Ebintu by‘okukingaho valvu n‘ekicweka kikuru ky‘okukingaho valvu. Ni bintu ki ebirikukingaho valvu? Nitumanya ngu ebintu by’okukingaho empeta za valve nibibaganisibwamu emiringo ebiri: eby’ekyoma n’ebitari by’ekyoma. Ebi ahaifo n‘enyanjura ngufu aha mbeera z‘okukoresa ebintu bitari bimwe na bimwe eby‘okukinga, hamwe n‘ebika bya valvu ebirikukoresibwa munonga.
1. Orubaare orukozirwe abantu
Ebintu byona ebiri omu mipiira y’obuhangwa nk’okuzibira amajuta, okuzibira obutagatsi n’okuzibira okusheenya nibikira eby’emipiira y’obuhangwa. Okutwarira hamwe, obutagatsi bw’okukoresa emipiira y’obuhangwa ni t≤150°C, kandi obutagatsi bw’emipiira y’obuhangwa ni t≤60°C.Emipiira neekoresibwa kukingaho globe valves, .valvu y'omuryango eshutami omu rubaaho, ebipimo by’omubiri,rubber eshutami ekihuguhugu valvu, rubber ashutami kukyebera valvu (kyebera za valvu), ebipimo by‘okunyiganyiga n‘ebindi bipimo ebiine omuhimbo gw‘eiziina PN≤1MPa.
2. Nayiloni
Nylon eine obumanyiso bw’okuteerana okukye n’okuzibira gye okusheenya. Nylon neekira kukozesebwa omu bikwato by’omupiira n’ebikwato by’ensi ebiine obutagatsi t≤90°C n’oburemeezi bw’eiziina PN≤32MPa.
3. PTFE
PTFE neekira kukozesebwa aha bikwatiraine n’okuteera ebishushani by’ensi,za valvu z'omuryango, ebikwato by’omupiira, n’ebindi ebiine obutagatsi t≤232°C n’omuhimbo gw’eiziina PN≤6.4MPa.
4. Ekyoma ekicukire
Ekyoma ekirikucumitwa nikikoresibwavalvu y'omuryango, valvu ya globe, valvu ya plug, n’ebindi ahabw’obutagatsi t≤100°C, puresha y’eiziina PN≤1.6MPa, gaasi n’amajuta.
5. Ekirungo kya Babbitt
Babbitt alloy neekoresibwa omu valvu y’ensi y’amaizi g’omugyera erimu obutagatsi t-70~150°C n’omuhimbo gw’eiziina PN≤2.5MPa.
6. Omuringa gw'omuringa
Ebintu ebirikukira kukozesebwa omu kuteerana kw’omuringa n’omuringa gw’etini 6-6-3 n’omuringa gwa manganese 58-2-2. Copper alloy eine obutafaari burungi bw’okuzibira okujwara kandi neekora gye omu maizi n’omuriro n’obutagatsi t≤200°C n’obutagatsi bw’eiziina PN≤1.6MPa. Nikikira kukozesebwa omu .za valvu z'omuryango, ebipimo by'ensi,kyebera za valvu, ebikwato by’okutaho, n’ebindi.
7. Chrome ekyoma ekitarikukyereba
Emiringo y’ekyoma ekirikukoresibwa munonga ekya chromium stainless steel ni 2Cr13 na 3Cr13, ezizimiire kandi ziine obutagatsi, kandi ziine obushoboorozi burungi bw’okuzibira okusheenya. Nikikira kukozesebwa omu valvu z‘eby‘amakuru nk‘amaizi, omuyaga n‘amajuta n‘obutagatsi t≤450°C n‘omuhimbo gw‘eiziina PN≤32MPa.
8. Ekyoma ekitarikukyereba
Omuringo gw’ekyoma ekirikukoresibwa munonga ekya chromium-nickel-titanium ni 1Cr18Ni9ti, ekiine obushoboorozi burungi bw’okuzibira okusheenya, okuzibira okusheenya n’okuzibira obutagatsi. Nikibaasa kukoresibwa omu nfuuzi, nitric acid n’ebindi bihingwa ebiine obutagatsi t≤600°C n’omuhimbo gw’eiziina PN≤6.4MPa, ebirikukoresibwa omu nkora ya globe valve, valvu y’omupiira, n’ebindi.
9. Ekyoma ekirimu nitride
Omuringo gw’ekyoma ekirikukoresibwa munonga nitrided ni 38CrMoAlA, ekiine obutafaari burungi bw’okuzibira okusheenya n’okuzibira okushara bwanyima y’okukikozesa carburizing. Ekirikukoresibwa munonga omu valvu y‘omuryango gw‘amashanyarazi n‘obutagatsi t≤540°C n‘omuhimbo gw‘eiziina PN≤10MPa.
10. Okukoresa boroni
Boronizing neekora butoosha aha rubaju rw’okukingaho kuruga omu kintu ky’omubiri gwa valve nari omubiri gwa disiki, reero bwanyima ekore okujanjaba aha rubaju rwa boronizing, aha rubaju rw’okukingaho rurimu obutafaari burungi bw’okuzibira okujwara. Nikikozesibwa omu valvu y’okufuka amashanyarazi.
Obwire bw'okuhandiika: Okwamukaaga-10-2022
