Indima YeZixhobo eziQukethe i-Resin-Based Diamond Polishing Pads

Njani iZixhobo ZiyaKwabiwa Ukugcina kweDiamond Kunye NeBude bePad

Isampuqiso sebinda kwi-pads zokuphazanyiswa ze-diamond ezisezindimeni zenkunkuma sivala uhlelo oluhlanganisa lezi ziqhamo zomsebenzi okungcono kuzo zonke izindawo eziphathelene nazo. Izinkuni ezinhle zokubinda zihlala zihlaba lezi zindalo ngemizuzu engu-18 kuya ku-22 ngaphezu kwezindalo ezingcono ngoba zihlala zihlaba lolunxulumano olukhangelwa ngempela ngemuva kwemfundo yesifundwana esendulo. Kodwa kukhona futhi into engeyiyo. Xa lezi zibonda ziyaphakama kakhulu, zingahlala zihlaba izindalo kude kodwa lokhu kusho ukuthi iphetha eligcwele liyaphazanyiswa ngokusheshayo kunesikhathi. Futhi yini okuhlala kusenzeka? Iphetha liyaphoyiswa ngaphambi kokusemthandabeni nakuba ikhiye ikhiye yiziqhamo eziningi ezisemgangalweni.

Ukusebenza Kwesampuqiso njengesivumelwano Sokwesekela Izinqumo Ze-Diamond

Xa izimoto ezivuthiweyo zisetyenziswa, zakhula lo mfundo we-3D onjalo owahlukahlukene ngokugcina kwezintambo zodwa. Lo mgca ungavumeli ukulahlekelwa okulungile kusuku lonke olusha luhlolwe ekusebenzeni. Ngaphezu koko lezo zinto zingasebenzisa ubute uzulu, zilindele njalo xa ubute bufika ku-300 degrees Fahrenheit engalahlakali. Ukufumana uhlelo lwempilo olufanelekileyo lunjalo kakhulu ngoba kumele lukhokele isiphazamo esifanelekileyo phakathi kokuba izindonga ziyaphuma kangakanani kusuka kumgca futhi ukuba yini impilo yokubamba ihlule emva kwehlobo. Isiphumo? Izixhobo zokugcina zilinda kusuku lwe-30 kuya kude ku-50 ngesilingo kunazo eziyodwa ezizinzileyo ezenziwa ngendlela efana naleyo ekhoyo namuhla.

Ukuphakanyiswa Kwesimo Sokubamba Kuhlukaniswa Kwesimo Sezindlela Ukuze Kuthole Indlela Ehlukile

Ubunzima bezinto	Uhlelo Lomlando Olunconyelwayo	Isiphumo Sekusebenza
Granite (>6 Mohs)	Iphenolic enezimiso eziphakade	Ikhubaza ukuthembeka kwesidwaba
Marble (3–5 Mohs)	Imithwalo ephephileyo ye-epoxy	Kuthula ukugweba okusuka kumzimba
Simente esipolishiwe	Iziblando zepolyimide eziphakeme	Isusa kakhulu ukwakha kweglaze

Ubunzima obuthambile bokugcina buhamba ngokukhuphuka kwe-diamond—kuya kusuka ku-15% ngokushesha emagcineni embalwa emabodini ahlanzekileyo—noma ukuglaziwa kwepadi, okudinga ukulungiswa okwenzelwa kabombilini noma katholukathulu ngokusheshayo.

I-Phenolic Resin: I-Binder ephathelelayo kwi-Resin Bond Matrix

Amaphenolic resins ayakhiwa kabusha kusuka kwezindilinga eziphathelene ngokupheleleyo ezibaleni le-65 ukuya ku-70 phesenti yezinhlangothi zonke ezigcwele kuzo izinhlangano eziqashelwe kuzo i-resin ezenziwa kuzo izinhlophe zodiamond njengoba zidinga ukulungiselela okuhambisana phakathi kokuqina xa kuthathelwa isimo nokuqina kwesithunzi. Kanti ke, lokhu kuyizinhlangano ezivalekileyo ezenziwa kusuka kwi-phenol ne-formaldehyde ezoqhakamisa, zenzela into eyayisikhathi esiqinile kangaka esibambelela izinto ze-diamond noma kube sekube siphakeme kusuka kwi-300 degrees Celsius ngokwembono ye-industry yesikhathi samaqembu. Okukhomba konke kubo akuyiphela kuphela iqiniso. Iindlela zokwenza izinhlangano ze-phenolic zihamba ngama-35 ukuya ku-40 phesenti ngaphansi kwezinye izinhlangano ezifanayo ezenziwa ngamagunya e-polyimide, kodwa futhi azenze ikhono elinganayo le-heat resistance. Lo haculo wezimali lunciphisa ngempela ukuhlonza kwabo kuleli qembu le-market.

Kungani i-Phenolic Resin Yahlala Evelele Emakhelweni Ama-Resin-Based Diamond Pads

Ukudalwa kwegunyathiwe yezinhlelo zokuphakama kubenza kube nempawu eyinkimbinkimbi yokudala idayimandi, ekususwa ngayo izindlela zokulahleka kwemfazwe njengoba isebenziswa ekupholisweni kwegunyathi esuka kwezinhlelo zepoxi. Uma isetshenziswa, lezi zinhlelo zifinyelela igunya eliphakeme kwi-Rockwell phakathi kuka-M110 ne-M120, lokhu kusho ukuthi abasebenzisi bafuna ubunikwane obuhle kakhulu ngendlela abathintwayo ngayo imithwalo futhi bapholise izipadi ngendlela epholile. Abakhethi abaningi basebenzisa izinhlelo zokuphakama kwegunyathi njengoba ziluma kuphela kusuku lwa-800 uze kube ngu-1,200 ngaphambi kokuthi kudingeka kubuyiselwe. Lokhu kumeke kube yinto eyodwa kakhulu ezindaweni ezinezimali eziningi nezikhala zezindlela apho izikhathi ezingavukiyo ziphazamisa imali kanti ubuchwepheshe buyingqinathi.

Ukudalwa nokukhuseleka Kukhuni Kwezinhlelo Zokudala Ezisekelwe Kugunyathi

Izibhalo ezihlukahlukene zihlanganisa:

• 40–50% igunyathi resin (umthwalo omsiza)
• 30–35% izindlela zemineral (isb., silicon carbide ukulahleka kwekhuni)
• 15–20% idayimandi grit (igcobo lilizwe ngaphandle kwezipadi)

Lokhu kwenziwa kufinyelela indawo yokuguqulwa kwaglasi (Tg) ye 280–320°C , kungaphezulu kwe-epoxi resins nge 60–80°C . Inethiwekhi ephambanayo isiphazamise ukuphazanyiswa ngexesha lenkohlakalo enkulu, ngelixa izifiki zihlela umthwalo kabusha kaninzi kunazo ezidingekayo.

Izingxenye Ezilahlekileyo KwiFlexibility Ngemizuzwana Yenkohlakalo Esheshayo

Xa kuthathelwa ngamandla akhe amadoda angaphandle kokungama-12 newtons ngomkhawulo wamathuba, izinto ezinezintliziyo zika phenolic zihlukunyezela izinkinga zakho, ikakhulu emsebenzini wokususa i-epoxy kumhlanga wobuchwepheshe. Lokhu kubangelwa ukuthi izinto zibhubhise kumaqondo noma kugcine, okwenzela ukuthi izidimantayi ezitholakala kuzo ziphumele rate yezingu-30 kuze kube ngu-35 iphasenthi ngaphezulu koko okwenzekayo nezinye izinhlayiya eziphathelene i-polyimide no-phenolic. Izivivinyo zasekuhlaleni zibonisa ukuthi emva kwemizuzu engu-8 ngokuvamile yokuwekisa kahle, lezi zinkampuni kuzozibeka kuphela okungenani ama-80 kuya kuma-85 iphasenthi yokugcina kwazo ekugcineni. Abasebenzi abaningi bakhetha phenolic nakuba kunjalo njengoba bayadinga into etholakala ngokulungile futhi ibe nempiyeni, nakuba kunjalo kusho ukuthi kudingeka kusebenze ngokuthi kunezinkinga zokudonsa phambili.

Ukulinganisa Izici Zokudweba: Phenolic, Epoxy, kanye ne-Polyimide

Izikhumbula Zezenzo: Phenolic vs. Epoxy vs. Polyimide Resins

Izixhobo zokudlulisela ezahlukeneyo zibonisa iinkcukacha ezahlukene xa zizamiswa. Ngokomzekelo, izinxelelo ze-phenolic zibuyisa amaqatha e-diamond ngaphezu kuka-85% ukuya ku-92% nangona ubomi bubakho ngu-200 degrees Celsius njengoko kuchazwe kwi-Journal of Materials Engineering ngo-2021. Ezi zavutha i-epoxies ngama-15% ukuya ku-20% ngexesha apho kukho ubuhlungu obukhulu. Kodwa, i-epoxies zinezinto ezizimeleyo, ikakhulu ngokuba zingcono ekulawuleni ubunzima. Ukuhlola ngokwesiNtlobo D256 kubonisa ukuba zingasebenzisa ngaphezu kuka-30% kunazo zinye izinto. Kwanjalo kukho i-polyimide eyaziwayo kakhulu ngokumelana nokunxusana kwamandla. Inamandla okugcina kwe-80% yesilingo sakhe nangona ubomi bubakho ngu-300 degrees Celsius, yaye ibe yisixhobo esidingekayo kumsebenzi wokuphila kwezibini zasemoyeni apho ukumelana nokunxusana kwamandla kuyiyo nje inyaniso.

Ubunzima, Ukumelana Kwamandla, Nezintlobo Ezilondolosayo Zokusebenza

Ukuthola ibhalansi efanele phakathi kokuqina nokushisa kubalulekile lapho kusetshenziswa izinto eziqinile. Ngokwesibonelo, ama-resin e-phenolic anesakhiwo esiqinile kakhulu esinokumodyuli ka-Young cishe ongu-3.5 kuya ku-4.2 GPa, okusebenza kahle ekupholisheni izindawo zegranite kodwa akuphathi kahle ukudlidliza. Khona-ke kukhona i-epoxy enezinga eliphansi kakhulu le-modulus cishe elingu-1.8 kuya ku-2.4 GPa. Lokhu kwenza kube ukukhetha okungcono ekusetshenzisweni kwe-marble lapho umehluko emazingeni wokunwetshwa okushisa uvame ukuholela ekuqhekekeni okuncane okwenzeka ngokuhamba kwesikhathi. I-polyimide ihlala phakathi kwalezi zinto ezimbili. Ingasebenza ngokuqhubekayo emazingeni okushisa afinyelela ku-280 degrees Celsius futhi yeluleka cishe ngo-12 kuya ku-15% ngaphambi kokuqhekeka, empeleni kungama-40% ukuvuleka okuphezulu uma kuqhathaniswa nemikhiqizo evamile ye-phenolic emakethe namuhla.

I-Epoxy ne-Polyimide: Ukusetshenziswa Okuhle Emkhathini Onamazinga Okushisa Aphansi Noma Aphezulu

Kwiminyaka engaphansi kwe-50°C, i-epoxy ishaya inkosi yomkhakha, ibambe ngaphezu kwesilinganiso se-82% xa kufakiwa ukulungisa izikhala ze-terrazzo ngoba inakekela nemvula kakade xa ikhipha izinto ngenye. Xa sibheka esinye isahluko, ukusetshenziswa kwe-resin ye-polyimide kakhuthaza kabili kuphela ngemva kuka-2020 ngokuthi ikhethwe ekupholisheni izilalo zezithuthi ezihlakaniphiwe nguqobo. Okukhanya kwi-polyimide kukuthi ihlangana nezici eziphinde ziphinde zi-phenolics ne-epoxies. Ithola ubunzima bokwephula obujwayele ku-phenolics njengoko ibuyisela ubunjingili obuhambelana no-epoxies. Lokhu okuthile kusho ukuthi iziphathephate zilindile kangcono futhi—ngaphezu kwe-18% kuya kuye-22% ngekuhamba kwesikhathi esikhulu emva kwe-250°C ikhanda kulinganiswa nozinkinga zezinhlelo ezenziwa kuleli xesha.

Ukudala Kwesimo Se-Resin Kunzululwano Kwe-Polishing Pads

Ukulungana Phakathi Kwe-Resin, I-Filler, Ne-Diamond Content Kwisimo Se-Bond

Iqiniso lokusebenza kwe-resin bond kuyaphakama ekutholeni umunye ngamunye. Ngokuvamile sibheka ku-25 ukuya ku-35 iphesenti ye-resin ngomunwe, njengezibonakude zika-diamond ezenza ama-30 ukuya ku-40% yesimo, nezibonakude ezibizwa ngama-fillers ezenza amanye ama-25 ukuya ku-35%. Xa izindlela ze-diamond ziyekisela i-40%, konke oku kuhlala kuhluleka ngokwesiqiniseko ngoba ubuchwepheshe bube yinkimbinkimbi futhi izigaba sihlaselwa ngokushesha kakhulu. Kungasekhona ikhrazi elanele phansi kuka-25%? Lokhu kudala izinkinga ngekhubazeki kumsebenzi wokusebenza. Ukusebenza kwemarble kudinga ukuqaphelwa ngokuphathelene ngoba yimongo enhliziyo. Izigaba lelo msebenzi zihlanganisa resin flexibility mpaka ku-38% ukuze kube yisivinini esifanelekileyo somgwa ongcwele. Kodwa-ke, igranite ihluke. Ngenhla eminingi njenge-granite, abayenzayo bayasebenzisa ama-phenolic matrices etholakala ngama-32 ukuya ku-34% ye-resin ukuze bakwazi ukufinyelela isenzo sokugcina esidingekayo kumehloli embi.

Indima ye-Fillers nezimodifying enhlanza iqiniso

Ukufakela izimpendulo njengepulutha yekopha ngaproximali kusuka ku-15 ukuya ku-20 iphesenti noma ikhalasiyam karbhayidi phakathi kwe-12 ne-18 iphesenti kusiza ekulawuleni ubude bezulu futhi kubeke wezivikelwa zangele. Ngokwesicelo esiphoswayo eJournal of Materials Engineering ngoPitori, izilinganiso ezinezikophini zikopha zihlisa umthwalo wamandla ngaproximali kusuka ku-23 iphesenti kunazo ezinye izilinganiso eziphethilwayo. Izifako ezisekelwe kusayilika zizondla isahluko ngendlela esodwa emaphethelweni okugaya, lokhu kusho ukuthi lezi maphethelwana ihlala kusuka ku-30 kuze kube ngu-50 ihora ezidinga kwemisebenzi yokugaya enguqulayo. Uma kudingeka kubekwa khona ukuthula kwesimo, abayikezela bayafaka izici ezincane zebhubhesi (ngaproximali kusuka ku-3 kuze kube ngu-5%) noma izigaba ezimnyama zegrafayithi (okuvamile kusuka ku-2 kuze kube ngu-4%). Lezi zifako zivumela amaphethelwana okugaya ukuthi iyisiseko futhi ivuselele kuzindikirho ezingavumelekile ngaphandle kokuthi ivuleke uma kusebenziswa kumazwi angahambelani.

Isilinganiso sasekhomikhali sangaphandle sesitshalo kuye ku-Diamond (1:0.8–1:1.2)

Izinkomba eziningi zomkhakha zincoma ukuba kusetshenziswe ingxube ye - 1: 1 ye - resin namadayimane lapho kwenziwa umsebenzi ovamile wokupholisha ukhonkolo. Lokhu kulungiselelwa ngokuvamile kwenza amamitha-skwele angu-120 kuya kwangu-150 ngaphambi kokuba kudingeke ukuba kushintshwe, kucatshangwa ukuthi isilinganiso sokudla singamamilimitha angu-2,5 ngomzuzwana. Nokho, kulabo abafuna ukuqedela okufana nesibuko ezindaweni zamatshe, abakhiqizi bavame ukusebenzisa indlela ehlukile. Ziyokwandisa izinga le-resin libe ngu-1: 1.2, okusho ukuthi isivinini sokusika siyoba phansi kodwa imiphumela iyoba bushelelezi kakhulu uma isilinganiso sokugqwala singaphansi kuka-0.5 microns. Ngakolunye uhlangothi, amafomula okugaya ashukumisayo anciphisa i-resin ukuze athole isilinganiso esingu-1:0.8. Nakuba lokhu kukhulisa amandla okusika, kusho nokuthi kudingeka kushintshwe amadayimane kaningi. Ngokwe-Abrasives Monthly yangonyaka odlule, opharetha bangalindela ukuthi izindleko zabo zedayimane zikhuphuke noma kuphi phakathi kuka-18% no-22% ngalezi zinhlobo zokumiswa.

Isicelo	Amaphesenti entshisekelo	Amaphesenti edayimane	Amaphesenti okugcwalisa	Isikhathi Sokusebenza (Amahora)
Ukupholisha Imabula	36–38	32–34	28–32	90–110
Ukugaya Igranite	32–34	38–40	26–30	70–90
Ukufakwa Kwebhentshi	30–32	34–36	32–36	120–150

Lokhu kuchazwa ngokulinganayo kwezimodi kusungulwa ukuthi ipadi zifinyelela imilinganiselo yendawo engaphansi kuka-30 µm noma kudinga ukugcina phakathi kwemisebenzi - oku kuyinto ekhokhelwa ngamahora angama-$740 kulawulo olukhulu lwesithuthi.

Imisebenzo kanye Nempumelelo Ngokubetha I-Diamond Ngokusebenzisa I-Resin

Ukufaka I-Binder Systems Kwi-Marble, Granite, kanye Ne-Polished Concrete

Amaphadi epolishi yediamond ebekwe ngokwenziwa kwezibalo ezintsha zokwenza iziphiwo ephumelela kabanzi ngoba zenziwe ngokuthinta imithwalo ngamunye ngekhemikhali esihlukaniswe yeziphiwo. Xa usebenzisa nezimali ezinzima njenge marble, abakhiwa basebenzisa izinkinga ezifanelekile ze phenolic ne epoxy resins. Lezi ziphikiswa ezithile zikusiza ekukhuliseni kwizinye izinkomba eziphezulu kanti futhi kugcine mayelana nomkhawulo we-85 ukuya ku-92 ye-diamonds ingcanyiwe njengoba kuchazwe kumlando wasekuqaleni kuka-2024. Kuzindawo ezinzima kangaka njenge-granite, ifomula ishintsha futhi. Iziphiwo ezingathethi kakhulu kanye nezinziso ze-ceramic zingasebenzisa amandla angaphezulu kuka-300 degrees Fahrenheit xa kugubhuwa ngokuqinisekile. Inkinga yonke kube yizidingo lezi zinhloso eziphuculiwe, okuphumelela kuye kunesi-thilika esishiyayo se-construction industry. Abasebezelwano bafuna lezi ziphiwo ezintsha zokwenza iziphiwo ukuze kwenzeke ipolishi engcono, enobuhlungu obubi kuzindawo ezivalelwe kakhulu kwe-polished concrete floors lapho ubumnandi kakhulu buhluke kakhulu.

Izikhonkothi Zokugcina Ze-Resin Ezintsha Zokugcina Kwamazibuko Angaphansi

Umbuso wokugcina kwezikhonkothi zokugcina kwamazibuko kunezikhathi ezilishumi nesihlanu kunezikhathi eziphakeme kakhulu kwe-quartz ne-terrazzo, kancane kabili kunokuba kungaba yisimo esiphatha ngaphambilini. Okwenzela ukuthi lezi zinto zibe nzima kakhulu kukhona izikhathi zokugcina ezingama-85 kuya kuma-90 HRA kumxholo wa-Rockwell, kodwa futhi zizokuphathwa kahle emva kokusebenza ngeminyaka. Abalingi balesigodi bathi kusuke kube noba kubalulekile ukusebenzisa le mithombo ethuthile kumaseko amasha aphathekayo apholile, lapho kabhala ukuthi kusetshenziswa amanzi ngokungenani kabili kakhulu xa kufakwa isilingo sezindlu zokuhlala eziningi, ngisho ukuthi kucimeke kahle kakhulu ngokuprosesa.

Izinhlelo Ezintsha Ze-Resin Ezihlanganisa Izimo Ze-Phenolic Ne-Polyimide

Izikhonkothi ezimbili ezintsha zihlanganisa ubukhona bezephenolic no-flexibility be-polyimide, zifaka izidingo zokusebenza kwezinkinga eziningi. Lezi zinhlelo zibonisa:

Umthawu	I-Phenolic Resin	Polyimide Resin	Indlela ephindelwe
Ukumelana Nokushisa	550°F	700°F	625°F
Umsindo lwemidibaniso	12,500 psi	8,200 psi	10,800 psi
Diamond Retention	89%	76%	83%

Idatha itholakala kwi-2024 Composite Materials Benchmarks

Indlela ephindelwe iyaphawula ngokukhulu emisebenzini yezindlu zezindlu, lapho amathuba athintana kakhulu kanye nesimo esihlukahlukene sokuqina kufuneka kube khona umsebenzi othandayo wobumba.

Imibuzo Evame Ukubuzwa

Ubani ubumba obuthile ekupolisheni kwamathambo akhanya abase resin?

Ibhenda isebenza njengomncinci kumapadi akuphahla okwesiliva engenziwa ngaphansi kwesiphiwo, ihlotshanisa iziqhamo zokukhazimula kusayipheni esisebenzayo, ikhathaza ukugcina kwe-diamond nokuphila kwamapadi.

Kungani iziphiwo ze-phenolic ziyafathelwa kumabhenda wezibaya zokukhazimula ze-diamond?

Iziphiwo ze-phenolic ziyafathelwa ngoba zinezilinganiso zokuthuthuka nokweqina kweyobuchwepheshe, kunazo futhi izindleko ezincane zokwakha kunazo ezengezansi njengeziphiwo ze-polyimide.

Izibhenda ezahlukene ziphatha kanjani kusizo sokusebenza kwamapadi okukhazimula?

Izibhenda ezijena ne-phenolic, i-epoxy, kanye ne-polyimide zinikeza ukuthuthuka nokweqina kwe-flexural okwahlukene, kuhlanganisa ukusebenzeleka kubo kumadelela ahlukeneyo, kuze kube yisigaba kuya kuma-granite.

Maphi amanyanga aphathekayo kunesayensi yokukhazimula ye-diamond engenziwa ngaphansi kwesiphiwo?

Ukuphatha kwayo kwegesi le-resin kuvumela ukuthi chemically ebhendini ibe yidingekile ukuze kuthuthuke ukusebenza kwamapadi okukhazimula kumadelela njenge-sigaba, i-granite, kanye ne-concrete ekhazimulwe.