Blueing

Bluing ígwè - chemical usoro iji kwadebe elu nke ígwè akụkụ na mkpa na-echebe film nke oxides Fe3O4 ígwè. The aha na-erite site e ji mara agba akụkụ mgbe nhazi (bluish-nwa, ugoloọma), makwaara dị ka "blackening" ma ọ bụ "sinenie" n'ozuzu, n'agbanyeghị nke agba - "ọxịdashọn". Ihe film passivates elu ma chebe akụkụ si ikuku corrosion na ndị ọzọ na mmetụta nke corrosive media.

Tupu burnishing ígwè zuru ezu na mbụ kwadebere, ọcha site nchara mechanically polished, degreased na pickled na acidic ngwọta. Degreasing nwere ike ịbụ a mgbaze ma ọ bụ mmanya. Etching mkpa wepu ha n'elu niile na-enweghị isi oxides, na-ahapụ iferi metal.

Ihe kacha ụzọ - burnishing ígwè mmanụ. E nwere dị iche iche usoro, ma pụtara dị mfe: na workpiece, a mkpa oyi akwa mmanụ, mgbe ahụ, ọ ga-ewe iwe na 300-350 Celsius C. Bọta, ṅara n'ọkụ site, doo n'elu nke oxide film. Site na oge mbụ a edo mkpuchi na-adịghị nwetara, otú ahụ ka usoro a na-ugboro ugboro ruo mgbe mkpuruedemede N'ihi. Ọ dị mkpa iji nweta edo kpo oku, ma ọ bụghị film ga-aga tụrụ, na adịghị overheat akụkụ, dị ka ọ pụrụ deform ma ọ ga-tọhapụrụ. Ọtụtụ ndị na-eme ka mmeghe na dobe ihe a preheated mmanụ, ọ dị njọ. Ọ ga-abụ nnọọ ihe dị iche: nke mbụ, iteto, mgbe Okpomoku di. Oil iji ihe ọ bụla, si sunflower na nnyefe ma ọ bụ engine. Dị otú ahụ bluing ígwè nwere a ala mkpuchi ike. Ọ bụ nanị nti na ji achọ na-echebe nzube.

Bluing ígwè eji ígwè sulphate, ferric chloride na nitric acid

N'ihi nke a, kwa liter mmiri mkpa igbari 15 g ígwè sulphate na 30 g nke 10 g nke acid. Ngwaahịa na-lowered n'ime ngwọta ga-akpụ nyụrụ mkpuchi, ọ dị mkpa ka oge wepụ ahịhịa na itinye-anọgide ruo mgbe mkpuruedemede agba nke oxide film. Ugbu a ọ fọrọ nke nta ọ bụla obodo e nwere a ụlọ ahịa na-ere ọgwụ, ya mere, iji nweta ha bụ dịtụ mfe.

Bluing ígwè iji potassium bichromate (potassium dichromate). N'ihi nke a, kwa liter nke mmiri jiriwo 200 grams nke potassium bichromate na e mikpuru n'ime ihe ngwọta maka 20-30 nkeji item. Mgbe mwepụ si ngwọta na-ahụ ga-mịrị amị na elu okpomọkụ (na oven ma ọ bụ n'elu icheku). The usoro na-ugboro ugboro ruo mgbe a edo acha anụnụ anụnụ-nwa agba. Mgbe ahụ ehichapụkwa ibe tinyere mmanụ ákwà. Chrompick - reagent bụ nnọọ nkịtị, ọ na-eji na akpụkpọ anụ ụlọ ọrụ.

N'ihi bluing egbe orù-agwakọta n'okpuru kpo oku 1 akụkụ site arọ nke antimony trichloride na 3 akụkụ mmanụ oliv. The ngwakọta ahụ etinyere na ihe ahụ ma na-ekwe ka ada a ụbọchị. The usoro a ugboro ugboro 10-12 ugboro, mgbe nke gbọmgbọm-na-asa, a mịrị amị na-egbu maramara. Agba bụ greenish aja aja.

Dị ka hụrụ si n'elu, burnishing ígwè n'ụlọ - nnọọ apụtakarị na mfe usoro. Ọ nwere ike na-etinyere ọ bụla na ngwaahịa mere ígwè ikpe ebe ụzọ ndị ọzọ nke corrosion nchedo, dị ka agba, na-adịghị na ọdabara.