Cov teeb meem xav tau kev saib xyuas thaum lub sij hawm galvanizing txheej txheem ntawm stamping qhov chaw
1. Kev kho tsis tiav
Muaj cov oxide zaj duab xis nyob rau saum npoo ntawm lub workpiece, uas cuam tshuam rau qhov qub deposition ntawm zinc.
2. Cov conductivity tsis zoo
Tam sim no siv rau ntawm tus neeg xyuas pib, thiab tam sim no faib rau saum npoo ntawm lub workpiece yog me me dhau.
3. Lub workpiece muaj cov ntsiab lus carbon siab
High carbon steel thiab cam khwb cia hlau qhov chaw yuav txo cov hydrogen evolution muaj peev xwm, accelerate hydrogen evolution nyob rau saum npoo ntawm lub workpiece, thiab txo qhov tam sim no efficiency.
4. Lub workpiece yog khi nruj heev
Thaum lub sij hawm galvanizing, cov khoom yog ib feem tiv thaiv, uas ua rau ib tug nyias txheej.
5. Tsawg da dej kub
Thaum lub da dej kub qis, qhov ceev tam sim no thiab qhov tso tawm ntawm cov txheej yuav txo qis raws li.
6. Cov ntsiab lus sodium hydroxide hauv da dej yog siab dhau
Thaum cov ntsiab lus sodium hydroxide siab, qhov ua tau zoo tam sim no yuav txo qis raws li.
7. Cov ntsiab lus ntxiv hauv da dej yog tsawg
Cov ntsiab lus qis ntxiv yuav cuam tshuam rau lub peev xwm dispersion thiab cov txheej yuav nyias dhau.
8. Cov cheeb tsam ntawm qhov electroplated yog underestimated, thiab tam sim no ceev faib thaum electroplating yog tsawg heev.
9. Yog hais tias lub workpiece tsis raug ncua, qhov kev ncua deb ntawm lub workpiece thiab zinc anode loj heev, thiab txoj hauj lwm yuav tsum tau kho.
10. Lub workpiece yog corroded
Thaum cov hydrogen evolution muaj peev xwm txo qis, tam sim no efficiency ntawm accelerating hydrogen evolution ntawm lub workpiece nto txo, cuam tshuam rau zinc deposition tus nqi. Ib tug tsim nyog tus nqi ntawm corrosion inhibitor yuav tsum tau ntxiv rau cov tshuaj pickling. Yog tias qhov ntsuas oxide hauv zos yog tuab heev, nws yuav tsum tau muab tshem tawm ua ntej, thiab kev tshuaj xyuas ntau dua yuav tsum tau ua thaum pickling.
11. Anode passivation
Qhov txo qis hauv cheeb tsam muaj txiaj ntsig cuam tshuam rau qhov kev faib tawm ntawm tam sim no.
12. Cov ntsiab lus sodium hydroxide tsawg
Yog tias cov ntsiab lus ntawm sodium hydroxide tsawg, qhov ceev tam sim no tsis siab, thiab cov anode yog passivated.