Kev xaiv ntawm cov hlau rau cov camshoft yog qhov kev txiav txim siab tseem ceeb, vim tias nws cuam tshuam txog kev ua tau zoo, siv zog, thiab kev nyab xeeb ntawm kev nyab xeeb ntawm cov txheej txheem braking.
Firstly, High - lub zog cov hlau yog qhov tseem ceeb. Nres CamShafts eveieve tshuab kev ntxhov siab thaum lub sijhawm ua haujlwm. Piv txwv li, 4 {{0 b hlau, ib nrab-carbon alloy steel, yog qhov kev xaiv nrov. Nrog cov ntsiab lus carbon nyob ib ncig ntawm 0. {{}}. 44%, thiab kev sib ntxiv ntawm 1000 MPA tom qab kev kho cua sov. Lub zog loj no ua kom ntseeg tau tias lub camshaft tuaj yeem tiv thaiv cov rog loj heev thaum lub caij braking tsis muaj deformation lossis pob txha lov.
Thib ob, hnav - tsis kam yog tseem ceeb heev. Kev tiv tauj txuas ntxiv thiab kev sib txhuam nyob ntawm camshaft thiab lwm yam kev thov cov khoom siv steel nrog hnav zoo - resistant cov khoom. GCR15 cov hlau, ib lub siab - carbon chromium cov kabmob hlau, yog zoo - paub txog nws lub siab hardness thiab hnav tsis kam. Nws lub hardness tuaj yeem ncav cuag hrc 61 - 65, txo kev puas tsuaj thiab nthuav tawm lub neej ntawm camshaft.
Ntxiv mus, zoo machinability tseem yog qhov tseem ceeb. Cov hlaus zoo li 45 hlau, ib qho nruab nrab - carbon steel, yog qhov yooj yim rau lub cav. Lawv tuaj yeem ua tiav cov txheej txheem ua tau zoo los ntawm kev txiav, thiab lwm yam txheej txheem tsim khoom, uas pab kom txo qis cov nqi thiab txhim kho ntau dua.
Hauv kev xaus, thaum xaiv cov hlau rau cov camshats nres, muaj kev txiav txim siab zoo, yog tsim nyog, yog tsim nyog, yog tsim nyog los ntseeg tau kev ua tau zoo thiab kev ntseeg tau ntawm lub zog braking.
