Acrylic Edge Finishing Techniques piav qhia
Qhov teeb meem Crazing uas tsis muaj leej twg pom tuaj
Nyob nruab nrab ntawm 2020 thiab 2022, cov neeg tsim khoom thoob plaws hauv kev lag luam pib tau txais kev lees paub hu uas tsis muaj txiaj ntsig. Cov ntaub ntawv xa mus rau qhov zoo tshaj plaws tau tsim kab laug sab-web tawg raws ntug. Ob lub hlis tom qab kev teeb tsa. Peb lub hlis. Cov qauv zoo ib yam: cov pob txha zoo sib kis los ntawm nplaim taws- polished npoo, ib txwm nyob hauv cov chaw kho mob, tsev kawm ntawv, chaw muag khoom.
Qhov laj thawj tau siv sijhawm ib ntus los pin. Ntawm Signs101.com, ib tus neeg tsim khoom tau sau tias: "Peb tau ua cov nplaim taws tau ntau xyoo uas tsis muaj teeb meem ... Tam sim ntawd 2 xyoo dhau los cov neeg vwm tau vwm tiag tiag, cov neeg saib xyuas muaj lub raj mis ntawm 70/30 thiab nyiam siv txhua yam."
Cawv tshuaj tua kab mob. COVID tau hloov cov txheej txheem tu txhua qhov chaw, thiab cov npoo acrylic uas tsis tau muab tshem tawm tau ua tsis tiav ntawm kev sib cuag nrog isopropyl cawv.
Qhov no tsis yog qhov teeb meem fringe. Nws hloov kho li cas tag nrho kev lag luam xav txog kev ua tiav. Dab tsi tau raug kho raws li cov kauj ruam kho kom zoo nkauj tau dhau los ua qhov kev txiav txim siab ncaj ncees nrog rau lub sijhawm ntev -.
Cast Versus Extruded
Ua ntej nkag mus rau hauv cov txheej txheem tshwj xeeb, qhov kev sib txawv no yuav tsum tau ua kom pom tseeb. Nws cuam tshuam txhua yam hauv qab dej.
Cast Acrylic
Cam khwb cia acrylic yog tsim los ntawm pouring kua monomer ntawm iav daim hlau thiab cia nws polymerize. Cov saw hlau molecular ntev dua. Cov khoom yog nruj dua. Nws tshuab huv si -chips tuaj tawm raws li cov khoom sib txawv es tsis yog yaj rov qab rau hauv lub cuab yeej.
Extruded Acrylic
Extruded acrylic tau raug thawb los ntawm rhuab tuag. Shorter molecular chains. Cov qauv kev ntxhov siab sib txawv. Ntau dua rau cov teeb meem thaum lub sijhawm thiab tom qab ua tiav.
Ib tug machinist ntawm Practical Machinist tau piav qhia qhov txawv ntawm qhov no: "Extruded acrylic yog qhov nyuaj heev rau tshuab zoo vim tias nws tsis nruj li cam khwb cia acrylic, ntxiv rau nws yog qhov nyuaj heev rau kev ntxhov siab tawg tom qab machining thiab thaum polishing nws yooj yim heev kom tau qhov chaw sov thiab pib crazing."
Tab sis nws tsis yooj yim li "cam khwb cia zoo dua." Cov khoom siv extruded yeej siv cov nplaim polishing yooj yim dua li cam khwb cia. Cam khwb cia yuav tsum tau prep ua hauj lwm ntxiv -sanding, scraping- kom ua tau zoo xws li nplaim taws- polished tau. Cov lus hais los ntawm Signs101 captures qhov no: "Cast acrylic txiav smoother thiab tsis yaj li phem li extruded acrylic. Extruded acrylic nplaim polishes zoo heev. Cast tsis ze li."
Yog li kev xaiv cov khoom siv thiab cov txheej txheem tiav yuav tsum tau txiav txim siab ua ke. Khiav extruded los ntawm CNC workflow optimized rau cam khwb cia yuav ua rau melting. Nplaim polishing cam khwb cia yam tsis muaj ntug kev npaj yuav tawm cov cim pom. Cov khoom dictates tus txheej txheem, los yog tus txheej txheem dictates cov khoom. Xaiv ib txoj hauv kev thiab nyob twj ywm.
Nplaim Polishing
Hydrogen{0}} nplaim taws. Kub qhov chaw nyob ib ncig ntawm 1,850℃txog 2,200℃nyob ntawm cov khoom siv. Cov nplaim taws melts lub npoo npoo, uas resolidifies du thaum nws txias.
Ceev yog lub ntsiab kom zoo dua. Daim ntawv 4 × 6 tuaj yeem ua tiav hauv tsib feeb. Cov khoom siv raug nqi qis - nkag- theem nplaim polishers khiav ob peb puas duas las. Rau kev kos npe, cov lus qhia yooj yim, txhua yam uas yuav tsis raug tshuaj xyuas ze, cov txiaj ntsig tau txaus.
Cov txheej txheem nws tus kheej yuav tsum muaj xim xiav, ze li pob tshab nplaim txog 75 hli ntev, tuav ntawm 45 degrees rau ntawm ntug. Cov nplaim daj txhais tau tias tsis tiav combustion; koj yuav tso cov pa roj carbon monoxide thiab tau txais qhov tsaus ntuj. Kev txav mus los yuav tsum ceev- ntau qhov kev hla nrawm ua haujlwm zoo dua li ib qho qeeb qeeb. Kev txav qeeb ua rau muaj cua sov ntau dhau hauv ib cheeb tsam.
Thermal stress yog lub hauv paus kev txwv. Thaum tshav kub kub sai- lub voj voog txias tawm qhov seem seem hauv cov khoom ntug. Qhov nro ntawd ua rau cov ntug tsis muaj zog rau ib puag ncig kev ntxhov siab tawg thaum raug rau qee yam tshuaj. Cawv yog qhov ua txhaum loj, tab sis ammonia thiab acetone ua rau muaj teeb meem.
Kev kho annealing yog ncaj nraim tab sis ntxiv sijhawm. Tuav cov khoom tiav ntawm 82℃rau ib mus rau ob teev rau 3 hli tuab. Txias maj mam- ob teev yam tsawg kawg nkaus rau qhov txias. Hla cov kauj ruam no thiab koj tab tom xa cov khoom lag luam uas yuav vwm rau hauv thaj teb.
Ib qho ntxiv uas ntes tib neeg: nplaim taws polishing ua ntej gluing yog qhov yuam kev. Lub thermal kev nyuaj siab cuam tshuam tsis zoo nrog hnyav cement nkag mus. Fractures tsim nyob ib ncig ntawm cov kab nyiaj hauv lub lis piam. Qhov sib lawv liag uas ua haujlwm yog kua nplaum ua ntej, kho thaum hmo ntuj, tom qab ntawd nplaim taws polish qhov sib dhos.
Pob zeb diamond polishing
Cov khoom siv tsis siv neeg khiav lub workpiece ntug tiv thaiv cov pob zeb diamond abrasive theem. Grit sequences txawv ntawm lub tshuab, tab sis cov cuab yeej zoo dua mus txog 3,000 grit sib npaug. Nto roughness tom qab zoo pob zeb diamond polishing ntsuas 18 mus rau 25 RMS- mus txog qhov pom tseeb ntawm daim ntawv qub. Kev lag luam terminology qee zaum hu qhov no "tsev cia puav pheej zoo" lossis "qib kho qhov muag."
Lub tshuab yog ncaj nraim sib tsoo thiab polishing, tsis txawv ntawm cov ntsiab lus ntawm tes tiav tab sis sai dua thiab zoo ib yam. MCD (monocrystalline pob zeb diamond) cutters tsim cov npoo ntse tshaj plaws. PCD (polycrystalline) kav ntev dua tab sis tsis ua tiav qhov pom tseeb zoo ib yam.
1,000 RPM
1mm - 120 hli
Tsis Stress
Cov khoom siv khiav ntawm li 1,000 RPM rau tus qauv 18-inch txoj kab uas hla log. Cov khoom thickness muaj peev xwm ntawm 1 hli mus rau 120 hli nyob ntawm seb lub tshuab teeb tsa. Ib txheej ntawm hloov cutters raug nqi ib ncig £ 1,000. Tag nrho cov tshuab peev nyiaj tau txais $ 30,000 rau ntau dua $ 100,000 rau kev lag luam.
Geometry yog qhov txwv. Pob zeb diamond polishing tuav cov npoo tiaj zoo. Bevels zoo. Cov nkhaus nkhaus, sab hauv txiav, nruj radii-cov no xav tau ntau txoj hauv kev. Rau kev ua haujlwm ntawm fabrication, pob zeb diamond polishing npog lub siab - ntim ncaj- ntug ua hauj lwm thaum lwm txoj kev lis cov kev zam.
Tsis muaj teeb meem thermal stress nrog pob zeb diamond polishing. Tsis tas yuav tsum tau annealing. Cov ntug tsis nqa tib yam tshuaj lom neeg tsis zoo li nplaim taws- polished nto.
Laser txiav tsim nws tus kheej ntug tiav
CO2 lasers ntawm lub zog tsim nyog txiav thiab polish hauv ib qho kev ua haujlwm. Kev sib raug zoo yog kwv yees li 8 mus rau 15 watts ib millimeter ntawm cov khoom thickness. Ib daim ntawv 6 hli yuav tsum muaj tsawg kawg yog 60 watts. Rau 12 hli, koj xav tau 100 watts lossis ntau dua.
Cam khwb cia acrylic lasers huv dua li extruded. Ntug los tawm sharper, nrog tsawg pom striation. Extruded zoo li pom cov cim kab raws li txoj kab nqaj, qee zaum qhov kev ntxhib los mos ntawm melting es tsis huv vaporization.
Cov ntaub ntawv ACRYLITE technical (acrylite.co) qhia qhov tsawg kawg nkaus 40W rau lub quarter-inch khoom, nrog 180W zoo rau cov khoom tuab. Kerf dav khiav 0.010 txog 0.020 nti. Ua kom pom tseeb txoj hauj lwm tseem ceeb-0.030 txog 0.060 ntiv tes rau hauv cov khoom feem ntau ua rau qhov zoo tshaj plaws ntug zoo.
Hauv qab li 12 hli thickness nyob rau hauv cov khoom cam khwb cia, laser- txiav npoo feem ntau zoo txaus rau nkoj yam tsis muaj lwm yam tiav. Tshaj ntawd, lossis nrog cov khoom siv extruded, kov - feem ntau yuav tsum tau ua haujlwm. Nplaim taws ceev ceev, los yog lub teeb sanding thiab buffing.
Laser txiav tsim thermal stress zoo ib yam li nplaim polishing. Tib qhov kev xav tau annealing siv yog tias cov khoom yuav raug cuam tshuam rau cov tshuaj ntxuav tu nruj heev.
Technical Specs
Kerf Dav:0.010 - 0.020 ntiv tes
Ua kom pom tseeb:0.030 - 0.060 ntiv tes rau hauv cov khoom
Lub zog (1/4 "):Min 40W, Zoo tshaj 180W
CNC Routing Parameters
Feem ntau cov teeb meem zoo hauv CNC ua haujlwm yog los ntawm qhov tsis raug tsis yog cov khoom siv lossis cov khoom siv.
Qhov teeb meem melting tshwm sim tas li ntawm lub rooj sib tham machinist. Cov khoom fuses mus rau lub cutter, ntug los ntawm ntxhib thiab clouded. Yuav luag ib txwm, lub spindle ceev yog tsawg dhau los yog tus nqi pub mis tsis raug.
>Tsawg kawg spindle ceev: ~ 18,000 RPM
>Qhov tseem ceeb: Hauv qab 16,400 RPM ua rau melting
>Pub Tus Nqi (ntawm 18k RPM): 75 txog 300 IPM
>Lub hom phiaj Chip Load: 0.001 txog 0.004 nti rau ib tus hniav
Tooling xaiv: ib zaug -flute O-geometry carbide kawg mills. Lub Onsrud 52-638 tuaj ntau zaus hauv kev sib tham hauv lub rooj sab laj uas yog qhov kev xaiv zoo. Tsis txhob khiav cutters uas yav tas los kov ntoo lossis MDF. Embedded particles paug cov ntug acrylic.
Txiav lub tswv yim cuam tshuam cov txiaj ntsig. Roughing hla nrog nce milling, ces tag nrho - qhov tob tiav hla uas tshem tawm tsuas yog 0.02 ntiv tes. Kev ua tiav tiav yog qhov txiav txim siab kawg ntug zoo.
CNCZone muaj xov uas ib tug neeg nug txog kom tau txais cov npoo huv. Cov lus qhia ncaj qha: "Siv cam khwb cia acrylic. Extruded yuav yaj ntawm koj cov cuab yeej, cam khwb cia yuav txiav huv si. Nrog cov cutters ntse, koj yuav tsis xav tau coolant."
Routed edges xav tau kev ua tiav theem nrab. Qhov kev ua tau zoo: 180 lossis 240 grit qhuav, 320 grit tuaj yeem mus rau ob txoj kev, 400 grit thiab finer yuav tsum ntub. Dej ua kom txias thiab lubricant; qhuav sanding saum toj no 400 grit generates kev sib txhuam ntau dhau tshav kub thiab smears saum npoo es tsis txhob txiav nws.
Kev ua tiav tag nrho rau kev ua yeeb yam- cov npoo zoo: 180 → 320 → 400 → 600 → 800 → 1500 → buffing nrog cov khoom tsim nyog.
Buffing Technique
Nto ceev ntawm 1,200 thiab 4,000 ko taw ib feeb. Mos flannel log yuav tsum khiav mus rau qhov kawg. Lub log txoj kab uas hla feem ntau yog 6 mus rau 14 ntiv tes.
Tseem ceeb. Blue rouge rau thawj txiav, dawb compound rau qhov kawg tiav. Siv lub hauv paus siab ua ntej ua lub hauv paus rau qhov sib xyaw.
Cov txheej txheem nthuav dav uas tiv thaiv cov khoom ua haujlwm puas: pib buffing kev sib cuag ntawm ib qho - thib peb los ntawm ntug sab saum toj, tsis yog ntawm ntug nws tus kheej. Pib ntawm ntug cia lub log ntes lub workpiece thiab pov nws.
Buffing ua haujlwm zoo rau cov duab nyuaj. Curved nto, cov npoo tsis sib xws, contoured profiles- lub log hloov tau raws li qhov chaw ua haujlwm geometry. Nrog txoj cai polishing compound, siab gloss yog ua tiav. Kev lag luam - tawm yog ceev. Buffing yog qeeb, yuav tsum muaj kev txawj ntse ntawm tus neeg teb xov tooj, thiab tus nqi ntau dua ib daim dua li kev siv tshuab. Rau siab- qhov kawg zaub sawv thiab cov teeb pom kev zoo uas cov ntug zoo yog qhov tseem ceeb, nws tseem yog ib qho tseem ceeb hauv kev ua haujlwm.
Vapor Polishing (Siv txwv)
Methylene chloride vapor dissolves txheej txheej luv luv, uas resolidifies optically ntshiab. Pab tau rau cov geometry complex uas lwm txoj kev tsis tuaj yeem ncav cuag. Lub sij hawm raug ntsuas hauv vib nas this - peb vib nas this siab tshaj.
Cov tuam txhab loj xws li Evonik pom zoo tawm tsam nws. Methylene chloride yog ib yam kab mob carcinogen. Cov kev cai tswj hwm yog dav dav. Rau kev ua haujlwm dav dav, cov txheej txheem siv tau zoo.
Crazing Prevention Protocol
Ib puag ncig kev ntxhov siab tawg nyiaj rau 15 txog 25 feem pua ntawm cov yas tsis ua haujlwm feem ntau, thiab ntau dua 40 feem pua rau cov iav polymers zoo li PMMA. Cov kuab tshuaj me me nkag mus rau hauv lub network polymer, plasticize cov cheeb tsam hauv zos, pib microcracks uas propagates rau hauv pom crazes.
Kev tiv thaiv los ntawm peb yam.
Kev xaiv khoom
Siv cam khwb cia acrylic rau daim ntaub ntawv uas muaj tshuaj lom neeg raug. Qhov hnyav dua molecular muab kev tiv thaiv zoo dua.
Kev ntxhov siab
Anneal tom qab kev ua thermal- nplaim polishing, laser txiav, thermoforming. Standard sij hawm yog 82℃(180℃F) rau ib teev ib 3 hli (⅛ nti) ntawm thickness. Txias maj mam. Ob teev yam tsawg kawg nkaus rau cov khoom nyias, ntev dua rau cov khoom tuab.
Tshuaj Tswj
Cov xab npum me me thiab dej ntxuav. Tsis muaj cawv, ammonia, acetone ntawm acrylic uas tsis tau muab tshem tawm. Yog hais tias annealing tsis siv tau, sib txuas lus qhov kev txwv rau cov neeg siv kawg. Muab cov lus qhia ntxuav nrog cov khoom.
Lub rooj sab laj Sawmill Creek muaj cov ntsiab lus luv luv los ntawm ib tus neeg uas tau kawm qhov no los ntawm kev ua tsis tiav:
- (1) Yog tias koj laser txiav acrylic thiab tsis anneal nws, nws yuav craze thaum haus cawv.
- (2) Yog hais tias koj nplaim taws polished cov npoo, thiab tsis anneal nws, nws yuav craze thaum haus cawv.
- (3) Yog tias koj yuav extruded acrylic, es tsis txhob cam khwb cia, nws yuav craze thaum haus cawv.
Xaiv Txoj Kev Zoo
Cov paib mounted ntawm qhov siab, saib los ntawm kev deb
Nplaim polishing nrog annealing. Kev tsim khoom sai, tus nqi qis, zoo txaus rau daim ntawv thov.
Cov khoom muag muag, taw tes - ntawm - cov khoom yuav khoom
Pob zeb diamond polishing. Qhov zoo sib txawv yog pom. Ntug clarity tseem ceeb thaum cov neeg siv khoom saib ze. Tsim nyog rau cov khoom siv siab dua thiab cov nqi ua haujlwm.
Intricate designs, nyias cov ntaub ntawv, complex cutouts
Laser txiav, tejzaum nws nrog lub teeb kov -up. Ib txoj haujlwm tswj kev txiav thiab ua tiav ua ke.
Kev cai geometry nrog nkhaus
CNC routing ua raws li kev ua tiav ntawm tes. Kev ua haujlwm- hnyav tab sis tsim nyog rau cov duab uas cov cuab yeej siv tsis tuaj yeem ua tsis tau.
Kev siv tshuaj kho mob
Pob zeb diamond polishing ntawm cov ntaub ntawv pov thawj nrog tag nrho cov ntaub ntawv traceability. Tsis muaj vapor polishing vim qhov hnyav residue txhawj xeeb. Ntug yuav tsum yog burr-dawb thiab ua tau raws li cov qauv biocompatibility.
Zaub racks, khoom plig, cov khoom dai
Pob zeb diamond polishing. Qhov tshwm sim mus txog qhov pom qhov pom tseeb ntawm cov ntaub ntawv uas tsis tau ua tiav. Cov cuab yeej siv peev yog qhov tseem ceeb, tab sis cov khoom tsim tawm tau txais txiaj ntsig los ntawm kev sib xws thiab kev xa tawm.
Cov khoom loj loj xws li panels
Automated pob zeb diamond polishing kab tuav lub ntim.
Simple signage, cov khoom saib los ntawm qhov deb
Nplaim polishing ua rau tus nqi qis. Nrog kom zoo annealing, nws ua tau raws li qhov yuav tsum tau ua.
Zaj Lus Qhia
Ntug kev txiav txim siab ua tiav hauv kev tsim khoom cuam tshuam rau cov khoom lag luam kev ua haujlwm ntau lub hlis tom qab hauv daim teb. Kev haus cawv- ntuav tau qhia qhov no kom meej. Yog li puas tau txhua qhov kev lees paub los ntawm cov nplaim taws- polished daim uas tsis yog annealed, txhua lub melted ntug los ntawm tsis ncaj ncees lawm CNC parameters, txhua crazed daim ntawv cog lus kab los ntawm kev ua tsis yog ib ntus.
Qhov tshwj xeeb tseem ceeb. Hom khoom. Kev tswj qhov kub thiab txias. Annealing sij hawm. Grit kev nce qib. Cov no tsis yog kev xaiv kho kom zoo. Lawv txiav txim siab seb cov khoom puas ua haujlwm lossis ua tsis tiav hauv kev siv tiag tiag.
Cov lus nug txog kev ua tiav rau cov ntawv thov tshwj xeeb tuaj yeem xa mus rau peb pab pawg engineering.
