Kev Xaiv Khoom Siv Rau Cov Chains Roller Hauv Qhov Chaw Kub Siab

Kev Xaiv Khoom Siv Rau Cov Chains Roller Hauv Qhov Chaw Kub Siab

Hauv kev lag luam xws li kev kho cua sov hauv hlau, kev ci zaub mov, thiab kev lag luam roj av,cov saw hlau, ua cov khoom siv tseem ceeb ntawm kev sib kis, feem ntau ua haujlwm tas li hauv qhov chaw siab tshaj 150 ° C. Qhov kub thiab txias heev tuaj yeem ua rau cov saw hlau ib txwm mos, oxidize, xeb, thiab tsis ua kom lubrication. Cov ntaub ntawv kev lag luam qhia tau hais tias cov saw hlau uas xaiv tsis raug tuaj yeem ua rau lawv lub neej luv dua 50% nyob rau hauv qhov kub thiab txias, txawm tias ua rau cov khoom siv tsis ua haujlwm. Tsab xov xwm no tsom mus rau qhov yuav tsum tau ua haujlwm ntawm cov saw hlau hauv qhov chaw kub thiab txias, tshuaj xyuas cov yam ntxwv thiab kev xaiv ntawm ntau yam khoom siv tseem ceeb los pab cov kws tshaj lij kev lag luam ua tiav kev txhim kho ruaj khov rau lawv cov kab ke sib kis.

I. Cov Teeb Meem Tseem Ceeb ntawm Qhov Kub thiab Txias rau Cov Hlau Roller

Qhov kev puas tsuaj rau cov saw hlau uas ua los ntawm qhov kub thiab txias yog ntau yam. Cov teeb meem tseem ceeb yog ob qho: kev ua haujlwm ntawm cov khoom siv tsis zoo thiab kev ruaj khov ntawm cov qauv tsis zoo. Cov no kuj yog cov teeb meem kev siv tshuab uas kev xaiv cov khoom siv yuav tsum kov yeej:

- Kev puas tsuaj ntawm cov khoom siv kho tshuab: Cov hlau carbon ib txwm mos dua li 300 ℃, nrog rau lub zog tensile txo qis los ntawm 30% -50%, ua rau cov saw hlau tawg, tus pin deformation, thiab lwm yam kev ua tsis tiav. Cov hlau tsis muaj hlau tsawg, ntawm qhov tod tes, muaj kev hnav sai dua vim yog kev sib xyaw ua ke ntawm qhov kub siab, ua rau cov saw hlau ntev dua qhov txwv tsis pub ua.

- Kev Ua Oxidation thiab Kev Xeb Ntau Ntxiv: Cov pa oxygen, cov dej ua pa, thiab cov xov xwm kev lag luam (xws li cov pa roj acidic thiab cov roj) nyob rau hauv qhov chaw kub siab ua rau cov saw hlau xeb sai dua. Cov nplai oxide uas tshwm sim tuaj yeem ua rau lub pob khawm jamming, thaum cov khoom xeb txo cov roj nplua nyeem.

- Kev Ua Tsis Tau Zoo ntawm Lub Tshuab Lubrication: Cov roj av uas siv los ua lubricating yuav yaj thiab ua carbonizes thaum kub tshaj 120 ℃, ua rau nws cov roj nplua nyeem poob qis. Qhov no ua rau muaj kev sib txhuam ntawm cov rollers thiab cov pins, ua rau tus nqi hnav nce ntxiv 4-6 zaug.

- Kev Sib Tw Sib Tw Txog Kev Nthuav Dav Kub: Yog tias cov coefficients ntawm kev nthuav dav kub ntawm cov khoom sib txuas (cov phaj saw, cov koob, cov menyuam) sib txawv ntau, qhov sib txawv yuav dav dua lossis cov saw yuav ntes tau thaum lub sijhawm kub hloov pauv, cuam tshuam rau qhov tseeb ntawm kev sib kis.

II. Cov Hom Khoom Siv Tseem Ceeb thiab Kev Tshawb Fawb Txog Kev Ua Haujlwm ntawm Cov Saw Hlau Kub Siab

Vim yog cov yam ntxwv tshwj xeeb ntawm kev ua haujlwm kub siab, cov ntaub ntawv tseem ceeb ntawm cov saw hlau tau tsim peb lub kaw lus tseem ceeb: hlau tsis xeb, hlau tiv taus cua sov, thiab cov hlau nickel. Txhua yam khoom muaj nws lub zog hauv kev tiv taus kub siab, lub zog, thiab kev tiv taus xeb, xav tau kev sib phim meej raws li cov xwm txheej ua haujlwm tshwj xeeb.

1. Cov Hlau Stainless: Kev Xaiv Uas Pheej Yig Rau Cov Kev Ua Haujlwm Nruab Nrab- thiab Kub Siab

Cov hlau tsis xeb, nrog nws txoj kev tiv taus oxidation zoo heev thiab tiv taus corrosion, tau dhau los ua cov khoom siv nyiam rau qhov kub nruab nrab thiab siab hauv qab 400 ℃. Ntawm lawv, 304, 316, thiab 310S qib yog cov siv dav tshaj plaws hauv kev tsim cov saw hlau. Qhov sib txawv ntawm kev ua tau zoo feem ntau yog los ntawm qhov sib piv ntawm chromium thiab nickel.

Yuav tsum nco ntsoov tias cov saw hlau tsis xeb tsis yog "tsis muaj qhov yuam kev." 304 stainless hlau ua rau muaj kev kub ntxhov siab tshaj 450 ℃, ua rau muaj kev xeb intergranular. Txawm hais tias 310S tiv taus cua sov, nws tus nqi yog kwv yees li 2.5 npaug ntawm 304, uas yuav tsum tau xav txog qhov yuav tsum tau ua neej ntev.

2. Cov Hlau Uas Tiv Thaiv Kub: Cov Thawj Coj Lub Zog ntawm Qhov Kub Heev

Thaum qhov kub ua haujlwm tshaj 800 ℃, lub zog ntawm cov hlau tsis xeb ib txwm txo qis heev. Ntawm lub sijhawm no, cov hlau tiv taus cua sov nrog cov chromium thiab nickel ntau dua dhau los ua qhov kev xaiv tseem ceeb. Cov ntaub ntawv no, los ntawm kev hloov kho rau cov piv ntawm cov khoom sib xyaw, tsim cov zaj duab xis oxide ruaj khov ntawm qhov kub siab thaum tswj hwm lub zog nkag zoo:

- 2520 Hlau Uas Tiv Thaiv Kub (Cr25Ni20Si2): Ua ib yam khoom siv kub thiab txias uas siv ntau, nws qhov kub thiab txias mus sij hawm ntev tuaj yeem ncav cuag 950 ℃, ua rau pom kev ua tau zoo heev hauv cov huab cua carburizing. Tom qab kev kho mob chromium diffusion saum npoo, kev tiv thaiv corrosion tuaj yeem txhim kho ntxiv los ntawm 40%. Nws feem ntau siv rau hauv ntau lub hom phiaj cua sov conveyor thiab iav pre-oxidation cua sov conveyor systems. Nws lub zog tensile ≥520MPa thiab elongation ≥40% zoo tiv taus cov qauv deformation ntawm qhov kub siab.

- Cr20Ni14Si2 hlau tiv taus cua sov: Nrog cov ntsiab lus nickel qis dua 2520 me ntsis, nws muab kev xaiv pheej yig dua. Nws qhov kub ua haujlwm tas mus li tuaj yeem ncav cuag 850 ℃, ua rau nws tsim nyog rau cov ntawv thov kub siab uas muaj kev cuam tshuam nrog tus nqi xws li kev tsim iav thiab kev thauj khoom siv refractory. Nws qhov tseem ceeb yog nws cov coefficient ruaj khov ntawm kev nthuav dav thermal, ua rau muaj kev sib raug zoo dua nrog cov ntaub ntawv sprocket thiab txo qhov kev poob siab kis.

3. Cov hlau nickel-based alloy series: Qhov kev daws teeb meem zoo tshaj plaws rau kev ua haujlwm hnyav

Nyob rau hauv cov xwm txheej hnyav tshaj 1000 ℃ lossis nyob rau hauv qhov muaj cov xov xwm corrosive heev (xws li kev kho cua sov ntawm cov khoom siv aerospace thiab cov khoom siv nuclear kev lag luam), cov hlau nickel-based yog cov khoom siv tsis muaj qhov hloov pauv vim lawv qhov kev ua tau zoo tshaj plaws hauv qhov kub siab. Cov hlau nickel-based, piv txwv li Inconel 718, muaj 50% -55% nickel thiab tau txhawb nqa nrog cov ntsiab lus xws li niobium thiab molybdenum, tswj cov khoom siv kho tshuab zoo heev txawm tias ntawm 1200 ℃.

Cov txiaj ntsig tseem ceeb ntawm cov hlau nickel-based alloy roller chains yog: ① Lub zog creep yog ntau dua peb npaug ntawm 310S stainless hlau; tom qab 1000 teev ntawm kev ua haujlwm tas mus li ntawm 1000 ℃, kev hloov pauv tas mus li yog ≤0.5%; ② Kev tiv thaiv corrosion muaj zog heev, tuaj yeem tiv taus cov xov xwm corrosive muaj zog xws li sulfuric acid thiab nitric acid; ③ Kev ua haujlwm qaug zog zoo heev thaum kub siab, haum rau cov xwm txheej kub ntau zaus. Txawm li cas los xij, lawv tus nqi yog 5-8 npaug ntawm 310S stainless hlau, thiab lawv feem ntau siv rau hauv cov kab ke kis tau zoo.

4. Cov Khoom Siv Pabcuam thiab Kev Kho Mob Nto

Ntxiv rau qhov kev xaiv ntawm cov substrate, cov txheej txheem kho qhov chaw yog qhov tseem ceeb rau kev txhim kho kev ua haujlwm kub siab. Tam sim no, cov txheej txheem tseem ceeb suav nrog: ① Chromium infiltration: tsim cov zaj duab xis Cr2O3 oxide ntawm qhov saw hlau, txhim kho kev tiv thaiv corrosion los ntawm 40%, haum rau cov chaw tshuaj lom neeg kub siab; ② Nickel-based alloy tsuag txheej: rau cov khoom yooj yim hnav xws li pins thiab rollers, qhov nyuaj txheej tuaj yeem ncav cuag HRC60 lossis siab dua, txuas ntxiv lub neej kev pabcuam los ntawm 2-3 zaug; ③ Ceramic txheej: siv rau hauv cov xwm txheej saum toj no 1200 ℃, zoo cais cov oxidation kub siab, haum rau kev lag luam metallurgical.

III. Kev xaiv cov khoom siv thiab cov lus qhia ua tau zoo rau cov saw hlau kub siab

Kev xaiv cov khoom siv tsis yog hais txog kev nrhiav "qhov siab dua qhov tiv taus kub, qhov zoo dua," tab sis xav tau tsim kom muaj plaub-hauv-ib qho kev ntsuam xyuas ntawm "kub-load-medium-cost." Cov hauv qab no yog cov lus qhia rau kev xaiv hauv ntau qhov xwm txheej sib txawv:

1. Piav qhia txog Cov Txheej Txheem Ua Haujlwm Tseem Ceeb

Ua ntej xaiv, peb qhov tseem ceeb yuav tsum tau sau kom raug: ① Qhov kub thiab txias (qhov kub ua haujlwm tas mus li, qhov kub siab tshaj plaws, thiab zaus voj voog); ② Cov xwm txheej thauj khoom (lub zog ntsuas, qhov cuam tshuam thauj khoom coefficient); ③ Ib puag ncig nruab nrab (muaj cov pa dej, cov pa roj acidic, roj, thiab lwm yam). Piv txwv li, hauv kev lag luam ci khoom noj, ntxiv rau kev tiv taus qhov kub siab ntawm 200-300 ℃, cov saw hlau kuj yuav tsum ua tau raws li FDA cov qauv kev huv. Yog li ntawd, 304 lossis 316 stainless hlau yog qhov kev xaiv zoo tshaj plaws, thiab yuav tsum zam cov txheej txheem uas muaj cov hlau lead.

2. Kev xaiv los ntawm Qhov Kub thiab Txias

- Qhov Kub Nruab Nrab (150-400 ℃): 304 stainless hlau yog qhov kev xaiv zoo tshaj plaws; yog tias muaj xeb me ntsis, hloov mus rau 316 stainless hlau. Kev siv cov roj kub siab rau zaub mov (haum rau kev lag luam zaub mov) lossis cov roj graphite (haum rau kev siv hauv kev lag luam) tuaj yeem ua rau lub neej ntawm cov saw hlau ntev dua peb npaug ntawm cov saw hlau ib txwm muaj.

- Qhov Kub Siab (400-800 ℃): 310S stainless hlau lossis Cr20Ni14Si2 hlau tiv taus cua sov yog qhov kev xaiv tseem ceeb. Nws raug pom zoo kom plating cov saw hlau thiab siv cov roj graphite kub siab (tsis kam rau qhov kub ≥1000 ℃), rov ua kom lubrication txhua 5000 lub voj voog.

- Qhov kub thiab txias siab heev (saum toj 800 ℃): Xaiv 2520 hlau uas tiv taus cua sov (nruab nrab mus rau siab kawg) lossis Inconel 718 nickel-based alloy (siab kawg) raws li cov peev nyiaj. Hauv qhov no, yuav tsum muaj tus qauv tsim uas tsis muaj lubrication lossis cov roj nplua nyeem khov (xws li molybdenum disulfide txheej) kom tsis txhob muaj kev ua tsis tiav ntawm lubrication.

3. Ua kom pom tseeb txog kev sib phim ntawm cov ntaub ntawv thiab cov qauv

Qhov sib xws ntawm kev nthuav dav thermal ntawm txhua yam khoom saw yog qhov tseem ceeb ntawm qhov kub siab. Piv txwv li, thaum siv 310S stainless hlau saw phaj, cov pins yuav tsum tau ua los ntawm cov khoom siv tib yam lossis muaj cov coefficient zoo sib xws ntawm kev nthuav dav thermal li 2520 cov hlau tiv taus cua sov kom tsis txhob muaj qhov tsis sib xws los ntawm kev hloov pauv kub. Tib lub sijhawm, cov menyuam khov kho thiab cov qauv saw phaj tuab yuav tsum tau xaiv los txhim kho kev tiv thaiv kev hloov pauv ntawm qhov kub siab.

4. Cov qauv siv nyiaj kom zoo rau kev sib npaug ntawm kev ua tau zoo thiab tus nqi

Hauv cov xwm txheej ua haujlwm tsis hnyav heev, tsis tas yuav xaiv cov khoom siv zoo. Piv txwv li, hauv cov cub tawg kho cua sov ib txwm muaj hauv kev lag luam hlau (kub 500 ℃, tsis muaj xeb muaj zog), tus nqi ntawm kev siv 310S stainless hlau saw yog kwv yees li 60% ntawm 2520 hlau tiv taus cua sov, tab sis lub neej tsuas yog txo qis 20%, ua rau muaj kev siv nyiaj ntau dua. Kev siv nyiaj tuaj yeem suav los ntawm kev sib npaug ntawm cov nqi khoom siv los ntawm lub neej coefficient, muab qhov tseem ceeb rau kev xaiv nrog tus nqi qis tshaj plaws ib lub sijhawm.

IV. Kev Nkag Siab Yuam Kev thiab Cov Lus Teb rau Cov Lus Nug Feem Ntau

1. Kev nkag siab yuam kev: Yog tias cov khoom siv tiv taus cua sov, cov saw hlau yuav tsim nyog tas li?

Tsis yog. Cov khoom siv tsuas yog lub hauv paus xwb. Cov qauv tsim ntawm cov saw hlau (xws li qhov loj me ntawm qhov sib txawv thiab cov kav dej roj), cov txheej txheem kho cua sov (xws li kev kho cov kua kom txhim kho lub zog kub siab), thiab kev teeb tsa kom raug txhua yam cuam tshuam rau kev ua haujlwm kub siab. Piv txwv li, cov saw hlau stainless hlau 310S yuav muaj nws lub zog kub siab txo qis 30% yog tias nws tsis tau kho cov kua ntawm 1030-1180 ℃.

2. Lo lus nug: Yuav ua li cas los daws cov saw hlau jamming hauv qhov chaw kub siab los ntawm kev kho cov ntaub ntawv?

Qhov ua rau mob jawing feem ntau yog los ntawm cov oxide scale peeling lossis thermal expansion tsis sib xws. Cov kev daws teeb meem: ① Yog tias nws yog teeb meem oxidation, hloov kho 304 stainless hlau mus rau 310S lossis ua chromium plating kho; ② Yog tias nws yog teeb meem thermal expansion, koom ua ke cov ntaub ntawv ntawm txhua yam saw hlau, lossis xaiv nickel-based alloy pins nrog cov coefficient qis dua ntawm thermal expansion.

3. Lo lus nug: Cov saw hlau kub siab hauv kev lag luam zaub mov tuaj yeem sib npaug li cas qhov kev tiv taus kub siab thiab kev tu cev?

Xaiv cov hlau tsis xeb 304 lossis 316L ua ntej, tsis txhob siv cov txheej uas muaj cov hlau hnyav; siv cov qauv uas tsis muaj qhov zawj kom yooj yim ntxuav; siv cov roj nplua nyeem uas tau ntawv pov thawj los ntawm FDA uas siv rau kev ua zaub mov kub lossis cov qauv uas ua rau nws tus kheej nplaum (xws li cov saw hlau uas muaj PTFE roj nplua nyeem).

V. Cov Lus Qhia Luv: Los ntawm Kev Xaiv Khoom Siv mus rau Kev Ntseeg Tau ntawm Lub System

Kev xaiv cov khoom siv rau cov saw hlau rau qhov chaw kub siab feem ntau yog nrhiav kev daws teeb meem zoo tshaj plaws ntawm kev ua haujlwm hnyav thiab cov nqi lag luam. Txij li kev siv nyiaj txiag ntawm 304 stainless hlau, mus rau qhov sib npaug ntawm kev ua haujlwm ntawm 310S stainless hlau, thiab tom qab ntawd mus rau qhov kawg ntawm cov hlau nickel-based alloys, txhua yam khoom siv sib raug rau cov kev xav tau tshwj xeeb ntawm kev ua haujlwm. Yav tom ntej, nrog rau kev txhim kho cov thev naus laus zis khoom siv, cov khoom siv hlau tshiab uas sib xyaw ua ke lub zog kub siab thiab tus nqi qis yuav dhau los ua qhov sib txawv. Txawm li cas los xij, nyob rau theem tam sim no, kev sau cov kev ua haujlwm kom raug thiab tsim kom muaj lub kaw lus ntsuam xyuas kev tshawb fawb yog qhov yuav tsum tau ua kom tiav cov kab ke sib kis ruaj khov thiab txhim khu kev qha.