Kev tsim cov hmoov hlau zoo yog thawj kauj ruam tseem ceeb hauv cov hmoov hlau metallurgy lub Hoobkas - thiab qhov kev sib txuas tsis muaj zog tshaj plaws hauv cov saw hlau tuaj yeem cuam tshuam txhua txoj hauv kev hauv qab. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb tau ua tiav ntau tshaj 12,000 kg ntawm cobalt-nickel thiab stainless hlau hmoov rau hydraulic valve lub cev thaum ntxov, twj tso kua mis vaj tse, thiab AMS 5387-raws li nozzles txij li thaum 2021. Qhov peb kawm tsis yog theoretical particles 7% tsis ua hauj lwm ntawm kev faib tawm hauv T800 alloy qhov chaw; noo noo cov ntsiab lus siab tshaj 0.08% triggered nto pitting thaum kub isostatic nias; thiab tus neeg muag khoom tsis tau lees paub batch traceability ncua peb cov neeg siv khoom tshawb xyuas. Cov hmoov nplej tiag tiag hauv ntiaj teb xav tau ntau dua li cov cuab yeej siv - nws xav tau kev qhuab qhia metallurgical, cov txheej txheem rov ua dua, thiab xoom kam rau qhov sib txawv.
Atomization: Qhov twg Chemistry ntsib Kinematics
Gas atomization tseem yog peb txoj kev mus rau cobalt-raws li alloys zoo li T800 thiab AMS 5387-tshwj xeeb tshaj yog thaum qhov kev ruaj ntseg nyob rau hauv 200 MPa hydraulic loads yog tsis-negotiable. Peb siv nitrogen ntawm 7.2 MPa siab thiab 45 ° yaj-kem impingement lub kaum sab xis kom ua tiav D50 Luas = 28-32 m <5% oversize (>106 μm) cov khoom. Dej atomization ua haujlwm rau cov qauv hlau hmoov (xws li SS316L rau cov twj tso kua mis), tab sis tsuas yog tom qab nruj tom qab atomization annealing ntawm 950 ° C hauv hydrogen kom txo cov pa oxygen hauv qab 0.15 wt%. Qhov tseem ceeb, peb tsis txhob hla qhov kev sim ultrasonic dispersion ua ntej sieving: yog hais tias cov khoom rov agglomerate li ntawm 90 vib nas this hauv isopropyl cawv, peb tsis lees txais ntau ntau - txawm tias kev soj ntsuam sieve dhau. Tias yog vim li cas agglomerates tawg unpredictably thaum lub sij hawm compaction, tsim ceev gradients uas pib micro-cracks thaum sintering.
Rotary Electrode Txheej Txheem: Rau Thaum Koj Tsis Muaj Peev Xwm Oxides
Rau cobalt-nickel nozzles ua haujlwm siab tshaj 650 ° C hauv cov cuab yeej roj thiab roj, cov oxide suav nrog yog qhov tsis zoo. Ntawm no, rotary electrode processing (REP) xa cov roj atomization tsis tuaj yeem: zero oxygen (<0.02 wt%), spherical morphology, thiab nruj me me tswj (D10-D90 ncua <1.8). Peb tig AMS 5387 electrodes ntawm 12,500 rpm hauv lub tshuab nqus tsev nyob ntawm 1 × 10-2 mbar ua. Lub resulting hmoov ntws ntawm 22 s / 50g (Hall Flowmeter), packs rau 62% pom meej ntom, thiab sinters rau> 99.2% theoretical ntom yam tsis muaj HIP. Tab sis REP tsis yog universal - peb zam nws rau hlau castings xav tau graphite nucleation qhov chaw. Hloov chaw, peb siv dej-atomized Fe-2.5C hmoov nrog tswj cov pa roj carbon monoxide, tom qab ntawd ntxiv 0.8% flake graphite thaum sib tov kom paub meej cov graphite nodules tom qab sinter-anneal.
Cov rooj vag zoo: Tsis muaj hmoov nplej tsis dhau tag nrho plaub
Peb tswj hwm plaub qhov chaw tsis sib tham ua ntej cov hmoov batch txav mus rau kev sib xyaw:
- Tshuaj ntsuam xyuas: ICP-OES tiv thaiv cov ntaub ntawv pov thawj (CRM NIST SRM 1262a rau Co, CRM NIST SRM 3125a rau Ni); Kev sib txawv> 0.15% ua rau rov ntsuas dua
- Particle loj & puab: Laser diffraction (Malvern Mastersizer 3000) + SEM duab; nam piv> 1.8 los yog ncig <0.7 tsis tsim nyog
- Flow & ceev: Hall Flowmeter + Scott Volumeter; Cov dej ntws yuav tsum yog 18-24 s / 50g, qhov ntom ntom 2.8-3.1 g / cm³
- Kev tshuaj ntsuam kab mob: Ferrography rau ferrous hnav khib nyiab; XRF luam theej duab rau Cr, Mo, lossis Ti kab los ntawm kev khiav dhau los
Peb teev txhua qhov tshwm sim hauv peb qhov ISO 9001-certified MES system-nrog tag nrho cov ntaub ntawv traceability rov qab mus rau raw ingot kub tooj. Yog hais tias ib pawg ua tsis tau txawm tias ib lub rooj vag, nws yog remelted - tsis downgraded.
Vim li cas "Efficient" txhais tau tias tswj kev hloov pauv, tsis nrawm
Qee lub tsev lag luam tau caum tonnage ib teev. Peb caum tus qauv sib txawv. Nyob rau hauv peb cov hmoov ntau lawm hauv hmoov metallurgy Hoobkas ua hauj lwm, efficiency txhais tau tias tuav D50 variation rau ± 0.9 μm hla 10 pawg sib law liag - tsis txiav lub sij hawm atomization los ntawm 12%. Vim li cas? Vim hais tias piston twj tso kua mis lub tog raj kheej nyob machined los ntawm hmoov nrog ± 3.2 μm D50 Kev hloov pauv tau pom 22% siab dua cov pa tawm hauv kev ntsuas siab ntawm 350 bar. Peb nqis peev rau hauv lub sijhawm tiag tiag ntawm kev ntsuas ntshav ntshav ntsuas, kaw lub voj voog roj siab tswj, thiab kev siv lub tshuab hluav taws xob tsis siv neeg shaker calibration txhua 4 teev. ROI tsis yog tawm sai dua - nws tshem tawm cov kev ua haujlwm ntawm $ 4,200 cobalt alloy valve rooj zaum.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. kho cov hmoov tsis yog raw khoom tab sis raws li lub hauv paus DNA ntawm txhua yam. Peb cov hmoov ntau lawm hauv hmoov metallurgy Hoobkas workflow pib nrog alloy chemistry validation, txuas ntxiv los ntawm kinematically optimized atomization, thiab xaus tsuas yog tom qab plaub lub rooj vag ywj siab zoo lees paub qhov rov ua dua-tsis yog ib zaug xwb, tab sis thoob plaws txhua kilogram hauv ntau. Qhov ntawd yog li cas lub siab li qub muaj sia nyob 15,000-teev kev pabcuam lub neej hauv cov twj subsea. Qhov ntawd yog li cas winch shaft rollers tswj kev khiav qis dua 8 μm tom qab 500 thermal voj voog. Lub neej yav tom ntej belongs rau cov neeg tsim cov hmoov uas ntsuas kev ua tiav tsis nyob rau hauv kilograms ib zaug - tab sis nyob rau hauv microstructures ib micrometer.
