Farsamooyinka Daawaynta Kuleylka Sare ee Wax Soo Saarka | Shangdong Yueheng

Daawaynta kulaylku waxay maamushaa cabirka waxqabadka oo ay ku jiraan nolosha daalka xidhiidhka (qiimaynta L10), xidhashada caabbinta, iyo xasilloonida cabbirka. Wax soo saarka casriga ah ayaa u baahan ± 3°C xakamaynta heerkulka iyo awoodda habka CPK≥1.33. taxanaha muhiimka ah: Spheroidizing Annealing → Dejinta → Heerkul-hooseeya → Dejinta.

1.Spheroidizing Annealing

Ujeeddo: Ciribtirka been abuurka shabakadaha carbide (≤Grade 2), samee isku mid ah spheroidized pearlite (carbide spheroidization ≥90%, dhexroor 0.2-0.6μm), adkaanta 179-207 HB. Baratakoolka laba-heer ah:

• Marxaladda 1: 790± 10°C × 2-4h austenitization (kala diri qayb carbide ah)
• Heerka 2: 710± 10°C × 4-6h qaboojin tartiib ah (≤20°C/h) ilaa 650°C, qalooca qaboojinta la xakameeyeywaxay ka hortagtaa roobka karbidhida ee aan aadka ahayn

Halbeegga xasaasiga ahCabbirka badarka 7-8 (ASTM E112)

2. Geedi socodka Deminta

Qubeyska milixda (BaCl₂:KCl=3:1) ama jawiga ilaalinta (N₂-CH₃OH, ogsijiin baaraha ≤0.5%):

• GCr15 birta: 845± 5°C × cunsur wakhtiga ( dhumucdiisuna waxay tahay 0.8-1.2 min/mm)
• Kinetics qaboojinta: 800→500°C heerka qaboojinta ≥45°C/s
• Bartilmaameedka: Cryptocrystalline martensite (> 95%, dhererka irbadda ≤0.02mm) + austenite la hayo (<5%)

3. Heerkulka Hooseeya

150-180°C × 2-4h (± 3°C) gudaha foornada hawada kululaynta qasabka ah:

• ε-Fe₂.₄C roobaadka martensite, adkaanta 61-65 HRC
• Burburinta Austenite:> 80% (XRD waa la xaqiijiyay)
• Qaabka cadaadiska cadaadiska: σ_residual=σ_initial×e^(-0.02t) (t gudaha saacadood)

4.Hab-socodyada gaarka ah & Hal-abuurka

• Austempering: 230± 10°C qubeyska milixda × 2h → bainite hoose (58-62 HRC, KCV≥50J/cm²)
• Deep Cyo: -70°C × 4h (buufin nitrogen dareere ah), austenite → martensite transformation>95%
• Hardening LaserMawjada 1064nm waxay abuurtaa 0.3mm qoto dheer oo kiis, ↑40% nolosha daalka xiriir

Qaab-dhismeedka Hubinta Tayada: