ASTM A216 Grade WCB nena inmil carbon steel casting material WCB hian mechanical property mamawh, dimensional stability leh thermal stress laka invenna tur standardized heat treatment process a paltlang a ni. A hnuaia tarlan te hi WCB tana heat treatment hnathawh dan tlangpui chipchiar taka tarlan a niYD7A1X-16 a ni Butterfly Valve a nicastings te chu:
tih a ni1. A lum hmasak bertih a ni
- tih a niChhan: Thermal gradients tih tlem nan leh a hnua high-temperature treatment neih hunah cracking awm lo turin.
- tih a niIndawtdan: Castings te chu controlled furnace ah zawi zawiin temperature range300–400°C (572–752°F) atanga a lum a ni..
- tih a niParameter pawimawh tak tak te: Heating rate chuDarkar khatah 50–100°C (darkar khatah 90–180°F) a ni.temperature insem dan inang tlang taka awm theih nan.
tih a ni2. Austenitizing (Normalizing) tih a ni.tih a ni
- tih a niChhan: Microstructure homogenize turin grain size tihthianghlim a, carbide te dissolve.
- tih a niIndawtdan: .
- Castings te chu austenitizing temperature890–940°C (1634–1724°F) atanga lum a ni..
- Hetiang temperature-ah hianSection thickness 25 mm (1 inch) ah darkar 1–2 vel a niphase transformation kimchang tak neih theih nan.
- Stre air (normalizing) ah room temperature thlenga tihlum.
tih a ni3. Thinrimna (Tempering).tih a ni
- tih a niChhan: Residual stress tihziaawmna tur, toughness tihchangtlun nan leh microstructure stabilize turin.
- tih a niIndawtdan: .
- Normalize hnuah castings te chu tempering temperature590–720°C (1094–1328°F) atanga lum a ni..
- Hetiang temperature-ah hian25 mm (1 inch) a thuk zawngah darkar 1–2 vel a ni.
- Thli-a tihlum emaw, furnace-a tihlum emaw chu controlled rate-a tihlum a ni a, chu chuan stress thar a siam loh nan.
tih a ni4. Enkawl hnua endiktih a ni
- tih a niChhan: ASTM A216 standard zawm leh zawm loh enfiah.
- tih a niIndawtdan: .
- Mechanical testing (eg, tensile chakna, yield chakna, hardness) hmanga enfiah a ni.
- Microstructural analysis hmanga uniformity leh chhiatna awm lohna tur.
- Dimensional checks hmanga stability post-heat treatment tih chian a ni.
tih a niA duhthlan tur Step (Case-Specific) 1.1.tih a ni
- tih a niStress tihziaawmna: Complex geometries tan chuan stress-relief cycle dang tih theih a ni a,600–650°C (1112–1202°F) atanga lum a ni.machining emaw welding emaw atanga residual stress awm thin tihbo nan.
- tih a niControlled Cooling a ni: Thick-section casting tan chuan tempering laiin ductility tihsan nan cooling rates slow zawk (eg, furnace cooling) hman theih a ni.
tih a niNgaihtuah Tur pawimawh tak taktih a ni
- tih a niFurnace boruak a awm: Neutral emaw oxidizing deuh emaw boruak a awm a, chu chuan decarburization a awm loh nan.
- tih a niTemperature inang tlanga awm: ±10°C tolerance a ni a, result mumal tak a awm theih nan.
- tih a niDocumentation a awm bawk: Quality assurance atan heat treatment parameters (hun, temperature, cooling rates) te full traceability.
Hetiang kalphung hian a tichiang a niTWS concentric butterfly valve chu a awm ataksaD341B1X-16 a niin WCB castings te hian ASTM A216 mamawh tensile strength (≥485 MPa), yield strength (≥250 MPa), leh elongation (≥22%) te a tlin a, hei hian valve, pump, leh piping system-a high-temperature leh pressure application atan a tha hle.
AtanginTWS VALVE a ni, thil siam chhuah lama tawnhriat ngah takrubber hmanga thut concentric butterfly valve hmanga siam a ni YD37A1X a ni, gate valve, Y-strainer siamna hmun a ni.
Post hun chhung: Apr-02-2025
