WCB, cov khoom siv hlau carbon casting ua raws li ASTM A216 Qib WCB, dhau los ntawm cov txheej txheem kho cua sov kom ua tiav cov khoom siv kho tshuab xav tau, kev ruaj khov ntawm qhov ntev, thiab kev tiv taus kev ntxhov siab thermal. Hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm cov txheej txheem kho cua sov rau WCB.YD7A1X-16 Npauj Npaim Valvecov khoom pov thawj:
1. Ua kom sov ua ntej
- Lub Hom Phiaj: Txhawm rau txo qhov thermal gradients thiab tiv thaiv kev tawg thaum lub sijhawm kho mob kub tom qab.
- Txheej Txheem: Cov castings raug cua sov maj mam hauv lub cub tawg tswj hwm mus rau qhov kub thiab txias ntawm 300–400°C (572–752°F).
- Cov Txheej Txheem Tseem Ceeb: Tus nqi cua sov tseem nyob ntawm 50–100°C/teev (90–180°F/teev)kom ntseeg tau tias qhov kub thiab txias sib npaug.
2. Austenitizing (Normalizing)
- Lub Hom Phiaj: Txhawm rau kom homogenize cov microstructure, ua kom cov noob loj me, thiab yaj cov carbides.
- Txheej Txheem:
- Cov castings raug cua sov rau qhov kub austenitizing ntawm890–940°C (1634–1724°F).
- Khaws cia rau qhov kub no rau1–2 teev rau txhua 25 hli (1 nti) ntawm qhov tuab ntawm seemkom ntseeg tau tias muaj kev hloov pauv theem tiav.
- Txias hauv huab cua tseem (normalizing) mus rau chav tsev kub.
3. Kev kub ntxhov
- Lub Hom Phiaj: Txhawm rau txo cov kev ntxhov siab seem, txhim kho kev tawv, thiab ruaj khov microstructure.
- Txheej Txheem:
- Tom qab normalizing, cov castings raug reheated mus rau qhov kub tempering ntawm 590–720°C (1094–1328°F).
- Ua kom sov rau lub caij ntuj no1–2 teev rau txhua 25 hli (1 nti) ntawm qhov tuab.
- Txias hauv huab cua lossis cua sov-txias ntawm qhov ceev tswj kom tiv thaiv kev tsim kev ntxhov siab tshiab.
4. Kev Tshuaj Xyuas Tom Qab Kev Kho Mob
- Lub Hom Phiaj: Txhawm rau txheeb xyuas kev ua raws li ASTM A216 cov qauv.
- Txheej Txheem:
- Kev sim tshuab (piv txwv li, lub zog tensile, lub zog yield, hardness).
- Kev tshuaj xyuas microstructural kom ntseeg tau tias muaj kev sib npaug thiab tsis muaj qhov tsis zoo.
- Kev kuaj xyuas qhov ntev kom paub tseeb tias ruaj khov tom qab kho cua sov.
Cov Kauj Ruam Xaiv Tau (Tshwj Xeeb Rau Cov Neeg Mob)
- Kev Txo Kev Nyuaj SiabRau cov geometries nyuaj, ib lub voj voog txo kev ntxhov siab ntxiv yuav raug ua tiav ntawm600–650°C (1112–1202°F)kom tshem tawm cov kev ntxhov siab seem los ntawm kev ua haujlwm lossis kev vuam.
- Kev Tswj Xyuas TxiasRau cov castings tuab, cov cua txias qeeb dua (piv txwv li, cua txias hauv lub cub tawg) yuav siv tau thaum lub sijhawm tempering kom txhim kho ductility.
Cov Kev Xav Tseem Ceeb
- Huab cua ntawm lub cub tawg: Huab cua nruab nrab los yog me ntsis oxidizing kom tiv thaiv decarburization.
- Kev Sib Npaug KubKev kam rau siab ± 10 ° C kom ntseeg tau tias cov txiaj ntsig zoo sib xws.
- Cov ntaub ntawv pov thawj: Kev taug qab tag nrho ntawm cov kev kho cua sov (lub sijhawm, kub, tus nqi txias) rau kev lees paub zoo.
Cov txheej txheem no ua kom ntseeg tau tiasTWS concentric npauj npaim valvelub cevD341B1X-16Hauv WCB castings ua tau raws li ASTM A216 qhov yuav tsum tau ua rau lub zog tensile (≥485 MPa), lub zog tawm los (≥250 MPa), thiab elongation (≥22%), ua rau lawv haum rau kev siv kub thiab siab hauv cov li qub, twj tso kua mis, thiab cov kav dej.
Los ntawmTWS VALVE, ib tug neeg muaj kev paub txog kev tsim khoomroj hmab zaum concentric npauj npaim valve YD37A1X, lub qhov rooj vag valve, Y-strainer manufacture.
Lub sijhawm tshaj tawm: Plaub Hlis-02-2025
