Ihe mkpuchi valvụ bụ akụkụ dị mkpa nke mkpuchi valvụ. Kedu ihe mkpuchi valvụ bụ? Anyị maara na e kewara ihe mkpuchi mgbanaka valvụ n'ime ụdị abụọ: ígwè na nke na-abụghị ígwè. Ihe na-esonụ bụ obere okwu mmalite maka ọnọdụ ojiji nke ihe mkpuchi dị iche iche, yana ụdị valvụ a na-ejikarị eme ihe.
1. Rọba sịntetik
Njirimara zuru oke nke roba sịntetik dịka iguzogide mmanụ, iguzogide okpomọkụ na iguzogide nchara ka mma karịa nke roba eke. N'ozuzu, okpomọkụ ojiji nke roba sịntetik bụ t≤150℃, okpomọkụ nke roba eke bụ t≤60℃. A na-eji roba emechie valvụ ụwa,roba nọ ọdụ ọnụ ụzọ ámá valvụ, valvụ diaphragm,rvalvụ urukurubụba nọ ọdụ ubber, rvalvụ nlele nọdụ ala ubber (valvụ nlele), valvụ ndị a na-akpọ "pink" na valvụ ndị ọzọ nwere nrụgide aha PN≤1MPa.
2. Naịlọn
Naịlọn nwere njirimara nke obere ihe mgbochi esemokwu na ezigbo iguzogide nchara. A na-ejikarị naịlọn eme ihe maka valvụ bọọlụ na valvụ ụwa nwere okpomọkụ t ≤ 90℃ na nrụgide aha PN ≤ 32MPa.
3. PTFE
A na-ejikarị PTFE eme ihe maka valvụ ụwa,valvụ ọnụ ụzọ ámá, valvụ bọọlụ, wdg. nwere okpomọkụ t≤232℃ na nrụgide aha PN≤6.4MPa.
4. Ígwè a kpụrụ akpụ
A na-eji ígwè eme ihe makavalvụ ọnụ ụzọ ámá, valvụ ụwa, valvụ plọg, wdg. maka okpomọkụ t≤100℃, nrụgide aha PN≤1.6MPa, gas na mmanụ.
5. Babbitt alloy
A na-eji Babbitt alloy eme ihe maka valvụ ammonia globe nwere okpomọkụ t-70 ~ 150℃ na nrụgide aha PN ≤2.5MPa.
6. Ihe e ji ọla kọpa mee
Ihe ndị a na-ejikarị eme ihe maka alloy ọla kọpa bụ ọla nchara tin 6-6-3 na ọla nchara manganese 58-2-2. alloy ọla kọpa nwere ezigbo ike iguzogide iyi ma dabara adaba maka mmiri na uzuoku nwere okpomọkụ t ≤200℃ na nrụgide aha PN ≤1.6MPa. A na-ejikarị ya eme ihe navalvụ ọnụ ụzọ ámá, valvụ ụwa,valvụ nlele, valvụ plọg, wdg.
7. Ígwè anaghị agba nchara chrome
A na-ejikarị ígwè chromium anaghị agba nchara eme ihe dịka 2Cr13 na 3Cr13, nke a gbanyụrụ ma mee ka ọ dị jụụ, ma nwee ezigbo ike iguzogide nchara. A na-ejikarị ya eme ihe na valvụ maka ihe ndị dị ka mmiri, uzuoku na mmanụ ala nwere okpomọkụ t ≤450℃ na nrụgide aha PN ≤32MPa.
8. Ígwè anaghị agba nchara Chromium-nickel-titanium
Ọkwa ígwè anaghị agba nchara chromium-nickel-titanium nke a na-ejikarị eme ihe bụ 1Cr18Ni9ti, nke nwere ezigbo iguzogide nchara, iguzogide mbuze na iguzogide okpomọkụ. Ọ dabara adaba maka uzuoku, nitric acid na ihe ndị ọzọ nwere okpomọkụ t≤600℃ na nrụgide aha PN≤6.4MPa, nke a na-eji maka valvụ globe, valvụ bọọlụ, wdg.
9. Ígwè Nitride
Ọkwa ígwè a na-ejikarị eme ihe bụ 38CrMoAlA, nke nwere ezigbo nguzogide nchara na nguzogide ọkọ mgbe emechara ọgwụgwọ kaburizing. A na-ejikarị ya eme ihe na valvụ ọnụ ụzọ ámá ọkụ eletrik nwere okpomọkụ t ≤ 540℃ na nrụgide aha PN ≤ 10MPa.
10. Ịtọpụ Boron
Boronizing na-arụ ọrụ ozugbo site na ihe dị n'ahụ valvụ ma ọ bụ ahụ diski, wee na-arụ ọrụ ọgwụgwọ elu boronizing, elu mkpuchi ahụ nwere ezigbo nguzogide iyi. A na-eji ya na valvụ mgbapụta ọkụ eletrik.
Oge ozi: Juun-10-2022
