Ntxiv rau cov dej, feem ntau ntawm cov media siv hauv cov phaj hluav taws xob kub, sulium cov tshuaj, uas yooj yim los ua kom corrosion ntawm phaj thiab o thiab laus ntawm gasket.
Phaj thiab gasket yog cov ntsiab lus tseem ceeb ntawm phaj kub hloov pauv, yog li xaiv ntawm phaj thiab gasket cov khoom yog tshwj xeeb yog qhov tshwj xeeb.
Cov Khoom Siv Phaj Xaiv Ntawm Cov Phaj Tshav Txiaj Ntsig:
| Lim dej, dej ntws dej, cov roj tau nyeem, roj ntxhia thiab lwm yam xov xwm | Stainless hlau (AISI 304, AISI 316, thiab lwm yam). |
| dej hiav txwv, brine, salinization thiab lwm yam tshaj tawm | Titanium thiab Titanium Palladium (Ti, Ti-Pd) |
| Dilute sulfuric acid, dilute sulphur ntsev aqueous daws, inorganic aqueous daws thiab lwm yam xov xwm | 20Cri, 18Ni, 6mo (254smo) thiab lwm yam alloys |
| Kev kub siab thiab kub concentration caustic dej qab zib | Ni |
| Mloog cov sulfuric acid, hydrochloric acid thiab phosphoric acid nruab nrab | Hastelloy alloy (C276, D205, B20) |
Cov khoom siv xaiv ntawm gasket rau phaj kub hloov:
Cov neeg feem coob paub tias cov roj hmab sib dhos yog cov khoom siv uas siv tau, xws li EPDM, Hydrogenated Nitrile Roj Hmab, Fluororubber thiab lwm yam.
| Epdm | Qhov kev pabcuam kub yog - 25 ~ 180 ℃. Nws yog qhov tsim nyog rau dej nruab nrab superheated dej, chav, tsis muaj kua qaub raws, cov roj av tsis muaj zog, KeTone, Cawv, Ester, thiab lwm yam. |
| Leeg | Qhov kev pabcuam kub yog - 15 ~ 130 ℃. Nws yog qhov haum rau ntau yam ntxhia roj xws li cov roj hauv nruab nrab, cov roj lubricating roj, tsiaj thiab dej kub, thiab lwm yam. |
| Dai txog HNBR | Qhov kev pabcuam kub yog - 15 ~ 160 ℃. Nws yog qhov haum rau kua dej nruab nrab kub-kub, sulfur roj, cov roj av, cov pa hluav taws xob tshiab R134A thiab OZone. |
| Fkm | Qhov kev pabcuam kub yog - 15 ~ 200 ℃. Nws yog qhov haum rau kua nruab nrab, xws li cov roj sulfuric, ncu roj, dej sov, dej sov, tshuaj chlorine, piv txwv li lwm yam. |
Lub Sijhawm Post: Sep-16-2021