I. Cov Khoom Siv Xwm thiab Cov Khoom Tseem Ceeb
Q1: Dab tsi yog ONCOY tsim logic thiab cov yam ntxwv ua kev ua haujlwm ntawm 94b17 steel yeeb nkab?
A1:
ASTM A 519 94 b17 yog qhov tsawg}}} {}}}}}} molybdenum steel yeeb nkab. Nws muaj pes tsawg leeg (0.15-0.20% C, 0.40-0.60%, mo, 0.00- Cib
Dual -} ntug vuam thiab carburizing kev ua tau zoo: carbon sib npaug: tsawg dua los yog sib npaug lossis muaj sib npaug tsis muaj preheating; Tom qab carburizing, lub hardness nto tuaj yeem ncav cuag HRC 60-64, thaum lub zog tseem ceeb yog tswj hwm (cuam tshuam rau 505j ntawm -20 degree);
Precisely tswj cov tawv tawv: cov kab tseem ceeb (roj quenching) yog 45 - 55 hli, haum rau nruab nrab ntu nyuaj;
Qhov tseem ceeb tus nqi - ua tau zoo: tus nqi yog 15% qis dua li carburizing hlau 20mncr5 thiab 22% qis dua {5 5} h. Cov Kev Siv Raug:
Cov ntiaj chaw rau cov neeg siv hluav taws xob reducers;
Cov Actuatators Hydraulic rau Aerospace;
Flexspline zog zog rau high - precision harchonic reducers rau cov neeg hlau.
Ii. Kev ua tau zoo nrog cov khoom siv sib tw
Q2: Yuav ua li cas qhov sib txawv ntawm 94b17, 20mncr5, thiab sae8617 h Qhia cov khoom xaiv?
A2:
Kev sib xyaw sib txawv:
94b17: Boron hloov ib feem ntawm manganese (0.6-0.9%) hauv 20mncr5, thaum txo cov ntsiab lus carbon thiab txhim kho wardability.
{{0 {{{} h: npib tsib caug (0.40-0.70%) txhim kho kev nruj, tab sis cov nqi 30% ntau dua.
Kev Ua Tau Marints:
Carburizing efficiency: 94b17 yog 20% sai dua 8617 h thaum lub sij hawm teeb meem carburizes nyob rau 930 degree.
Qaug zog lub neej: kev sib cuag kev qaug zog tsis pub tshaj (600 MPA) ntawm 94B17 yog 15% siab dua li ntawm 20MNCCR5. III. Kev Ua Haujlwm Tshiab Hauv Cov Txheej Txheem Cua Sov
Q3: Dab tsi yog txiav - ntug cov txheej txheem hauv carburizing kev kho cua sov rau 94b17 kav hlau?
A3:
Cov txheej txheem Benchmark:
Tsawg -} Lub Siab Carburizing (950 Qib X 5H, Acetylene Roj Qhov tob ntawm 0.8-1.2Mm (Gradient Tswj ± 0.03mm);
High - pa roj quenching (12 bar nitrogen) txo kev deformation (iav suab tawm tsawg dua lossis sib npaug rau 0.015mm);
Cryogenic kev kho (-110℃X 4H) hloov pauv Austenite Austenite (tsawg dua lossis sib npaug rau 5%).
Kev tawg ua:
Ntshav -} Pab Carburizing (nce carburizing los ntawm 25%, txo kev siv hluav taws xob los ntawm 15%);
AI Dynamic cov pa roj carbon ntau cov peev txheej tswj (raws li tiag - lub sij hawm} lub sij hawm tsom xam, raug 0.05% c).
IV. Puv lub neej zoo tswj
Q4: Dab tsi yog cov tub ntxhais muaj kev tswj hwm zoo uas yuav tsum tau ua rau aerospace - qib 94b17 kav hlau? A4:
Metallurgy theem:
Nqus tau los ntawm melting (vim) nrog [O] tsawg dua los yog sib npaug rau 8ppm, [n] tsawg dua los yog sib npaug rau 30ppm;
Electromagnetic Birring Nrauv Nrawm Casting (Central CastRation tsawg dua los yog sib luag rau qib B).
Ua theem:
Grain loj me qha ua ntej carburizing (ttm qib 6-8);
100% fluorescent penetrant ntsuam xyuas tom qab iav sib tsoo (Tshooj 2647 txuj ci).
Qhia tseeb:
Tib rab qam khoov rog rog (ntau dua los yog sib npaug rau 2 × 10⁷ mus los tsis muaj pob txha lov);
Hydrogen -}} inducts ncua kev sim (tawg - pub dawb rau 500 teev ntawm 85% σys load).
V. Txiav -}} ntug kev siv thiab tsis ua hauj lwm centermeasures
Q5: Yuav ua li cas hais qhov synergistic tsis ua hauj lwm ntawm 94b17 hauv hluav taws xob cov roj reducers vim pitting thiab microcacking?
A5:
Kev ua haujlwm Automatic:
Kev kub ceev (ntau dua los yog sib npaug rau 15,000 rpm) + roj av → Cov kev laus-{{5 solution educts:
Laser microtexturing (30μm diameter micro-pits for oil storage, reducing friction by 40%);
Puas tsim txheej (pob zeb diamond - zoo li cov yeeb yaj kiab carbon + molybdenum disulfide puag txheej);
Cov khoom siv muaj txiaj ntsig txog kev ua kom zoo dua (Ai pom zoo kom 0.08% NB + 0.04}}% TI sib ntxiv).
