I-Laser cladding wuhlobo olusha lobuchwepheshe bokuhlanganisa. Iwubuchwepheshe bobuchwepheshe obuphezulu obufaka ukukhanya, umakhenikha, ugesi, izinto zokwakha, ukubona, nokulawula. Kuwubuchwepheshe obubalulekile obusekela ubuchwepheshe obuthuthukisiwe bokukhiqiza i-laser futhi bungakwazi ukuxazulula izinkinga izindlela zokukhiqiza zendabuko ezingakwazi ukuziqeda. Kuwubuchwepheshe obusezingeni eliphezulu obusekelwa futhi bukhuthazwe nguhulumeni. Njengamanje, ubuchwepheshe be-laser cladding sebungenye yezindlela ezibalulekile zokulungiswa kwezinto ezintsha, ukukhiqizwa okusheshayo nokuqondile kwezingxenye zensimbi, nokukhiqizwa kabusha okuluhlaza kwezingxenye zensimbi ezihlulekile. Isetshenziswe kabanzi kwezokundiza, uphethiloli, izimoto, ukukhiqizwa kwemishini, ukwakhiwa kwemikhumbi, kanye nokukhiqiza isikhunta. nezinye izimboni. Ukuze kugqugquzelwe ukwenziwa kwezimboni kobuchwepheshe be-laser cladding, abacwaningi abavela kuwo wonke umhlaba benze ucwaningo oluhlelekile ngobuchwepheshe obubalulekile obuhilelekile ekuhlanganisweni kwe-laser futhi benze inqubekelaphambili ebonakalayo. Kunenani elikhulu locwaningo, amaphepha engqungquthela, namalungelo obunikazi ekhaya naphesheya elethula ubuchwepheshe be-laser cladding kanye nezinhlelo zokusebenza ezintsha: okuhlanganisa imishini yokuvala i-laser, izinto zokwakha, izinqubo, ukuqapha nokulawula, ukuhlolwa kwekhwalithi, ukulingisa inqubo kanye nokulingisa, njll. Kodwa. kuze kube manje, ubuchwepheshe be-laser cladding abukwazi ukusetshenziswa ezimbonini ngezinga elikhulu. Ukuhlaziya izizathu, kunezici ezifana nezici ezigxile kuhulumeni, imikhawulo ekuvuthweni kobuchwepheshe bokucwenga nge-laser uqobo, kanye nezinga lokuqashelwa kobuchwepheshe be-laser yizo zonke izinhlaka zomphakathi. Ngakho-ke, ukuze kuzuzwe ukusetshenziswa okuphelele kwezimboni kobuchwepheshe be-laser cladding, kufanele sikhulise ukukhangisa, siqondiswe isidingo semakethe, sigxile ekwephuleni izici ezibalulekile ezikhawulela intuthuko, futhi sixazulule ubuchwepheshe obubalulekile obuhilelekile ekusetshenzisweni kobunjiniyela. Ngikholelwa ukuthi esikhathini esizayo esiseduze, Izinkambu zokufaka isicelo kanye nokuqina kobuchwepheshe be-laser cladding kuzoqhubeka nokukhula.

Nazi izibonelo ezimbalwa zohlelo lokusebenza lwe-laser cladding: ukuminyana kwamandla okugxilile we-laser beam kungafinyelela ku-1010~12W/cm2, futhi izinga lokupholisa lezinto ezibonakalayo lingaba phezulu njengo-1012K/s. Lesi sici esibanzi asihlinzeki nje kuphela ngamathuba okukhula kwemikhakha emisha kwisayensi yezinto. Inikeza isisekelo esiqinile kanye nethuluzi elingakaze libonwe lokwenziwa kwezinto ezintsha noma izindawo zokusebenza ezintsha. Ukuncibilika okudalwe yi-laser cladding kukude kakhulu nesimo sokulinganisa sezimo zokupholisa ngokushesha ngaphansi kwezinga lokushisa eliphezulu, okuholela ekwakhekeni kwenani elikhulu lezixazululo eziqinile ezigcwele i-supersaturated, izigaba ezimetastable, ngisho nezigaba ezintsha esakhiweni sokuqiniswa, kuqinisekiswe inani elikhulu lezifundo. Ihlinzeka ngezimo ezintsha ze-thermodynamic kanye ne-kinetic zokwenziwa kwezendlalelo eziyinhlanganisela ezisebenza ngokwezinga lezinhlayiyana ze-autogenous ze-in-situ. Ngesikhathi esifanayo, ukulungiswa kwezinto ezintsha ngobuchwepheshe be-laser cladding kuyisisekelo esibalulekile sokulungiswa nokukhiqizwa kabusha kwezingxenye ezihlulekile ngaphansi kwezimo ezimbi kakhulu kanye nokukhiqizwa okuqondile kwezingxenye zensimbi. Ithole ukunakwa okukhulu kanye nocwaningo olunezici eziningi ezivela emphakathini wesayensi namabhizinisi emhlabeni jikelele. Njengamanje, ubuchwepheshe be-laser cladding bungasetshenziselwa ukulungisa i-iron-based, i-nickel-based, i-cobalt-based, i-aluminium-based, i-titanium-based, i-magnesium-based, nezinye izinto ezihlanganisiwe ze-matrix yensimbi. Ihlukaniswe ngokusebenza: izambatho ezinemisebenzi eyodwa noma eziningi zingalungiswa, njengokumelana nokugqoka, ukumelana nokugqwala, ukumelana nokushisa okuphezulu, njll, kanye nezingubo ezikhethekile zokusebenza. Ngokombono wesistimu yezinto ezibonakalayo ehlanganisa ukumboza, ithuthukiswe kusuka ohlelweni lwe-alloy kanambambili kuya ohlelweni lwezingxenye eziningi. Idizayini yokwakheka kwe-alloy nokusebenza okuningi kwezinhlelo zezingxenye eziningi kuyizikhombisi-ndlela ezibalulekile zokuthuthukiswa zokulungiswa kwezinto ezintsha ngokufakwa kwe-laser esikhathini esizayo. Ucwaningo olusha lubonisa ukuthi izinto zensimbi ezenzelwe insimbi zibusa izicelo zobunjiniyela bezwe lami. Ngesikhathi esifanayo, ukwehluleka kwezinto zensimbi (njengokugqwala, ukuguga, ukukhathala, njll.) kwenzeka kakhulu endaweni yokusebenza yezingxenye, futhi ingaphezulu lidinga ukuqiniswa. Ukuze kuhlangatshezwane nezimo zesevisi ye-workpiece, ukusebenzisa izingcezu ezinkulu ze-in-situ ezizikhiqizela yona izinhlayiyana ezisekelwe ezintweni eziyinhlanganisela yensimbi akumoshi nje kuphela kodwa futhi kubiza kakhulu. Ngakolunye uhlangothi, lapho uhlola ama-biomaterials emvelo ngokombono we-bionics, ukwakheka kwawo kuminyene ngaphandle futhi kuncane ngaphakathi, futhi izakhiwo zabo ziqinile ngaphandle futhi ziqinile ngaphakathi. Ngaphezu kwalokho, ukuminyana-okuncane, ukuqina kokuqina kushintsha ku-gradient kusuka ngaphandle kuya ngaphakathi. Izakhiwo zezinto eziphilayo zemvelo Isakhiwo esikhethekile senza kube nokusebenza okuhle kakhulu.

Ngokwezimo zesevisi ezikhethekile kanye nezidingo zokusebenza kwezinto zobunjiniyela, kunesidingo esiphuthumayo sokwakha izinto eziyinhlanganisela yensimbi engaphezulu enezinhlanganisela eziqinile neziqinile nokusebenza kwegradient. Ngakho-ke, ukusebenzisa i-laser cladding ukuze kulungiswe izinhlanganisela ze-matrix zensimbi ezizikhiqizela izinhlayiyana ezizikhiqizela izinhlayiyana eziqiniswe ngensimbi eziboshelwe engxenyeni engaphansi akusona nje isidingo esiphuthumayo sokwenza ubunjiniyela kodwa futhi kuwumkhuba ongenakugwenywa ekuthuthukisweni kobuchwepheshe bokulungiswa kwendawo ye-laser. . Ubuchwepheshe be-laser cladding kubikwe ukuthi bulungiselela izinhlanganisela ze-matrix zensimbi eziqiniswe yizinhlayiyana ezi-in-situ kanye nezinto ezisebenza ngokwezinga elisebenzayo, kodwa eziningi zazo zihlala esigabeni sokuhlaziywa kwesakhiwo nokuhlaziya ukusebenza, ukulawulwa kwemingcele yenqubo, usayizi, isikhala, kanye nesilinganiso sevolumu. isigaba sokuqinisa Ayikafinyeleli ezingeni elilawulekayo. Umsebenzi we-gradient wakhiwa nge-multi-layer coating, futhi kunenkinga nakanjani yokuhlangana okubuthakathaka kokusebenzelana phakathi kwezendlalelo. Luselude ukhalo okusamele luhanjwe ngaphambi kokusebenza. Ukusebenzisa ubuchwepheshe be-laser cladding ukuze kulungiswe izinto eziyinhlanganisela ebusweni ezisekelwe ensimbi ezinosayizi wezinhlayiyana ezilawulekayo, ubuningi, nokusabalalisa, amandla afaniswe ngokufanele nokuqina, nokuhlanganisa imisebenzi ye-gradient kanye nokuqiniswa kwezinhlayiyana ezikhiqizwa ngokwakho kuyi-in-situ isiqondiso esibalulekile sokuthuthukiswa esikhathini esizayo. Okuqukethwe kocwaningo kuhlanganisa:

1. Ubuchwepheshe, izindlela kanye nezimiso zokuhlanganisa izinto ezibonakalayo, ukwakheka nokwakheka kokusebenza kanye nobuchwepheshe bokulawula bokuqaliswa kwenqubo.
2. Ukusungulwa kwamamodeli we-thermodynamic kanye ne-kinetic emvula yesigaba sokuqinisa izinhlayiyana, ukukhula kanye nokuqina kwezinhlanganisela ze-matrix zensimbi eziqiniswe ngezinhlayiyana ezisebenza ngokwezigaba ezilungiselelwe ngokufakwa kwe-laser.
3. .I-Particle-reinforced phase morphology, isakhiwo, umsebenzi kanye nomklamo oyinhlanganisela yezinto eziphilayo kanye nobuchwepheshe bokulawula usayizi, ubuningi nokusabalalisa.
4. Ucwaningo ngezimiso, izinto ezibalulekile kanye nezindlela zenqubo zokuqanjwa kokumboza, ukwakheka nokulawulwa kwegradient yokusebenza.
5. Ukubuka, ukulawula kokuhlaziya, kanye nokuhlukaniswa kwezinhlamvu ezinkulu nezincane; ukuhlaziywa kanye nokutholwa kwezakhiwo ezivamile zezinhlanganisela ze-matrix yensimbi efakwe esigabeni esisebenzayo esenziwe ngezinhlayiyana ze-in-situ, kanye nokuziphatha okugqokile kanye nezindlela zokwehluleka ngaphansi kwezimo ezihlukene zokusebenza. Ukuphumelela kulokhu okuqukethwe kocwaningo kungase kuxazulule inkinga yokungafani ekusebenzisaneni phakathi kokumboza ne-substrate nokuthambekela ekuqhekekeni, futhi kukhuthaze ukunwetshwa kwenkundla yokusetshenziswa kobuchwepheshe be-laser cladding.