Valve internals ua haujlwm nyob rau hauv ib puag ncig xav tau heev, ntsib:
Erosion: Ua los ntawm cov kua dej ntau dhau los yog cov kua dej ua kua.
Corrosion: Los ntawm chemically aggressive media.
Cavitation: Qhov tsim thiab vau ntawm vapor npuas, ua rau nto pitting.
High-Pressure / Kub: Ua rau galling (adhesive hnav) thiab deformation.
Txhawm rau tiv thaiv cov teeb meem no, lub valve sab hauv feem ntau yog tsim los ntawm lossis tiv thaiv cov ntaub ntawv siab heev, nrog tungsten carbide yog qhov kev xaiv sab saum toj rau cov kev pabcuam hnyav tshaj plaws.
Cov lus hauv qab no qhia txog cov valve sab hauv, lawv cov kev cov nyom, thiab cov kev daws teeb meem zoo ib yam:
| Cheebtsam | Muaj nuj nqi | Common Wear Mechanisms | Tej yam khoom siv daws teeb meem |
| Rooj | Muab lub sealing nto rau kev kaw. | Erosion, Cavitation, Galling, Corrosion. | Tungsten Carbide, Stellite (Cobalt-Chrome), 316SS, Alloy 6, Ceramics. |
| Kaw Tus Tswv Cuab (Plug/Disc) | Txav mus qhib / kaw txoj kev ntws. | Erosion, Cavitation, Galling, Corrosion. | Tungsten Carbide, Stellite, 316SS, Hardened Steels. |
| Qe | Hloov cov lus tsa suab los ntawm actuator mus rau tus tswv cuab kaw. | Abrasion, qaug zog, Corrosion. | 17-4PH Stainless Hlau, Nitrided Steels, Corrosion-Resistant Alloys. |
| Cage | Qhia qhov ntsaws thiab tswj cov yam ntxwv ntws. | Hnyav Erosion, Cavitation, Suab nrov / vibration. | Tungsten Carbide, Stellite, 316SS, Duplex Stainless Steels. |
| Seals & Gaskets | Tiv thaiv sab nraud thiab sab hauv to. | Extrusion, tshuaj degradation, Thaum tshav kub kub laus. | PTFE (Teflon), Grafoil, Elastomers (Viton, EPDM). |
Vim li cas tungsten Carbide rau Valve Internals?
Hauv cov ntawv thov tseem ceeb pom hauv cov roj & roj, lub zog tsim hluav taws xob, thiab kev lag luam tshuaj lom neeg, tungsten carbide yog teev rau trim Cheebtsam vim nws:
Exceptional Erosion Resistance: Txhawm rau tiv thaiv cov xuab zeb thiab lwm yam nyuaj hauv cov dej ntws.
Zoo Cavitation Resistance: Nws hardness tiv thaiv cov khoom poob los ntawm imploding vapor npuas.
High Compressive zog: Los tiv thaiv deformation nyob rau hauv siab.
Zoo Galling Resistance: Thaum ua ke nrog cov khoom sib xws, nws txo qhov kev pheej hmoo ntawm kev txeeb.
Hauv cov ntsiab lus, Valve Internals yog lub plawv ntawm lub valve. Lawv xaiv, tshwj xeeb tshaj yog cov kev xaiv ntawm hnav-resistant cov ntaub ntawv xws li tungsten carbide rau trim qhov chaw, yog qhov kev txiav txim siab tseem ceeb hauv engineering uas ncaj qha txiav txim siab lub valve qhov kev ua tau zoo, kev pabcuam lub neej, thiab kev nyab xeeb tag nrho hauv kev ua haujlwm nyuaj.
