Qhov tseem ceeb thiab kev siv ntawm polishing
Vim li cas peb thiaj li yuav tsum tau ua cov txheej txheem saum npoo ntawm cov khoom siv kho tshuab?
Cov txheej txheem kho saum npoo yuav txawv rau ntau lub hom phiaj.
1 Peb lub hom phiaj ntawm kev ua tiav ntawm cov khoom siv tshuab:
1.1 Cov txheej txheem txheej txheej saum npoo kom tau txais qhov raug
Rau qhov chaw nrog cov kev xav tau sib xws, qhov yuav tsum tau muaj rau qhov raug (nrog rau qhov tseeb qhov tseeb, qhov raug thiab qhov tseeb ntawm qhov chaw) feem ntau yog qhov siab, thiab qhov tseeb thiab qhov roughness yog cuam tshuam.Yuav kom tau txais qhov tseeb, qhov sib thooj roughness yuav tsum ua tiav.Piv txwv li: qhov tseeb IT6 feem ntau xav tau qhov sib thooj roughness Ra0.8.
[Common mechanical txhais tau tias]:
- Tig los yog milling
- Zoo boring
- zoo sib tsoo
- Sib tsoo
1.2 Surface processing method to get surface mechanical zog
1.2.1 Tau txais kev hnav tsis kam
[Common method]
- Sib tsoo tom qab hardening lossis carburizing / quenching (nitriding)
- Sib tsoo thiab polishing tom qab nyuaj chrome plating
1.2.2 Tau txais qhov zoo ntawm qhov kev ntxhov siab
[Common method]
- Modulation thiab sib tsoo
- Deg kev kho cua sov thiab sib tsoo
- Nto dov lossis txhaj tshuaj peening ua raws li kev sib tsoo zoo
1.3 Cov txheej txheem ua kom tau cov khoom siv tshuaj lom neeg
[Common method]
- Electroplating thiab polishing
2 Hlau nto polishing tshuab
2.1 Qhov tseem ceeb Nws yog ib feem tseem ceeb ntawm kev siv tshuab ntog thiab engineering, thiab tau siv dav hauv cov txheej txheem tsim khoom, tshwj xeeb tshaj yog nyob rau hauv kev lag luam electroplating, txheej, anodizing thiab ntau yam txheej txheem kho deg.
2.2 Vim li cas thawj qhov chaw tsis zoo thiab qhov ua tiav cov txiaj ntsig ntawm cov khoom ua haujlwm tseem ceeb heev?Vim tias lawv yog cov ntsiab lus pib thiab lub hom phiaj ntawm kev ua haujlwm polishing, uas txiav txim siab yuav ua li cas xaiv hom polishing tshuab, nrog rau tus naj npawb ntawm kev sib tsoo taub hau, cov khoom siv, tus nqi, thiab kev ua haujlwm ntawm lub tshuab polishing.
2.3 Sib tsoo & Polishing theem thiab trajectories
Plaub theem ntawmsib tsoothiabpolishing] : Raws li qhov pib thiab qhov kawg roughness Ra qhov tseem ceeb ntawm lub workpiece, sib tsoo ntxhib - zoo sib tsoo - nplua sib tsoo - polishing.Cov abrasives txawv ntawm ntxhib mus rau zoo.Cov cuab yeej sib tsoo thiab cov khoom ua haujlwm yuav tsum tau ntxuav txhua zaus lawv hloov.
2.3.1 Cov cuab yeej sib tsoo yog ib qho nyuaj, qhov micro-txiav thiab extrusion nyhuv yog ntau dua, thiab qhov loj thiab roughness muaj kev hloov pauv.
2.3.2 Mechanical polishing yog txheej txheem txiav ntau dua li kev sib tsoo.Cov cuab yeej polishing yog ua los ntawm cov khoom muag, uas tuaj yeem txo qhov roughness tab sis tsis tuaj yeem hloov qhov tseeb ntawm qhov loj thiab cov duab.Qhov roughness tuaj yeem ncav cuag tsawg dua 0.4μm.
2.4 Peb lub tswv yim ntawm kev kho deg tiav: sib tsoo, polishing, thiab ua tiav
2.4.1 Lub tswv yim ntawm kev sib tsoo thiab polishing
Txawm hais tias ob qho tib si kev sib tsoo thiab kev sib tsoo tshuab tuaj yeem txo qhov roughness, kuj tseem muaj qhov sib txawv:
- 【Mechanical polishing】: Nws suav nrog qhov ntev ntev, siab ntev thiab txoj haujlwm kam rau ua.Nws yuav tsum xyuas kom meej qhov ntev kam rau ua, zoo zoo kam rau ua thiab txoj hauj lwm kam rau ua ntawm cov av nto thaum txo cov roughness.
- Mechanical polishing: Nws txawv ntawm polishing.Nws tsuas yog txhim kho qhov chaw tiav, tab sis qhov kam rau ua tsis tuaj yeem lav tau zoo.Nws qhov ci ci yog siab dua thiab ci dua li polishing.Cov txheej txheem ntawm mechanical polishing yog sib tsoo.
2.4.2 [Finishing processing] yog kev sib tsoo thiab polishing txheej txheem (abbreviated li kev sib tsoo thiab polishing) nqa tawm ntawm lub workpiece tom qab zoo machining, tsis tau tshem tawm los yog tsuas yog tshem tawm ib tug nyias txheej ntawm cov khoom, nrog rau lub ntsiab lub hom phiaj ntawm txo nto roughness, nce nto gloss thiab ntxiv dag zog rau nws nto.
Qhov tseeb thiab roughness ntawm qhov chaw nto muaj kev cuam tshuam zoo rau nws lub neej thiab zoo.Cov txheej txheem deteriorated sab laug los ntawm EDM thiab cov kab nrib pleb sab laug los ntawm kev sib tsoo yuav cuam tshuam rau lub neej kev pab cuam ntawm qhov chaw.
① Cov txheej txheem ua tiav muaj cov nyiaj ua haujlwm me me thiab feem ntau yog siv los txhim kho qhov zoo.Ib qho me me yog siv los txhim kho qhov tseeb ntawm machining (xws li qhov tseeb qhov tseeb thiab cov duab raug), tab sis nws tsis tuaj yeem siv los txhim kho txoj haujlwm raug.
② Kev ua tiav yog cov txheej txheem ntawm micro-txiav thiab extruding lub workpiece nto nrog nplua-grained abrasives.Qhov saum npoo yog txheej txheem sib npaug, txiav quab yuam thiab txiav cov cua sov me me, thiab qhov zoo ntawm qhov chaw tuaj yeem tau txais.③ Kev ua tiav yog txheej txheem micro-processing thiab tsis tuaj yeem kho qhov loj ntawm qhov chaw.Kev ua kom zoo yuav tsum tau ua ua ntej ua.
Lub ntsiab ntawm hlau nto polishing yog nto xaiv micro-tshem tawm ua.
3. Tam sim no paub tab txheej txheem polishing: 3.1 mechanical polishing, 3.2 tshuaj polishing, 3.3 electrolytic polishing, 3.4 ultrasonic polishing, 3.5 kua polishing, 3.6 magnetic sib tsoo polishing,
3.1 Mechanical polishing
Mechanical polishing yog ib txoj kev polishing uas tso siab rau kev txiav thiab yas deformation ntawm cov khoom nto kom tshem tawm cov polished protrusions kom tau ib tug du nto.
Siv cov thev naus laus zis no, cov tshuab polishing tuaj yeem ua tiav qhov roughness ntawm Ra0.008μm, uas yog qhov siab tshaj plaws ntawm ntau txoj kev polishing.Txoj kev no feem ntau yog siv rau hauv optical lens pwm.
3.2 Tshuaj polishing
Tshuaj polishing yog ua kom lub microscopic convex qhov chaw ntawm cov khoom nto dissolve nyiam nyob rau hauv cov tshuaj nruab nrab ntawm lub concave qhov chaw, thiaj li yuav tau ib tug du nto.Lub ntsiab zoo ntawm txoj kev no yog tias nws tsis xav tau cov cuab yeej nyuaj, tuaj yeem polish workpieces nrog cov duab nyuaj, tuaj yeem polish ntau workpieces tib lub sijhawm, thiab muaj txiaj ntsig zoo.Lub ntsiab teeb meem ntawm tshuaj polishing yog kev npaj cov kua polishing.Qhov saum npoo roughness tau los ntawm tshuaj polishing feem ntau yog ntau kaum ntawm μm.
3.3 Electrolytic polishing
Electrolytic polishing, tseem hu ua electrochemical polishing, selectively dissolves me me protrusions rau saum npoo ntawm cov khoom kom ua rau saum npoo du.
Piv nrog tshuaj polishing, cov nyhuv ntawm cov tshuaj tiv thaiv cathode tuaj yeem raug tshem tawm thiab cov nyhuv zoo dua.Cov txheej txheem electrochemical polishing tau muab faib ua ob theem:
(1) Macro-leveling: Cov khoom tawg tau tawg mus rau hauv cov electrolyte, thiab cov geometric roughness ntawm cov khoom nto txo, Ra 1μm.
(2) Gloss smoothing: Anodic polarization: Surface brightness yog txhim kho, Ralμm.
3.4 Ultrasonic polishing
Lub workpiece yog muab tso rau hauv ib tug abrasive ncua kev kawm ntawv thiab muab tso rau hauv ib tug ultrasonic teb.Lub abrasive yog hauv av thiab polished ntawm lub workpiece nto los ntawm oscillation ntawm ultrasonic yoj.Ultrasonic machining muaj ib tug me me macroscopic quab yuam thiab yuav tsis ua deformation ntawm lub workpiece, tab sis cov cuab yeej yog ib qho nyuaj rau tsim thiab nruab.
Ultrasonic machining tuaj yeem ua ke nrog cov tshuaj los yog electrochemical txoj kev.Nyob rau hauv lub hauv paus ntawm kev daws corrosion thiab electrolysis, ultrasonic kev co yog siv los do cov tshuaj cais cov khoom yaj nyob rau hauv lub workpiece nto thiab ua rau corrosion los yog electrolyte nyob ze ntawm lub nto uniform;cov nyhuv cavitation ntawm ultrasonic tsis nyob rau hauv cov kua kuj tuaj yeem cuam tshuam cov txheej txheem corrosion thiab pab txhawb qhov ci ntsa iab.
3.5 Dej polishing
Cov kua polishing tso siab rau cov kua dej nrawm nrawm thiab cov khoom abrasive nws nqa los txhuam cov workpiece nto kom ua tiav lub hom phiaj ntawm polishing.
Feem ntau siv txoj kev muaj xws li: abrasive dav hlau ua, kua dav hlau ua, kua dynamic sib tsoo, thiab lwm yam.
3.6 Sib nqus sib tsoo thiab polishing
Sib nqus sib tsoo thiab polishing siv cov hlau nplaum abrasives los tsim cov txhuam txhuam hauv qab qhov kev txiav txim ntawm cov hlau nplaum kom zom cov khoom ua haujlwm.
Txoj kev no muaj kev ua haujlwm siab, ua haujlwm zoo, tswj tau yooj yim ntawm kev ua haujlwm, thiab kev ua haujlwm zoo.Nrog rau qhov tsim nyog abrasives, qhov saum npoo roughness tuaj yeem ncav cuag Ra0.1μm.
Los ntawm tsab xov xwm no, kuv ntseeg tias koj yuav muaj kev nkag siab zoo ntawm polishing.Ntau hom polishing tshuab yuav txiav txim siab cov txiaj ntsig, kev ua tau zoo, tus nqi thiab lwm yam ntsuas ntawm kev ua tiav cov hom phiaj sib txawv workpiece polishing.
Dab tsi ntawm polishing tshuab koj lub tuam txhab lossis koj cov neeg siv khoom xav tau yuav tsum tsis yog tsuas yog ua kom haum raws li lub tshuab ua haujlwm nws tus kheej, tab sis kuj raws li tus neeg siv khoom xav tau kev lag luam, nyiaj txiag teeb meem, kev tsim kho kev lag luam thiab lwm yam.
Tau kawg, muaj ib txoj hauv kev yooj yim thiab muaj txiaj ntsig los daws qhov no.Thov nrog peb cov neeg ua haujlwm muag khoom ua ntej los pab koj.
Lub sij hawm xa tuaj: Jun-17-2024