He aha nā hiʻohiʻona o ka ʻili o ka valve sealing surface material?

Hoʻopili pinepine ʻia ka ʻili hoʻopaʻa ʻana o ka valve, ʻino a hoʻopaʻa ʻia e ka mea waena, no laila he ʻāpana maʻalahi ia ma ka valve.E like me ka pneumatic ball valve a me ka uila butterfly valve a me nā ʻāpana ʻokoʻa ʻē aʻe, ma muli o ka wehe pinepine a me ka wikiwiki o ka wehe ʻana a me ka pani ʻana, pili pono ko lākou maikaʻi a me ke ola lawelawe.ʻO ke koi kumu o ka valve sealing surface e hiki i ka valve ke hōʻoia i ka hoʻopaʻa palekana a hilinaʻi ma lalo o nā kūlana hana i kuhikuhi ʻia.No laila, pono e loaʻa i nā mea o ka ʻili nā hiʻohiʻona penei:

(1) ʻO ka hana hoʻopaʻa ʻana maikaʻi, ʻo ia hoʻi, hiki i ka ʻili o ka sila ke pale i ka leakage o ka waena;

(2) Loaʻa kekahi ikaika, hiki i ka ili hoʻopaʻa ke kū i ke koʻikoʻi koʻikoʻi o ka hoʻopaʻa ʻana i hoʻokumu ʻia e ka ʻokoʻa puʻe waena;

(3) ʻO ke kūpaʻa ʻana o ka corrosion, ma lalo o ka lawelawe lōʻihi o ka corrosive medium a me ke koʻikoʻi, ʻo ka ʻili o ka sila e loaʻa i ka pale corrosion ikaika i kūpono me nā koi hoʻolālā;

(4) ʻO ka hiki ke pale aku i nā ʻōpala, ʻo ka hoʻopaʻa ʻana o ka valve he mau hōʻailona ikaika, a aia ka friction ma waena o ka sila i ka wā o ka wehe ʻana a me ka pani ʻana;

(5) Erosion resistance, hiki i ka ili hoʻopaʻa ke pale aku i ka erosion o ka media kiʻekiʻe a me ka hui ʻana o nā ʻāpana paʻa;

(6) Maikaʻi thermal kūpaʻa, ka ili sila i lawa ka ikaika a me ka oxidation kū'ē i ke kiʻekiʻe wela, a me ka maikai anu brittle kū'ē ma haʻahaʻa wela;

(7) Ka hana hoʻoponopono maikaʻi, maʻalahi e hana a mālama, hoʻohana ʻia ka valve ma ke ʻano he kumu nui, a ua hōʻoia ʻia e loaʻa ka waiwai waiwai.

ʻO nā kūlana hoʻohana a me nā loina koho o ka valve sealing surface material.Hoʻokaʻawale ʻia nā mea ʻili o ka sila i ʻelua mau ʻāpana: metala a me ka non-metal.ʻO nā kūlana kūpono o nā mea hoʻohana maʻamau penei:

(1) Lapa.Hoʻohana maʻamau ia no ke ʻano hoʻopaʻa ʻana o nā ʻīpuka haʻahaʻa haʻahaʻa haʻahaʻa i hoʻopaʻa ʻia, nā kīwaha diaphragm, nā kiwi lele, nā kiwi a me nā kiwi ʻē aʻe.

(2) Palaki.ʻO nā plastics i hoʻohana ʻia no ka hoʻopaʻa ʻana i ka ʻili he nylon a me ka PTFE, nona nā ʻano o ke kūpaʻa corrosion maikaʻi a me ka liʻiliʻi friction coefficient.

(3) Babbitt.ʻIke ʻia hoʻi ʻo ka bearing alloy, maikaʻi ke kūpaʻa corrosion a me ka hiki ke holo maikaʻi.He kūpono ia no ka ili hoʻopaʻa ʻana o ka valve pani ʻia no ka amonia me ka haʻahaʻa haʻahaʻa a me ka mahana o -70-150 ℃.

(4) Kelepona keleawe.Loaʻa iā ia ka pale ʻaʻahu maikaʻi a me kekahi pale wela.He kūpono ia no ka pōpuni honua, ka pahu puka hao a me ka valve check, a me nā mea ʻē aʻe.

(5) Ke kila kila kila Chrome-nickel.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi, ke kūpaʻa erosion a me ka pale wela.He kūpono no ka media e like me ka vapor nitric acid.

(6) Ke kila kila kila.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi a hoʻohana mau ʻia i nā valve me ke kaomi kiʻekiʻe a me ka mahana ʻaʻole kiʻekiʻe ma mua o 450 ℃ no ka aila, ka wai wai a me nā mea ʻē aʻe.

(7) Ke kila chromium kiʻekiʻe.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi a me ka hana paʻakikī o ka hana, a kūpono no ke kaomi kiʻekiʻe, ka aila wela kiʻekiʻe, ka mahu a me nā media ʻē aʻe.

(8) Ke kila Nitrided.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi a me ka pale ʻana i ka ʻōpala, a hoʻohana mau ʻia i nā ʻīpuka puka makani wela.Hiki ke koho ʻia kēia mea no ka pōʻai o nā kiwi pōpō paʻa paʻa.

(9) Carbide.Loaʻa iā ia nā waiwai piha maikaʻi e like me ke kūpaʻa corrosion, erosion resistance a me ka scratch resistance, a he lōʻihi kona ola lawelawe.He mea hoʻopaʻa sila kūpono.Hoʻohana maʻamau ʻia ka tungsten drill alloy a me ka drill base alloy surfacing electrodes, etc., hiki ke hana i ka puʻe kiʻekiʻe kiʻekiʻe, kiʻekiʻe kiʻekiʻe wela sealing surface, kūpono no ka aila, aila, kinoea, hydrogen a me nā mea ʻē aʻe.

(10) E kāpīpī i nā mea hoʻoheheʻe ʻia.Loaʻa nā mea hoʻoheheʻe cobalt-based, nickel-based alloys, a me nā ʻūhā i hoʻopaʻa ʻia i ka chin, i loaʻa i ka pale corrosion maikaʻi a me ke kūpaʻa ʻana.

I mea e hōʻoia ai i ka palekana a me ka hilinaʻi o ka sila valve, pono e hoʻoholo ʻia ka mea i koho ʻia e like me nā kūlana hana kikoʻī.Inā ʻoi loa ka corrosive o ka medium, i ke koho ʻana i nā mea, pono ia e hoʻokō i ka hana corrosive ma mua, a laila e hoʻokō i nā koi o nā waiwai ʻē aʻe;Pono e hoʻolohe ka sila o ka ʻīpuka puka i ke kūpaʻa maikaʻi ʻana;ʻO nā kiwi palekana, nā kīʻaha throttle a me ka valve hoʻoponopono e maʻalahi loa e hoʻopau ʻia e ka mea waena, a pono e koho ʻia nā mea me ke kūpaʻa maikaʻi;No ka mea i hoʻopili ʻia o ke apo sealing a me ke kino, pono e noʻonoʻo ʻia nā mea me ka paʻakikī kiʻekiʻe e like me ka ʻili o ka sila;Pono e koho nā valve maʻamau me ka haʻahaʻa haʻahaʻa a me ke kaomi i ka lāʻau a me ka plastic me ka hana hoʻopaʻa maikaʻi e like me ke sila ʻana;Ke kohoʻana i ka mea hoʻopaʻa, pono e hoʻomaopopoʻia heʻoi aku ka kiʻekiʻe o ka paʻakikī o kaʻili o ka noho valve ma mua o ka mea hoʻopaʻa o ka disc valve.