Kedu ihe mkpuchi a na-ejikarị eme valvụ?

E nwere ọtụtụ ụdị valvụ, mana ọrụ bụ isi bụ otu ihe ahụ, ya bụ, ijikọ ma ọ bụ ibelata mmiri na-asọfe. Ya mere, nsogbu mkpuchi nke valvụ ahụ pụtara ìhè nke ukwuu.

Iji hụ na valvụ ahụ nwere ike ibelata mmiri na-asọfe nke ọma n'enweghị mmiri na-agbapụta, ọ dị mkpa ijide n'aka na mkpuchi valvụ ahụ adịghị emebi emebi. E nwere ọtụtụ ihe kpatara mmiri na-agbapụta valvụ, gụnyere nhazi ihe owuwu na-enweghị isi, elu kọntaktị mkpuchi nwere nkwarụ, akụkụ ndị na-ejikọ ọnụ na-adịghị mma, njikọ dị n'etiti ahụ valvụ na bonnet, wdg. Nsogbu ndị a niile nwere ike ibute mkpuchi na-adịghị mma nke valvụ ahụ. Nke a na-eme ka nsogbu mmiri na-agbapụta. Ya mere, teknụzụ mkpuchi valvụ bụ teknụzụ dị mkpa metụtara arụmọrụ na ịdị mma nke valvụ, ọ chọkwara nyocha usoro na nke miri emi.

Ihe mkpuchi a na-ejikarị eme ihe maka valvụ gụnyere ụdị ndị a:

1. NBR

Ọ na-eguzogide mmanụ nke ọma, ọ na-eguzogide oke iyi, ọ na-eguzogide okpomọkụ nke ọma, ọ na-ejikọkwa nke ọma. Ihe ndị na-adịghị mma ya bụ obere okpomọkụ na-eguzogide, ọ na-eguzogide ozone nke ọma, ọ na-anaghị eguzogide ọkụ eletrik nke ọma, ọ na-enwekwa obere ike ịgbanwe agbanwe.

2. EPDM

Ihe kacha mkpa na EPDM bụ oke iguzogide oxidation, iguzogide ozone na iguzogide corrosion. Ebe ọ bụ na EPDM bụ nke ezinụlọ polyolefin, o nwere ezigbo njirimara vulcanization.

3. PTFE

PTFE nwere ike iguzogide kemịkalụ siri ike, iguzogide ọtụtụ mmanụ na ihe mgbaze (ma e wezụga ketones na esters), ezigbo iguzogide ihu igwe na iguzogide ozone, mana ọ naghị anabata oyi nke ọma.

4. Ígwè a kpụrụ akpụ

Rịba ama: A na-eji ígwè a kpụkọrọ akpụkọ eme ihe maka mmiri, gas na mmanụ ọkụ, yana okpomọkụ nke≤100°C na nrụgide aha nke≤1.6mpa.

5. Ihe e ji nickel mee

Rịba ama: A na-eji alloys dabere na nickel eme ihe maka ọkpọkọ mmiri nwere okpomọkụ nke -70~150°C na PN nrụgide injinia≤20.5mpa.

6. Ihe e ji ọla kọpa mee

Alloy ọla kọpa nwere ezigbo nguzogide iyi ma dabara adaba maka mmiri na ọkpọkọ uzuoku nwere okpomọkụ≤200℃na nrụgide aha PN≤1.6mpa.