Valvpassage-a media-te chu sealing element-in a tihbuai leh a thlunzawm, a tihbuai leh a sem darh, a then leh mixing a nih avangin sealing surface hi media-in a tichhe nasa hle a, a chhe thei a, a chhe nasa hle bawk.
Thu pawimawh tak tak:a sealing surface;corrosion;erosion;wear a ni
Sealing surface chhiat chhan pahnih a awm a, chungte chu mihring chhiatna leh natural damage te an ni. Mihring chhiatna hi design \ha lo, siam \ha lo, thil siam \ha lo, dah \ha lo, hman \ha lo, leh enkawl \ha lo vangte a ni. Natural damage chu valve hnathawh dan pangngaia a chhe lutuk a ni a, media-in sealing surface a tihchhiat leh a tihchhiat loh vang a ni.
Sealing surface a chhiat chhan chu hetiang hian a tawi zawngin kan sawi thei ang:
Sealing surface machining quality tha lo: Hei hi sealing surface-a crack, pores, leh inclusions ang chi chhiatnaah a lang tlangpui. Hei hi welding leh heat treatment standard thlan dik loh vang a ni a, welding leh heat treatment laiin hnathawh that loh vang a ni. Sealing surface-a hardness hi a sang lutuk emaw, a hniam lutuk emaw a, hei hi material thlan dik loh emaw, heat treatment dik lo vang emaw a ni. Sealing surface-a hardness inang lo leh corrosion resistance tha lo chhan ber chu welding process chhunga a hnuaia metal awm chu surface-a a puak vang a ni ber a, hei hian sealing surface-a alloy composition a ti dilute a ni. Hemi kawngah hian design chungchang pawh a awm ngei ang.
Selection dik lo leh hman dan dik lo avanga chhiatna: Hei hi select loh vangin a lang bervalve a nis hnathawh dan azirin, shut-off valve chu throttling valve atan hman a, chu chuan khar laiin pressure nasa lutuk, khar rang, emaw khar kim lo emaw a thlen a, chu chuan sealing surface-ah erosion leh wear a thlen thin. Installation dik lo leh maintenance tha lo chuan sealing surface hnathawh dan pangngai lo a thlen a, chu chuan...valve a ninatna leh sealing surface tihchhiat hmaa hnathawh tur.
Chemical corrosion of the medium: Sealing surface vel medium hian sealing surface nen chemically react in current siam lovin sealing surface chu a corrosion a ni. Electrochemical corrosion, sealing surface inkara inzawmna, sealing surface leh closing body inkara inzawmna lehvalve a nitaksa, chutiang bawkin medium-a concentration leh oxygen awm zat inang lo chuan potential danglamna a siam vek a, electrochemical corrosion a thlen a, anode-side sealing surface a tichhe bawk.
Erosion of the medium: Hei hi medium a luang chhuah laiin sealing surface a wear, erosion leh cavitation avanga lo awm a ni. Velocity engemaw takah chuan medium chhunga floating fine particles te chu sealing surface nen an insu a, local damage a thlen thin. High-speed flowing medium hian sealing surface chu direct-in a tichhia a, local damage a thlen thin. Medium chu a inhmeh a, a then a vaporize chuan bubble a puak a, sealing surface a nghawng a, local damage a thlen thin. Medium-a erosion leh chemical corrosion inzawmkhawm hian sealing surface chu nasa takin a tichhe a ni.
Mechanical damage: Sealing surface chu hawn leh khar laiin a hrual ang a, a bump ang a, a squeeze ang. Sealing surface pahnih inkar atom te chu temperature leh pressure sang tak hnuaiah an inhnim lut a, adhesion phenomenon an siam thin. Sealing surface pahnih hi an inzawm khawm chuan adhesion point chu awlsam takin a inthen darh thei a ni. Sealing surface roughness a san poh leh he phenomenon hi a awm theihna a sang zawk. Valve khar a nih chuan valve disc chuan sealing surface chu a bump ang a, a squeeze ang a, sealing surface-ah local wear emaw indentation emaw a awm ang.
Fatigue damage: Hun rei tak hman a nih chuan sealing surface chu alternating load a awm a, chu chuan hah a tichhe a, crack leh delamination a thlen thin. Rubber leh plastic hi hun rei tak hman hnuah a tar duh hle a, hei hian performance a ti tlahniam a ni. A chunga sealing surface chhiatna thlentu a chunga kan sawite thlirletna atang hian valve sealing surface quality leh service life tihchangtlun nan sealing surface material dik tak, sealing structure dik tak, leh processing methods thlan a ngai tih a hriat theih.
TWS valve hian a buaipui berrubber hmanga thut a ni a, butterfly valve a ni, Gate valve a ni, Y-strainer hmanga siam a ni, balancing valve a ni, Wafe check valve a ni, adangte.
Post hun chhung: May-13-2023
