Lapho abantu abaningi bezwa 'ukukhiqizwa kwe-powder metallurgy', ngokushesha babona umsebenzi olula wokucindezelwa kanye no-sinter—hlanganisa impushana, iyicindezele ibe yisimo, bese uyibhaka. Leso yisifundo se-101, kodwa iqiniso esitolo, ikakhulukazi uma uhlanganisa lezi zingxenye kuma-assemblies amakhulu noma izinhlelo zokusebenza ezifunayo, isilwane esihlukile. Akukhona nje ukwenza umumo; kumayelana nokuphatha ama-gradients okuminyana, ukuqonda ukuthi izakhi ze-alloying ziziphatha kanjani ngendlela eyimpushana uma kuqhathaniswa nokuncibilika, kanye nokubhekana namaqiniso angemuva kwe-sintering okulawula ubukhulu. Amaklayenti amaningi eza kithi ngo I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) ukucabanga PM kuyinto eshibhile yokufaka esikhundleni sengxenye eyenziwe ngomshini noma ephonswe, futhi yilapho isethi yokuqala yekhanda elibuhlungu liqala khona.
I-Material Mindset: Akuyona Nje Insimbi Eyimpushana
Olunye ushintsho olukhulu ekucabangeni yizinto ngokwazo. Ukusebenza nge insimbi engagqwali noma ama-alloys asekelwe ku-nickel emigqeni yethu yokutshala imali kanye nemishini ye-CNC ikunikeza umuzwa othile mayelana nokugeleza, ukuncipha, nokuguga kwamathuluzi. Ngempushana, lowo mbono uyaphenduka. Ukusatshalaliswa kosayizi wezinhlayiyana, umumo (i-spherical vs. irregular), kanye ne-lubricant exutshwe phakathi-konke kunquma ukugeleza ku-dies namandla okugcina aluhlaza. Sithole izimpushana ebezibukeka ziphelele eshidini lokucaciswa kodwa zenqaba ukugeleza njalo, okubangela izinkinga zokugcwalisa kumathuluzi ayinkimbinkimbi. Ufunda ukucela idatha yangempela yokuhlola izinga lokugeleza, hhayi nje isitifiketi.
Bese kuba khona i-alloying. Ekuncibilikeni, uthola ingxube ye-homogeneous. Ku ukukhiqizwa kwe-powder metallurgy, uvamise ukusebenza ngezimpushana ezifakwe ngaphambilini noma ezihlanganiswe ngokusabalalisa. Iphrofayili ye-sintering ukufeza i-homogenization efanele ngaphandle kokuhlanekezela ingxenye ukuhamba ngentambo eqinile. Okwengxenye egqoke kakhulu esenze i-prototype sisebenzisa i-cobalt-based alloy powder, umjikelezo ojwayelekile we-sintering uholele ekukhuleni okusanhlamvu okudlulele kwezinye izigaba, okubulala ukumelana nokuguga. Kwadingeka sibuyele emuva futhi sisebenze nomphakeli wempushana ukuze silungise iphrofayili yezinga lokushisa lesikhathi, sengeze isigaba sokupholisa esisheshayo se-post-sinter. Yilezi zimpi zezandla ezisetshenziswa yizincwadi zokufunda.
Nokungcola—umbulali othule. Inani elincane lezinto zangaphandle noma i-oxidation ngesikhathi sokuphatha lingadala izindawo ezibuthakathaka. Ukuzizwisa kwethu ezinqubweni eziseduze kwegumbi elihlanzekile zokutshala izimali kusenze sadideka ngalokhu kusenesikhathi. Sasebenzisa iziteshi zokuphatha impushana ezizinikele, ezibonakala sengathi zidlula ngokweqile kwaze kwaba yilapho silandelela iqoqo lezingxenye ezinobunzima obungahambelani sibuyela esitsheni esixubile esingcolile. I ukukhiqizwa kwe-powder metallurgy kuningi mayelana nempahla nokugcinwa kwendlu njengoba kumayelana nabezindaba.
I-Tooling Tango: Lapho Ithiyori ihlangana khona ne-Wear
I-Tooling yilapho izindleko nobunkimbinkimbi bucasha khona. Wonke umuntu ugxile ku-tonnage yokunyathelisa, kodwa idizayini ye-die, ukubekezelela i-punch, kanye nokukhethwa kwezinto zamathuluzi ngokwazo yikhona okwenza noma kunqamule ukukhiqizwa kokukhiqiza. Sidizayina futhi sikhiqize amathuluzi angaphakathi endlini olayini bethu bokusakaza nokukhiqiza, ngakho-ke sasebenzisa lowo mcabango ku-PM. Iphutha elikhulu ekuqaleni. Ukuqina kwezimpushana zensimbi, ikakhulukazi ama-alloys aqinile, kuhlafuna izinsimbi zamathuluzi ajwayelekile ngokushesha kunokusika insimbi CNC imishini ukusebenza.
Safunda kanzima ngomsebenzi osunesikhathi eside wengxenye yensimbi. Izinduku eziyinhloko, ezenziwe ngensimbi evamile ye-H13, zaqala ukubonisa ukuguga ngemva kwemijikelezo ye-20,000, okuholela ekwandeni kancane kancane kwengxenye yobubanzi-isigwebo sokufa sokubekezelela. Kwadingeka ukuthi sime, siklame kabusha ngokufaka i-carbide ezindaweni ezibucayi, futhi sidle isikhathi sokuphumula. Manje, ukukhetha izinto zamathuluzi kuyiphuzu eliyinhloko lengxoxo yanoma iyiphi iphrojekthi entsha ye-PM. Akuyona insiza; kuyinto esebenzisekayo enomugqa oqondile engxenyeni yakho yekhwalithi kanye nezindleko zengxenye ngayinye.
Enye i-nuance yethuluzi i-ejection. Ukuthola ingxenye eluhlaza ebuthakathaka efashini eliyinkimbinkimbi ngaphandle kokuqhekeka noma i-laminating kuwubuciko. Inani le-springback ngemuva kokuhlangana liyahlukahluka ngokuminyana kanye ne-alloy. Sibe nezingxenye ezicindezelwe kahle kodwa zaphuka ekukhishweni ngoba i-die taper ibingalungile kuleyo ngxube yempushana ethile. Uthuthukisa umuzwa wakho-ngezinye izikhathi ukwengeza idigri enguhhafu yokusalungiswa noma indawo ehluke kancane odongeni lokufa kwenza umehluko. Lena akuyona isofthiwe ongayilingisa kahle; ukuhlola, iphutha, kanye nokubhekwa phansi kwabezindaba.
I-Sintering: Ibhokisi Elimnyama Elingekho
I-Sintering ivame ukuphathwa njengesinyathelo sebhokisi elimnyama-izingxenye zokulayisha, umjikelezo wokugijima, ukukhulula. Eqinisweni, yinhliziyo yenqubo, lapho izinhlayiya zempushana zishisela ndawonye futhi izakhiwo zokugcina zizalwa. Umkhathi wesithando somlilo uyikho konke. Amandla ekhabhoni asuswe kancane kugesi e-endothermic angakwazi ukungcwaba ingxenye yensimbi, bonakalise ubulukhuni bayo. Sisebenzisa kakhulu amafurnace we-vacuum noma ahlanzekile kakhulu emsebenzini wethu we-alloy ephezulu, okwengeza izindleko kodwa ukulawula.
Ukufana kwezinga lokushisa kungenye isilwane. Indawo eshisayo engu-10-15°C esithandweni esikhulu ingabangela ukushwabana okuhlukile, kusonteke izingxenye. Sake saba nenqwaba insimbi ama-flange aphuma ngomnsalo obonakalayo. Ukuyilandela phansi kusiholele entweni yokushisisa ehlulekayo edala ukuthambekela kokushisa okucashile. Manje, ukuhlola okujwayelekile kwesithando somlilo nabashadikazi abashisayo akuxoxiswana. Kuyinto yesondlo ethinta ngokuqondile isivuno.
Futhi izinga lokupholisa—akukona nje ukucisha. Kwezinye izinsimbi ezingenasici ze-martensitic, izinga lokupholisa kusuka kuzinga lokushisa elishisayo linquma ubulukhuni obufakwe njenge-sintered. Ihamba kancane kakhulu, futhi ubambeke engxenyeni ethambile edinga ukwelashwa kokushisa kwesibili, okwengeza izindleko nobungozi bokuphazamiseka. Ukuthola iphrofayili yokupholisa khona kanye esithandweni ngokwako kuwukwengeza inani elikhulu. Lapha yilapho amashumi eminyaka esipiliyoni senqubo ye-thermal kusuka kwethu ukubunjwa kwegobolondo kanye nemisebenzi yokwelapha ukushisa kwaphambana nempova ngokuqondile ekuthuthukiseni umkhuba wethu wokwenza i-PM sintering.
Ngemuva Kokucubungula: Ububi Obudingekayo
Akuvamile ukuthi ingxenye ye-PM iphume ebhandeni le-sintering ilungele ukuthunyelwa. Iningi lidinga uhlobo oluthile lokucutshungulwa kwangemuva. Yilapho ikhono lethu eliyinhloko likhona CNC imishini iba bucayi. Ukucupha ingxenye ye-sintered kuhlukile. Inezimbotshana, okungaba kuhle kakhulu ekubambeni uwoyela kodwa kubi empilweni yamathuluzi okusika—iyaqhuma. Awukwazi ukusebenzisa okuphakelayo okufanayo kanye nesivinini njengomsebenzi owenziwe. Simoshe izinto eziningi ezifakiwe ngaphambi kokudayela kumapharamitha alungile, ngokuvamile sikhetha i-CBN noma amathuluzi ambozwe ngedayimane ukuze asebenze isikhathi eside ezintweni ezinsimbi.
Imisebenzi yesibili efana nokulinganisa (ukwenza imali) noma ukwelapha ngesitimu kuvamile. Ukwelapha ngesitimu ukuze kufakwe i-oxidation engaphezulu kanye nokuvala izingxenye ezisekelwe ensimbi kuyisibonelo sakudala. Ithuthukisa ukumelana nokugqwala kanye nokuqina kokucindezela, kodwa futhi ishintsha ubukhulu kancane futhi yengeze ungqimba lwangaphezulu oluphukayo. Uma ingxenye idinga imishini elandelayo, kufanele ukwenze ngaphambi kokwelashwa kwe-steam. Kudingeke ukuthi siphinde silandelele imisebenzi izikhathi ezimbalwa ngemva kokuthola ukubekezelelana okugejiwe okungeke kufinyelelwe ngemuva komusi. Kukuphoqa ukuthi ucabange ngalo lonke uchungechunge lwenqubo kusukela kumdwebo wokuqala.
Impregnation ingenye enye. Ezingxenyeni eziqukethe ingcindezi, ngokuvamile udinga ukumilisa nge-resin noma i-polymer ukuze uvale i-porosity exhunyiwe. Ubuqili ukuthola ukungena okuphelele ngaphandle kokushiya izinsalela ezingcolile ezindaweni ezibucayi. Sisebenze ngezindlela ezihlukene zokumilisa—i-vacuum, ingcindezi, idiphu—futhi sathola ukuthi ukuminyana kwengxenye kanye nokwakheka kwezimbotshana, okunqunyiwe emuva kakhulu esigabeni sokucindezela, kuyasho ukuthi iyiphi indlela ezosebenza. Kuwuchungechunge lokuncika okwenza i ukukhiqizwa kwe-powder metallurgy isiyalo sobunjiniyela esididiyelwe ngempela.
Ukuhlanganiswa kanye Nokuhlolwa Komhlaba Wangempela
Ubufakazi bokugcina buhlala busemhlanganweni noma ekusetshenzisweni. Igiya le-PM lingase livivinye lilodwa ngokuphelele kodwa lehluleke ngaphansi komthwalo wokudlulisela ngenxa yengcindezi eyinsalela noma ukuhluka okucashile kokuminyana emsukeni. Umsebenzi wethu kwa-QSY uvamise ukubandakanya ukuhlinzeka hhayi nje ngengxenye ye-PM, kodwa nezindlu zomshini noma ingxenye yabalingisi ehlangana nayo. Lokhu kuqonda okuqondile kubaluleke kakhulu. Sibambe izinkinga zokuphazamiseka esigabeni sokuklama ngoba sikwazi ukubona ngeso lengqondo ukuthi ingxenye ye-sintered, nebhendi yayo yokubekezelela ehluke kancane, ingangena kanjani embuthanweni wabalingisi esiwukhiqizayo.
Icala elilodwa lalihilela isihlalo se-valve esiyinkimbinkimbi esenziwe nge-PM nge-alloy ekhethekile. Isebenze kahle ekuhlolweni kwelebhu kodwa yehluleka ngaphambi kwesikhathi ensimini. Ukuhlaziywa kokwehluleka kukhomba ukuguga okukhathazayo ngokumelene nomzimba wensimbi engagqwali. Isixazululo besingelona ukushintsha ingxenye ye-PM, kodwa ukucacisa indawo ehlukile eqediwe engxenyeni yabalingisi bokukhwelana ebesiyenza endlini. Ukuba nokulawula izinqubo eziningi zokukhiqiza ngaphansi kophahla olulodwa at https://www.tsingtaocnc.com ivumela lezi zixazululo eziphelele isitolo se-PM esizimele esingase sibe nzima ukuzibona.
Ngakho, uma ngicabanga mayelana ukukhiqizwa kwe-powder metallurgy, akuwona nje umshini wokunyathelisa. Kuyi-symphony yesayensi yempushana, ubuciko bokuthululela amathuluzi, ukuphatha okushisayo, nokuqedwa kwenqubo yangemva kwenqubo, konke okuhlanganiswe ukuqonda okujulile kokuthi izinto ezisetshenziswayo ziziphatha kanjani. Iyithuluzi elinamandla, kodwa elidinga ukuhlonishwa ngama-nuances alo. Umgomo awukona ukwenza ingxenye eshibhile; ukwenza ingxenye esebenza ngendlela enokwethenjelwa esebenza emhlabeni wangempela, ngokuvamile njengengxenye yesistimu enkulu esiza ukuyiphilisa.
