Ukukhethwa kwezinto ezibonakalayo kanye nezici zokusebenza kwama-valve ensimbi engagqwali

i-valve yensimbi engenasici iwuhlobo lwe-valve eyenziwe ngezinto zensimbi engagqwali, ngenxa yokumelana kwayo okuhle kakhulu nokugqwala, amandla okushisa aphezulu nokumelana ne-oxidation, esetshenziswa kabanzi ku-petroleum, amakhemikhali, i-metallurgy, ukwakhiwa nezinye izimboni. Leli phepha lizohlaziya ukukhethwa kwezinto ezibonakalayo kanye nezici zokusebenza kwama-valve ensimbi engagqwali.

Okokuqala, ukukhetha impahla
Izinto ezisetshenziswa amavalvu ensimbi engagqwali ikakhulukazi i-austenitic stainless steel, i-ferritic stainless steel kanye ne-austenitic ferritic duplex steel stainless.
1. Insimbi engagqwali ye-Austenitic: Insimbi engagqwali ye-Austenitic ngokuyinhloko iqukethe i-chromium, i-nickel nezinye izakhi, ezinokumelana nokugqwala okuhle namandla okushisa aphezulu, ezifanele izinga lokushisa eliphezulu, ukucindezela okuphezulu nezimo zemidiya ezigqwalayo. Insimbi engagqwali evamile ye-austenitic 304, 316 njalonjalo.

2. Insimbi engagqwali ye-Ferritic: insimbi engagqwali ye-ferritic ikakhulukazi iqukethe i-chromium, i-nickel, i-molybdenum nezinye izakhi, ezinamandla amakhulu, ukumelana ne-oxidation nokugqoka ukumelana, kufanelekile ukushisa okuphezulu, ukucindezela okuphezulu kanye nezimo eziphakathi kwe-oxidizing. Insimbi engagqwali evamile ye-ferritic 410, 420 njalonjalo.

3. I-Austenitic ferritic duplex insimbi engagqwali: I-Austenitic ferritic duplex stainless steel inezigaba ezimbili ze-austenitic ne-ferritic, ehlanganisa ukumelana nokugqwala kwe-austenitic stainless steel kanye namandla aphezulu ensimbi engagqwali ye-ferritic, futhi ifanele izimo zokusebenza eziyinkimbinkimbi. Insimbi engagqwali eyi-duplex ejwayelekile 2205, 2507 njalonjalo.

Okwesibili, izici zokusebenza
Izici zokusebenza zama-valve ensimbi engagqwali zibonakala ikakhulukazi kulezi zici ezilandelayo:
1. Ukumelana nokugqwala okuhle kakhulu: ama-valve ensimbi engenasici anokumelana nokugqwala okuhle kakhulu futhi angakwazi ukumelana nokugqwala kwemithombo yezindaba ehlukahlukene, enciphisa izindleko zokugcinwa kwemishini nokushintshwa.

2. Amandla okushisa aphezulu: i-valve yensimbi engenasici inamandla okushisa aphezulu, ingagcina izakhiwo ezinhle zemishini endaweni yokushisa ephezulu, ifanele ukushisa okuphezulu, izimo zokusebenza ezicindezelayo.

3. Ukumelana ne-oxidation: i-valve yensimbi engagqwali inokumelana okuhle kwe-oxidation, engamelana nokugqwala kwemidiya ye-oxidizing futhi ithuthukise impilo yesevisi ye-valve.

4. Ukumelana nokugqoka: I-valve yensimbi engagqwali inokumelana okuhle kokugqoka, okunganciphisa ukuguga kwe-valve ngesikhathi sokusetshenziswa futhi kunciphise izindleko zokugcinwa kwemishini nokushintshwa.

5. Ukusebenza kahle kokuvala: i-valve yensimbi engagqwali yamukela isakhiwo sokuvala esithuthukisiwe, inomsebenzi omuhle wokuvala, inciphisa ingozi yokuvuza, futhi iqinisekisa ukuphepha nokuthembeka kokusebenza kwemishini.

Kafushane, i-valve yensimbi engagqwali ekukhethweni kwezinto ezibonakalayo, ikakhulukazi ngokwezimo zokusebenza ukuze ukhethe insimbi engagqwali ye-austenitic efanele, insimbi engagqwali ye-ferritic noma insimbi engagqwali ye-austenitic ferritic duplex. Mayelana nezici zokusebenza zama-valve ensimbi engagqwali, anokumelana nokugqwala okuhle kakhulu, amandla okushisa aphezulu, ukumelana ne-oxidation, ukumelana nokugqoka nokusebenza kahle kokuvala, futhi asetshenziswa kabanzi emikhakheni ehlukahlukene yezimboni.