ʻO ka ʻili o ka valve sealing surface, stem a me stem nut material description valve localization e kali ana i ka hui valve e hana i nā hana kūpono.

ʻO ka ʻili o ka valve sealing surface, stem a me stem nut material description valve localization e kali ana i ka hui valve e hana i nā hana kūpono.

ʻO ka ili hoʻopaʻa ʻana ke kī hana maka o ka valve. ʻO ka maikaʻi o kaʻili o ka sila e pili ana i ke ola lawelawe o ka valve. ʻO ka mea maʻamau, pono e noʻonoʻo ka mea e hoʻopaʻa ai i ka ʻili i ka corrosion resistance, abrasion resistance, erosion resistance, oxidation resistance a me nā mea ʻē aʻe. Hoʻopili pololei ʻia ka ʻōpala kumu i ka ikaika axial o ke kumu i ka wā o ka wehe ʻana a me ka pani ʻana o ka valve a no laila e loaʻa kahi ikaika. I ka manawa like, ua hoʻopaʻa ʻia me ke kumu, e koi ana i kahi coefficient liʻiliʻi o ka friction, ʻaʻohe ʻōpala a pale i ke ʻano o ka nahu ʻana. Pono ka Lapaʻau ʻana i ka wela no ka paʻakikī kiʻekiʻe a i ʻole ka paʻakikī o ka ʻili.
Mea hoʻopaʻa ʻili
ʻO ka ili hoʻopaʻa ʻana ke kī hana maka o ka valve. ʻO ka maikaʻi o kaʻili o ka sila e pili ana i ke ola lawelawe o ka valve. ʻO ka mea maʻamau, pono e noʻonoʻo ka mea e hoʻopaʻa ai i ka ʻili i ka corrosion resistance, abrasion resistance, erosion resistance, oxidation resistance a me nā mea ʻē aʻe.
ʻElua mau māhele nui:
(1) Mea palupalu
1, pulupulu (me ka pulupulu butadiene, pulupulu fluorine, etc.)
2, plastic (PTFE, nylon, etc.)
(2) mea hoopaa paa
1, keleawe keleawe (no ka haʻahaʻa kaomi valve)
2, chromium stainless steel (no ke kiʻekiʻe kiʻekiʻe valve)
3, Sitai alloy (no ka wela kiʻekiʻe a me ke kiʻekiʻe puʻe kiʻekiʻe a me ka ikaika corrosion kiwikā)
4. Pahu nikela kumu (no ka pāpaʻi corrosive)
Mea kumu
Hoʻopili ʻia ke kumu i ka huki ʻana, kaomi a me nā ikaika torsional i ka wā o ka wehe ʻana a me ka pani ʻana o ka valve, a pili pololei ʻo ia me ka waena oiai
Aia kekahi neʻe ʻana o ka FRICTION ma waena a me ka hoʻopaʻa ʻana, no laila pono e loaʻa i ke kumu kumu ka ikaika a me ka hopena i nā mahana i koho ʻia.
ʻO ka paʻakikī, ka pale ʻana i ka corrosion a me ke kūpaʻa abrasion, a me ka ʻenehana maikaʻi.
Penei nā mea kumu maʻamau.
ʻO ka mua, ke kila kalapona
Ke hoʻohana ʻia i loko o ka wai a me ke ʻano mahu me ka haʻahaʻa haʻahaʻa a me ka mahana wela ʻaʻole i ʻoi aku ma mua o 300 ℃, koho maʻamau ʻo A5 carbon steel maʻamau.
ʻAʻole ʻoi aku ka nui o ka wai ma mua o ka 450 ℃ wai, ka mīkini mahu, koho maʻamau i ke kila kalapona maikaʻi 35.
ʻElua, hao hao
No ke kaomi maʻamau a me ke kaomi kiʻekiʻe, ʻaʻole ʻoi aku ka mahana ma mua o 450 ℃ ka wai, ka mahu, ka aila a me nā media ʻē aʻe, koho maʻamau ʻo 40Cr (chromium steel).
No ke kiʻekiʻe kiʻekiʻe, ʻaʻole i ʻoi aku ka mahana ma mua o 540 ℃ ka wai, ka mahu a me nā media ʻē aʻe, hiki ke koho iā 38CrMo>
No ke kaomi kiʻekiʻe, ʻaʻole ʻoi aku ka mahana o ka wela ma mua o 570 ℃, koho maʻamau ʻo 25Cr2MoVA chromium molybdenum vanadium steel.
ʻEkolu, kila ʻakika kuhiliʻole
No ka puʻe haʻahaʻa a me ke kaomi kiʻekiʻe, ʻaʻole i ʻoi aku ka mahana ma mua o 450 ℃ ʻaʻole corrosive medium a nāwaliwali corrosive medium, hiki ke koho 1Cr13, 2Cr13, 3Cr13 chromium stainless steel. No nā media corrosive, Cr17Ni2, 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Cr18Ni12Mo3Ti a me nā mea kila ʻē aʻe a me nā kila paʻakikī paʻakikī o ka ua hiki ke koho ʻia.
ʻEhā, kila pale wela
4Cr10Si2Mo Martensite ʻano ʻano kila wela a me ke kila hiki ke hoʻohana ʻia inā ʻaʻole ʻoi aku ka mahana ma mua o 600 ℃
4Cr14Ni14W2Mo Austenitic ʻano kila pale wela.
Mea ʻano kumu lāʻau
Hoʻopili pololei ʻia ka ʻōpala kumu i ka ikaika axial o ke kumu i ka wā o ka wehe ʻana a me ka pani ʻana o ka valve a no laila e loaʻa kahi ikaika. I ka manawa like, ua hoʻopaʻa ʻia me ke kumu, e koi ana i kahi coefficient liʻiliʻi o ka friction, ʻaʻohe ʻōpala a pale i ke ʻano o ka nahu ʻana.
ʻO ka mea mua, ke keleawe keleawe
He liʻiliʻi ka coefficient friction copper, ʻaʻohe ʻōpala, ʻo ia kekahi o nā mea maʻamau i hoʻohana ʻia. No ka PG1.6mpa haʻahaʻa kaomi kiwi ZHMN58-2-2 hoolei keleawe hiki ke hoʻohana. No ka PG16-6.4mpa hiki ke hoʻohana i ka pahu kaomi maʻamau ZQ>
ʻO ka lua, ke kila
Ke ʻae ʻole nā ​​kūlana hana i ka hoʻohana ʻana i ke keleawe keleawe, hiki ke koho i ka 35, 40 ke kila kalapona maikaʻi, 2Cr13, 1Cr18Ni9, Cr17Ni2 a me nā mea kila kila kila.
ʻAʻole ʻae ʻia nā kūlana hana e kuhikuhi i kēia mau mea.
1, no ka uwila kiwi, valve stem nut me melon clutch, pono e mālama ʻia ka wela e loaʻa ai ka paʻakikī kiʻekiʻe a i ʻole ka paʻakikī o ka ʻili.
2, ʻaʻole kūpono ke ʻano hana a i ʻole ka puni ʻana no ke koho ʻana i ke keleawe keleawe, e like me ka corrosion keleawe o ka ammonia medium. Ke koho ʻana i nā nati kumu kila, pono ke nānā pono i ke ʻano o ka nahu o ke kaula.
ʻO nā makahiki e hiki mai ana ʻo ia ka manawa haʻalulu kiʻekiʻe o ka ʻoihana valve, ʻo ka hopena pololei o kēia haʻalulu kiʻekiʻe ke ʻano o kēia manawa o ka polarization i loko o ka pahu pahu pahu pahu hoʻomoana e hoʻonui.
Ua manaʻo ʻia i loko o nā makahiki e hiki mai ana hiki ke ola maoli i ka mākeke valve ʻoihana ʻaʻole nui loa.
Akā ʻo ka ʻoihana valve kēia haʻalulu kiʻekiʻe e lawe mai i nā manawa kūpono, nā hopena haʻalulu e hoʻonui i ka hana mākeke.