Pretreatment na electrocoating usoro

Usoro ọgwụgwọ mbụ na electrocoating egosipụtara onyogho

Nkọwa dị mkpirikpi:

Ihe mkpuchi mkpuchi mkpuchi bụ nkwadebe nke mkpuchi mkpuchi tupu mkpuchi ma bụrụ ihe ndabere nke usoro mkpuchi dum.
Ọdịdị nke pretreatment ozugbo na-emetụta àgwà mkpuchi dum, n'ihi ya, anyị ga-aṅa ntị na ya.

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Nkọwa

Mkpado ngwaahịa

Nkọwa ngwaahịa

Ihe dị iche iche na ngwaahịa ha na usoro nhazi, njem, nchekwa, elu ya dị mfe ịmepụta ma ọ bụ
jidesie ihe ndị mba ọzọ, dị ka machining burr, oxide skin, mmanụ, wdg, ihe ndị a na-emetọ elu ga-emetụta nchikota nke mkpuchi na ike njikọ na matrix. mkpuchi mkpuchi pretreatment nke mainEbumnobi bụ iji wepụ ihe ndị a bekee na-eme kwesịrị ekwesị n'elu chemical ntughari na-enye kwesịrị ekwesịCoating chọrọ nke mkpụrụ, na-amụba adhesion nke ihe nkiri, ogologo ndụ ọrụ nke ihe nkiri, Nye egwuregwu zuru ezu na-echebe. mmetụta na mmetụta ịchọ mma nke mkpuchi.

Ya mere, fesa ọdịnaya tupu nhazi. Ọ kachasị gụnyere akụkụ ndị a:

Decreasing tupu mkpuchi

Steel na akụkụ ya na usoro nchekwa na njem iji antirust mmanụ nchebe, mpempe akwụkwọ metal workpiece na ịbịaru mmanụ kwesịrị iji mgbe nhazi nrụgide, akụkụ kwesịrị ịkpọtụrụ emulsion mgbe machining, okpomọkụ ọgwụgwọ nwere ike ịkpọtụrụ jụrụ jụrụ mmanụ, mgbe akụkụ na-enwekarị mmanụ. stains na HanJi nke onye ọrụ aka, griiz nke akụkụ kamakwa adịghị ọcha dị ka mgbe niile na ájá agwakọta ọnụ Ihe a niile, ụdị mmanụ ọ bụla dị na akụkụ ọ bụghị nanị na-egbochi ịmepụta ihe nkiri phosphating, kamakwa ọ na-emetụta adhesion nke mkpuchi ihicha arụmọrụ ịchọ mma na nguzogide corrosion Tebụl 3-1 depụtara ihe dị iche iche pretreatment nke oyi akpọrepu ígwè efere. Mmetụta nke mkpuchi electrophoretic cathodic na nguzogide corrosion.

Phosphate

Phosphating bụ usoro dị mfe, nke a pụrụ ịdabere na ya, dị ọnụ ala na nke dabara adaba iji meziwanye nguzogide corrosion nke mkpuchi elu igwe. A na-eji ya eme ihe n'ụlọ na mba ọzọ, karịsịa na mkpuchi ụgbọ ala, nke a na-ejikarị eme ihe n'afọ ndị na-adịbeghị anya. Ihe fọrọ nke nta ka ọ bụrụ 100% nke akụkụ efere dị mkpa na ụlọ ọrụ ụgbọ ala bụ usoro phosphating phosphating na-ezo aka n'elu igwe na kọntaktị na ngwọta acid nwere dihydrogen phosphate nnu, mmeghachi omume kemịkalụ na nkwụsi ike nke elu igwe nke akpụkpọ anụ inorganic inorganic na-adịghị ahụkebe. usoro ọgwụgwọ kemịkalụ elu na ihe nkiri emepụtara nke a na-akpọ ihe nkiri phosphating.

Ụkpụrụ ihe nkiri phosphate

Ihe nkiri phosphating nwere ike inye ntọala kwesịrị ekwesị maka mkpuchi agba, bụ n'ihi mmetụta ndị a:
1) Na-enye ebe dị ọcha, edo edo, na-enweghị griiz na-adabere na nkwụsị zuru oke
2) enhances adhesion nke organic film na mkpụrụ n'ihi anụ ahụ na kemịkalụ edinam Ọ bụghị ike ịghọta na porous Ọdịdị nke phosphating film enwekwu elu ebe nke mkpụrụ, nke mere na njikọ ebe n'etiti abụọ na-abawanye kwekọrọ ekwekọ, na A na-emepụta permeability bara uru n'etiti ihe nkiri abụọ ahụ. N'otu oge ahụ, mmekọrịta kemịkalụ dị n'etiti resin unsaturated na kristal phosphate na-emekwa ka ike jikọta ya
3) na-enye oyi akwa dịpụrụ adịpụ kwụsiri ike na-abụghị nke na-eduzi, ozugbo mkpuchi mkpuchi, ọ nwere ọrụ nke mgbochi corrosion, karịsịa maka mbepụ anode A na-elegharakarị isi ihe mbụ anya naanị ka kpamkpam ruo mma mmanu iji mepụta ihe nkiri phosphating na-eju afọ. ihe nkiri phosphating n'onwe ya bụ mmetụta kachasị emetụ n'ahụ nke teknụzụ pretreatment nke a pụrụ ịdabere na ya nke onwe ya.