Mkpuchi mkpuchi nke Galvanized Steel
Ígwè phosphates ma ọ bụ ihe dị ọcha-coater ngwaahịa na-emepụta obere mkpuchi ntughari ma ọ bụ na-adịghị achọpụta na elu zinc. Ọtụtụ ahịrị imecha multimetal na-eji ígwè phosphates gbanwetụrụ nke na-enye ihicha, na-ahapụ micro-chemical etch na zinc mkpụrụ iji nye ihe nrapado.
Ọtụtụ obodo na steeti ugbu a nwere oke na zinc PPMs, na-amanye ndị na-emecha ọla ka ha nye ọgwụgwọ nke ngwọta ọ bụla a na-edozi mkpụrụ zinc.
Ihe mkpuchi ngbanwe zinc phosphate bụ, ikekwe, mkpuchi kachasị mma nke enwere ike imepụta n'elu galvanized. Iji mepụta mkpuchi zinc phosphate na galvanized, a na-achọ ndị na-eme ngwa ngwa pụrụ iche iji rụọ ọrụ elu nke ọma iji nweta mkpuchi zinc phosphate. A na-emepụta mkpuchi ndị a site na omume nke kemịkalụ bat na ihe ndị dị n'elu. A na-etolite zinc phosphate crystalline n'elu ala dị ọcha. N'ime nkeji iri na ise zinc phosphating, usoro dị iche iche bụ:
- Alkaline Cleaner.
- Alkaline Cleaner.
- Wepu mmiri ọkụ.
- Zinc phosphate nhazi ngwọta.
- Mmiri oyi itucha.
- Ọgwụgwọ mgbe emechara (ma chromium ma ọ bụ ụdị nonchromium).
- Deionized mmiri itucha.
Otu nkeji isii ga-ewepụ ogbo 1, na nkeji ise ga-ewepụ nkeji 1 na 7. N'ime usoro ịgbasa ike nke ngwa, a na-akwụsịtụ akụkụ ndị a ga-ekpuchi n'ọwara ebe ihe ngwọta na-esi na tank tank. na fesa n'okpuru nrụgide na akụkụ. A na-emegharị ihe ngwọta nke mkpuchi na-aga n'ihu. N'ime usoro ntinye nke ngwa ngwa, akụkụ ndị a ga-ekpuchi mgbe emechara ya ka a na-agbanye naanị n'ime ngwọta nke ngwọta phosphating dị n'ime mmiri igwe anaghị agba nchara. Usoro ntinye aka na-eji ngwa ngwa eme ihe dị ntakịrị. teknụzụ mkpuchi mgbanwe. A na-ejikarị mkpuchi phosphate eme ihe site na iji usoro ise, isii, ma ọ bụ asaa. A na-ejide phosphatesolution n'ime oke okpomọkụ nke 100 ruo 160 ° F (38 ruo 71 Celsius) maka ịgbasa; 120 ruo 200°F (49 ruo 93°C) maka imikpu; ma ọ bụ okpomọkụ ụlọ maka ihichapụ aka. Ibu mkpuchi zinc phosphate etinyere kwesịrị ịbụ 150 ruo 300 mg./sq. ft.A nhazi oge nke 30 ka 60 sekọnd site n'ịgba na 1 ka 5 nkeji site n'imikpu bụ na-emekarị.Phosphating ngwọta nwere a ịta nke 4 ka 6% site olu na-etinyere na spray pres sure nke 5 ka 10 psi. The zinc phosphate mkpuchi bụ eleghị anya otu n'ime ihe kacha mma agba isi mkpuchi na galvanized ígwè. Ihe ngwọta nhazi chromium phosphate adịghị emepụta ihe mkpuchi agba kwesịrị ekwesị na ígwè galvanized.