Ua rau thiab kev daws teeb meem ntawm Overpolishing
Tuag polishing yog cov txheej txheem ntawm kev siv cov cuab yeej polishing rau plastically deform lub nto ntawm cov khoom, yog li tshem tawm cov protruding ib feem ntawm lub workpiece nto thiab tau ib tug du nto. Cov cuab yeej siv rau polishing feem ntau yog whetstone strips, wool log, sandpaper, thiab lwm yam., thiab cov txheej txheem kev ua haujlwm feem ntau yog kev siv phau ntawv. Rau qee qhov chaw ua haujlwm nrog qhov zoo ntawm qhov yuav tsum tau ua, cov cuab yeej tshwj xeeb abrasive tuaj yeem siv rau kev sib tsoo zoo thiab polishing. Ultra-nplua polishing yog nias lub cuab yeej tshwj xeeb abrasive nruj nreem rau ntawm qhov chaw ntawm lub workpiece kom ua tiav hauv cov kua polishing uas muaj cov abrasives, thiab ua qhov kev sib hloov ceev ceev. Qhov saum npoo ntawm qhov sib tsoo no tuaj yeem ncav cuag 0.008μm.
Thaum lub sij hawm polishing txheej txheem, qhov teeb meem ntawm polishing ntau dhau yuav tshwm sim, uas yog, lub sij hawm polishing ntev dhau lawm, uas yuav ua rau lub deterioration ntawm qhov zoo ntawm cov cuab yeej abrasive, uas feem ntau tshwm sim nyob rau hauv mechanical polishing. Tshwj xeeb, muaj ob qhov sib txawv ntawm kev polishing ntau dhau, uas yog "txiv kab ntxwv tev" thiab "pitting corrosion". Cia peb saib seb dab tsi ua rau ob qho tib si thiab yuav ua li cas tshem tawm lawv.
Ua rau "Orange Peel"
Lub thiaj li hu ua "txiv kab ntxwv tev" yog hais txog lub siab roughness thiab irregularity ntawm polished nto. Qhov ua rau "txiv kab ntxwv tev" suav nrog ntau lub zog polishing, lub sijhawm polishing ntau dhau, overheating ntawm pwm nto, thiab ntau carburization ntawm workpiece. Piv txwv li, yog tias lub log polishing siv rau polishing, thaum lub sij hawm polishing tsis raug tswj, lub tshav kub tsim los ntawm polishing log yuav yooj yim ua rau "txiv kab ntxwv tev" tshwm sim nyob rau saum npoo ntawm lub workpiece.
Cov khoom sib txawv muaj qhov sib txawv ntawm qhov nyuaj ntawm kev tsim "txiv kab ntxwv tev". Cov ntaub ntawv uas muaj zog dua tuaj yeem tiv taus ntau dua polishing siab thiab tsis tshua muaj peev xwm tsim "txiv kab ntxwv tev"; Cov workpieces feem ntau yuav dhau los ua polished, ua rau "txiv kab ntxwv tev".
Kev ntsuas los tshem tawm "txiv kab ntxwv tev"
Hauv kev ua haujlwm tiag tiag, muaj qee qhov kev coj ua tsis raug. Thaum ntau tus neeg pom tias qhov zoo ntawm qhov chaw tsis zoo, lawv yuav xaiv los txhim kho qhov zoo ntawm qhov chaw los ntawm kev ua kom lub siab polishing thiab ncua lub sijhawm polishing. Qhov tseeb, txoj hauv kev no qee zaum tsis tsuas yog tsis txhim kho qhov zoo ntawm qhov chaw, tab sis nws yog qhov tsis zoo.
Txoj hauv kev kom raug tshem tawm "txiv kab ntxwv tev" yuav tsum yog tshem tawm qhov tsis xws luag ua ntej thiab tom qab ntawd siv cov cuab yeej abrasive nrog me ntsis coarser grain loj dua li tus lej grit yav dhau los los polish nrog lub zog me me. Los yog thawj zaug kev ntxhov siab txo cov khoom ua haujlwm ntawm qhov kub qis dua qhov kub ntawm 25 degrees Celsius, tom qab ntawd zom nws nrog cov cuab yeej zoo tshaj plaws kom txog thaum ua tiav cov txiaj ntsig zoo, thiab thaum kawg polish nws nrog lub zog sib zog.
Ua rau "pitting"
Lub thiaj li hu ua "pitting corrosion" yog qhov pom ntawm qhov chaw zoo li micro-pits ntawm qhov chaw ntawm polished workpiece. Qhov no yog vim qee qhov tsis yog xim hlau tsis huv, feem ntau nyuaj thiab nkig oxides, yog sib xyaw hauv cov hlau ua haujlwm. Yog hais tias lub polishing siab dhau lawm los yog lub sij hawm polishing ntev dhau lawm, cov impurities no yuav raug rub tawm ntawm cov hlau los tsim cov micro pits. Tshwj xeeb tshaj yog thaum lub purity ntawm cov hlau tsis txaus, cov ntsiab lus ntawm cov impurities nyuaj yog siab; Yog hais tias qhov saum npoo yog xeb los yog tawv dub tsis tau ntxuav, "pitting corrosion" yuav tshwm sim.
Kev ntsuas kom tshem tawm "Pitting"
Ua ntej ntawm tag nrho cov, regrind nto ntawm lub workpiece. Cov nplej loj ntawm cov khoom siv abrasive yog me ntsis coarser dua li siv ua ntej, thiab lub zog sib tsoo yuav tsum me me. Tom qab ntawd siv lub pob zeb mos thiab cov roj ua kom zoo rau cov kauj ruam kawg ntawm kev sib tsoo, thiab tom qab ntawd mus rau txheej txheem polishing tom qab ua tiav cov txiaj ntsig zoo. Thaum polishing, lub softest polishing cov cuab yeej yuav tsum tau zam yog hais tias lub grit loj yog tsawg tshaj li 1 hli. Qhov kev siv ntawm lub teeb khiav yuav tsum tsawg li tsawg tau, thiab lub sijhawm yuav tsum luv li sai tau.
