1. Cov Khoom Siv Hluav Taws Xob thiab cov khoom tseem ceeb
Q1: Dab tsi yog ONCOY tsim logic thiab cov ntsiab lus kev ua tau zoo ntawm 86 b45 steel yeeb nkab?
A1:
ASTM A 519 86 b45 yog lub boron microaloyed nruab nrab {}} molybdenum {}}}}} pakel steel yeeb nkab. Nws muaj pes tsawg leeg (0.43 {- 0.28% c, 0.00-0.40% ni, 0.00-0.003% thiab
Lub zog - kev sib npaug sib npaug: tensile lub zog loj dua los yog sib npaug rau ntawm 8J ntawm -30 cov ntaub ntawv (205 Anshan ntsuas cov ntaub ntawv);
Huab kev nyuaj: Qhov tseem ceeb Inch (roj quenching) ncav cuag rau ultra {{tus ntoo khaublig loj {2}
Dynamic thauj khoom hloov tau zoo: hu rau kev ua phem lub neej yog 30% ntev dua ib txwm muaj 4145h hlau;
Kev Ua Haujlwm Zoo Tshaj: Los ntawm Boron -}}}}}}}} yog 12% qis dua li ntawm 4340 steel nrog cov kev ua tau zoo sib xws. Cov Kev Siv Raug:
Hydraulic kheej rau cov tensioners ntawm tob - hiav txwv drilling platform;
Qhov tseem ceeb thauj khoom - bearing - phased array ultrasonic kuaj);
Txhua rau ultra - tuag forging presses.
Ii. Kev ua tau zoo nrog cov khoom siv sib tw
Q2: Yuav ua li cas ua qhov sib txawv ntawm 86 b45, 4340, thiab 50B46 Phau Ntawv Qhia Xaiv?
A2:
Kev sib xyaw sib txawv:
86 b45: nws cov ntsiab lus npib tsib xee (0.3%) yog qis dua li ntawm 4340 (1.00%), tab sis boron tau siv los them rau kev ua haujlwm tsis muaj zog.
50b46: Vim tias nws tsis muaj Nickel, nws qis {- kub toflight yog qis dua qhov hluav taws xob ntawm -30 degree).
Kev Ua Tau Marints:
Weldability: 50B46 (CE ≈ ≈ ≈ ≈ ≈ ≈ {{{{{}} b45 (CE ≈ b b45 (CE Ntau dua lossis muaj ntau dua lossis 0.60);
Nqi Qeb: 50B46 <86 b45 <4340 (ib tev ntawm hlau).
III. Kev tswj hwm kev tswj hwm cov txheej txheem cua sov
Q3: Dab tsi bottenlencks yuav tsum tau kov yeej hauv kev kho cua sov ntawm {}} b45 steel kav?
A3:
Tus txheej txheem Benchmark:
Austenitization: 860-885 Degree × 1.5H / 25 hli (yuav tsum muaj kev tiv thaiv hydrogen tiv thaiv kom tiv thaiv kev txiav txim siab ntawm Decarburization);
Quenching: Ruam Roj Quenching (120 Degree Kub Roj Rev → 40 Degree Txias Roj), Tswj Dissormation kom tsawg dua lossis sib npaug rau 0.02mm / m;
Tempering: Peb {- taus} theem tempering (180}+ 550℃× 4h {) kom tshem tawm cov austenite.
MicroalyLoying Synergy:
Titanium / zr composite deoxidation (ti / zr=2}}}}}}}}}}}}}}}}}}}}}}}}}}
Tshaj tawm - tswj dov kev kho kom txaus (650℃× 2h) ua kom zoo tshaj plaws NBC Zais.
IV. Puv lub neej zoo tswj
Q4: Dab tsi yog cov tub ntxhais zoo tswj cov ntsiab lus rau86 b45 cov khoom siv steel siv hauv cov khoom hauv hiav txwv sib sib zog nqus? A4:
Metallurgy theem:
Nqus plua plav (H₂ tsawg dua lossis sib npaug rau 1.0 ppm, o₂ tsawg dua lossis sib npaug rau 12 pm);
Cov kev kho mob hloov pauv (chav kawm qib chav (chav kawm B tsawg dua lossis sib luag rau qib 1.0).
Ua theem:
Kub iSostatic nias (hip) kom tshem tawm sab hauv kev tsis zoo (porosity tsawg dua los yog sib npaug nrog 0.008%);
Laser 3D Septernography Kev Soj Ntsuam (Roundnessness Deserance ± 0.04 mm).
End - ntawm - kab ntawv pov thawj:
Qeeb Qaum Tus Nqi Ntsuas Tus Nqi (SSRT) los txheeb xyuas hic rhiab;
Neutron Diffraction Realidual Kev Tshawb Fawb (gradient tsawg dua lossis sib npaug rau 180 mpa / mm).
V. Txiav -}} ntug kev siv thiab tsis ua hauj lwm centermeasures
Q5: Yuav ua li cas {{86 b45} b45 tiv thaiv sulfide kev nyuaj siab corrosion hauv ultra- Cov cuab yeej zoo drilling zoo?
A5:
Kev ua haujlwm Automatic:
H₂S ib puag ncig (ntau dua los yog sib npaug rau 50 ppm) + Kev ntxhov siab siab → sulfide kev ntxhov siab tawg (SSC). 2025 Innovation Plan:
Khoom Hloov Kho: ntxiv 0.03% Cu thiab 0.02% rov kho txhim kho corrosion;
Engine Engineering: Ntshav Elecma electrolytic oxidation (PEO) tsim ib 20μm ceramic txheej;
Saib xyuas cov ntse: hydrogen flux sensos muab tiag - lub sijhawm ceeb toom (qhov tseeb ± 0.05ppm).
