Ụzọ ndị a na-emekarị maka ịgwọ blackening nke igwe anaghị agba nchara

Ụkpụrụ: Site na ọgwụgwọ kemịkal, a na-emepụta ihe nkiri oxide n'elu igwe, a na-enwetakwa ọgwụgwọ elu site na ihe nkiri oxide. Ụkpụrụ a na-eji na usoro ọgwụgwọ elu a bụ ịmepụta ihe nkiri oxide n'elu igwe n'okpuru ihe eji eme ihe kwekọrọ na ya, nke nwere ike kewapụ ígwè ahụ site na kọntaktị kpọmkwem na gburugburu ebe obibi.

Ụzọ ndị a na-ejikarị eme ka igwe anaghị agba nchara ojii bụ ndị a:

Nkeji 1: Usoro agba acid

(1) Usoro dichromate a wụrụ awụ. Tinye akụkụ igwe anaghị agba nchara n'ime ngwọta sodium dichromate a wụrụ awụ wee kpalite nke ọma maka nkeji 20-30 iji mepụta ihe nkiri ojii oxide. Wepu ma dị jụụ, wee kpochaa na mmiri.

(2) Usoro oxidation ojii chromate. Usoro mgbanwe agba nke oyi akwa ihe nkiri a sitere na ìhè ruo ọchịchịrị. Mgbe ọ na-agbanwe site na-acha anụnụ anụnụ gaa na-acha anụnụ anụnụ (ma ọ bụ oji dị ọcha), oge etiti oge bụ naanị 0,5-1 nkeji. Ọ bụrụ na-atụfu isi ihe a kacha mma, ọ ga-alaghachi na-acha aja aja na-acha aja aja, enwere ike wepu ya ma gbanwee ya.

2. Usoro vulcanization nwere ike nweta ihe nkiri ojii mara mma, nke kwesịrị ka a kpochaa ya na aqua regia tupu oxidation.

3. Usoro oxidation alkaline. oxidation Alkaline bụ ihe ngwọta a kwadebere na sodium hydroxide, na oge oxidation nke 10-15 nkeji. Ihe nkiri ojii oxide nwere ezigbo nguzogide iyi na ọ dịghị achọ ọgwụgwọ ọgwụgwọ. Oge ịgba nnu na-adịkarị n'etiti awa 600-800. Nwere ike ịnọgide na-enwe ezigbo mma nke igwe anaghị agba nchara na-enweghị nchara.

Nkeji 2: Usoro oxidation electrolytic

Nkwadebe ngwọta: (20-40g / L dichromate, 10-40g / L manganese sulfate, 10-20g / L boric acid, 10-20g / L / PH3-4). A na-etinye ihe nkiri a na-acha agba na 10% HCl ngwọta na 25C maka nkeji 5, ọ dịghịkwa mgbanwe agba ma ọ bụ peeling nke oyi akwa ihe nkiri dị n'ime, na-egosi ezigbo nguzogide corrosion nke oyi akwa ihe nkiri. Mgbe electrolysis gasịrị, 1Cr17 ferritic igwe anaghị agba nchara na-agba oji ngwa ngwa, wee sie ike iji nweta ihe nkiri ojii oxide nwere agba edo, ngbanwe, na ogo siri ike. Àgwà ndị a bụ usoro dị mfe, ọsọ oji na-agba ọsọ ọsọ, mmetụta agba dị mma, yana ezigbo nguzogide corrosion. Ọ dị mma maka ọgwụgwọ blackening elu nke igwe anaghị agba nchara dị iche iche ma ya mere nwere uru bara uru dị ukwuu.

Nkeji 3: Usoro ọgwụgwọ ọkụ QPQ

A na-eme ya na ngwá ọrụ pụrụ iche, oyi akwa ihe nkiri ahụ siri ike ma nwee nguzogide dị mma; Otú ọ dị, n'ihi na eziokwu na igwe anaghị agba nchara, karịsịa austenitic igwe anaghị agba nchara, adịghị nwere otu nchara mgbochi ikike dị ka tupu mgbe QPQ ọgwụgwọ. Ihe kpatara ya bụ na ọdịnaya chromium dị n'elu austenitic igwe anaghị agba nchara mebiri emebi. N'ihi na n'ime usoro QPQ gara aga, nke bụ usoro nitriding, carbon na nitrogen ọdịnaya ga-abanye n'ime ya, na-eme ka ọkpụkpụ dị elu. Ọ dị mfe ime nchara, ndị ogbenye ịgba nnu ga-ata nchara n'ime awa ole na ole. N'ihi adịghị ike a, arụmọrụ ya dị oke.