Ha baenjiniere ba hlakisa likarolo tsa machining tsa cobalt alloy bakeng sa lipompo tsa hydraulic, li-valve tsa downhole, kapa li-winch shafts tse phahameng, ha ba ikhethele thepa feela - ba ntse ba becha ka botsitso ba dimensional tlas'a khatello ea 300 MPa, ho hanyetsa halling ho 650 ° C, le microstructural consistency ho pholletsa le likarolo tse 500. Ke kahoo ho batla motho ea ka tšeptjoang fektheri ea likarolo tsa mochini oa cobalt alloy ha se hangata e qetellang ka litheolelo tsa theko. E qala ka boikarabello ba metallurgical, taolo ea ts'ebetso ea li-multi-axis, le ho mamellana le zero bakeng sa karohano ea carbide ho AMS 5387 kapa T800-grade castings.
Hobaneng ha li-alloys tsa cobalt li hloka ho feta bokhoni bo tloaelehileng ba CNC
Li-superalloys tse thehiloeng ho cobalt joalo ka Stellite 6B, Haynes 188, le li-formulation tsa T800 tse nang le thepa li hana ho senyeha le ho bola — empa li boetse li sila lisebelisoa ka lebelo la 3–5× ho feta tšepe e sa hloekang. Re bone mabenkele a qotsa matsoho a nozzle ea cobalt feela hore a lahle karolo ea 40% ea likarolo tsa pele ka lebaka la ho tsieleha ha bokaholimo bo bakoang ke moqoqo holim'a metsi a ka hare. Motso oa sesosa? Litlhophiso tse thata tsa lisebelisoa tse iphapanyetsang ho se lumellane ha katoloso ea mocheso lipakeng tsa cobalt (10.4 µm/m·K) le lipoleiti tsa aluminium. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., mosebetsi o mong le o mong oa cobalt o qala ka 'mapa oa matšeliso a mocheso-o netefalitsoeng ke ho hlahlojoa ha infrared nakong ea ho feta. Ke kamoo re tšoarang ± 0.008 mm ho pota-pota ka li-plug tsa cobalt alloy tsa 120-mm-diameter ha re ntse re boloka Ra ≤0.4 µm holim'a ho tiisa.
Matla a mane a ke keng a buisanoa a fektheri ea 'nete ea cobalt alloy machining
Setsi se batlang tsebo ea cobalt se tlameha ho fana ka lebelo le fetang la ho itšeha. Ho ipapisitsoe le lilemo tse 12 tsa tlhahiso ea karolo ea pompo-system, matla ana a mane a arola balekane ba netefalitsoeng ho barekisi ba nang le tšepo:
- Traceability ea lintho tse bonahalang ho fihlela palo ea mocheso- eseng feela li-cert tsa leloala. Ts'ebetso ea Cobalt e ipapisitse le litaba tsa khabone le tungsten; Phapang ea khabone ea 0.02% ho AMS 5387 e fetola ho thatafala ho tloha ho 42 HRC ho ea ho 49 HRC, ho beha kotsi ea ho robeha ha brittle ka ho kenya cyclic.
- Ts'ebetso e kopaneng ea ho lahla-ho-machining- ha ho na li-handoffs pakeng tsa setsi sa motheo le lebenkele la mochini. Matlo a matsete a cobalt a fokotseha ka mokhoa o sa lebelloang ntle le haeba lisebelisoa tsa machining li bua ka likarolo tsa datum. Re kenya li-cylinder housings nakong ea lihora tse 72 tsa ho sisinyeha, re sebelisa CMM e netefalitseng geometry ea ho lahla.
- Ho lumellana ha phekolo ea mocheso- tharollo ea annealing e tlameha ho etella pele machining a ho qetela ho imolla khatello ea maikutlo e setseng. Empa ho fetelletsa ho feta ho fokotsa chromium carbides, ho beha kotsing ea ho hanyetsa kutu. Li-logs tsa rona tsa sebōpi li fetisetsoa ka nomoro ea serial ea karolo ka 'ngoe 'me li hokahane le litlaleho tsa CMM tsa ka mor'a mocheso.
- Netefatso ea GD&T pele u khaola- Haholo-holo bakeng sa mamello ea boemo ba cobalt nozzles. Pitso ea profil ea 0.05 mm setulong sa conical ha e fihlellehe ka mabili a tloaelehileng a ho qetela. Re etsisa ho kheloha tsela ea lithulusi ho VERICUT, ebe re netefatsa ka li-scanner tsa optical contour — eseng feela li-CMM.
Moo bafani ba thepa ba tloaelehileng ba hlōlehang—le hore na lifeme tse tsepamisitsoeng ka nepo li arabela joang
Baetsi ba bang ba tšoara cobalt joalo ka tšepe e thata: li-feed tse tšoanang, pholiso e tšoanang, khafetsa ea tlhahlobo. Seo se hloleha hobane conductivity e tlase ea mocheso oa cobalt e ts'oara mocheso pheletsong. Re bone likarolo tse 6 tsa pompo ea cobalt ea pompo e hlolehang ho etsa tlhahlobo ea setlolo sa letsoai ka mor'a lihora tse 200 - eseng ka bofokoli ba lintho tse bonahalang, empa ho tloha mapetsong a manyane a bakoang ke khatello e sa lokelang ea likhohola (e fetang 12 bar ho li-drill tse ka hare tsa 3-mm-diameter). Tharollo ea rona? Minimum quantity lubrication (MQL) e nang le oli e thehiloeng ho ester, e fanoang ka 80 psi ka li-nozzles tsa spindle, tse hokahaneng le spindle RPM. Botšepehi bo holimo bo ntlafetse 70%, 'me bophelo ba lisebelisoa bo imenne habeli.
Lekhalo le leng le tloaelehileng: tlhahlobo ea ts'ebetso. Plug ea cobalt ha e "etsoe" ha litekanyo li feta. E tlameha ho tiisa 414 bar ha e ntse e potoloha ka 120 rpm khahlano le litulo tse thata tse 420 tse se nang litšila. Re leka ntho e 'ngoe le e 'ngoe ho li-hydraulic rigs tse entsoeng ka tloaelo tse etsisang torque ea sebele ea tšebeletso, mocheso le khatello ea maikutlo - data e kentsoeng le ho arolelanoa le bareki.
Ho khetha feme ea likarolo tsa mochini oa cobalt alloy: lethathamo la liketso
Pele u romela litšoantšo, botsa lipotso tsena tse hlano-'me u hloke likarabo tse ngotsoeng:
- A na u ka fana ka lirekoto tsa potoloho ea kalafo ea mocheso bakeng sa lotho tse tharo tsa ho qetela tsa AMS 5387 tse rometsoeng?
- Bolelele ba hau bo boholo bo sa ts'ehetsoeng bakeng sa bores ba ka hare ba 8-mm-diameter cobalt - mme ke sistimi efe ea lisebelisoa e e fihlelang?
- Na u etsa tlhahlobo ea ultrasonic ea post-machining likarolong tsa bohlokoa tse botenya ho feta 25 mm?
- U netefatsa joang botšepehi ba holim'a litulo tse entsoeng ka mochine oa cobalt? (Likarabo tse amohelehang: tekanyo e tšoeu-etch layer, 'mapa oa microhardness gradient, kapa SEM fractography-eseng feela ho bala Ra.)
- A na u ka tšoara boemo ba 'nete ba ± 0.015 mm ho li-diameter tse tharo tsa coaxial ka setupong se le seng bakeng sa rolara ea 180-mm-long cobalt center shaft?
Haeba karabo leha e le efe e sa hlaka, e liehile, kapa litšupiso "mekhoa e tloaelehileng," tsoela pele ho sheba. Cobalt ha e tšoarele maikutlo.
Ntlha ea ho qetela: ho nepahala ha se lefapha-ke tatellano
Likarolo tse matla ka ho fetesisa tsa cobalt li hlaha ho hokahaneng ho tiileng lipakeng tsa mahlale a lintho tse bonahalang, fisiks ea machining, le netefatso ea ts'ebetso. Ho QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., hoo ho bolela hore litsebi tsa k'hemistri li lokisa litaba tsa vanadium ho ipapisitsoe le boima ba mochini oa beke e tlang, baetsi ba mananeo a CNC ba lokisa litefiso ho latela li-sensor tsa nako ea 'nete,' me baenjiniere ba boleng ba hana karolo e fetang licheke tsohle tsa GD&T haeba boemo ba eona bo setseng ba khatello ea MP0 bo oela kantle ho -520. Tatelano eo—sesebediswa → tshebetso → tekanyo → tshebetso—ke ka lebaka leo baenjiniere ba khutlang bakeng sa tšebelisano-’moho ea fektheri ea motsoako oa cobalt selemo le selemo. Ho nepahala ha ho lekanyetsoe ka li-microns feela. E lekantsoe ka kholiseho.
