Raws li cov khoom sib khi ntawm cov phaj ntawm phaj kub exchanger, gasket tuaj yeem tiv thaiv cov phaj to. Qhov zoo ntawm gasket ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov khoom siv, thiab cov ntaub ntawv ntawm lub gasket tsis zoo ib yam vim kev siv sib txawv, hauv qab no peb yuav nkag siab cov yam ntxwv thiab cov xwm txheej ntawm kev siv cov khoom siv ntawm cov phaj kub exchanger gasket.
Cov khoom tseem ceeb ntawm lub gasket yog roj hmab, uas cuam tshuam los ntawm qhov kub thiab txias, thiab yog li ntawd yooj yim cuam tshuam los ntawm kev tsim, homogeneity ntawm cov khoom thiab cov xwm txheej ntawm cov txheej txheem vulcanization.
Qhov taw qhia rau kev ntsuas qhov kev tiv thaiv corrosion ntawm cov khoom yog "ib nrab corrosion kuj sib npaug PRE". Qhov no feem ntau txiav txim siab los ntawm cov ntsiab lus ntawm Cr, MO thiab Ni.
(1) 304 stainless hlau: siv nyob rau hauv cov organic thiab inorganic media, concentration<30% temperature <= 100/concentration >30% kub<50 nitric acid temperature <100 various concentrations of carbonic acid, ammonia and alcohols. 304L material is basically the same as 304 material, can be welded better and can be used as welded heat exchanger.
(2) 316L ntuj txias dej, txias ntauwd dej, softened dej, carbonic acid, acetic acid thiab caustic soda tov ntawm tsawg tshaj li 50 feem pua concentration, cawv thiab kuab tshuaj xws li acetone, dilute nitric acid (<20%) dilute phosphoric acid (<30%) of temperature less than 100 degrees, but not suitable for sulfuric acid. 316 is basically the same as it.
(3) 317 yog haum rau ntau yam kev mob tshaj 316L.
(4) AISI904L thiab SUS890L yog tus nqi zoo thiab zoo dua li tag nrho cov ntaub ntawv saum toj no. Tshwj xeeb tshaj yog haum rau dav sulfuric acid, phosphoric acid thiab halides.
(5) SMO 254 qib high-qib stainless hlau nrog nce MO cov ntsiab lus, hloov kho super stainless hlau rau 316. Zoo heev tiv thaiv chloride thiab crevice corrosion. Haum rau brine uas muaj, inorganic acids.
(6) SMO654 yog cov khoom siv zoo dua li 254 siv rau hauv dej hiav txwv txias.
(7) RS-2 (0Cr20Ni26Mo3Cu3Si2Nb) stainless hlau,
