Tus nqi nrawm nrawm: Vim muaj cov yam ntxwv xws li machining, sib dhos, thiab kev hloov kho ntawm cov khoom siv tshuab tshiab, kev sib txhuam ntawm qhov chaw yog ntxhib, qhov chaw sib cuag ntawm qhov chaw mating yog me me, thiab qhov sib txawv ntawm qhov siab tsis sib xws. Thaum lub sijhawm ua haujlwm, cov ntsiab lus siab thiab qis ntawm cov khoom siv sib txuas thiab rub tawm ib leeg; lub resulting hlau khib nyiab ua raws li ib tug abrasive, ntxiv accelerating hnav nyob rau hauv mating nto. Yog li ntawd, cov khoom siv -tshwj xeeb tshaj yog mating nto- yog nquag hnav thaum lub sij hawm so- nyob rau hauv lub sij hawm. Kev khiav hauj lwm nyob rau hauv cov xwm txheej overload nyob rau theem no tuaj yeem ua rau cov khoom puas tsuaj thiab ua tsis tiav ntxov.
Lub lubrication tsis zoo: Vim tias cov mating clearances ntawm cov khoom sib dhos tshiab yog nruj, thiab ua tiav cov kev tshem tawm tsis zoo yog qhov nyuaj vim yog cov khoom sib dhos, nws yog ib qho nyuaj rau lubricating roj los yog roj los ua ib qho kev sib tsoo ntawm qhov chaw sib txhuam kom tsis txhob hnav. Qhov no txo cov lubrication efficiency, ua rau ntxov ntxov, txawv txav ntawm cov khoom. Nyob rau hauv cov xwm txheej hnyav, precision mating nto tej zaum yuav khawb los yog ntes, ua rau cov cuab yeej tsis ua hauj lwm.
Loosening: Newly machined thiab assembled Cheebtsam feem ntau muaj deviations nyob rau hauv geometric duab thiab mating qhov ntev. Thaum lub sij hawm pib ntawm kev siv, yam xws li alternating loads (kev cuam tshuam thiab kev co), thermal expansion, deformation, thiab ceev hnav yuav ua rau yav tas los nruj cov khoom kom loosen.
Leakage: Loosing ntawm cov khoom, kev co, thiab thermal cuam tshuam tuaj yeem ua rau cov dej xau ntawm qhov chaw sib khi thiab cov yeeb nkab txuas. Qee qhov casting lossis machining defects tej zaum yuav nyuaj rau kev tshawb pom thaum lub sijhawm sib dhos thiab kev sim tab sis pom meej raws li kev vibration thiab cuam tshuam ntawm kev ua haujlwm tiag tiag - tshwm sim raws li cov roj lossis dej xau. Yog li ntawd, kev xau yog tshwm sim thaum lub sijhawm so - nyob rau lub sijhawm.
Kev ua haujlwm yuam kev: Vim kev nkag siab tsis txaus ntawm lub tshuab cov qauv thiab kev ua tau zoo -tshwj xeeb ntawm cov neeg ua haujlwm tshiab- kev ua haujlwm yuam kev feem ntau tshwm sim, uas yuav ua rau cov khoom siv tsis raug lossis txawm tias muaj xwm txheej loj heev.
