Ko ngā tukanga maimoatanga mata e whakamahia whānuitia ana ko ngā tīwirite whakahāora, te hikohiko, te whakakikorua, te Dacromet e whā ngā kāwai, ko te mea nui ko te whakawiri i tetae o te maimoatanga mata o te whakarāpopototanga whakarōpūtanga.
- Pango waikura：
Kua wehea ki te pango i te pāmahana rūma me te pango i te pāmahana teitei, ki te pango i te pāmahana rūma hei tauira o te tukanga ko: te tango hinu matū – te horoi wai wera – te horoi wai matao – te tango waikura me te whakairo waikawa – te horoi – te pango – te horoi -Ki runga i te hinu, ki runga rānei i te katia. He paparanga kiriata waikura i hangaia e te konutai hauwai me te konutai nitrite i te pāmahana teitei neke atu i te 100 nekehanga.
Ko te wāhanga matua o te kiriata waikura ko te rino tetraoxide (Fe3C4), ko te ōritetanga o te kiriata he 0.6-1.5um anake, he ngoikore te ātete ki te waikura, mēnā kāore i te rehuhia ki runga i te hinu, ki te tote kūpapa rānei mō te 1-2 hāora pea, ka rehuhia ki runga i te hinu mō te 3-4 hāora pea. Kāore ngā taputapu iti e whakamahi i tēnei tukanga mō tēnei wā. He rerekē te tae o te waikura pango me te konutea pango me te pango hiko-whakaata, engari kāore i te kanapa pērā i te konutea pango me te pango hiko-whakaata.
- Whakarewahia：
E rua ngā momo konutea pango, arā, te konutea pango me te nikara pango, he rite tonu te kaupapa o te tukanga, ko te hanganga anake o te otinga konutea me te maimoatanga muri-maimoatanga me ngā momo otinga whatu, otinga whakangāwari rānei. He matū kaha te konutea, he ngāwari ki te waikura me te whakapōuri i roto i te hau, ā, i te mutunga ka puta he waikura 'waikura mā', ka pania te konutea i muri i te maimoatanga chromate hei uhi i te paparanga konutea i runga i te kiriata hurihanga matū, kia noho te konganuku kaha i roto i te āhua kore mahi, ko te whakangāwari o te paparanga konutea. Mai i te āhua ka taea te wehewehe i te kiriata whakangāwari ki te whakangāwari mā (konutea mā), kikorangi mārama (konutea kikorangi), whakangāwari pango (konutea pango), whakangāwari kakariki hōia (konutea matomato) me ētahi atu.
- Pango Hikohiko：
Mā te whakamahi i te tikanga hikohiko hei whakatakoto i ngā matūriki colloidal o te kapia waro ki runga i ngā wāhanga hei hanga i te paparanga paninga waro o ngā tae rerekē, ka whakamahia nuitia te mangu hikohiko i roto i te umanga, hei tauira: te tango-horoi-whakapūtā-hikohiko-whakamaroke peita. Ka taea te wehewehe ki te hikohiko anodic (te whakakoi kapia ki ngā katote kino) me te hikohiko cathodic (te hikohiko kapia ki ngā katote pai), ā, ki te whakatauritea ki te tukanga peita he pai te mahi hanga, ka whakaitihia te ātete ki te parahanga me te kino ki te taiao ki te mahi rehu tote kūpapa i roto i te 300 hāora neke atu rānei, he rite te utu me te ātete ki te waikura me te tukanga Dacromet.
- Konutea mā：
Ko te tukanga hikohiko ko: te tango hinu - te horoi - te whakahohenga waikawa ngoikore - te hikohiko konutea - te horoi - te whakakorenga ma te makawe - te horoi - te whakamaroke, ā, kāore he rerekētanga o te konutea pango. He rerekētanga nui atu i te otinga whakakorenga, ko te whakakorenga ma he kiriata konutea mārama, kāore he tae, tata kore he chromium, nō reira he ngoikore ake te ātete waikura ki te konutea pango, te konutea kikorangi, te konutea tae, ko te paerewa ahumahi i roto i te 6-12 hāora. Kei reira tēnei kaihanga whakakikorua mā te whakapai ake i te ōwehenga o te otinga whakakorenga ka taea te mahi ki te ātete i te rehu tote kūpapa mō te 20 hāora.
Nā te tukanga maimoatanga mata o te konutea mā, i te tīmatanga ka puta te waikura mā i runga i te mata o te konutea, ā, ka puta te waikura whero i roto i te 40 hāora pea, nō reira he pai ake te ātete ki te waikura konutea mā i te nikara mā. Ki te whakatauritea ki te āhua o te nikara mā, he mā-kakariki te tae taketake o te konutea mā, ā, ki te whakatauritea ki te nikara mā, he nui ake te rerekētanga.
- Nikara Mā：
Ko te tukanga whakakikorua ko: te tango hinu – te horoi – te whakahohe waikawa ngoikore – te horoi – te raro parahi – te whakahohe – te horoi – te whakakikorua hiko i te nikara – te horoi – te whakamaroke – te kati rānei, ā, he rite tonu te tukanga nikara pango, he rerekē te tauira otinga whakakikorua, he iti ake te konutea whanariki ka honoa. He konganuku hiriwa-mā te nikara, kia pai ake ai te āhua, ka honoa ki te whakakanapa whakakikoruatia ki te nikara. Kāore he rerekētanga nui o tōna ātete ki te waikura me te nikara pango, 6-12 hāora te roa, ka whakamahia hoki te tukanga a ngā kaihanga whānui ki runga hinu, ki runga kati rānei, pērā i te whakaaro ki te pānga o te waikura ki ngā wāhanga kirihou o te rauemi e haere mai ana hei arotahi ki te whakahaere mēnā ka nui ake te hinu.
- Konutea kikorangi, konutea kakariki：
He rite tonu te tukanga ki te konutea mā, ko te kiriata konutea kikorangi kua whakakorehia te konutea kikorangi kei roto ko te 0.5-0.6mg/dm2 o te chromium trivalent. Mā te whakakorenga kakariki, e mōhiotia ana ko te whakakorenga waikawa-rima, ka taea te whiwhi i te kiriata tarutaru-kakariki matotoru, kei roto i te otinga whakakorenga ngā katote phosphate, ko te kiriata tarutaru-kakariki kanapa ka puta he kiriata tiaki matatini, he hanganga matatini o ngā chromates me ngā phosphates.
Mō tōna ātete ki te waikura, he pai ake te konutea kikorangi i te konutea mā, engari he pai ake te konutea kakariki i te konutea kikorangi. He kikorangi paku te tae o te konutea kikorangi, ā, he tata te konutea mā ki te ahumahi kia nui ake te whakamahi, ka taea hoki te whakamahi hei hoahoa hua ina whakamahia he tukanga rerekē mō ngā tīwiri.
- Konutea whakakikoruatia (matū)：
I roto i te wāhanga whakapūmau o te tukanga konutea tae, he pai te ātete ki te waikura, ko tana tukanga whakapūmau tae ko: whakapūmau – horoi – 2% – 3% waikawa hauota mai i te mārama – horoi – iti te chromium whakapūmau tae – horoi - tunua te pakeketanga. He iti rawa te pāmahana whakapūmau, he puhoi te kiriata, he angiangi te kiriata mārama. He pāmahana teitei, he matotoru, he wetewete te kiriata, kāore i te piri pūmau. He pai ake te whakahaere i te 25 nekehanga kia tino whiwhi ai i te tae ōrite i roto i tētahi wā kua whakaritea.
I muri i te whakakorenga, me tunu, me whakatōkia kia pai ake ai te piri me te ātete ki te waikura o te kiriata. Tāpirihia he tae ki ngā tīwiri whakakikoruatia ki te konutea mā te pā atu ki te raro o te ātete ki te rehu tote kūpapa i roto i ngā haora neke atu i te 48, ka taea te whakahaere pai i roto i ngā haora neke atu i te 100.
- Dacromet：
Ko te whakarāpopototanga me te whakamāoritanga tēnei o DACROMET, arā, he paninga tiaki tote chromium konutea-konutea, e kiia ana hoki he paninga konutea-konumohe. Ko te tukanga taketake ko: te tango hinu - te tango hinu - te paninga - te whakamahana - te whakamahana - te whakamatao. Ko te tikanga, e 2-4 ngā wā o te tukanga mai i te paninga ki te whakamatao, nā te mea me maha atu ngā wā e mahia ai ngā tīwiri me te paninga tuku kia tutuki ai he matotoru.
Kei runga i te mata whakarewa te hanganga, kua pania ki te paparanga o te otinga Dacromet (arā, kei roto ngā unahi o te konutea, te konumohe [ko ngā unahi te rahi 0.1-0.2X10-15 microns] Cr03 me ngā mea rauropi motuhake o te otinga wai whakaranu tino marara), mā te 300 ° C pea te roa o te tunu i te wera tiaki mō tētahi wā, ka heke te wai Dacromet i roto i te chromium hexavalent ki te chromium trivalent, ka hua ake he pūhui chromate hiato amorphous (nCr03) mCr203).
He tino pai te ātete ki te waikura, he tote kūpapa tae atu ki te 300 hāora, neke atu rānei, ko te ngoikoretanga o te paninga kāore i te ōrite, he angiangi te tūranga o te 5-10um, he matotoru te tūranga o te 40um, ka pā ki te hohonutanga o te diameter o te tīwiri, nō reira he tino pai te whakamahi i te tukanga Dacromet hei maimoatanga mata mō ngā tīwiri me ngā tīwiri he diameter iti te tīwiri.
Wā tuku: Hepetema-18-2024
