Mgbe workpiece chọrọ ogologo oge nchekwa na njem, ọ dị mfe ịmepụta corrosion, na ngwaahịa corrosion na-abụkarị nchara ọcha.The workpiece kwesịrị ịbụ passivated, na nkịtị passivating usoro bụ chromium-free passivation.
Yabụ kedu uru nchekwa nchekwa igwe anaghị agba nchara?chromium na-enweghị) passivation ngwọta n'elu nchara mgbochi mmanụ?Mmanụ mgbochi nchara bụ iji ihe nkiri mmanụ mechie pores na elu igwe iji kewapụ kọntaktị na oxygen ma gbochie nchara nke ọma, n'eziokwu, ọ dịghị mmeghachi omume.Ihe nkiri mmanụ dị mfe iwepụ ma bibie ya na ọganihu nke mmepụta ihe.
The chromium-free passivation bụ ojiji nke oxidizing bekee na passivation ngwọta na-emepụta REDOX mmeghachi omume na metal, na mmetụta bụ n'ịwa a dị gịrịgịrị, ok, ezigbo mkpuchi arụmọrụ, na ike adsorbed na metal elu nke passivation film. .
Usoro a bụ mmeghachi omume kemịkal.
Ya mere, n'otu oge ahụ, ka anyị na-aghọta uru nkeigwe anaghị agba nchara nchedo gburugburu ebe obibingwọta passivation (free chromium)?
1. Tụnyere na omenala anụ ahụ akara usoro, chromium-free passivation ọgwụgwọ nwere àgwà nke na-adịghị amụba ọkpụrụkpụ nke workpiece na-agbanwe agba, na-emezi nkenke na kwukwara uru nke ngwaahịa, na-eme ka ọrụ ndị ọzọ adaba.
2. Chromium-free passivation na-akwalite guzobe oxygen molekul Ọdịdị passivation film na metal elu, film oyi akwa bụ ok, mụ arụmọrụ, na ikuku, ya mere, tụnyere na omenala usoro mkpuchi mgbochi nchara mmanụ, ndị passivation. Ihe nkiri a na-eme site na ngafe na-enweghị chromium na-akwụsi ike yana ihe na-eguzogide corrosion karịa.
Ụlọ ọrụ EST Chemical Groupe rube isi na "obi inye ndị ahịa na asọmpi ngwaahịa na ọrụ maka abamuru nke ọha mmadụ" ozi nkwenye, na-aga n'ihu ọhụrụ, n'ihi na ndị ahịa na-edozi nsogbu na ubi nke passivation nchara mgbochi, na-enye elu àgwà elu-tech ngwaahịa, na dị ka ndị ahịa chọrọ iji nye usoro ngwọta zuru ezu iji gboo mkpa pụrụ iche nke ndị ahịa.A raara anyị nye iji nye ọrụ dị mma na ngwaahịa dị mma maka ndị ahịa ọ bụla, ma na-atụ anya ka gị na gị rụọ ọrụ iji merie!
Oge nzipu: Nov-20-2023