Tam sim no, tsheb tau tsim los ntawm lub teeb yuag, kev nplij siab, solidity, siab zog, compact qauv, durability, zoo acceleration kev ua tau zoo thiab muaj kev ntseeg siab. Tsis tas li ntawd, vim kev nce qib ntawm kev tswj hluav taws xob thev naus laus zis, tsheb kuj tseem txhim kho nyob rau hauv cov kev taw qhia ntawm kev ua tau zoo xws li kev siv hluav taws xob tsawg, yooj yim thiab yooj yim, thiab muaj zog ua haujlwm. Yog li ntawd, ua ib feem tseem ceeb ntawm kev txhawb nqa tsheb, dov bearings yuav tsum tau hloov mus rau qhov sib txawv no.
Thaum lub sij hawm kev pab cuam ntawm lub tsheb bearing, lub dov lub caij thiab nto ntawm lub ferrule yuav tsum dais ib tug ntau ntawm lub siab ntawm chav tsev, uas yuav ua tau mus txog 5000N / mm2 los ntawm kev xam. Ntxiv rau qhov dov thiab zawv zawg thaum lub sijhawm ua haujlwm ntawm cov kabmob, ntxiv rau kev ua haujlwm siab, hloov pauv Ntxiv rau qhov kev sib cuag kev ntxhov siab, nws tseem cuam tshuam los ntawm lub zog centrifugal.
Raws li cov ntaub ntawv cov ntaub ntawv, lub ntsiab tsis ua hauj lwm hom ntawm lub tsheb bearings yog spalling, pitting, adhesion, strain, tawg, poob ntawm precision, ntau dhau vibration thiab suab nrov, thiab lwm yam. Yog li ntawd, kev ua tau zoo ntawm cov kabmob steel muaj cov hauv qab no:
①High purity.
② low oxygen content.
③High hardness and wear resistance.
④Good dimensional stability.
⑤ Sufficient compressive strength and deformation resistance.
⑥Good process performance.
Cov kabmob steel yog ib qho tseem ceeb tshwj xeeb steel ntau yam. Nws qhov zoo thiab kev ua tau zoo feem ntau cuam tshuam txog qib metallurgical ntawm lub teb chaws. Tsheb bearing steel suav txog li 40 feem pua ntawm cov khoom tsim tawm txhua xyoo ntawm cov kabmob steel, thiab tus nqi loj heev.
Lub neej thiab kev ntseeg siab ntawm cov tsheb bearings yog qhov tseeb hais txog kev tsim qauv, kev ua, lubrication, installation thiab txij nkawm, tab sis cov ntaub ntawv raw yog qhov tseem ceeb.
Nws tuaj yeem pom los ntawm cov saum toj no hais tias ntawm cov khoom tseem ceeb ntawm lub tsheb bearing sib dhos, tshwj tsis yog tias lub tawb hloov pauv los ntawm cov khoom qub stamping rau cov khoom siv nylon nrov (xws li txhaj tshuaj- molded PA66 ntxiv rau 30 feem pua GF) thiab cov ntsaws ruaj ruaj feem ntau yog ua los ntawm cov ntaub ntawv roj hmab (Ntxiv rau ACM ntxiv rau SPCC, NBR ntxiv rau SUS430), cov khoom dov thiab cov nplhaib sab hauv thiab sab nrauv ntawm cov tsheb bearings hauv kuv lub teb chaws tau siv dav hauv cov pa roj carbon chromium siab. -muaj cov kabmob steel uas muaj wC=0.95 feem pua 1.05 feem pua, wCr=1.40 feem pua 1.65 feem pua, txhawm rau txhim kho cov hardenability kom tau raws li qhov xav tau ntawm kev hloov pauv ntawm phab ntsa thickness ntawm qhov chaw, nce Mo cov ntsiab lus tuaj yeem tsim cov txheej txheem siab hardenability siab carbon chromium bearing steels:
Piv txwv li, 100Cr6, 100CrMo nyob rau hauv lub teb chaws Yelemees, SKF2, SKF3 nyob rau hauv Sweden, 52100.3, 52100.4 nyob rau hauv lub tebchaws United States, SUJ2, SUJ3, SUJ4, SUJ5 nyob rau hauv Nyiv, thiab lwm yam, yog haum rau martensitic quenching, thiab kuj haum rau bainite ultra quenching. -thick{14}}cov kabmob phab ntsa, muaj qhov sib txawv me ntsis ntawm cov tshuaj muaj pes tsawg leeg ntawm lawv, qhov tseeb, cov qib steel no tuaj yeem suav tias yog qhov txawv ntawm GCr15.
Txawm hais tias nws ntau yam yog qhov yooj yim, nws kuj yog qhov xav tau ntau yam hauv cov qauv hlau (cov iav steel, bearing steel, spring steel, non-quenched thiab tempered steel, txias taub hau steel).
Qhov tseem ceeb tshaj plaws yog txhawm rau txhim kho cov purity ntawm cov hlau thiab nruj me ntsis txo cov ntsiab lus ntawm cov kab mob xws li O, S, Ca, N, Ti, thiab lwm yam, thiab tswj xyuas qhov tsis xws luag uas yuav tshwm sim hauv cov txheej txheem ntawm cov khoom siv hlau xws li smelting, casting, dov, forging, thiab lwm yam. Smelting txheej txheem xws li nqus degassing, electroslag remelting, thiab tawm - ntawm - cub refining yog saws.
Nws yog qhov tsis txaus ntseeg qhov tseeb hauv kev lag luam uas txo cov ntsiab lus oxygen tuaj yeem ua rau lub neej qaug zog ntawm cov kabmob. Cov duab hauv qab no qhia txog kev sib raug zoo ntawm cov ntsiab lus oxygen thiab cov txheeb ze lub neej ntawm cov kabmob. Nyob rau hauv lub teb chaws tus qauv GB / T 18254-2002, O cov ntsiab lus ntawm high carbon chromium bearing steel yog kom meej meej stipulated: tuag casting steel Tsawg tshaj los yog sib npaug rau 15ppm, nruam casting steel tsawg dua los yog sib npaug rau 12ppm, thiab nyob rau hauv tiag tiag ntau lawm nrog lub txoj kev loj hlob ntawm cov khoom siv metallurgical thiab tshuab Kev tswj hwm nruj dua, qib qis tshaj tuaj yeem ncav cuag 5ppm.
Tsis tas li ntawd, tus qauv lossis kev pom zoo muaj feem cuam tshuam rau txoj kev smelting, tsis yog -metallic inclusions, segregation, decarburization layer, low magnification structure, microstructure, carbide inhomogeneity, deg quality, dimensional tolerance, etc. Thiab bearing manufacturers yuav tsum nruj me ntsis kuaj thiab tswj thaum hlau nkag thiab tawm hauv lub hoobkas.
Nws yuav tsum tau muab sau tseg tias, nyob rau hauv tas li ntawd mus rau feem ntau ntawm dov bearings, tsuas yog lub crankshaft bearing hav txwv yeem, txuas pas nrig bush, piston bushing, coj lub rooj rau shock absorber, gearbox rov qab iav bushing, thiab lwm yam yog zawv zawg bearings, uas tsis muaj kev koom tes. Kev kho cua sov yog tsim los ntawm cov hmoov metallurgy sintering ntxiv rau dov. Cov khoom siv feem ntau yog ua los ntawm cov hlau nrog wC Tsawg dua lossis sib npaug ntawm 0.15 feem pua ntawm sab nraub qaum (xws li 08Al), thiab cov hav txwv yeem loj yog txheej txheej alloy (xws li Al-Sn20Cu lossis hom tin-raws li, lead-raws li, tooj liab-raws li lossis aluminium-raws li cov kabmob alloys).
