Zvinoenderana nekuferefeta nekuongorora, ngura ndechimwe chezvinhu zvakakosha zvinokonzeresa kukuvadzwa kwemavharuvhu e butterfly.Nekuti mhango yemukati yakabatana nepakati, ine ngura zvakanyanya.Mushure mekuora, iyo dhayamita yevhavha inova diki uye kuyerera kwekudzivirira kunowedzera, izvo zvinokanganisa kutapurirana kwepakati.Pamusoro pemuviri wevharuvhu inonyanya kuiswa pasi kana pasi pevhu.Nzvimbo yacho inosangana nemhepo uye mhepo ine unyoro, saka inowanzoitika kuita ngura.Chigaro chevharuvhu chakavharwa zvachose apo iyo yemukati mhango inosangana nepakati.Naizvozvo, iyo yekuvharisa kwepamusoro kurapwa kwemuviri wevharuvhu uye ndiro yevhavha ndiyo inodhura-inoshanda nzira yekudzivirira kubva mukuora munzvimbo yekunze.
1. Basa revharuvhu yevharuvhu pamusoro pekuputira
01. Valve body material identification
Muvara wepamusoro wepamusoro unoshandiswa kune unmachined surfaces yemuviri wevhavha uye bonnet.Kuburikidza nemucherechedzo uyu wemavara, tinogona kukurumidza kuona zvinhu zvemuviri wevhavha uye kunzwisisa zviri nani maitiro ayo.
| Valve Body Material | Paint Color | Valve Body Material | Paint Color |
| Simbi | Nhema | Ductile Iron | Bhuruu |
| Forged Steel | Nhema | WCB | Gireyi |
02. Shielding effect
Mushure mokunge muviri wevhavha wakaputirwa nependi, iyo valve body surface inenge yakaparadzaniswa kubva kune zvakatipoteredza.Izvi zvinodzivirira zvinogona kunzi shielding effect.Zvisinei, inofanira kutaurwa kuti pende yakatetepa haigoni kupa mhedziso yekudzivirira.Nekuti mapolymer ane imwe nhanho yekufema, kana iyo yekupfekedza yanyanya kutetepa, ma pores ekuumbwa anobvumira mvura neokisijeni mamorekuru kupfuura zvakasununguka.Mavharuvhu akapfava-ekuvharisa ane zvakaomesesa zvinodikanwa pane ukobvu hweepoxy resin coating pamusoro.Kuti uvandudze kusapindirana kwechifukidzo, anti-corrosion coatings inofanira kushandisa firimu-inogadzira zvinhu nemhepo yakaderera permeability uye yakasimba mazadza ane yakakwirira shielding properties.Panguva imwecheteyo, nhamba yezvipfeko zvekuputira inofanira kuwedzerwa kuitira kuti kuvhara kunosvika kune imwe hupamhi uye yakaoma uye isina-porous.
03.Corrosion inhibition
Zvikamu zvemukati zvependi zvinosangana nesimbi kuti zvipfuure pasi pesimbi kana kuburitsa zvinhu zvinodzivirira kuti zvivandudze mhedzisiro yekudzivirira.Kune mavharuvhu ane zvakakosha zvinodiwa, unofanirwa kutarisisa kuumbwa kwepende kuti udzivise mhedzisiro yakaipa.Pamusoro pezvo, mavharuvhu esimbi anokandwa anoshandiswa mumapombi emafuta anogona zvakare kuita se organic corrosion inhibitors nekuda kwekusvibisa zvigadzirwa zvinogadzirwa pasi pekuita kwemamwe maoiri uye nekuomesa sipo dzesimbi.
04. Electrochemical protection
Kana iyo dielectric inopinda mukati ikasangana nepamusoro pesimbi, electrochemical corrosion pasi pefirimu inoumba.Simbi dzine basa rakakwirira kudarika iron dzinoshandiswa semafiritsi mumachira, akadai se zinc.Ichaita basa rekudzivirira sechibairo anode, uye zvigadzirwa zvekuora zvezingi zvine munyu-based zinc chloride uye zinc carbonate, iyo inozadza maburi emufirimu uye kuita kuti firimu rive yakasimba, ichideredza zvakanyanya kuora uye kuwedzera hupenyu hwebasa. vharafu.
2. Coatings inowanzoshandiswa pamavharuvhu esimbi
Nzira dzekurapa dzepamusoro dzemavharuvhu dzinonyanya kusanganisira pendi yekupenda, galvanizing uye poda coating.Nguva yekudzivirira yepende ipfupi uye haigone kushandiswa pasi pemamiriro ekushanda kwenguva yakareba.Iyo galvanizing process inonyanya kushandiswa mumapaipi.Zvose zvinopisa-dip galvanizing uye electro-galvanizing zvinoshandiswa.Nzira yacho yakaoma.Iyo pretreatment inoshandisa pickling uye phosphating maitiro.Pachava neasidhi uye alkali zvisaririra pamusoro pechiso che workpiece, zvichisiya ngura Yakavanzika njodzi inoita kuti galvanized layer nyore kudonha.Kudzivirirwa kwemarara kwesimbi ndeye makore matatu kusvika mashanu.Iyo poda yekuputira inoshandiswa mumavharuvhu edu eZhongfa ine hunhu hwekufukidzira kukora, corrosion resistance, erosion resistance, nezvimwewo, izvo zvinogona kusangana nezvinodiwa zvemavharuvhu pasi pemamiriro ekushandiswa kwemvura system.
01. Valve muviri epoxy resin coating
Ine zvinotevera maitiro:
·Corrosion resistance: Epoxy resin-coated simbi mabara ane yakanaka corrosion resistance, uye simba rekubatanidza nekongiri rakadzikira zvakanyanya.Iwo akakodzera mamiriro emaindasitiri munzvimbo dzine hunyoro kana corrosive media.
·Kunamira kwakasimba: Kuvepo kwemapoka epolar hydroxyl uye ether zvisungo zviri mu epoxy resin molecular chain zvinoita kuti inamire zvakanyanya kune zvakasiyana zvinhu.Iyo shrinkage ye epoxy resin kana yapora yakaderera, kushushikana kwemukati kunogadzirwa kudiki, uye inodzivirira pamusoro pekuvhara haisi nyore kudonha nekutadza.
·Magetsi zvivakwa: Iyo yakaporeswa epoxy resin system ndeye yakanakisa insulating zvinhu ine yakakwira dielectric zvivakwa, pamusoro pekudonha kwekudzivirira, uye arc kuramba.
·Mold Resistant: Iyo yakaporeswa epoxy resin system inoshingirira kune akawanda mold uye inogona kushandiswa munzvimbo dzinopisa dzinopisa.
02. Valve ndiro nylon plate zvinhu
Mashizha enaironi anoshingirira kuita ngura uye akashandiswa zvinobudirira mune zvakawanda zvikumbiro zvakaita semvura, madhaka, chikafu uye kubvisa mvura yegungwa.
·Kuita kwekunze: Iyo naironi plate yekubatisa inogona kupasa bvunzo yekupfapfaidza munyu.Haina kusvuuka mushure mekunyudzwa mumvura yegungwa kwemakore anopfuura 25, saka hapana ngura kune zvikamu zvesimbi.
·Kuramba kupfeka: Kunyanya kusakara zvakanaka.
·Impact kuramba: Hapana zviratidzo zvekusvuuka pasi pesimba rakasimba.
3. Kupfapfaidza nzira
Iyo yekupfapfaidza ndeye workpiece pretreatment → kubvisa guruva → preheating → kumwaya (primer - trimming - topcoat) → kusimba → kutonhora.
Kupfapfaidza Kupfapfaidza kunonyanya kushandisa electrostatic spraying.Zvinoenderana nehukuru hweiyo workpiece, electrostatic spraying inogona kukamurwa kuita hupfu electrostatic spraying production line uye poda electrostatic spraying unit.Iwo maviri maitiro akafanana, uye mutsauko mukuru ndiyo nzira yekuchinja yeworkpiece.Mutsetse wekugadzira wekupfapfaidza unoshandisa cheni yekutumira kune otomatiki kutapurirana, ukuwo pfapfaidzo unit inosimudzwa nemaoko.Ukobvu hwekuputira hunodzorwa pa250-300.Kana ukobvu huri pasi pe 150 μm, kushanda kwekudzivirira kuchaderedzwa.Kana ukobvu huri hukuru kupfuura 500 μm, kusungirirwa kwekuputira kunoderera, kupikisa kwemaitiro kunoderera, uye kushandiswa kwehupfu kuchawedzera.