Ing WCB, metung yang carbon steel casting material a makayagpang keng ASTM A216 Grade WCB, dumalan ya keng standardized heat treatment process para akwa ing kailangang mechanical properties, dimensional stability, ampo resistance keng thermal stress. Keni lalam ing detalyadung pamaglarawan ning tipikal a heat treatment workflow para keng WCBYD7A1X-16 Butterfly Valvecastings:
1. Pamag-init
- Rasun: Para mabawas ing thermal gradients ampo aiwasan ing crack keng tutuking high-temperature treatment.
- Prosesu: Deng casting mabagal lang papalitan keng metung a kontroladung hurno angga keng temperaturang range a 300–400°C (572–752°F).
- Key Parameters: Ing heating rate mipanatili ya keng 50-100°C/oras (90-180°F/oras) para makasiguradung parehu ing pamikalat ning temperatura.
2. Austenitizing (Normalizing)
- Rasun: Para maging parehu ing microstructure, i-refine ing grain size, ampo i-dissolve ing carbides.
- Prosesu:
- Deng castings papainitan da la keng austenitizing a temperatura a 890–940°C (1634–1724°F).
- tatalan ya keng temperatura ayni para keng 1-2 oras balang 25 mm (1 pulgada) ning kapal ning section para makasiguradung kumpletu ing pamagbayu ning phase.
- Pelamig keng angin (normalizing) keng temperatura ning silid.
3. Tempering
- Rasun: Para mabawas ing residual stresses, mas masanting ing katatagan, ampo mas maging matatag ing microstructure.
- Prosesu:
- Kaybat ning pamag-normalize, deng castings mipapainit lang pasibayu keng tempering temperature a 590–720°C (1094–1328°F).
- mibabad ya keng temperatura ayni para keng 1-2 oras balang 25 mm (1 pulgada) ning kapal.
- Palamigan keng angin o palamigan keng hurno keng kontroladung rate para aiwasan ing bayung stress formation.
4. Inspeksyun Kaybat ning Pamanulu
- Rasun: Para abalu ing pamamintu kareng pamantayan ning ASTM A216.
- Prosesu:
- Mechanical testing (alimbawa, tensile strength, yield strength, hardness).
- Microstructural analysis para makasiguradung parehu at alang depektu.
- Dimensional checks para kumpirman ing katatagan kaybat ning heat treatment.
Optional a lakbang (case-specific)
- Stress Relieving: Para kareng komplikadung geometries, ing karagdagang stress-relief cycle malyari yang gawan keng 600–650°C (1112–1202°F) para mawala ing residual stresses keng pamagmakina o pamagwelding.
- Controlled Cooling: Para kareng makapal a section castings, mas mabagal ing cooling rates (alimbawa, furnace cooling) malyari yang gamitan kabang mag-tempering para mas maging ductility.
Key Consideration
- Atmospera ning hurno: Neutral o bagya oxidizing atmosphere para aiwasan ing decarburization.
- Ing Temperatura Uniformity: ±10°C tolerance para makasiguradung pare-pareu ing resulta.
- Dokumentasyon: Ganap a traceability ning heat treatment parameters (oras, temperatura, cooling rates) para keng kalidad a kasiguraduan.
Ing prosesung ayni sisiguraduan naTWS concentric butterfly valvekatawanD341B1X-16keng WCB castings makatupad la keng ASTM A216 requirements para keng tensile strength (≥485 MPa), yield strength (≥250 MPa), ampo elongation (≥22%), gagawan dong masanting para kareng high-temperature ampo pressure applications kareng valves, pumps, ampo piping systems.
MenibatTWS VALVE, metung yang byasa keng pamaglalanggoma makalukluk concentric butterfly valve YD37A1X, gate valve, Y-strainer manufacture.
Oras ning pamagpost: Apr-02-2025
