Corrosion hi a thlentu pawimawh tak pakhat a nibutterfly valve a ni tichhia. Chhungbutterfly valve a ni venhimna, .butterfly valve a ni corrosion protection hi ngaihtuah tur pawimawh tak a ni. Metal tan chuanbutterfly valve a nis, surface coating treatment hi a man tlawm ber a ni.
A chanvo tur chuthirbutterfly valve a ni surface coating a ni
01. Shielding tih a ni
Metal surface chu paint hmanga khuh hnuah chuan metal surface chu environment atanga inhlat deuh a ni. He venhimna hi shielding effect tia sawi theih a ni. Mahse hriat tur chu paint layer te tak te hian absolute shielding role a play thei lo. Polymer sang tak hian air permeability engemaw zat a neih avangin, a coating chu a thim hle a nih chuan a structural pores te hian tui leh oxygen molecule te chu zalen takin a kal thei a ni. Soft-sealed a nibutterfly valve a nis hian a chunglama epoxy coating thickness chungchangah thil tih khauh tak an nei a. Coating tam takah chuan a hlutna chu uncoated steel surface aiin a sang zawk tih hmuh theih a ni. Coating-a impermeability tihchangtlun nan anti-corrosion coating-ah hian film siamtu thil, air permeability hniam tak leh solid filler shielding property lian tak nei hman tur a ni a, chutih rual chuan coating layer awm zat pawh tihpun a ngai a, chutiang chuan coating chu a thickness engemaw zat a thlen theih nan leh dense leh non-porous a nih theih nan a ni.
02. Corrosion tihkhawtlai theihna
Coating chhunga thil awmte chu metal nena an inrem chuan metal chunglam chu passivated emaw, coating venhimna effect tihchangtlun nan venhimna thil siam emaw a ni.butterfly valve a nisthil mamawh bik atana hman tur chuan paint composition ngaihven tur a ni a, chu chuan nghawng tha lo lian tak a neih loh nan. Chu bakah, cast steelbutterfly valve a ni oil pipeline-a hman thin, oil thenkhat hnathawh avanga degradation products lo chhuak leh metal soap-te drying action te hian organic corrosion inhibitor hna a thawk thei bawk.
03. Electrochemical hmanga invenna
Film hnuaia electrochemical corrosion hi dielectric permeable coating chu metal surface nena a inzawm chuan a thleng thin. Iron aiin activity sang zawk nei metal te chu coating-ah filler atan hmang la, zinc ang chi te hi. Sacrificial anode venhimna hna a thawk ang a, zinc atanga corrosion products te chu basic zinc chloride leh zinc carbonate te an ni a, hei hian membrane gap chu a luah khat ang a, membrane chu a tight ang a, hei hian corrosion nasa takin a ti tlem a, service life a ti rei bawkbutterfly valve a ni.
Metal siamna atana hman tlanglawn tak coatingsbutterfly valve a nis
01 a ni.butterfly valve a ni taksaah epoxy resin hmanga khuh a ni
A hnuaia mizia te hi a nei a ni:
Corrosion laka inven theihna
Epoxy-coated steel bars hian corrosion resistance tha tak a nei a, concrete nena bond strength pawh nasa takin a tlahniam bawk. Industrial condition-ah chuan boruak lum emaw, aggressive media-ah emaw a tha hle.
adhesion chak tak a ni
Epoxy resins molecular chain-a awm polar hydroxyl leh ether bonds a awm avangin thil hrang hrangah a innghat nasa hle. Epoxy resin hian curing laiin shrinkage a nei tlem hle a, a chhunga stress lo awm chu a tlem a, a protective surface coating pawh a tlakchhiat leh a chhiat awlsam lo hle.
Electric lama thil awm dan
Cured epoxy resin system hi insulating material tha tak a ni a, dielectric property sang tak a nei a, surface leakage resistance leh arc resistance a nei bawk.
Mold a do thei bawk
Cured epoxy system hi mold tam zawk lakah a do thei a, tropical condition khirh takah pawh hman theih a ni.
02 a ni.butterfly valve a ni plate nylon plate hmanga siam a ni
Nylon sheet hi a chhe thei hle a, tui, leilung, ei tur, leh desalination-ah te pawh hlawhtling takin hman a ni tawh.
pawn lama sex hmanpui
Nylon board coating hian salt spray test a paltlang thei a, kum 25 chuang tuifinriat tuiah a inhnim hnuah pawh coating hi a peel off lo a, chuvangin metal parts-ah corrosion a awm lo.
abrasion laka inven theihna
Damage resistance tha tak a nei.
impact laka inven theihna
Natna nasa tak hnuaiah a peeling tih hriat tur a awm lo.
Post hun chhung: Nov-24-2022
