Dị ka nyocha na nyocha, corrosion bụ otu n'ime ihe ndị dị mkpa na-akpata mmebi nke valves nru ububa.N'ihi na oghere dị n'ime na-ejikọta ya na onye na-ajụ ase, ọ na-emebi emebi nke ukwuu.Mgbe corrosion gasịrị, dayameta valvụ na-adị ntakịrị ma na-eguzogide mmiri na-asọba, nke na-emetụta nnyefe nke ọkara.A na-etinyekarị elu nke ahụ valvụ na ala ma ọ bụ n'okpuru ala.Elu dị na kọntaktị na ikuku na ikuku na-ekpo ọkụ, ya mere ọ na-adịkarị mfe nchara.A na-ekpuchi oche valvụ ahụ kpamkpam ebe oghere dị n'ime na kọntaktị na ọkara.Ya mere, ọgwụgwọ mkpuchi elu nke valvụ ahụ na valvụ valvụ bụ ụzọ nchebe kachasị dị irè megide corrosion na gburugburu ebe obibi.
1. Ọrụ nke nru ububa valve mkpuchi elu
01. Valve ahu ihe njirimara
A na-etinye agba oyi akwa n'elu na-adịghị arụ ọrụ nke valvụ ahụ na bonnet.Site na akara agba a, anyị nwere ike ikpebi ngwa ngwa ihe nke valvụ ahụ ma ghọtakwuo njirimara ya.
| Ihe onwunwe Valve | Agba agba | Ihe onwunwe Valve | Agba agba |
| Nkedo ígwè | Nwa | Iron ductile | Acha anụnụ anụnụ |
| Igwe anaghị agba nchara | Nwa | WCB | Agba ntụ |
02. Mmetụta ọta
Mgbe ejiri agba kpuchie elu valvụ ahụ, akụkụ ahụ valvụ ahụ dịpụrụ adịpụ na gburugburu ebe obibi.Enwere ike ịkpọ mmetụta nchebe a mmetụta mkpuchi.Otú ọ dị, a ghaghị ịkọwapụta na akwa akwa akwa enweghị ike inye mmetụta nchebe zuru oke.N'ihi na polymers nwere ogo ume iku ume, mgbe mkpuchi ahụ dị oke mkpa, oghere nhazi na-ekwe ka mmiri na ikuku oxygen na-agafe n'efu.valvụ mkpuchi dị nro nwere ihe siri ike chọrọ na ọkpụrụkpụ nke mkpuchi resin epoxy n'elu.Iji mee ka ihe na-adịghị mma nke mkpuchi ahụ dịkwuo mma, ihe mkpuchi mgbochi na-eme ka ọ bụrụ ihe na-emepụta ihe nkiri na-emepụta ihe na-emepụta ihe na-emepụta ihe na-eme ka ikuku dị ala na ihe ndị siri ike na-eji ihe nchebe dị elu.N'otu oge ahụ, ọnụ ọgụgụ nke mkpuchi mkpuchi kwesịrị ịba ụba ka mkpuchi ahụ wee ruo n'ókè ụfọdụ ma bụrụ nke siri ike na nke na-adịghị.
03.Mgbochi corrosion
Ihe ndị dị n'ime ime nke agba na-emeghachi omume na ígwè iji mee ka elu igwe gafere ma ọ bụ mepụta ihe nchebe iji meziwanye mmetụta nchebe nke mkpuchi ahụ.Maka valvụ nwere ihe pụrụ iche chọrọ, ị ga-aṅa ntị na ihe mejupụtara agba iji zere mmetụta ọjọọ dị njọ.Tụkwasị na nke ahụ, valvụ ígwè nkedo nke a na-eji na pipeline mmanụ nwekwara ike ịrụ ọrụ dị ka ihe mgbochi corrosion organic n'ihi ngwaahịa mmebi nke a na-emepụta n'okpuru ọrụ nke ụfọdụ mmanụ na ihicha ncha ígwè.
04. Electrochemical nchebe
Mgbe mkpuchi dielectric penetrating na-abanye na kọntaktị na elu igwe, electrochemical corrosion n'okpuru ihe nkiri ahụ ga-etolite.A na-eji ọla ndị nwere ọrụ dị elu karịa ígwè dị ka ihe nkpuchi na mkpuchi, dị ka zinc.Ọ ga-arụ ọrụ nchebe dị ka anode ịchụàjà, na ngwaahịa corrosion nke zinc bụ zinc chloride na zinc carbonate nke nnu, nke ga-ejupụta oghere dị na fim ahụ ma mee ka ihe nkiri ahụ sie ike, na-ebelata corrosion nke ukwuu na ịgbatị ndụ ọrụ. valvụ ahụ.
2. Ihe mkpuchi a na-ejikarị na valvụ ígwè
Ụzọ ọgwụgwọ elu nke valves na-agụnye mkpuchi agba, galvanizing na mkpuchi ntụ ntụ.Oge nchebe nke agba dị mkpụmkpụ na enweghị ike iji ya n'okpuru ọnọdụ ọrụ ruo ogologo oge.A na-ejikarị usoro galvanizing eme ihe na pipeline.A na-eji ma galvanizing na-ekpo ọkụ na-ekpo ọkụ na electro-galvanizing.Usoro dị mgbagwoju anya.Pretreatment na-eji pickling na phosphating usoro.A ga-enwe acid na alkali residues n'elu nke workpiece, na-ahapụ corrosion zoro ezo ize ndụ na-eme ka galvanized oyi akwa mfe ịdapụ.Nguzogide corrosion nke galvanized ígwè bụ afọ 3 ruo 5.Ihe mkpuchi ntụ ntụ nke a na-eji na valves Zhongfa anyị nwere njirimara nke mkpuchi siri ike, nkwụsị nke corrosion, nkwụsị nkwụsị, wdg, nke nwere ike izute ihe ndị a chọrọ nke valves n'okpuru ọnọdụ ojiji nke usoro mmiri.
01. Valve ahu epoxy resin mkpuchi
Nwere njirimara ndị a:
· Nguzogide corrosion: Ogwe nchara nke epoxy resin nwere ezigbo nguzogide corrosion, na ike njikọ ya na ihe na-ebelata nke ukwuu.Ha dabara maka ọnọdụ ụlọ ọrụ na gburugburu iru mmiri ma ọ bụ mgbasa ozi na-emebi emebi.
· Mgbakwunye siri ike: Ịdị adị nke otu polar hydroxyl na ether bond dị n'ime agbụ molekul nke epoxy resin na-eme ka ọ bụrụ nke ukwuu na-ejikọta ya na ihe dị iche iche.Mbelata nke resin epoxy mgbe a gwọrọ ya dị ala, nrụgide dị n'ime ya na-emepụta dị ntakịrị, na mkpuchi elu nchebe adịghị mfe ịdapụ ma daa.
Ngwa eletriki: Sistemu resin epoxy a gwọrọ bụ ihe mkpuchi dị mma nke nwere akụrụngwa dielectric dị elu, nguzogide elu elu, yana nguzogide arc.
Ihe na-eguzogide ebu: Sistemu resin epoxy gwọrọ na-eguzogide ọtụtụ ebu ma enwere ike iji ya na ọnọdụ okpomọkụ siri ike.
02. Valve efere nylon efere ihe
Ibé akwụkwọ naịlọn na-eguzogide nrụrụ nke ukwuu ma ejirila ya mee ihe nke ọma n'ọtụtụ ngwa dị ka mmiri, apịtị, nri na ịsa mmiri mmiri.
· Ọrụ dị n'èzí: mkpuchi efere nylon nwere ike ịgafe ule ịgba nnu.Ọ kachabeghị mgbe etinyere ya n'ime mmiri oké osimiri ihe karịrị afọ 25, n'ihi ya, ọ dịghị corrosion na metal akụkụ.
· Nguzogide iyi: ezigbo nguzogide iyi.
· Mmegide mmetụta: Ọ dịghị ihe ịrịba ama nke ịpụpụ n'okpuru mmetụta siri ike.
3. Usoro ịgbasa
The spraying usoro bụ workpiece pretreatment → uzuzu mwepụ → preheating → spraying (primer - trimming - topcoat) → solidification → jụrụ.
Ịfesa fesa tumadi na-eji electrostatic spraying.Dị ka size nke workpiece, electrostatic spraying nwere ike kewara n'ime ntụ ntụ electrostatic spraying mmepụta akara na ntụ ntụ electrostatic spraying unit.Usoro abụọ ahụ bụ otu, na isi ihe dị iche bụ usoro ntụgharị nke workpiece.The ịgba mmepụta ahịrị na-eji a nnyefe yinye maka akpaka nnyefe, mgbe ịgba unit na-aka hoisted.A na-achịkwa ọkpụrụkpụ nke mkpuchi ahụ na 250-300.Ọ bụrụ na ọkpụrụkpụ erughị 150 μm, a ga-ebelata ọrụ nchebe.Ọ bụrụ na ọkpụrụkpụ dị elu karịa 500 μm, mkpuchi mkpuchi ga-ebelata, mmegide mmetụta ga-ebelata, oriri ntụ ga-abawanye.