Cov txheej txheem carburizing ntawm cov saw hlau

Cov saw hlau yog ib qho khoom siv kis tau dav dav hauv kev tsim khoom lag luam. Nws qhov kev ua tau zoo nyob ntawm cov txheej txheem tsim khoom, thiab cov txheej txheem carburizing yog qhov tseem ceeb rau kev txhim kho kev ua tau zoo ntawm cov saw hlau.

Cov txheej txheem carburizing rau cov saw hlau: qhov tseem ceeb rau kev txhim kho kev ua tau zoo
Cov saw hlau ua lub luag haujlwm tseem ceeb ntawm kev sib kis hauv ntau yam khoom siv kho tshuab. Nws qhov chaw ua haujlwm feem ntau nyuaj thiab hloov pauv, ntsib cov teeb meem xws li kev thauj khoom hnyav, hnav thiab qaug zog. Yuav kom cov saw hlau hloov kho tau zoo dua rau cov xwm txheej nyuaj no thiab txuas lawv lub neej kev pabcuam, cov txheej txheem carburizing tau dhau los ua ib feem tseem ceeb ntawm cov txheej txheem tsim cov saw hlau.

Cov ntsiab cai yooj yim ntawm cov txheej txheem carburizing
Carburizing yog ib qho txheej txheem kho cua sov uas feem ntau yog siv los txhim kho qhov tawv, hnav tsis kam thiab qaug zog ntawm qhov chaw hlau thaum tswj hwm qhov tawv thiab plasticity ntawm lub plawv. Tshwj xeeb, cov saw hlau dov tau muab tso rau hauv cov pa roj carbon ntau, thiab cov pa roj carbon atoms raug nkag mus rau hauv qhov chaw ntawm cov saw hlau dov ntawm qhov kub siab los tsim cov txheej carburized carbon siab. Thaum qhov kub txo qis, cov txheej no ntawm cov austenite carbon siab yuav hloov mus ua martensite nyuaj heev, yog li ua tiav qhov tawv ntawm qhov chaw ntawm cov saw hlau dov.

Cov txheej txheem carburizing rau cov menyuam saw hlau
Kev siv roj carbonizing: Qhov no yog ib txoj kev siv carburizing uas siv ntau tshaj plaws. Cov saw hlau dov tau muab tso rau hauv lub cub tawg carburizing uas kaw thiab tus neeg sawv cev carburizing uas feem ntau yog ua los ntawm cov pa roj carbon xws li methane thiab ethane tau muab tso rau hauv. Thaum kub siab, cov pa roj no lwj mus ua cov pa roj carbon atoms, yog li ua tiav carburizing. Qhov zoo ntawm kev siv roj carburizing yog kev ua haujlwm yooj yim, kev kub ceev, lub voj voog tsim khoom luv luv, thiab lub peev xwm los kho qhov tob thiab qhov sib xyaw ntawm cov txheej carburized los ntawm kev tswj cov kev teeb tsa xws li cov pa roj thiab tus nqi ntws. Qhov zoo ntawm carburizing yog ruaj khov, uas yooj yim ua tiav kev siv tshuab thiab kev ua haujlwm tsis siv neeg, txhim kho cov xwm txheej ua haujlwm zoo heev.
Kev siv cov kua carburizing: Kev siv cov kua carburizing yog kev muab cov saw hlau rau hauv cov kua carburizing nruab nrab. Cov khoom siv feem ntau suav nrog silicon carbide, "603" carburizing agent, thiab lwm yam. Thaum qhov kub thiab txias tsim nyog, cov pa roj carbon atoms yaj ntawm cov kua nruab nrab thiab nkag mus rau hauv qhov chaw ntawm cov saw hlau. Qhov zoo ntawm kev siv cov kua carburizing yog tias lub voj voog ntau lawm luv luv, thiab kev quenching tuaj yeem ua tiav ncaj qha tom qab carburizing yam tsis txhawj txog oxidation thiab decarburization. Qhov kub thiab sijhawm yooj yim tswj, qhov cua sov yog sib xws, thiab kev hloov pauv ntawm cov khoom ua haujlwm tuaj yeem txo qis. Cov khoom siv kuj yooj yim heev. Txawm li cas los xij, nws cov xwm txheej ua haujlwm tsis zoo thiab nws feem ntau haum rau ib daim lossis me me ntau lawm.
Kev siv cov khoom siv carburizing: Qhov no yog ib txoj kev siv carburizing ib txwm muaj. Cov saw hlau raug muab tso rau hauv lub thawv carburizing kaw nrog rau cov khoom siv carburizing, thiab tom qab ntawd lub thawv carburizing raug muab tso rau hauv lub cub tawg thiab cua sov rau qhov kub carburizing thiab khaws cia kom sov rau ib lub sijhawm, kom cov pa roj carbon atoms nkag mus rau hauv qhov chaw ntawm cov saw hlau. Cov khoom siv carburizing feem ntau yog ua los ntawm thee thiab qee cov promoters. Qhov zoo ntawm txoj kev no yog kev ua haujlwm yooj yim, kev xav tau kev txawj ntse tsawg, tsis tas yuav siv cov khoom siv tshwj xeeb, ntau yam khoom siv carburizing thiab tuaj yeem npaj los ntawm koj tus kheej, thiab ntau yam kev siv. Tab sis qhov tsis zoo kuj pom tseeb. Qhov zoo ntawm carburizing nyuaj rau tswj kom raug, cov xwm txheej ua haujlwm tsis zoo, lub zog siab, lub voj voog tsim khoom ntev, tus nqi siab, thiab cov noob loj hlob sai thaum lub sijhawm carburizing. Rau qee qhov haujlwm tseem ceeb, kev quenching ncaj qha feem ntau tsis siv.

Cov ntsiab lus tseem ceeb ntawm cov txheej txheem carburizing roller chain
Kub thiab lub sijhawm carburizing: Qhov kub carburizing feem ntau yog nyob nruab nrab ntawm 900 ℃ thiab 950 ℃. Qhov kub siab dua tuaj yeem ua rau qhov nrawm ntawm cov pa roj carbon diffusion thiab luv lub sijhawm carburizing, tab sis tib lub sijhawm nws kuj tseem tuaj yeem ua rau cov noob loj hlob thiab cuam tshuam rau kev ua haujlwm ntawm cov saw hlau. Lub sijhawm carburizing yog txiav txim siab raws li qhov tob ntawm cov txheej carburizing xav tau, feem ntau yog txij li ob peb teev mus rau ntau teev. Piv txwv li, rau qee cov saw hlau uas xav tau cov txheej carburizing qis dua, nws tsuas yog siv sijhawm ob peb teev xwb, thaum rau cov saw hlau uas xav tau cov txheej carburizing tob dua, nws yuav siv sijhawm ntau teev ntawm carburizing. Hauv kev tsim khoom tiag tiag, nws yog qhov tsim nyog los txiav txim siab qhov kub thiab sijhawm carburizing zoo tshaj plaws los ntawm kev sim thiab kev paub dhau los raws li cov yam ntxwv xws li cov khoom siv tshwj xeeb, qhov loj me thiab kev ua tau zoo ntawm cov saw hlau.
Kev tswj cov pa roj carbon: Cov pa roj carbon yog hais txog lub peev xwm ntawm tus neeg sawv cev carburizing los muab cov pa roj carbon rau ntawm qhov chaw ua haujlwm. Kev tswj hwm cov pa roj carbon kom raug yog qhov tseem ceeb rau kev tau txais cov txheej carburized zoo tagnrho. Cov pa roj carbon siab dhau yuav ua rau cov carbides network tshwm sim ntawm qhov chaw ntawm cov saw hlau, txo nws lub zog qaug zog; cov pa roj carbon qis dhau yuav ua rau qhov tob ntawm cov txheej carburized tsis txaus thiab tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Feem ntau, cov cuab yeej xws li cov pa oxygen probes thiab cov pa roj infrared analyzers siv los saib xyuas huab cua hauv lub cub tawg hauv lub sijhawm tiag tiag, thiab cov pa roj carbon raug kho raws sijhawm raws li cov txiaj ntsig saib xyuas kom ntseeg tau tias cov pa roj carbon gradient yeej ib txwm nyob hauv qhov zoo tagnrho, yog li tau txais cov txheej carburized zoo ib yam thiab zoo. Tsis tas li ntawd, nrog kev pab los ntawm kev siv tshuab computer simulation siab heev, cov qauv carbon potential diffusion tuaj yeem tsim los simulate cov kev hloov pauv carbon potential gradient thiab kev hloov pauv ntawm cov txheej carburized nyob rau hauv cov txheej txheem sib txawv, kwv yees cov nyhuv carburizing ua ntej, muab lub hauv paus kev tshawb fawb rau kev ua kom zoo dua, thiab txhim kho qhov tseeb thiab kev ruaj khov ntawm cov txheej txheem carburizing.
Txias thiab quenching: Tom qab carburizing, cov saw hlau feem ntau yuav tsum tau txias sai thiab quenched kom tsim tau cov qauv martensitic thiab txhim kho qhov nyuaj ntawm qhov chaw. Cov khoom siv quenching feem ntau suav nrog roj, dej, polymer quenching kua, thiab lwm yam. Cov khoom siv quenching sib txawv muaj cov nqi txias thiab cov yam ntxwv sib txawv, thiab yuav tsum tau xaiv raws li cov khoom siv thiab kev ua tau zoo ntawm cov saw hlau. Piv txwv li, rau qee cov saw hlau me me, roj quenching yuav siv tau; rau cov saw hlau loj lossis cov saw hlau uas muaj qhov nyuaj dua, dej quenching lossis polymer quenching kua quenching yuav siv tau. Tom qab quenching, cov saw hlau kuj yuav tsum tau tempered kom tshem tawm cov kev ntxhov siab sab hauv uas tsim thaum lub sijhawm quenching thiab txhim kho nws cov tawv. Qhov kub tempering feem ntau yog ntawm 150 ℃ thiab 200 ℃, thiab lub sijhawm tempering yog txiav txim siab raws li cov yam xws li qhov loj ntawm cov saw hlau thiab qhov kub tempering, feem ntau yog li 1 txog 2 teev.

Kev xaiv cov khoom siv ntawm cov saw hlau thiab kev hloov kho ntawm cov txheej txheem carburizing
Cov khoom siv ntawm cov saw hlau feem ntau yog cov hlau carbon tsawg lossis cov hlau carbon tsawg, xws li 20 hlau, 20CrMnTi, thiab lwm yam. Cov ntaub ntawv no muaj cov yas zoo thiab tawv, thiab tuaj yeem tsim cov txheej carburized zoo thaum lub sijhawm carburizing. Piv txwv li, 20CrMnTi muaj cov ntsiab lus xws li chromium, manganese thiab titanium. Cov ntsiab lus alloy no tsis tsuas yog txhim kho lub zog thiab tawv ntawm cov hlau, tab sis kuj cuam tshuam rau nws cov nyhuv hardening thaum lub sijhawm carburizing. Ua ntej carburizing, cov saw hlau yuav tsum tau ua ntej kho kom zoo, xws li pickling lossis sandblasting, kom tshem tawm cov oxides saum npoo thiab av kom ntseeg tau tias cov txheej txheem carburizing du.

Cov txheej txheem carburizing txhim kho kev ua tau zoo ntawm cov saw hlau
Kev tawv thiab kev hnav tsis kam: Tom qab carburizing, qhov tawv ntawm cov saw hlau tuaj yeem txhim kho tau zoo heev, feem ntau yog txog HRC58 txog 64. Qhov no ua rau nws tiv taus cov teeb meem xws li kev hnav ntawm cov hniav, kev sib txuas thiab kev poob qis hauv qab kev ua haujlwm hnyav xws li kev kub ceev, kev thauj khoom hnyav thiab kev pib ntau zaus, thiab ua rau nws lub neej ua haujlwm ntev dua. Piv txwv li, cov saw hlau siv hauv qee lub tshuab mining loj tau txhim kho lawv qhov kev hnav tsis kam tom qab kev kho carburizing, thiab tuaj yeem thauj cov khoom siv ruaj khov rau lub sijhawm ntev, txo cov khoom siv kaw thiab kho vim yog saw hlau hnav.
Kev ua haujlwm tiv thaiv kev qaug zog: Qhov kev ntxhov siab ntawm cov khoom seem uas tsim los ntawm cov txheej carburized thiab cov qauv zoo ntawm cov txheej saum npoo pab txhim kho kev ua haujlwm tiv thaiv kev qaug zog ntawm cov saw hlau. Nyob rau hauv qhov kev ua ntawm cov khoom thauj cyclic, cov saw hlau tuaj yeem tiv taus qhov siab dua thiab tsis yooj yim rau kev tawg qaug zog, yog li txhim kho nws qhov kev ntseeg siab hauv kev ua haujlwm ntev. Qhov no yog qhov tseem ceeb tshwj xeeb rau qee cov khoom siv uas xav tau kev ua haujlwm tas mus li, xws li lub sijhawm saw hlau hauv lub cav tsheb, uas tuaj yeem ua kom muaj kev nyab xeeb thiab ruaj khov ntawm cov khoom siv thiab txo qhov kev pheej hmoo ntawm kev ua tsis tiav.
Cov khoom siv kho tshuab tiav: Cov txheej txheem carburizing tsis yog tsuas yog txhim kho kev ua tau zoo ntawm cov saw hlau, tab sis kuj tseem tswj tau qhov zoo ntawm lub hauv paus. Ua li no, thaum cov saw hlau raug cuam tshuam, nws tuaj yeem nqus tau zoo dua thiab faib cov zog thiab zam cov teeb meem tsis ua haujlwm xws li tawg vim muaj kev ntxhov siab hauv zos. Cov saw hlau tuaj yeem qhia cov khoom siv kho tshuab zoo hauv ntau qhov chaw ua haujlwm nyuaj thiab ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab sib txawv.

Kev tshuaj xyuas zoo thiab kev tswj hwm ntawm cov saw hlau carburized
Kev tshuaj xyuas qhov tob ntawm cov txheej carburized: Kev tshuaj xyuas metallographic feem ntau yog siv los ntsuas qhov tob ntawm cov txheej carburized. Tom qab txiav, polishing thiab corroding cov qauv saw hlau, cov qauv ntawm cov txheej carburized raug pom hauv qab lub tshuab microscope metallographic thiab nws qhov tob raug ntsuas. Qhov ntsuas no qhia ncaj qha seb qhov cuam tshuam carburizing puas ua tau raws li qhov yuav tsum tau tsim, uas yog qhov tseem ceeb kom ntseeg tau tias kev ua haujlwm ntawm cov saw hlau. Piv txwv li, rau qee cov saw hlau siv rau kev sib kis hnyav, qhov tob ntawm cov txheej carburized yuav tsum tau mus txog li 0.8 txog 1.2 hli kom ua tau raws li nws qhov kev tiv thaiv hnav thiab kev qaug zog tsis kam nyob rau hauv cov khoom hnyav.
Kev ntsuam xyuas qhov nyuaj: Siv lub tshuab ntsuas qhov nyuaj los ntsuas qhov nyuaj ntawm qhov chaw thiab lub hauv paus ntawm cov saw hlau. Qhov nyuaj ntawm qhov chaw yuav tsum ua tau raws li qhov ntau thiab tsawg tus qauv teev tseg, thiab qhov nyuaj ntawm lub hauv paus kuj yuav tsum nyob hauv qhov ntau thiab tsawg kom ntseeg tau tias cov saw hlau muaj kev ua tau zoo. Kev ntsuam xyuas qhov nyuaj feem ntau yog ua tiav ntawm qee qhov zaus kuaj, thiab txhua pawg ntawm cov saw hlau uas tsim tawm raug kuaj xyuas kom ntseeg tau tias qhov zoo ntawm cov khoom ruaj khov.
Kev tshuaj xyuas cov qauv metallographic: Ntxiv rau qhov kev tshawb pom qhov tob ntawm cov txheej carburized, cov qauv metallographic ntawm cov txheej carburized kuj tseem yuav tsum tau tshuaj xyuas, suav nrog cov morphology, kev faib tawm thiab qhov loj ntawm cov carbides. Cov qauv metallographic zoo tuaj yeem ua kom ntseeg tau tias cov saw hlau ua haujlwm thaum siv. Piv txwv li, cov carbides zoo thiab faib sib npaug pab txhim kho kev hnav tsis kam thiab kev qaug zog ntawm cov saw hlau, thaum cov noob ntau dhau yuav txo nws cov tawv. Los ntawm kev tshuaj xyuas cov qauv metallographic, cov teeb meem hauv cov txheej txheem carburizing tuaj yeem pom tau raws sijhawm, thiab cov kev ntsuas sib xws tuaj yeem ua los kho thiab txhim kho lawv kom zoo dua qub.

Xaus lus
Cov txheej txheem carburizing ntawm cov saw hlau yog ib qho thev naus laus zis nyuaj thiab tseem ceeb, uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo ntawm cov saw hlau. Txij li kev xaiv cov txheej txheem mus rau kev tswj hwm cov ntsiab lus tseem ceeb, mus rau kev hloov kho ntawm cov ntaub ntawv thiab kev tshuaj xyuas zoo, txhua qhov txuas yuav tsum tau tswj hwm nruj me ntsis kom ntseeg tau tias cov saw hlau tuaj yeem ua tau raws li qhov yuav tsum tau siv nyob rau hauv ntau yam kev ua haujlwm. Nrog rau kev nce qib tas mus li ntawm kev tshawb fawb thiab thev naus laus zis, cov txheej txheem carburizing kuj tseem niaj hnub tsim kho tshiab thiab txhim kho. Piv txwv li, kev siv cov kev sim ua kom zoo dua hauv computer thiab cov thev naus laus zis saib xyuas online tiag tiag yuav pab txhim kho cov txheej txheem carburizing, txhim kho kev ua tau zoo thiab zoo ntawm cov saw hlau, thiab muab cov kev daws teeb meem kis tau zoo dua thiab ua haujlwm tau zoo rau kev tsim khoom lag luam.