Akara valvụ bụ akụkụ dị mkpa nke valvụ ahụ dum, ebumnuche ya bụ igbochi ntanye,valvụ ahụA na-akpọkwa oche mkpuchi akara akara, ọ bụ nzukọ nke na-ejikọta ya na onye na-ahụ maka ihe na pipeline ma na-egbochi usoro ịgba ọsọ. Mgbe a na-eji valvụ ahụ eme ihe, a na-enwe mgbasa ozi dị iche iche na pipeline, dị ka mmiri mmiri, gas, mmanụ, mgbasa ozi corrosive, wdg, na akara nke valves dị iche iche na-eji ebe dị iche iche ma nwee ike ime mgbanwe dị iche iche.
TWSValvena-echetara gị na ihe nke valve akara nwere ike kewaa ụzọ abụọ, ya bụ ihe ígwè na ihe ndị na-abụghị ígwè. A na-ejikarị akara ndị na-abụghị ígwè eme ihe na pipeline na okpomọkụ na nrụgide nkịtị, ebe akara ígwè nwere ọtụtụ ngwa ngwa ma nwee ike iji ya na okpomọkụ dị elu. elu nrụgide.
Rọba sịntetịt dị mma karịa rọba eke n'ihe gbasara nguzogide mmanụ, nguzogide okpomọkụ na nguzogide corrosion. N'ozuzu, okpomọkụ na-arụ ọrụ nke rọba sịntetik bụ t≤150°C, rọba eke bụ t≤60°C, na roba na-eji maka akara nke globe valves, ọnụ ụzọ ámá valves, diaphragm valves, urukurubụba valves, ego valves, tuo valves na ndị ọzọ valves na nominal mgbali PN≤1MPa.
2. Naịlọn
Naịlọn nwere njirimara nke obere ọnụọgụ esemokwu yana ezigbo nguzogide corrosion. Naịlọn na-akasị eji maka bọl valves na globe valves na okpomọkụ t≤90°C na nrụgide n'ọnụ PN≤32MPa.
PTFE na-akasị eji maka globe valves, ọnụ ụzọ ámá valves, bọl valves, wdg na okpomọkụ t≤232°C na nrụgide n'ọnụ PN≤6.4MPa.
4. Nkedo ígwè
A na-eji ígwè nkedo eme ihe maka valvụ ọnụ ụzọ ámá, valvụ ụwa, valvụ plọg, wdg maka okpomọkụ t≤100°C, nrụgide ọnụ PN≤1.6MPa, gas na mmanụ.
5. Babbitt alloy
Babbitt alloy na-eji maka amonia globe valvụ na okpomọkụ t-70 ~ 150℃na nrụgide n'ọnụ PN≤2.5MPa.
6. ọla kọpa alloy
Ihe ndị a na-ejikarị eme ihe maka ọla kọpa alloys bụ 6-6-3 tin bronze na 58-2-2 manganese brass. Ọla kọpa alloy nwere ezigbo iyi na-eguzogide ma dabara maka mmiri na uzuoku na okpomọkụ t≤200℃na nrụgide n'ọnụ PN≤1.6MPa. A na-ejikarị ya eme ihe na valvụ ọnụ ụzọ ámá, valvụ ụwa, valvụ nlele, valvụ plọg, 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 nke mmiri, uzuoku na mmanụ ala na okpomọkụ t≤450℃na nrụgide n'ọnụ PN≤32MPa.
8. Chrome-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 dabara maka uzuoku na mgbasa ozi ndị ọzọ nwere okpomọkụ t≤600°C na nrụgide n'ọnụ PN≤6.4MPa, na-eji maka globe valves, bọl valves, wdg.
9. Nitriding ígwè
Ọkwa nchara nitriding a na-ejikarị bụ 38CrMoAlA, nke nwere ezigbo nguzogide corrosion na nguzogide ntu mgbe ọgwụgwọ carburizing gasịrị. A na-ejikarị ya na valvụ ọnụ ụzọ ámá ike na okpomọkụ t≤540℃na nrụgide n'ọnụ PN≤10MPa.
10. Na-atụ ụjọ
Boronizing ozugbo na-ahazi elu akara site na ihe nke ahụ valvụ ma ọ bụ ahụ diski, wee rụọ ọgwụgwọ elu boronizing. N'elu akara akara nwere ezigbo mgbochi iyi. Maka valvụ na-agbapụta ọdụ ọkụ.
Mgbe a na-eji valvụ ahụ eme ihe, ihe ndị a ga-elebara anya bụ ndị a:
1. Arụ ọrụ mkpuchi nke valvụ kwesịrị ịnwale iji hụ na arụmọrụ ya.
2. Lelee ma a na-ekpuchi elu nke valvụ ahụ, ma dozie ma ọ bụ dochie ya dịka ọnọdụ ahụ si dị.
Oge nzipu: Jan-04-2023
