Vim muaj peb yam sib txawv ntawm cov xuab zeb siv thiab ntau yam yam ntxwv, covxuab zeb sivtuaj yeem muab faib ua ntau yam raws li cov khoom sib tsoo sib txawv, kev sib tsoo thiab kev sib tsoo.
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Cov hauv qab no tsuas yog qee qhov ntawm cov xuab zeb yooj yim tshaj plaws rau qee qhov kev taw qhia.
1. Electrostatic xuab zeb thiab gravity xuab zeb
Electrostatic cog xuab zeb siv lub hauv paus ntsiab lus ntawm high voltage electrostatic adsorption polarize abrasive upward thiab embed nws mus rau hauv lub nplaum txheej ntawm lub substrate nyob rau hauv cov kev taw qhia ntawm nws tus kheej ntev axis, yog li tsim ib tug zoo huv si txheej thiab sib npaug faib abrasive txheej. , raws li qhia hauv daim duab 1 (a). Kev sib tsoo ua haujlwm ntawm electrostatic xuab zeb siv yog ntau tshaj 25 feem pua siab dua li ntawm cov xuab zeb siv dav dav. Qhov saum npoo roughness yog uniform thiab zoo. Qhov ceev ntawm electrostatic xuab zeb kuj yooj yim los tswj.
Lub ntiajteb txawj nqus xuab zeb cog (tseem hu ua mechanical sand planting) xuab zeb siv yog siv cov abrasive hnyav, dawb poob los ntawm ib tug tej qhov siab thiab embedded nyob rau hauv cov roj hmab txheej ntawm lub substrate los tsim ib tug abrasive txheej, nrog rau txoj kev no ntawm xuab zeb cog. , cov kev taw qhia ntawm kev kho abrasive yog tsis meej, feem ntau "chaw nyob" xeev, raws li qhia hauv daim duab 1 (b). Lub sharpness ntawm abrasive txiav ntug ntawm no abrasive siv yog tsis zoo, yog li qhov kev sib tsoo efficiency thiab machining nto zoo tsis zoo li cov electrostatic cog xuab zeb siv. Nws kuj yog qhov nyuaj dua los tswj qhov ceev ntawm cov xuab zeb.
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FIG. 1 Cov txheej txheem cog xuab zeb muaj qhov cuam tshuam loj rau cov duab ntawm cov xuab zeb siv
Gravity xuab zeb cog yog txoj kev cog qoob loo tseem ceeb hauv cov txheej txheem ua ntej ntawm cov xuab zeb siv thiab cov ntawv xuab zeb. Nrog rau kev nce qib ntawm kev siv tshuab, lub ntiajteb txawj nqus xuab zeb cog tau pib hloov los ntawm electrostatic xuab zeb. Ntxiv rau cov txheej txheem saum toj no, muaj cov hauv qab no cov xuab zeb cog: txheem xuab zeb, sparse xuab zeb thiab Combi xuab zeb, raws li qhia hauv daim duab 2. Cov xuab zeb sib txawv tuaj yeem txhim kho cov khoom abrasive thiab cov nplej sib nrug los txhim kho cov peev txheej.
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Daim duab 2 Lwm txoj kev cog xuab zeb
2. Tsis siv cov xuab zeb sib koom ua ke, cov xuab zeb sib koom ua ke, thiab qhib cov xuab zeb siv
Cov xuab zeb sib koom ua ke yog ua los ntawm cov ntaub ntawv tshwj xeeb cylindrical raws li cov khoom siv hauv paus, tom qab ncab, calendering thiab impregnating thawj daim ntaub ntawm cov cuab yeej tshwj xeeb, thiab tom qab ntawd los ntawm gluing, xuab zeb cog thiab ziab. Txoj siv tsis sib koom ua ke kuj yog ib qho khoom siv thaum ntxov ntawm txoj siv, uas tsis tau tsim.
Cov xuab zeb sib koom ua ke yog hloov dua siab tshiab los ntawm kev txiav, edging, kev sib txuas thiab slitting lub dov xuab zeb siv nyob rau hauv ntau qhov sib txawv. Lub girth ntawm kev sib koom ua ke xuab zeb siv tsis txwv, thiab kev tsim khoom yog yooj yim heev, tshwj xeeb tshaj yog kev txhim kho ntawm txoj kev sib koom ua ke tam sim no, kev sib koom ua ke thiab cov txheej txheem kev sib koom ua ke tau ua rau cov xuab zeb siv sib koom ua ke, txawm tias nyob rau hauv thickness, lub zog, cov yam ntxwv yooj yim los yog txawm. tag nrho qhov sib xws ntawm qhov tsis sib koom ua ke tau mus txog qib siab heev, uas yog daim ntawv tseem ceeb ntawm txoj siv xuab zeb tam sim no.
Qhib xuab zeb siv yog lwm hom xuab zeb siv, uas yog ib qho me me dov xuab zeb siv los ntawm ncaj qha faib cov dov xuab zeb siv dawb paug raws li qhov loj me. Qhov qhib sanding siv yog yooj yim los ua. Nws kuj yog yooj yim heev rau siv, thiab feem ntau yog siv nyob rau hauv zoo particle loj precision machining, xws li automotive engine camshaft, crankshaft, precision cylindrical qhov chaw thiab hais txog. Nws yog tus cwj pwm los ntawm kev ua haujlwm siab nrawm nrawm, qeeb xuab zeb siv ceev, lub voj voog ua haujlwm ntev, thiab muaj ib txwm tshiab abrasives koom nrog kev sib tsoo hauv cheeb tsam sib tsoo, yog li qhov sib xws ntawm kev sib tsoo nto zoo heev.
3. Nthuav cog xuab zeb siv thiab sparse cog xuab zeb siv
Cov xuab zeb cog densely tseem hu ua kaw coated xuab zeb siv, uas yog tus cwj pwm los ntawm qhov tseeb tias cov abrasives nyob ze rau ib leeg, tag nrho saum npoo ntawm substrate yog npog, thiab tsis muaj qhov sib txawv ntawm cov abrasives. Cov xuab zeb cog qoob loo feem ntau yog siv rau kev sib tsoo nyuaj, suav nrog kev sib tsoo hnyav thiab kev sib tsoo hnyav.
Cov pob zeb cog pob zeb tseem hu ua qhib coated xuab zeb siv. Cov xuab zeb siv yog npaj raws li qhov kev ncua deb ntawm cov khoom abrasive, yog li muaj qhov sib txawv ntawm qhov sib txawv ntawm ib qho abrasive. Raws li qhov yuav tsum tau siv, cov khoom abrasive feem ntau yuav tsum npog 50 feem pua rau 70 feem pua ntawm cov substrate nto. Txoj siv tawv muaj qhov ua tau zoo, thiab qhov chaw nruab nrab ntawm cov khoom abrasive tuaj yeem txo qhov txhaws ntawm abrasive chips thaum sib tsoo qee yam khoom.
4. Qhuav thiab ntub cov hlua khi
Qhuav zaj duab xis abrasive siv yog dav siv, vim hais tias abrasive siv sib tsoo yog "txias" sib tsoo, feem ntau tsis xav tau coolant los hlawv lub workpiece. Dry abrasive siv tsis tuaj yeem siv rau hauv kev sib tsoo ntub dej, vim tias cov nplaum siv hauv nws yooj yim rau affinity nrog dej los yog lwm yam xov xwm, poob ntawm adhesion, ua rau abrasive poob, txo cov durability ntawm abrasive siv, thiab yuav cuam tshuam rau kev ua. zoo.
Cov ntaub ntub dej ntub yog siv rau kev sib tsoo nrog cov dej txias, tab sis kuj rau kev sib tsoo qhuav. Nws tsis tsuas yog yuav tsum tau siv cov dej-resistant hluavtaws cob raws li lub hauv paus kua nplaum thiab cov kua nplaum sib xyaw, tab sis kuj tseem yuav tsum tau siv cov kua nplaum uas tsis muaj dej-resistant, thiaj li tiv thaiv kev yaig ntawm lub coolant. Wet-frosted siv sib tsoo tuaj yeem txo cov cua sov ntawm lub workpiece, tsis txhob thermal hlawv, txo thermal kev nyuaj siab thiab txhim kho qhov zoo ntawm lub workpiece.
