbon.Raws li qhov loj ntawm piston tus pin, qhov tob ntawm carburized txheej feem ntau nyob rau hauv thaj tsam ntawm 0.5-2 hli.Rau 45 steel piston tus pin, nto quenching yog nqa tawm, thiab qhov tob ntawm quenching txheej yog 1-1.5 hli.