Qhov kev ua tau zoo thiab lub neej ntawm cov cab iav jacks feem ntau yog nyob ntawm cov khoom xaiv ntawm lawv cov khoom tseem ceeb. Kev tsim cov khoom tsim nyog tsis yog tsuas yog txhim kho kev thauj khoom- cov kabmob muaj peev xwm thiab kev sib kis tau zoo tab sis tseem muaj txiaj ntsig zoo los daws cov teeb meem ntawm kev hnav, corrosion, thiab thermal loads nyob rau hauv kev ua haujlwm sib txawv.
Cov cab iav feem ntau yog ua los ntawm siab -lub zog bronze lossis alloy tooj liab, xws li tin bronze thiab txhuas bronze. Cov ntaub ntawv no muaj kev sib txhuam zoo -txo thiab hnav- cov khoom tiv thaiv, tsim cov roj ua kom ruaj khov hauv kev sib cuag zawv zawg, txo cov coefficient ntawm kev sib txhuam thiab txo qhov kev pheej hmoo ntawm cov hniav scuffing. Tin bronze yog haum rau qis- mus rau - nruab nrab ceev, lub teeb - mus rau - nruab nrab load ib puag ncig thiab muaj corrosion kuj zoo heev; aluminium bronze muaj zog dua txhua yam thiab tsim nyog rau kev siv nrog kev thauj khoom siab lossis cuam tshuam. Rau qhov hnyav hnyav lossis ib puag ncig tshwj xeeb, tooj liab-raws li cov hmoov hlau metallurgy lossis cov txheej txheem nto plating tuaj yeem siv los txhim kho kev hnav tsis kam thiab tiv thaiv- muaj peev xwm ua kom muaj zog.
Cov cab iav feem ntau yog ua los ntawm cov qib siab -cov pa roj carbon zoo lossis cov hlau alloy steel, xws li 45 steel, 40Cr, thiab 20CrMnTi, thiab dhau los ua kev kub ntxhov lossis carburizing thiab quenching kev kho mob. Tempering txhim kho zuag qhia tag nrho toughness thiab cuam tshuam tsis kam, thaum nto hardening ho txhim khu cov hniav hardness thiab hnav tsis kam thaum tuav cov tub ntxhais toughness los tiv thaiv cov hniav tawg. Nyob rau hauv cov huab cua los yog corrosive media, cab iav tuaj yeem ua los ntawm cov hlau tsis muaj steel, xws li 304 lossis 316L, nrog cov lubrication tsim nyog thiab kev ntsuas kev sib khi kom ntseeg tau ntev - lub sijhawm ua haujlwm ruaj khov.
Cov vaj tse thiab cov khoom txhawb nqa feem ntau yog ua los ntawm grey cam khwb cia hlau lossis ductile hlau. Cov ntaub ntawv no muaj kev vibration zoo, kev ua haujlwm zoo, thiab cov nqi zoo, thiab tuaj yeem tiv taus cov khoom zoo li qub thiab qee qhov kev thauj khoom zoo. Rau lub teeb yuag lossis siab - cov qauv nruj, cov cam khwb cia hlau lossis welded steel qauv siv tau, tab sis kev ua haujlwm nyuaj thiab cov nqi yuav tsum tau txiav txim siab.
Cov kabmob thiab cov ncej feem ntau yog ua los ntawm siab -carbon chromium bearing steel xws li GCr15, uas, tom qab quenching thiab tempering, ua tiav siab hardness thiab qaug zog tiv thaiv, ua kom ntev - lub sij hawm ruaj khov ntawm kev sib kis. Cov yuam sij, pins, thiab lwm yam txuas txuas feem ntau yog ua los ntawm 45 # steel nrog tempering kho, ntsuas lub zog thiab tawv.
Kev xaiv cov khoom siv yuav tsum ua tib zoo xav txog qhov xwm txheej ntawm qhov load, kev khiav hauj lwm ceev, ambient kub, thiab xov xwm tej yam kev mob. Piv txwv li, siab - kub ua hauj lwm tej yam kev mob yuav tsum tau xaiv ntawm tshav kub- resistant steel thiab txuam nrog siab - kub resistant roj; Ib puag ncig corrosive heev yuav tsum ua qhov tseem ceeb ntawm cov hlau tsis muaj steel lossis nto tiv thaiv- kev kho corrosion. Los ntawm kev tshawb fawb thiab tsim nyog cov khoom sib txuam thiab cov txheej txheem kho cua sov, worm iav jacks tuaj yeem ua tiav lub neej ua haujlwm ntev thiab muaj kev ntseeg siab thaum ua kom muaj kev ua tau zoo, muab kev txhawb nqa rau ntau yam kev lag luam sib kis.
