Iyo oxide layer iri pamusoro peiyo inopisa-yakakungurutswa Stainless simbi yakavharwa ndiro inowanzoita gobvu. Kana ikabviswa chete nekemikari pickling, haizongowedzera nguva yekuchera uye kuderedza kushanda kwe pickling, asiwo kuwedzera mari yepickling yakawandisa. Nokudaro, dzimwe nzira dzinoda kushandiswa senzira yekubatsira kufanorapa ndiro yesimbi. Pane nzira nhatu huru dzekutanga kurapwa dze pickling:

1. Kuputika kwepfuti

Shot peening inzira inoshandiswa zvakanyanya mechanical dephosphorization parizvino. Nheyo iyi ndeye kushandisa pfuti peening mudziyo kupfapfaidza yakanaka granular simbi pfuti (jecha) kukanganisa Stainless simbi yakavharwa ndiro kubvisa oxide layer pamusoro pesimbi. Mushure mekupfura peening kurapwa, chikamu cheiyo oxide layer inobviswa, uye chimiro cheiyo yakasara oxide layer pabhodhi pamusoro inova inopindirana uye yakasununguka, iyo inobatsira kune inotevera pickling maitiro.

2. Alkali leaching kurapwa

Alkali leaching kurapwa ndeye oxidative alkaline leaching uye kuderedza alkaline leaching. Iyo oxidation-mhando yealkali leaching inonziwo "munyu yekugezesa nzira". Alkaline CrO3, uye nekuda kwekuchinja kwechimiro uye huwandu hweiyo oxide layer, iyo oxide layer inodonha. Yakaderedzwa alkaline leaching ndeye kushandura isinganyunguke simbi oxides sesimbi, nickel, chromium uye mamwe asinganyunguke simbi oxides muokisidhi layer kudzokera kusimbi uye yakaderera-mutengo oxides kuburikidza neiyo yakasimba yekudzikisa agent NaH, uye kuita kuti oxide layer iparare nekudonha, nekudaro ichipfupisa nguva yekunhonga, kuvandudza kugona kwese.

Izvo zvakakosha kuti ticherechedze kuti Stainless simbi yakavharwa mahwendefa anokonzeresa imwe dhigirii yeCr6+ kusvibiswa panguva yekurapa maitiro eiyo oxidative alkali leaching. Kuderedza alkaline leaching kurapwa kunogona kubvisa dambudziko reCr6 + kusvibiswa, asi yakakosha zvinhu, NaH, haigone kugadzirwa muChina. Parizvino, nzira inonyanya kushandiswa muChina ndeye potassium permanganate oxidation mhando alkali leaching kurapwa, nepo kuderedza mhando alkali leaching kurapwa kunowanzoshandiswa kunze kwenyika.

3. Neutral salt electrolysis

Iyo yekusarerekera munyu electrolysis process inoshandisa Na2SiO4 aqueous solution seye electrolyte. Iyo simbi isina tsvina yefirimu-yakavharwa ndiro inogona kupfuura nepakati pemagetsi pakati pecathode uye anode, ichiramba ichichinja cathode uye anode, uye kubvisa iyo yepamusoro oxide layer kuburikidza nekuita kwezvino. Iyo nzira yekusarerekera munyu electrolysis process yakavakirwa pachokwadi chekuti yakaoma-ku-dissolve oxides yechromium, manganese, uye iron muoxide layer inoiswa oxidized kune yakakwira mutengo soluble ions, nekudaro ichinyungudutsa iyo oxide layer; Simbi iri mubhatiri inoiswa oxidized kuita ion, kuitira kuti iyo oxide layer yakanamirwa pamusoro inosvunurwa.