Ukuvelisa i-powder yensimbi ephezulu yinqanaba lokuqala elibalulekileyo kuyo nayiphi na i-powder metallurgy factory-kwaye ikhonkco ebuthathaka kakhulu kwikhonkco inokuphazamisa yonke inkqubo ephantsi. E-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Senze ngaphezulu kwe-12,000 kg ye-cobalt-nickel kunye nomgubo wensimbi engenasici kwimizimba yevalvu yehydraulic, izindlu zempompo, kunye nemilomo ehambelana ne-AMS 5387 ukusukela ngo-2021. ukusilela kwiindawo ze-alloy T800; isiqulatho sokufuma esingaphezulu kwe-0.08% sibangele ukugoba komhlaba ngexesha loxinzelelo olushushu lwe-isostatic; kunye nokulandeleka kwebhetshi engangqinisiswanga kulibazise uphicotho lwabathengi abathathu. Imveliso yepowder yelizwe langempela ifuna ngaphezu kwezixhobo-ifuna uqeqesho lwe-metallurgical, iiprothokholi eziphindaphindiweyo, kunye nokunyamezela kwe-zero ukuguquguquka.
IAtomization: Apho iKhemistry idibana neKinematics
I-atomization yegesi ihlala iyindlela yethu yokuya kwi-cobalt-based alloys efana ne-T800 kunye ne-AMS 5387-ingakumbi xa uzinzo lwe-dimensional phantsi kwe-200 MPa imithwalo ye-hydraulic ayinakuxoxisana. Sisebenzisa initrogen kuxinzelelo lwe-7.2 MPa kunye ne-45 ° i-melt-stream impingement angle yokufezekisa i-D50 = 28–32 μm nge <5% oversize (>106 μm) amasuntswana. I-atomization yamanzi isebenzela umgubo wentsimbi yesakhiwo (umzekelo, i-SS316L yeziseko zempompo), kodwa emva kokuba i-post-atomization annealing engqongqo kwi-950 ° C kwi-hydrogen ukunciphisa umxholo we-oksijini ngaphantsi kwe-0.15 wt%. Okubaluleke kakhulu, asisoze sitsibe uvavanyo lwe-ultrasonic dispersion phambi kokuba sieving: ukuba amasuntswana aphinda aphinde ahlangane phakathi kwemizuzwana engama-90 kwi-isopropyl alcohol, siyayigatya iqashiso-nokuba uhlalutyo lwe-sieve ludlula. Kungenxa yokuba i-agglomerates yophuka ngokungalindelekanga ngexesha lokuxinana, idala i-gradients yoxinaniso eqalisa iintanda ezincinci ngexesha lokuntywila.
Inkqubo ye-Electrode yeRotary: Kuba xa ungenako ukufumana ii-Oxides
Kwimibhobho ye-cobalt-nickel esebenza ngaphezu kwe-650 ° C kwi-oyile kunye ne-gas downhole izixhobo, ukufakwa kwe-oxide kuyintlekele. Apha, ukusetyenzwa kwe-electrode ejikelezayo (REP) kuzisa into engakwaziyo ukwenza i-atomization yerhasi: kufutshane ne-zero ioksijini (<0.02 wt%), i-morphology engqukuva, kunye nolawulo lobungakanani obuqinileyo (D10–D90 span <1.8). Sijikeleza i-AMS 5387 electrode kwi-12,500 rpm ngaphakathi kumagumbi okufunxa abanjwe kwi-1 × 10−2 mbar. I-powder ephumayo ihamba kwi-22 s / 50g (i-Hall Flowmeter), ipakisha ukuya kwi-62% ebonakalayo yoxinaniso, kunye ne-sinters ukuya> 99.2% yoxinaniso lwethiyori ngaphandle kwe-HIP. Kodwa i-REP ayiyondalo yonke-siyayiphepha ngenxa yentsimbi efuna indawo ze-graphite nucleation. Kunoko, sisebenzisa i-Fe-2.5C ye-powder e-atomized yamanzi kunye ne-carbon segregation elawulwayo, emva koko yongeza i-0.8% ye-flake graphite ngexesha lokuxuba ukuqinisekisa ii-nodule ze-graphite ezifanayo emva kwe-sinter-anneal.
Amasango asemgangathweni: Akukho Powder eshiya ngaphandle kokudlula zonke ezine
Sinyanzelisa iindawo zokukhangela ezine ezingaxoxisiyo phambi kokuba nayiphi na ibhetshi yomgubo ihambe idityaniswe:
- Ukuqinisekiswa kweekhemikhali: I-ICP-OES ngokuchasene nezixhobo zereferensi eziqinisekisiweyo (CRM NIST SRM 1262a for Co, CRM NIST SRM 3125a for Ni); ukutenxa > i-0.15% ibangela ukuphinda kuhlolwe ngokupheleleyo
- Ubungakanani besuntswana kunye nokumila: I-Laser diffraction (i-Malvern Mastersizer 3000) + umfanekiso we-SEM; ispect ratio >1.8 okanye ukujikeleza <0.7 ayifanelekanga
- Ukuhamba kunye nokuxinana: I-Flowmeter yeHolo + iVolumeter yaseScott; umyinge wokuhamba kufuneka ube yi-18–24 s/50g, ubuninzi bobuninzi 2.8–3.1 g/cm³
- Ukuhlolwa kongcoliseko: I-Ferrography ye-ferrous wear debris; I-XRF yokuskena i-Cr, i-Mo, okanye i-Ti ilanda ukusuka kwimitsi yangaphambili
Sifaka zonke iziphumo kwinkqubo yethu ye-ISO 9001-eqinisekisiweyo ye-MES-ngokulandeleka okupheleleyo kwezinto ezibuyela kwinombolo yobushushu be-ingot eluhlaza. Ukuba ibhetshi iyasilela nakwisango elinye, iyanyibilika—ayithotywanga.
Kutheni “Ukusebenza” Kuthetha Ukwahluka okulawulwayo, Hayi Isantya
Ezinye iifektri zileqa iitoni ngeyure. Sileqa ukutenxa okusemgangathweni. Kwimveliso yethu yomgubo kwimisebenzi yefektri yesinyithi, ukusebenza kakuhle kuthetha ukubamba i-D50 ukwahluka ukuya ku-± 0.9 μm kwiibhetshi ezilandelelanayo ezili-10-hayi ukusika ixesha le-atomization nge-12%. Ngoba? Kuba izindlu zempompo zepiston ezenziwe ngoomatshini ukusuka kumgubo nge ±3.2 μm D50 ukwahluka kubonise i-22% ephezulu yokuvuza amazinga ekuvavanyeni uxinzelelo kwi-350 bar. Sityala imali ekujongweni kwexesha lokwenyani lobushushu beplasma, ulawulo loxinzelelo lwegesi oluvaliweyo, kunye nokulinganisa okuzenzekelayo kwe-sieve shaker rhoqo kwiiyure ezi-4. I-ROI ayiphumi ngokukhawuleza-iphelisa ukusebenza kwakhona kwi-4,200 yeedola ze-cobalt izihlalo ze-valve.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. Uphatha umgubo kungekhona njengento ekrwada kodwa njengesiseko se-DNA yawo onke amacandelo. Imveliso yethu yomgubo kwi-powder metallurgy factory workflow iqala ngokuqinisekiswa kwe-alloy chemistry, iqhubeka nge-atomization eyenziwe nge-kinematically, kwaye iphele kuphela emva kokuba amasango amane azimeleyo aqinisekisa ukuphindaphinda-kungekhona kanye, kodwa kwikhilogram nganye kwiqashiso. Yiyo indlela iivalve zoxinzelelo eziphila ngayo iiyure ezili-15,000 zenkonzo kwiimpompo zangaphantsi kolwandle. Yiloo ndlela i-winch center shaft rollers igcina ngayo ukuphuma phantsi kwe-8 μm emva kwe-500 ye-thermal cycles. Ikamva lingabavelisi bepowder abalinganisa impumelelo kungekhona ngeekhilogram ngeshift-kodwa kwi-microstructures nge-micrometer.
