1) Salt spray test classification
Muyedzo wekupfapfaidza munyu ndeyekufananidza chiitiko checorrosion munzvimbo yechisikigo kuitira kuti utarise kushora kwekupokana kwezvinhu kana zvigadzirwa.Zvinoenderana neyakasiyana bvunzo mamiriro, munyu wekupfapfaidza bvunzo inonyanya kukamurwa kuita mhando ina: kusarerekera munyu kupfapfaidza bvunzo, acidic munyu yekupfapfaidza bvunzo, ion yemhangura inomhanyisa bvunzo yekupfapfaidza munyu uye kushandura bvunzo yekupfapfaidza munyu.
1.Neutral Salt Spray Test (NSS) ndiyo yekutanga uye yakashandiswa zvakanyanya yakamhanyisa ngura yekuedza nzira.Muedzo unoshandisa 5% sodium chloride saline solution, PH kukosha inogadziriswa mune kwayakarerekera renji (6-7), tembiricha yekuyedza i35 ℃, chinodiwa chemunyu wekupfapfaidza settlement rate pakati pe1-2ml/80cm2.h.
2.Acid Salt Spray Test (ASS) inogadzirwa pahwaro hwekusarerekera munyu kupfapfaidza bvunzo.Muedzo unowedzera glacial acetic acid kune 5% sodium chloride solution, iyo inoderedza pH kukosha kwechigadziro kusvika kune 3. Mushonga unowedzera acidic, uye munyu wakagadzirwa pamagumo unovawo acidic kubva kune neutral salt spray.Mwero wekuora kwayo ungangoita katatu pane webvunzo yeNSS.
3.Copper ion yakawedzera munyu pfapfaidzo bvunzo (CASS) ichangobva kugadzirwa kunze nekukurumidza munyu pfapfaidzo ngura bvunzo.Iyo tembiricha yekuyedza i50 ℃, uye munyu mushoma wemhangura - copper chloride inowedzerwa kune munyu mhinduro, iyo inokonzeresa kuvhuvhuta, uye kukora kwayo kunosvika kasere kune iyo NSS bvunzo.
4.Alternating munyu pfapfaidzo bvunzo ndeye yakazara munyu pfapfaidzo bvunzo, inova chaizvoizvo alternate of kwazvakarerekera munyu pfapfaidzo bvunzo, nyoro kupisa bvunzo uye zvimwe bvunzo.Inonyanya kushandiswa kune yose chigadzirwa chemhando yemhango, kuburikidza nekupinda kwemhepo yakanyorova, kuitira kuti munyu wekupfapfaidza corrosion haingobudiswe pamusoro pechigadzirwa, asiwo mukati mechigadzirwa.Icho chigadzirwa chiri mumunyu wekupfapfaidza, hunyoro kupisa uye mamwe mamiriro ezvakatipoteredza anochinjanisa kutendeuka, uye pakupedzisira ongorora magetsi uye emagetsi zvimiro zvechigadzirwa chose chine kana pasina shanduko.
Izvo zviri pamusoro ndezvesumo yakadzama yezvikamu zvina zvemunyu wekupfapfaidza bvunzo uye maitiro ayo.Mukushandisa kunoshanda, iyo yakakodzera munyu yekupfapfaidza bvunzo nzira inofanirwa kusarudzwa zvinoenderana nehunhu hwechigadzirwa uye chinangwa chebvunzo.
Tafura 1 ichitaura nezve GB/T10125-2021 "Artificial atmosphere corrosion test Test" yemunyu wekupfapfaidza bvunzo" uye zvine chekuita nazvo zvinopa kuenzanisa kweye ina yekupfapfaidza munyu.
Tafura 1 Rondedzero yekuenzanisa yezviyero zvina zvekupfapfaidza munyu
| Test method | NSS | ASS | CASS | Alternating salt spray test |
| Tembiricha | 35°C±2°℃ | 35°C±2°℃ | 50°C±2°℃ | 35°C±2°℃ |
| Avhareji yekugadzika chiyero chenzvimbo yakachinjika ye80㎡ | 1.5mL/h±0.5mL/h | |||
| Concentration yeNaCl solution | 50g/L±5g/L | |||
| PH kukosha | 6.5-7.2 | 3.1-3.3 | 3.1-3.3 | 6.5-7.2 |
| Chikamu chekushandisa | Simbi uye alloys, simbi yakavharwa, kutendeuka mafirimu, anodic oxide mafirimu, organic zvivharo pasimbi substrates. | Mhangura + Nickel + Chromium kana nickel + Chromium yekushongedza plating, anodic oxide coatings uye organic yekuvharisa paaluminium. | Mhangura + Nickel + Chromium kana nickel + Chromium yekushongedza plating, anodic oxide coatings uye organic yekuvharisa paaluminium. | Simbi uye alloys, simbi yakavharwa, kutendeuka mafirimu, anodic oxide mafirimu, organic zvivharo pasimbi substrates. |
2) Salt spray test kutonga
Munyu wekupfapfaidza bvunzo inzira yakakosha yekuodza bvunzo, inoshandiswa kuongorora kusaora kwemaitiro munzvimbo yemunyu yekupfapfaidza.Mhedzisiro yenzira yekutsunga inosanganisira nzira yekumisikidza chiyero, kuyera nzira yekumisikidza, corrosion yemhando yekutarisa nzira uye corrosion data statistical yekuongorora nzira.
1. Kuyera nzira yekutonga ndeyekuenzanisa reshiyo yenzvimbo ine ngura nenzvimbo yakazara, saizi inokamurwa kuita nhanho dzakasiyana, neimwe nhanho sehwaro hwekutonga kwakakodzera.Iyi nzira inoshanda pakuongororwa kwemasampuli akatsetseka, uye anogona kuratidza nemaziso dhigirii rekuora kwemuenzaniso.
2. Kuyera nzira yekutonga iri kuburikidza nehuremu hwemuenzaniso usati uye mushure mekuyera chiyero chekuora, verenga huremu hwekurasikirwa kwekuora, kuti utonge dhigirii rekupokana kwesample.Iyi nzira inonyanya kukodzera yesimbi corrosion resistance assessment, inogona kuongorora huwandu hwekuora kwemuenzaniso.
3. Iyo inoora chitarisiko chekutsunga nzira imhando yekutsunga nzira, kuburikidza nekutarisa kwemunyu pfapfaidzo ngura bvunzo samples kana kubudisa ngura chiitiko kuona.Iyi nzira iri nyore uye intuitive, saka inoshandiswa zvakanyanya mumatanho echigadzirwa.
4. Kuongorora kwehuwandu hwemashoko ekuora kunopa nzira yekugadzira bvunzo dzekuora, kuongorora dhiyabhorosi data uye kuona kuvimbwa kweiyo data yekuora.Inonyanya kushandiswa kuongorora, statistical corrosion, pane kunyanya kune yakatarwa chigadzirwa chemhando yekumisikidza.Iyi nzira inogona kugadzirisa uye kuongorora huwandu hukuru hwekuora data kutora mhedziso dzakarurama uye dzakavimbika.
Muchidimbu, nzira dzekusimbisa dzemunyu wekupfapfaidza bvunzo dzine zvadzo hunhu uye chiyero chekushandisa, uye nzira yakakodzera inofanirwa kusarudzwa kuti iongororwe zvinoenderana nezvinodiwa chaizvo.Idzi nzira dzinopa hwaro hwakakosha uye nzira dzekuongorora kuomarara kwekudzivirira kwezvinhu.
Nguva yekutumira: Mar-01-2024