Ihe mkpuchi valve bụ akụkụ dị mkpa nke akara valvụ. Kedu ihe bụ ihe mkpuchi valve? Anyị maara na valvụ akara ihe mgbanaka na-ekewa ụzọ abụọ: metal na-abụghị metal. Ihe na-esonụ bụ okwu mmeghe nkenke maka ọnọdụ ojiji nke ihe mkpuchi dị iche iche, yana ụdị valvụ a na-ejikarị eme ihe.
1. roba sịntetik
Ngwongwo zuru oke nke roba sịntetik dị ka mmanụ na-eguzogide mmanụ, nguzogide okpomọkụ na nguzogide corrosion dị mma karịa nke roba eke. N'ozuzu, ojiji okpomọkụ nke sịntetik roba bụ t≤150 ℃, na okpomọkụ nke eke roba bụ t≤60 ℃. rọba na-eji mechie globe valves,roba ọdụ valvụ ọnụ ụzọ ámá, valvụ diaphragm,rubber ọdụ nru ububa valvụ, rubber ọdụ swing check valvụ (ịlele valvụ), valvụ tuo na valvụ ndị ọzọ nwere nrụgide ọnụ ala PN≤1MPa.
2. Naịlọn
Naịlọn nwere njirimara nke obere ọnụọgụ esemokwu yana ezigbo nguzogide corrosion. Naịlọn na-akasị eji maka bọl valvụ na globe valves na okpomọkụ t≤90℃ na nominal mgbali PN≤32MPa.
3. PTFE
A na-ejikarị PTFE maka valvụ ụwa,valvụ ọnụ ụzọ ámá, bọl valves, wdg na okpomọkụ t≤232 ℃ na nominal mgbali PN≤6.4MPa.
4. Nkedo ígwè
A na-eji ígwè nkedo eme ihevalvụ ọnụ ụzọ ámá, globe valvụ, nkwụnye valvụ, wdg maka okpomọkụ t≤100 ℃, nominal mgbali PN≤1.6MPa, gas na mmanụ.
5. Babbitt alloy
Babbitt alloy na-eji maka amonia globe valvụ na okpomọkụ t-70 ~ 150 ℃ na nominal mgbali PN≤2.5MPa.
6. ọla kọpa alloy
Ihe ndị a na-emekarị maka alloys ọla kọpa bụ 6-6-3 tin bronze na 58-2-2 manganese brass. Ọla kọpa alloy nwere ezigbo eyi na-eguzogide ma dabara maka mmiri na uzuoku na okpomọkụ t≤200℃ na nominal mgbali PN≤1.6MPa. A na-ejikarị ya eme ihevalvụ ọnụ ụzọ ámá, globe valves,ịlele valvụ, nkwụnye valvụ, wdg.
7. Chrome igwe anaghị agba nchara
Akara akara chromium igwe anaghị agba nchara nke a na-ejikarị bụ 2Cr13 na 3Cr13, bụ nke emenyụla na iwe, ma nwee ezigbo nguzogide corrosion. A na-ejikarị ya na valves maka mgbasa ozi dị ka mmiri, uzuoku na mmanụ ala nwere okpomọkụ t≤450 ℃ na nrụgide ọnụ ala PN≤32MPa.
8. Chromium-nickel-titanium igwe anaghị agba nchara
Ọkwa chromium-nickel-titanium igwe anaghị agba nchara a na-ejikarị bụ 1Cr18Ni9ti, nke nwere ezigbo nguzogide corrosion, nguzogide mbuze na nguzogide okpomọkụ. Ọ bụ adabara uzuoku, nitric acid na ndị ọzọ na mgbasa ozi na okpomọkụ t≤600 ℃ na nominal mgbali PN≤6.4MPa, eji globe valvụ, bọl valvụ, wdg.
9. Nitrided ígwè
Ọkwa nchara nitrided a na-ejikarị bụ 38CrMoAlA, nke nwere ezigbo nguzogide corrosion na nguzogide ntu mgbe ọgwụgwọ carburizing gasịrị. A na-ejikarị ya na valvụ ọdụ ụgbọ elu nwere okpomọkụ t≤540 ℃ na nrụgide ọnụ ala PN≤10MPa.
10. Na-atụ ụjọ
Boronizing ozugbo na-ahazi elu akara akara site na ihe nke ahụ valvụ ma ọ bụ ahụ diski, wee na-eme ọgwụgwọ elu boronizing, elu mkpuchi ahụ nwere ezigbo mgbochi iyi. A na-eji ya na valvụ ịgbanyụ ọkụ.
Oge nzipu: Jun-10-2022
