Ukusetyenziswa kwephepha lerabha ye-asbestos kumzi-mveliso wokutywina wevalve kunezi nzuzo zilandelayo:

Ixabiso eliphantsi: Xa kuthelekiswa nezinye izinto zokutywina ezisebenza kakhulu, ixabiso lephepha lerabha ye-asbestos lifikeleleka ngakumbi.

Ukumelana nemichiza: Ishiti lerabha ye-asbestos inokumelana nokugqwala okulungileyo kwindawo ethile eneempawu zekhemikhali ezithambileyo, ezinokuhlangabezana neemfuno zeemeko zokusebenza ngokubanzi.

Ukugcinwa okulula: Ngenxa yokuba i-rubber sheet ye-asbestos kulula ukuyiqhuba kunye nokutshintshwa, ikulungele ngakumbi ukugcinwa kwevalve.

Ingxaki enkulu yephepha le-rubber ye-asbestos kukuba nangona izinto ze-gasket zongezwa nge-rubber kunye nezinye iifayili, azikwazi ukuzalisa ngokupheleleyo ama-pores amancinci adibanisa, kwaye kukho ukungena kokungena. Ngoko ke, kwindawo engcolisa kakhulu, nokuba uxinzelelo kunye nobushushu abukho phezulu, azinakusetyenziswa. Xa isetyenziswe kwimidiya ye-oyile yobushushu obuphezulu, ngokuqhelekileyo kwixesha elizayo lokusetyenziswa, ngenxa ye-carbonization ye-rubber kunye ne-filler, amandla ayancipha, izinto eziphathekayo ziyakhululeka, kwaye kukho ukungena kwi-interface kunye nangaphakathi kwe-gasket, kwaye kukho ukupheka kunye nomsi. Ukongezelela, i-rubber sheet ye-asbestos iboshwe ngokulula kwindawo yokutywinwa kwe-flange kwiqondo lokushisa eliphezulu, elizisa inkathazo enkulu ekutshintsheni i-gasket.

Kwimeko eshushu, uxinzelelo lwe-gasket kumajelo ahlukeneyo luxhomekeke kumlinganiselo wokugcinwa kwamandla we-gasket material. Kukho amanzi ekristale kunye ne-adsorbed yamanzi kwi-asbestos fiber material. Kwi-110 ℃, i-2/3 yamanzi e-adsorbed phakathi kwe-fibers iye yagqithiswa, kwaye amandla okuqina eefayili ancitshiswa malunga ne-10%. Kwi-368℃, onke amanzi e-adsorbed aphuma ngaphandle, kwaye amandla okuqina efayibha ancitshiswa malunga ne-20%. Ngaphezulu kwe-500 ℃, amanzi ekristale aqala ukuna, kwaye amandla aphantsi.

Iphepha lerabha le-asbestos liqulethe i-ion ye-chloride kunye ne-sulfide, kulula ukwenza iiseli ze-galvanic ze-corrosion ezine-flange zensimbi emva kokufunxa kwamanzi, ngakumbi umxholo wesulfure wephepha lerabha le-asbestos elimelana neoli liphindwe kaninzi kunephepha lerabha ye-asbestos eqhelekileyo, ngoko ayifanelekanga. ukusetyenziswa kwimidiya non-oyile. I-Gaskets iya kudumba kwi-oyile kunye ne-solvent media, kodwa ngaphakathi koluhlu oluthile, akukho mpembelelo ekusebenzeni kokutywinwa.

Nangona kunjalo, kubalulekile ukuqaphela ukuba i-asbestos ichongiwe njengento enobungozi, kwaye ukusetyenziswa kwamaphepha erubha ye-asbestos kunokubonisa ingozi enokubakho kwimpilo kunye nokusingqongileyo.