Yuav ua li cas xaiv cov ntaub ntawv bearing kom raug

Hauv kev tsim kho tshuab, cov kabmob, ua cov khoom tseem ceeb ntawm kev sib kis, lawv cov khoom xaiv ncaj qha txiav txim siab qhov ua tau zoo, lub neej ntev thiab kev ntseeg siab ntawm cov khoom siv. Tsab xov xwm no yuav piav qhia txog cov ntsiab lus tseem ceeb ntawm kev xaiv cov khoom siv kabmob los ntawm cov yam xws li cov khoom siv xav tau, cov ntsiab cai xaiv, cov txheej txheem, cov qauv, thiab kev tshuaj xyuas rooj plaub, thiab tshawb nrhiav cov txiaj ntsig ntawm kev xaiv cov khoom siv tsis raug los pab cov engineers thiab cov kws tshaj lij hauv kev lag luam hauv kev ua kom zoo dua lawv cov tswv yim xaiv.

Cov Kev Cai Tseem Ceeb rau Cov Khoom Siv Bearing

Cov ntaub ntawv bearing yuav tsum ua tau raws li ntau yam kev ua tau zoo kom ntseeg tau tias lawv ua haujlwm ruaj khov hauv qab cov xwm txheej ua haujlwm nyuaj:

1. Muaj kev huv siab thiab cov roj tsawg

Cov khoom uas tsis yog hlau (xws li oxides thiab nitrides) hauv cov hlau bearing tuaj yeem ua rau muaj kev ntxhov siab, ua rau qaug zog spalling lossis microcracks. Cov thev naus laus zis niaj hnub no txo ​​cov pa oxygen kom qis dua 10ppm los ntawm kev siv lub tshuab nqus tsev deoxidation thiab kev ua kom huv si, ua rau cov khoom siv lub neej ntev dua.

2. Cov tshuaj lom neeg sib xyaw ua ke thiab kev faib tawm carbide

Cov carbides uas tau ua kua dej, cov carbides uas muaj banded thiab cov carbides network tuaj yeem txo qhov kev siv zog ntawm cov khoom siv. Piv txwv li, thaum qhov kev ntsuas banded carbide ncav cuag qib 3 txog 4, lub neej siv yuav txo qis 30%.

3. Kev ua haujlwm siab thiab kev hnav tsis kam

Qhov nyuaj ntawm cov hlau chromium uas siv ntau (xws li GCr15) yuav tsum ncav cuag HRc61 txog 65 kom tiv taus cov khoom thauj siab thiab kev sib txhuam ceev.

4. Kev ruaj khov ntawm qhov ntev thiab kev ua haujlwm thermal

Cov khoom siv yuav tsum muaj cov coefficient qis ntawm kev nthuav dav thermal thiab kev ua kom sov zoo kom tiv thaiv kev hloov pauv ntawm qhov kub siab. Cov hlau bearing uas tiv taus cua sov (xws li Cr4Mo4V) tuaj yeem hloov kho rau qhov chaw siab dua 250 ℃.

5. Kev tiv thaiv corrosion

Cov hlau tsis xeb (xws li 440C) lossis cov khoom siv ceramic yog qhov tsim nyog rau cov chaw muaj corrosive, xws li cov khoom siv tshuaj lom neeg lossis cov platforms offshore.

Cov Ntsiab Cai rau Kev Xaiv Cov Khoom Siv Bearing

1. Txoj cai sib phim kev ua tau zoo

Xaiv cov ntaub ntawv raws li cov xwm txheej ua haujlwm xws li qhov hnyav, qhov ceev ntawm kev sib hloov thiab qhov kub. Piv txwv li:

Kev cuam tshuam loj: Cov hlau bearing carburized (xws li 20CrNiMo) ua rau muaj kev tiv thaiv kev cuam tshuam los ntawm kev ua kom tawv ntawm qhov chaw.

Ib puag ncig kub siab: Cov hlau uas tiv taus cua sov (xws li M50) lossis cov khoom siv ceramic (xws li Si3N4) tuaj yeem tiv taus qhov kub siab tshaj 300 ℃.

2. Txoj cai kev lag luam

Sib npaug tus nqi thiab kev ua tau zoo ntawm cov ntaub ntawv. Piv txwv li, GCr15 yog qhov nyiam dua li cov khoom siv ceramic kim heev rau cov xwm txheej ua haujlwm ib txwm muaj.

3. Lub hauv paus ntsiab lus ntawm kev ntseeg siab

Cov ntaub ntawv yuav tsum dhau qhov kev xeem nruj (xws li qhov ntsuas kev huv thiab carbide uniformity) kom ntseeg tau tias kev ua haujlwm ruaj khov mus sij hawm ntev.

4. Lub hauv paus ntsiab lus ntawm kev ruaj khov

Muab qhov tseem ceeb rau kev xaiv cov khoom siv rov ua dua tshiab (xws li hlau) lossis cov txheej txheem siv hluav taws xob tsawg (xws li kev nqus tsev smelting) kom txo tau lub nra hnyav rau ib puag ncig.

Cov Txheej Txheem thiab Cov Qauv rau Kev Xaiv Cov Khoom Siv Bearing

1. Cov txheej txheem xaiv khoom siv raws li cov xwm txheej ua haujlwm

Kauj Ruam 1: Piav qhia meej txog cov xwm txheej ua haujlwm

Xws li hom thauj khoom (static / dynamic), qhov ceev tig, qhov kub thiab txias, txoj kev lubrication thiab ib puag ncig nruab nrab.

Kauj Ruam 2: Sib phim cov khoom siv

Kev kub ceev thiab lub teeb-load: Cov yas tawb (xws li nylon 66 uas muaj zog) txo qhov kev sib txhuam.

Cov khoom siv hnyav thiab muaj kev cuam tshuam loj: Cov hlau Carburized lossis cov hlau uas tiv taus kev cuam tshuam nruab nrab (xws li G20CrNi2Mo).

Kauj Ruam 3: Xyuas kom meej cov qauv khoom siv

Saib cov qauv hauv tebchaws (xws li GB / T 3203) lossis cov qauv thoob ntiaj teb (xws li ISO 683-17) kom paub tseeb tias qhov nyuaj thiab huv ntawm cov ntaub ntawv ua tau raws li cov qauv.

2. Cov qauv ntsuas kev ua tau zoo tseem ceeb

Cov ntsuas yuav tsum tau siv txoj kev nrhiav pom

Qhov kev xeem Rockwell hardness rau GCr15 steel rings yog HRc61 txog 65

Cov ntsiab lus oxygen ≤10ppm (rau cov hlau zoo) txoj kev yaj roj inert

Cov qib carbide: band ≤2 qib, network ≤2.5 qib. Kev tshuaj xyuas metallographic microscope

Kev Tshuaj Xyuas Cov Ntaub Ntawv: Xaiv Cov Khoom Siv Rau Cov Xwm Txheej Siv Ib Txwm Muaj

Rooj plaub 1: Lub tshuab cua loj Ncej Bearings

Cov xwm txheej ua haujlwm: Kev sib hloov ceev ceev, lub nra hnyav, pib thiab nres ntau zaus.

Kev xaiv cov khoom siv: Cov hlau carburized (xws li 18CrNiMo7-6) nrog rau qhov chaw tawv, lub hauv paus ruaj khov, thiab nce 40% ntawm lub neej tiv taus kev nkees.

Rooj Plaub 2: Cov Bearings rau Cov Tshuab Khoom Noj

Cov Kev Cai: Tiv taus corrosion thiab yooj yim los ntxuav.

Kev xaiv cov khoom siv: Cov hlau tsis xeb (xws li 440C) lossis cov khoom siv ceramic kom tsis txhob muaj xeb thiab ua qias tuaj.

Cov txiaj ntsig ntawm kev xaiv cov khoom siv tsis raug

1. Lub neej ua haujlwm luv dua

Cov khoom tsis huv ntau dhau lossis kev faib tawm tsis sib xws ntawm cov carbides ua rau qaug zog spalling, txo lub neej kev pabcuam los ntawm 30% txog 50%.

2. Ua tsis tiav tam sim ntawd

Cov hydrogen ntau dhau ua rau muaj cov kab tawg dawb, thiab cov kabmob tam sim ntawd tawg thaum lub sijhawm ua haujlwm.

3. Cov nqi ntxiv

Kev hloov cov bearings ntau zaus ua rau lub sijhawm tsis ua haujlwm poob qis. Yog tias xaiv cov khoom siv tiv taus kub siab tsis raug, nws yuav ua rau cov khoom siv hluav taws kub.

Cov Khoom Siv Bearing thiab Cov Xwm Txheej Siv Tau

Cov yam ntxwv ntawm qib thiab cov xwm txheej siv ntawm cov khoom siv

Cov hlau chromium siab GCr15 yog cov kabmob kev lag luam dav dav uas muaj kev kub ntxhov thiab hnav tsis kam.

Cov hlau carburized 20Cr2Ni4A yog qhov cuam tshuam-resistant thiab nto-hardened rau kev tsheb ciav hlau locomotive thiab dov zeb bearings

Cov hlau tsis xeb 440C/9Cr18 cov khoom siv khoom noj khoom haus thiab tshuaj lom neeg uas tiv taus xeb

Ceramic Si3N4 / ZrO2 kub-resistant, low-density high-speed spindle, aerospace

Yas engineering PA66 + GF30 tus kheej-lubricating, suab nrov tsawg cov khoom siv hauv tsev, lub cev muaj zog me me

Los ntawm cov tswv yim xaiv cov khoom siv thiab cov qauv siv, kev ua tau zoo ntawm cov bearings tuaj yeem txhim kho tau zoo heev thiab cov nqi tuaj yeem txo qis. Yog tias koj xav paub ntau ntxiv txog cov ntsiab lus kev siv tshuab lossis xav paub ntxiv txog cov kev daws teeb meem ntawm cov bearings, thov koj xav tiv tauj peb.