Awọn imọ-ẹrọ itọju ooru ti ilọsiwaju fun iṣelọpọ iṣelọpọ | Shangdong yueheng

Itọju ooru ti n ṣe awọn iṣẹ iṣọn imudara pẹlu kan igbesi aye (idiyele idakẹjẹ), wọ resistance, wọ lodidi, ati iduroṣinṣin onisẹ. Itọju igbalode nilo ± 3 ° CHAGE ati ilana agbara cpk≥1.33. Afọwọkọ ọkọọkan: Sporodadizing aafin → ihnhinning → iwọn otutu otutu-otutu ni simidilization.

1.Spyheroizing Afikun

Ero: imukuro gbigbe awọn nẹtiwọọki carbide (≤grade 2), ṣe agbekalẹ okuta iyebiye ati abo ti carbide ≥90%, iwọn ila opin 178-207 HB. Ilana ipele meji:

• Ipele 1: 790 ± 10 ° C × 2-4at augniitization (ipin ọkọ oju-omi giga)
• Ipele 2: 710 ± 10 ° C × 4-6h lọra (≤20 ° C / h) si 650 ° C, ti a ṣakoso circve itutuṣe idiwọ carbipar corbipar

Apari pataki: Iwọn ọkà 7-8 (ASTM E112)

1.quechinging ilana

Iyọ iwẹ (bacl₂: KCL = 3: 1) tabi aabo aabo (N₂-CHHAH, atẹgun atẹgun ≤0.5%):

• Irin Irin: 845 ± 5 ° C × akoko (sisanra ogiri × 0.8-1.2 min / mm)
• Itulẹ kinetiki: 800 →00 →00 ≥ ≥45 ° C / S / S (Yago (Idapọ Ferrite), itutu afẹfẹ ti o lọra ni isalẹ 300 ° C
• Afojusun: Cryptocrystalline Marnnsite (> 95%, gigun abẹrẹ ≤0.02mm) +

3.LOW otutu-otutu

150-180 ° C × 2-4 (± 3 ° C) ni Fi agbara mu awọn ohun elo afẹfẹ:

• Olori ε -. Dapin ojoriro ni Marnite, lile 61-65 HRC
• Decompoite Austinite:> 80% (XRD Creffied)
• Aṣeyọri Ipaniyan: σ_resusidial = σ_intilial × e ^ (- 0.02T) (t ni awọn wakati)

4.special Awọn ilana & Awọn Tuntun

• Augempering: 230 ± C iyọ wẹ × 2h → Laini Tọsí (58-62 HRC, KCVY50J / CM²)
• Jinjin: -70 ° C × 4h (omi fun sokiri nitrogen), Austenite → Martinite iyipada> 95%
• Lesa lesa: 1064Nm welgming ṣẹda ijinle ọran 0.3mm, ↑ 40% kan si igbesi aye rirẹ

Ilana Idaniloju Didara: