Kungani Ukuthutha Kukhona Kudingeka Kwezinkampani Zenkonya Ezidluliselwe

Isiphazamhlophe sokuthutha okufutshane kumsebenti wasegment, ukukhuthaza kwebhubhesi, nokubophelela kwebhubhesi

Amaphutha amancane wamahili ngaphakathi kwesekhethi sintered diamond esikhathazekile kakhulu ekukhuliseni kwayo nokwanda kwayo. Lezi ziphazha zizimele izindawo ezikho kuzo ukugcinwa kwezimali ezenzekileyo xa kusebenza, okungakholwa ukuba kuhlaba kakhulu kangangokuphindaphinda kabini. Xa lezi ziphazha zibonakala lapho izidolophu zihlangana nomthwalo ohlanganisa, yonke into ihlanjululwa. Lokhu kusho ukuthi izidolophu ziqaqamisa kuqala futhi izixhobo azilaleli njengalokho kufanele. Sisabona isekhethi esine-porosity engu-2% kuphela esisebenza ngokushisa okungu-15% ngaphansi xa kususwa i-granite, kunye nesilinganiso esikhulu kakhulu se-vibration—ngu-25% ngaphezulu. Ingenhla enkulu engunye yeyona yale ziphazha zilindele ukuthi iziqhamo ziqale. Ngeminyaka engakanani, lokhu kakhuthaza amathuba okuphila komcabango. Ngakho ke ukubheka le miphumela embulini ngaphambi kokuthi kususwa isekhethi kuyinto eyahlukene kakhulu. Ukuthola okubi kuqala kuvikela ukuthi konke kube lula futhi kuvikele ukuphila okungcono emva kwalokho.

Izinkinga ezihlukileyo zezinhlayiya ezingenziwa kwe-diamond: izilinganiso zomthubi, i-interfases yezigaba, nezidingo zokuthola izikhala ezingaphezu kwegunyana-milli

Ukuthola izikhala ezihlanganisiwe zedayimane elihlanganisiwe kuba nzima uma kuqhathaniswa nezinto ezivamile ngenxa yokwehluka okucasulayo kokuqina phakathi kwezinhlamvu zedayimane nezinsimbi ezihlanganisa izinsimbi. Ukungafani kubangela izinkinga ekuhlolweni kwe-ultrasonic njengoba izimpawu zihlakazeka, okwenza kube nzima ukubona izikhala ezincane ezingaphansi kwama-micron angu-50. Lapho kubhekwa imingcele yezinhlamvu, nemisebe ye-X iba nezinkinga ngoba ukuguquguquka kwezinto kuyaphazamisa. Futhi ungangivumeli ngisho ukuba ngiqale ngalawo mandla amancane ahleli eduze kwezinhlayiya ze-carbide ezivele zikhale izixwayiso ezingamanga. Izivivinyo eziningi zamanje azikwazanga ukuthola lutho oluncane kune-10 microns, okungase kungazwakali njengokuningi kodwa ngithembe, la maqembu amancane empeleni enza umonakalo ekudluliseni ukushisa futhi anciphise isikhathi sokusebenza kwethuluzi. Ngaphezu kwalokho, izinto ezihlanganisiwe ezihlanganisiwe zinalo mkhuba wokuqondisa izinto, ngakho ukuhlola izithombe okuvamile ngeke kukusize. Sidinga izindlela ezingcono ze-3D zokwehlukanisa izimbobo zangempela eziguqukayo ezivamile. Lesi simo sonke sibonisa ukuthi kusekhona igebe elikhulu ezinqubweni zethu zokulawula ikhwalithi zokwenza amathuluzi okuzisika asezingeni eliphakeme.

Ukuhlolwa kwe-Ultrasonic nokuhlola i-Acoustic Microscopy yokuhlonza izimbobo

I-UT ye-pulse-echo yokuthola i-bulk void kanye nokutholwa kokujula ezingxenyeni eziqinile

Ukuhlolwa kwe-ultrasonic kwe-pulse echo kusebenza kahle kakhulu lapho sifuna izikhwama zomoya ezinkulu kune-100 microns kulezo zingxenye zedayimane ezixutshiwe. Lobu buchwepheshe bukhipha amaza omsindo anemvamisa ephakeme abuyele kulokho okuqukethwe bese buhlola ukuthi kuthatha isikhathi esingakanani ukuba abuye. Lokhu kwenza ochwepheshe bakwazi ukuthola amaphutha afihliwe ngokunembile, ngokuvamile kungakapheli u-0.1 mm kunoma iyiphi indlela. Okwenza i-UT ibe usizo kakhulu ukuthi lawa magagasi omsindo angadlula ezintweni ezinesisindo esikhulu. Lokho kusho ukuthi izisebenzi zasefektri zingazihlola lezi zinto eziqinile ezenziwe ngedayimane ngaphandle kokuthi zidabuke ukuze zibone ukuthi yini engaphakathi. Ngokuyinhloko, angakwazi ukuskena izingxenye zonke ngesikhathi esisodwa futhi abone lapho izinkinga zingase zifihle khona.

I-scanning acoustic microscopy (SAM) yokuthola i-void ngesilinganiso se-μm esinokucaca okuphezulu kuma-interface e-diamond-binder

Ukubheka kwesivimba sokuvula, okanye i-SAM ngokufuphi, kusinika imininingwane engcono kakhulu xa sibuka izikhala ezincane phakathi kwezinduku nezinto zokudlulisela. Le ndawo ingathola izinkinga ezidelezile kusukela ku-10 micrometers. Uma siyafaka iziqhamo ezithintekayo emanzini apholile ekhanda esebenzisa umlilo, i-SAM iyakha izithombe ezijulile ze-C-scan ebonisa indawo apho izinyongo zaphulwa kulo futhi lapho kuneziphazanyo eziningi kakhulu ngokuthi izinkuni zosomi zibuyisela kanjani. Okwakhiwa kwalokhu kungcolisa kakhulu ukuthi kutholakala indawo apho isitresi siqhubeka ngalokho kuzikhala ezincane kunesikhathi esingaphezu kuka-50 micrometers. Futhi yini? Le zinkinga ezincane ziwelashwa ukuthi zilungise izixwayiso ngaphandle kwezidingo ngenkathi kusebenziswa ukugaya kwezindlela zokugaya, ngakho-ke ukuthola kubo ngokuqala kususa ixesha nezemali kumadoti.

I-Ray-X futhi Ukubhalwa Kwe-Khompuyutha Ngokuthola Nezilinganiso Zomkhondo

Ukubhalwa ngodidi lwedijithali ngexesha elincane lokuhlola umkhondo nokulinganisa usayizi

Ukumiswa kwe-X-ray kuditali kumisebenza ukulahlekelwa kwezikhala zingaphandle kwezinto ze-diamond eziqhamukayo ngendlela enkulu ngokushesha. Lo ndlela kusenza izithombe ezimbili zibonisa izindawo eziphazanywayo, okusho ukuthi kungakhona amakhala. Ababhili bengaphakade bathola ukuthi lo ndlela isebenzisa kahle ekuboneni izimo ezinkulu kunoma-50 micrometers futhi abalindele konke lokhu kuhlaziywa kwizigaba ezahlukene ngaphakathi kweminithi embalwa. Ngakho ke amakhanda aningi ayisebenzisa kuqala xa esheshayo ubunzima bezinhlelo. Kodwa kukhona into eyodwa engcono kufanele ithathwe ngokwengezi. Ngoba ukumiswa kwe-digital radiography akusinika imininingwane engaphezu kwebude, amakhala amancane apholile phansi kwezinye izinto azikwazi ukubonwa. Lokhu kungaba yinkinga ngokuphambene xa kusekelwa kwi-geometries eziningi lapho izinhlelo ziphenduka kusithombe.

Micro-CT yokulahlekelwa kwezikhala ngokwe-3D, ukulinganisa kwegugu leporosity, nokuchazwa kwe-morphology

Ukubalwa okuqukethwe kwe-3D kwezinhlayiya zangaphakathi ngumphatha wokubalwa kabusha (micro-CT) ukusebenzisa izithombe ezingu-2D ezingu-1000. Lendlela ikuvumela:

• Ukulinganiswa okwaziqinisekile kwegiphepha ngokuphelele ku-0.1%
• Ukuhlolwa okudadolo kwebutho, ubuso, nesayizi yezindawo ezingenanto
• Ukubhalwa kwezindawo eziphazanyayo emva kwemigqa ephathelene ngezinye izindawo ezibalulekile
  Ngaphandle kwezindlela ezibonakala ngokungu-2D, i-micro-CT ikhombisa izindawo ezingenanto emva kwamagunya athintekayo futhi ibalise isimo sabo ngokulunga kwebumbindo. Ngokuba igcina ikufinyelela ku-500 nm, ikuvumela ukuqhathaniswa ngqo phakathi kwebutho nezindlela zokugayaya nokugayayeka okubonakalayo.

Ukukhetha Indlela Eyangakiyo Yokuthola Izindawo Ezingenanto: Amathuluzi Amanyebo Kumaqhina

Ukukhetha indlela eyiyo yokuthola izikhumba kuyaphela kakhulu ekubonakaleni konke okudingekayo ngokulinganayo nokusheshayo kokuthola imibuzo. Ukusebenzisa i-Micro CT ikhona kakhulu uma kudingeka ukubuka ku-3D okujwayelekile kwezikhumba noma ukubala ubude bezikhumba ezincane kune-5 microns. Ubuncane bomfanekiso obungeziwa ngu-0.1 kuze kube ngu-1 micron buveza izinhlayiya zomthelela angazange abanye abasebenzi bafundeni, futhi abazimemele abaningi bavamile ukufumana izici ezingatholakali kakhulu ematerials ethinta kakhulu ngemoto ye-92%. Uma isivinini siyisidingo esikhiphayo kulokho okunjalo, i-digital radiography ichazene nezikhumba ezinkulu kune-30 microns ngamashesho angaphezu kwezingu-15 kuze kube ngu-30 kunge Micro CT, nakuba ayikwazi ukubonisa ngqo lapho izikhumba eziphakeme ezazingeni. Uma umdla phakathi kwezinhlayiya yisidingo esikhiphayo, scanning acoustic microscopy (SAM) inokubona izikhumba ezincane kakhulu eziningi kwe-1 micron ezinye izingxenye, ngelixa i-pulse echo ultrasonics ichaza izikhumba ezinkulu kune-50 microns kuyo yonke indawo. Sicophelela ukuthi kumele ujongane imbonakalo ngendlela eyodwa, njengekuhambisana kwezimpendulo ze-SAM nezomfanekiso we-micro CT, ukuze ungahlale ngaphandle kokuthola okubalulekile. Ungahlanjululi na nezinto ezifanelekileyo - izindleko zezixhobo ziyahlukenye kakhulu, izinye izindlela zisebenza kahle kakhulu kumazimemele amancane kunazo onke, futhi chaza ukuthi i-metallography yangempela iyenzelani ukuvikela iqhobosha lezenzo.