Xa usiva 'abavelisi besinyithi somgubo', iingqondo ezininzi zitsibela ngqo kumatshini wokucofa kunye ne-sinter wokwenza iigiya ezilula okanye amahlahla. Nantso indawo yokungena, ngokuqinisekileyo, kodwa kufana nokuthi umpheki wazi kuphela ukubilisa amanzi. Ubunzulu bokwenyani-kwaye apho iintloko kunye nokuphumelela kwenzeka-kwikhonkco elipheleleyo: ukusuka ekukhethweni kwe-alloy powder kunye neendlela eziphuculweyo zokudibanisa ezifana ne-metal injection molding (MIM) okanye i-isostatic ebandayo yokucinezela (CIP), ukuya kwimisebenzi ebalulekileyo yesibini. Uninzi lwemibuzo yokukhangela iphosile oku. Bafuna 'inxalenye yomgubo wesinyithi' kodwa abacacisi uxinaniso olufunekayo, ukunyamezelwa kwe-post-sintering, okanye nokuba ifuna unyango lobushushu okanye ukufakwa. Kulapho iiprojekthi zima okanye zingaphumeleli. Ndiyibone rhoqo.
I-Alloy Powder Maze
Iqala ngomgubo. Ayiyiyo yonke umgubo wentsimbi eyenziwe ngokulinganayo. I-atomized yamanzi xa ithelekiswa ne-gas-atomized ikunika iimilo ezahlukeneyo zamasuntswana kunye neempawu zokuhamba, ezichaphazela ngokuthe ngqo indlela umgubo ogcwalisa ngayo ukufa kunye namandla alo okugqibela aluhlaza. Kumalungu asebenza ngokuphezulu, njengalawo afuna ukumelana nokudinwa, ujonge umgubo osele udityanisiwe—izinto ezifana ne-Diffusion-bod Fe-Ni-Mo okanye awona manqaku angaqhelekanga entsimbi engenasici. Ukutsiba kweendleko kubalulekile, kwaye ayizizo zonke umenzi wesinyithi somgubo igcina uluhlu olubanzi. Basenokuba nesitokhwe esisemgangathweni we-F-0008 kodwa kufuneka baodole ngokukhethekileyo nantoni na eyenye, bongeza iiveki zokukhokela ixesha.
Emva koko kukho i-binder. Kwi-MIM, emnandi kwiijiyometri ezintsonkothileyo, ezincinci, inkqubo yokubopha sisiqingatha sedabi. Ukubophelela yinkqubo ecothayo, eethe-ethe; yikhawulezise kwaye ufumana iintanda okanye ukugqwetheka. Ndikhumbula iprojekthi yecandelo lesixhobo sotyando apho umxhasi wanyanzelisa umjikelo ondlongondlongo we-sintering ukonga ixesha. Isiphumo? Isiqulatho sekhabhoni besicimile, nto leyo eyakhokelela ekubeni ube brittleness. Kwafuneka sibuyele umva, silungise ukuqulunqwa kwe-binder, kwaye sicothe yonke into. Iresiphi yomgubo kukuzibophelela, hayi into oyitshintshayo ngokulula.
Apha kulapho ukuba neqabane elinamava abanzi ezinto eziphathekayo kuhlawulela khona. Inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), umzekelo, uvela kwimvelaphi enzulu ekukhupheni i-alloys ekhethekileyo. Olo lwazi lwe-metallurgical alupheli nje xa ujonga umgubo. Ukuqonda indlela i-nickel-based alloys eziphatha ngayo phantsi kobushushu, umzekelo, idluliselwe ngokuthe ngqo kwi-sintering kwifom yomgubo. Yazisa indlela yabo yokulawula umoya wesithando somlilo kunye namazinga okupholisa, enziwe okanye ikhefu kwiipropati zokugqibela.
Ukuxinana: Ayisosando nje esikhulu
Ukucinezela okuqhelekileyo bubugcisa bayo. Amacandelo amanqanaba amaninzi, ezo zineendonga ezincinci okanye utshintsho olubukhali kubukhulu, ziyaziwa ngokuhlukahluka kobuninzi. Ungahamba nayo ngenxa ye-spacer yoxinzelelo oluphantsi, kodwa kuyo nayiphi na into eyakhekileyo, loo mahluko yindawo ebuthathaka. Uyilo lwezixhobo apha luyinto yonke-ulandelelwano lweeputshi, inkqubo yokutya komgubo. Ulungile umenzi wesinyithi somgubo iya kuqhuba ukulinganisa kwimodeli yokuhamba komgubo kunye nokudibanisa ngaphambi kokusika isixhobo sokuqala. Ezi zitshiphu ziqikelela, kwaye uyayihlawula ngokungahambelani kwenxalenye.
Ukufumana iimilo ezinzima ngakumbi, uhamba ngaphaya kocinezelo. I-CIP (i-Cold Isostatic Pressing) isebenzisa uxinzelelo lwe-fluid kwi-compact powder kwi-flexible mold, inika ubuninzi obufanayo nakwiindawo ezibukeka njenge-pretzel. Urhwebo-off? Imilo yokuqala ayichanekanga kangako, ke ngoko uzibophelele kumatshini obanzi emva kokucoca. I-MIM, njengoko kukhankanyiwe, lelinye irhamncwa ngokupheleleyo. Kufana nokubumba inaliti yeplastiki kodwa ngomgubo wentsimbi uxhonywe kwisibophelelo. Isisombululo seenkcukacha siyamangalisa, kodwa ukucutha komda ngexesha le-sintering kukhulu kwaye kufuneka kuqikelelwe ngokuchaneka okugqithisileyo. Ukuhlolwa kwenqaku lakho lokuqala kuhlala kungumzuzu onzima.
Ndisebenze kunye nomxhasi kwi-sensor yendlu eneendlela zangaphakathi ze-helical. Ukuyicoca yayiliphupha elibi kwaye ukuphosa akukwazanga ukufikelela kumphezulu. I-MIM yayisisisombululo esigqibeleleyo. Senze umboniso ngezixhobo ezintathu ezahlukeneyo zokulwa i-warpage, kwaye isivuno sokugqibela sisabetha malunga nama-85% kwimveliso yokuqala. Asiyontonga yomlingo wemveliso eninzi; yinkqubo yexabiso eliphezulu, iindawo ezintsonkothileyo apho ixabiso-ngecandelo ngalinye lithethelela iinzame zophuhliso.
I-Make-or-Break: I-Sintering naNgaphandle kwayo
I-Sintering kulapho kwenzeka khona umlingo-kwaye apho iintlekele ezininzi zenzeka khona. Ayikokubhaka nje. Ngumjikelo wobushushu ochongwe ngononophelo kwiatmosfera ethile (i-hydrogen, initrogen, ivacuum, okanye umxube). Iprofayile yeqondo lobushushu, iireyithi zeerempu, amaxesha okufunxa, kunye nesantya sokupholisa zonke zilawula ulwakhiwo lokugqibela lwemicro, ukuxinana, kunye neempawu zoomatshini. I-miscalculation inokukhokelela kwi-blistering, i-sagging, okanye i-bonding eyaneleyo phakathi kwamaqhekeza.
I-Post-sintering, inxalenye kaninzi ayigqitywanga. Abaninzi bacinga ukuba inxalenye ye-sintered ikulungele ukuthunyelwa. Kumalungu achanekileyo, phantse asoze. Uhlala ufuna imisebenzi yesibini. Lo ngummandla obalulekileyo odibanayo. A umenzi wesinyithi somgubo oko kukwenza kuphela ukucofa kunye nokuntywila kunokukuthumelela inxalenye echwechwelwe ngobuchwephesha kodwa engasebenzisekiyo kuba ayinakubanjelwa ukwenziwa ngomatshini. Kungenxa yoko le nto imodeli kwi-QSY inomdla. Undoqo wabo ungaphakathi CNC Machining kunye nokuphosa utyalo-mali. Kubo, ukongeza isinyithi somgubo asikokwenza inxalenye eluhlaza; imalunga nokuzisa icandelo eligqityiweyo, elilungele ukuhlohla. Bangakwazi ukwenza imilo ekufutshane-umnatha kwaye basebenzise izakhono zabo zangaphakathi ze-CNC ukubetha ukunyamezela okuqinileyo kwiidayamitha ezibhobhozayo okanye iimpawu zentambo, into ecocekileyo-umdlalo we-PM ivenkile inokufuneka ikhuphe ngaphandle.
Ukunyangwa kobushushu, ukugquma komhlaba (njengonyango lomphunga lokumelana nokugqwala), okanye ukumiliselwa kwe-oyile yokuthambisa i-self-lubrication ngamanye amanyathelo aqhelekileyo esibini. Ngamnye wongeza iindleko kunye nexesha, kodwa ukutsiba ngokusekwe kwixabiso lokuqala luqoqosho lobuxoki lwakudala. Ndikhe ndawabona amaqela egiya engaphumeleli kuvavanyo lwentsimi kuba aye achazwa njenge-sintered xa efuna unyango lokuqina.
I-Material Crossovers kunye ne-Practical Synergies
Oku kufikelela kwindawo ebanzi malunga nobungcali ngokuchasene nokudibanisa. Indlu ye-PM yemveli yingcali. Kodwa kumthengi, ngakumbi osebenza ngeealloyi ezikhethekileyo, kukho ixabiso elikhulu kumenzi oqonda isinyithi kuzo zonke iinkqubo. Thatha i-cobalt-based okanye i-nickel-based alloys uluhlu lwe-QSY. Ezi zizixhobo ezomeleleyo, zihlala zinexabiso eliphezulu ezisetyenziswa kwindawo yobushushu obuphezulu okanye kwindawo enomhlwa. Ukuzenza ngomgubo wesinyithi kunokonga isixa esikhulu semathiriyeli xa kuthelekiswa nomatshini ovela kwisitokhwe sebha. Kodwa ukuziqhuba kunzima. Amava abo otyalo-mali bephosa ezi ngxubevange ezifanayo kuthetha ukuba sele beyazi indlela yokusingatha kwimeko enyibilikisiweyo okanye etyhidiweyo; ukuba intuition iguqulela ekulawuleni amaqondo obushushu sintering kunye nokuthintela ungcoliseko eziko.
Ikwachaphazela ulawulo lomgangatho. Basenokuba bajonge kwiintlobo ezifanayo zeziphene ezinokwenzeka: i-porosity, inclusions, ukungaqhelekanga kobungakanani bengqolowa. Iindlela zabo ze-NDT (uvavanyo olungonakalisi) zinokuphuhliswa ngakumbi kuba ukuphosa ngokuqhelekileyo kufuna oko. Olu lwazi lwenkqubo enqamlezileyo yi-asethi ebambekayo engayi kuba nayo ivenkile entsha, enenkqubo enye ye-PM.
Ukusuka kumbono wolawulo lweprojekthi, yenza izinto zibe lula. Endaweni yokulungelelanisa phakathi komthengisi we-PM, i-machinist, kunye nonyango lobushushu, unendawo enye yoqhagamshelwano elawula ukuhamba konke. Umngcipheko wokukhomba iminwe xa ukunyamezela kuphosakele emva komatshini kuyanyamalala. I-loop yengxelo phakathi kweqela eliculayo kunye neqela lomatshini lingoko nangoko kuba zikwisakhiwo esinye.
Ukufunyanwa okunenyani kunye neengcinga zokugqibela
Ke, xa uvavanya abavelisi besinyithi somgubo, musa ukucela incwadana enemifanekiso yobuchule. Buza malunga namabakala abo omgubo oqhelekileyo kunye nexesha labo lokukhokela kwizinto ezikhethekileyo. Cela ukubona imizekelo yamacandelo abawenzileyo afuna umatshini wesibini kunye nendlela abawalungisa ngayo. Buza malunga ne-atmospheres ye-sintering esemgangathweni kunye nokuchaneka kolawulo lobushushu. Buza ngeprojekthi engaphumelelanga kunye nokuba bafunde ntoni kuyo. Iimpendulo ziya kukuxelela ngakumbi kunoluhlu lweetoni zokushicilela.
Indawo ayimi ndawonye. Kukho usetyenziso olukhulayo lokwenziwa kwezongezelelo kunye nomgubo wentsimbi, nto leyo eneneni ingumgubo wesinyithi owenziwe ngelaser. Imigca imfiliba. Umenzi obambelele kwiminyaka yee-1990 ye-press-and-sinter mindset uya kusokola kunye nekamva elidibeneyo, elinexabiso eliphezulu.
Ekugqibeleni, yehla kule nto: i-powder metallurgy yindlela yokufikelela ekupheleni. Isiphelo siyinxalenye esebenzayo, ethembekileyo yentsimbi. Abavelisi ababalaseleyo baqonda lonke uhambo ukusuka kwipowder ukuya kwinxalenye egqityiweyo, kwaye banezakhono ezincedisayo-njenge CNC Machining kunye nobuchule be-alloy obubonwa kwi-firm efana ne-QSY-ukuqinisekisa ukuba uhambo luphela ngempumelelo. Yilaa mbono iphelele, ngaphezu kwaso nasiphi na isixhobo esinye, esahlula abo bakhuphisanayo kwiivenkile zemisebenzi esisiseko.
