Zvishandiso zvekugadzira mavharuvhu zvikamu zvinofanirwa kusarudzwa zvinoenderana nezvinotevera zvinhu:
1. Kumanikidza, tembiricha uye maitiro eiyo svikiro rekushanda.
2. Simba rechikamu uye basa rayo muvharafuchimiro.
3. Iine manufacturability zviri nani.
4. Kana mamiriro ari pamusoro apa akasangana, panofanira kuva nemutengo wakaderera.
Stem material
Munguva yekuvhura nekuvhara kwevhavha, tsinde yevhavha inotakura masimba ekumanikidzana, kumanikidza uye torsion, uye inosangana zvakananga nepakati.Panguva imwecheteyo, kune hukama hwekukakavadzana pamwe nekurongedza.Naizvozvo, iyo valve stem zvinhu inofanira kunge yakakwana pane yakatarwa tembiricha.Kusimba uye kusimba kwekukanganisa, imwe dhigirii yekuramba kwecorrosion uye kuramba kukwenya, uye yakanaka kugadzira.
Inowanzo shandiswa valve stem zvinhu zvinotevera.
1. Carbon steel
Kana ichishandiswa mumvura uye svikiro svikiro ine low pressure uye yepakati tembiricha isingapfuure 300 ℃, A5 yakajairwa kabhoni simbi inowanzoshandiswa.
Kana ichishandiswa mumvura uye chipfunga chepakati nepakati nekumanikidza uye tembiricha yepakati isingadariki 450 ℃, 35 yepamusoro-mhando kabhoni simbi inowanzoshandiswa.
2. Alloy simbi
40Cr (chrome simbi) inowanzo shandiswa kana ichishandiswa kune yepakati kudzvanywa uye yakanyanya kudzvanywa, uye tembiricha yepakati haipfuure 450 ℃ mumvura, chiutsi, peturu uye mamwe midhiya.
38CrMoALA nitriding simbi inogona kushandiswa kana ichishandiswa mumvura, chiutsi uye mamwe midhiya ine high pressure uye yepakati tembiricha isingadariki 540 ℃.
25Cr2MoVA chromium molybdenum vanadium simbi inowanzo shandiswa kana ichishandiswa mukutsikirira chipfunga chepakati nepakati tembiricha isingadariki 570 ℃.
Tatu, Stainless acid-resistant simbi
Inoshandiswa kune isingaore uye isina kusimba midhiya ine kudzvanywa kwepakati uye yakakwirira, uye tembiricha yepakati haipfuure 450 ° C.1Cr13, 2Cr13, 3Cr13 chromium simbi isina tsvina inogona kusarudzwa.
Kana ichishandiswa mukuora media, stainless acid-resistant simbi yakadai seCr17Ni2, 1Cr18Ni9Ti, Cr18Ni12Mo2Ti, Cr18Ni12Mo3Ti, uye PH15-7Mo kunaya kunoomesa simbi inogona kusarudzwa.
Chechina, simbi inodzivirira kupisa
Kana ichishandiswa kune yakakwirira-tembiricha mavharuvhu ayo epakati tembiricha isingapfuure 600 ℃, 4Cr10Si2Mo martensitic inodzivirira kupisa simbi uye 4Cr14Ni14W2Mo austenitic inodzivirira kupisa simbi inogona kusarudzwa.
Nguva yekutumira: Sep-24-2021