He aha nā koi kūikawā no ke koho ʻana i ke kumu valve

Pono e koho ʻia nā mea no ka hana ʻana i nā ʻāpana valve e like me kēia mau kumu:

1. ʻO ke kaomi, ka mahana a me nāʻano o ka mea hana.

2. Ka ikaika o ka hapa a me kāna hana i loko o kakiwikāhale kūkulu.

3. ʻOi aku ka maikaʻi o ka manufacturability.

4. Inā hoʻokō ʻia nā kūlana i luna, pono ke kumu kūʻai haʻahaʻa.

Mea kumu

I ka wā o ka wehe ʻana a me ka pani ʻana o ka valve, lawe ka puʻu valve i nā ikaika o ka ʻāʻī, kaomi a me ka torsion, a pili pololei me ka mea waena.I ka manawa like, aia ka neʻe ʻana o ka frictional pili me ka packing.No laila, pono e lawa ka mea o ka pahu valve i ka mahana i kuhikuhi ʻia.ʻO ka ikaika a me ka paʻakikī o ka hopena, kahi pae o ka pale ʻana i ka corrosion a me ke kūʻē ʻana, a me ka hana maikaʻi.

ʻO nā mea hoʻohana maʻamau i hoʻohana ʻia penei.

1. Ke kila kalapona

Ke hoʻohana ʻia i loko o ka wai a me ka mīkini mahu me ka haʻahaʻa haʻahaʻa a me ka mahana wela ʻaʻole iʻoi aku ma mua o 300 ℃, hoʻohana maʻamau ʻo A5 carbon steel maʻamau.

Ke hoʻohana ʻia i loko o ka wai a me ke ʻano mahu me ke kaomi maʻamau a me ka mahana wela ʻaʻole iʻoi aku ma mua o 450 ℃, hoʻohana maʻamau ʻo 35 kiʻekiʻe kiʻekiʻe carbon steel.

2. Ke kila kila

Hoʻohana maʻamau ʻo 40Cr (chrome steel) i ka wā e hoʻohana ʻia ai no ke kaomi maʻamau a me ke kaomi kiʻekiʻe, a ʻaʻole ʻoi aku ka mahana ma mua o 450 ℃ i ka wai, ka mahu, ka ʻaila a me nā mea ʻē aʻe.

Hiki ke hoʻohana ʻia ke kila nitriding 38CrMoALA ke hoʻohana ʻia i loko o ka wai, ka mahu a me nā mea ʻē aʻe me ke kaomi kiʻekiʻe a me ka mahana wela ʻaʻole i ʻoi aku ma mua o 540 ℃.

Hoʻohana maʻamau ʻo 25Cr2MoVA chromium molybdenum vanadium steel i ka wā e hoʻohana ʻia ai i loko o ke ʻano mokuahi kiʻekiʻe me ka mahana wela ʻaʻole i ʻoi aku ma mua o 570 ℃.

ʻEkolu, kila kuhiliʻole ʻakika

Hoʻohana ʻia ia no nā mea hoʻoheheʻe ʻole a palupalu me ka puʻuwai a me ke kaomi kiʻekiʻe, a ʻaʻole ʻoi aku ka mahana ma mua o 450 ° C.Hiki ke koho ʻia ka 1Cr13, 2Cr13, 3Cr13 chromium stainless steel.

Ke hoʻohana ʻia i loko o ka media corrosive, hiki ke koho ʻia ke kila kuhili ʻakika e like me Cr17Ni2, 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Cr18Ni12Mo3Ti, a me PH15-7Mo.

ʻO ka hā, ke kila pale wela

Ke hoʻohana ʻia no nā kīwī wela kiʻekiʻe ʻaʻole i ʻoi aku ka mahana ma mua o 600 ℃, hiki ke koho ʻia ka 4Cr10Si2Mo martensitic heat-resistant steel a me 4Cr14Ni14W2Mo austenitic heat-resistant steel.