Kupu Whakataki: Ko te mahi hanga ohua kirihouKo te nuinga o nga tikanga matua e wha: te hanga pokepokea, te maimoatanga mata, te ta, me te huihuinga. Ko te maimoatanga mata tetahi waahanga nui. Hei whakapai ake i te kaha hononga o te paninga me te whakarato i te turanga whakahaere pai mo te whakakikorua, he mea nui te tukanga maimoatanga o mua.
Te maimoatanga mata o nga hua kirihou
Ko te nuinga ko te maimoatanga paninga me te maimoatanga whakakikorua. Ko te tikanga, he nui te ahua o te tioata, te polarity iti, te kore polarity ranei, me te iti o te kaha o te mata, ka pa ki te piri o te paninga. I te mea ko te kirihou he insulator kore-conductive, kaore e taea te whakakikorua tika ki runga i te mata kirihou kia rite ki nga whakaritenga o te tukanga electroplating. Na reira, i mua i te maimoatanga o te mata, me whakahaere te whakamaaramatanga e tika ana hei whakapai ake i te kaha hono o te paninga me te whakarato i te paparanga raro conductive me te kaha hononga pai mo te whakakikorua.
Pretreatment o paninga
Ko te maimoatanga o mua ko te whakakore i te mata kirihou, ara ko te horoi i te hinu me te kaihoko tuku i runga i te mata, me te whakahohe i te mata kirihou, kia pai ake ai te piri o te paninga.
1, Whakakore
Te whakaheke hinu ohua kirihou. He rite ki te whakaheke i nga hua whakarewa, ka taea te whakakore i nga hua kirihou ma te horoi ki nga whakarewa pararopi, ki te whakaheke ranei ki nga wairewa wai kawakore kei roto nga hau. Ko te whakaheke me te whakarewa pararopi he pai mo te horoi paraffin, te ware pi, te ngako me etahi atu para pararopi mai i te mata kirihou. Ko te whakarewa pararopi e whakamahia ana kia kaua e rewa, e pupuhi, e ngatata ranei te kirihou, he iti te ira koropuke, he wariu, he paitini, he kore e mura. He pai nga wairewa wai kawakore mo te whakaheke i nga kirihou kawakore. Kei roto i te wairewa te houra, te tote kawakore me nga momo wairewa. Ko te surfactant e whakamahia nuitia ana ko te raupapa OP, ara, alkylphenol polyoxyethylene ether, e kore e hanga pahuka, e kore e noho ki te mata kirihou.
2, Whakahohenga mata
Ko tenei whakahohenga he whakapai ake i nga ahuatanga o te mata o nga kirihou, ara, ki te whakaputa i etahi roopu polar ki runga i te mata kirihou, ki te whakatakariri ranei kia ngawari ake ai te whakamakuku me te whakauru ki te mata o te mea mahi. He maha nga tikanga mo te maimoatanga o te mata o te mata, penei i te waiora matū, te mura o te mura, te wairewa kohu wairewa me te maru o te corona. Ko te mea tino whakamahia nuitia ko te maimoatanga whakamaarama karaihe matū, he maha nga wa e whakamahi ana i te wai maimoatanga waikawa chromic, a ko tana tauira angamaheni ko te 4.5% te pāhare pāporo dichromate, te 8.0% te wai, me te 87.5% te waikawa sulfuric (neke atu i te 96%).
Ko etahi o nga hua kirihou, penei i te polystyrene me nga kirihou ABS, ka taea te whakakikorua tika me te kore he maimoatanga waiora matū. Ki te whiwhi paninga-kounga teitei, ka whakamahia hoki te maimoatanga waiora matū. Hei tauira, i muri i te whakaheke, ka taea te taraihia te kirihou ABS ki te wai maimoatanga waikawa chromic. Ko tana tauira maimoatanga angamaheni ko te 420g/L te waikawa chromic me te 200ml/L te waikawa pungatara (te taumahatanga 1.83). Ko te tukanga maimoatanga angamaheni ko 65 ℃ 70 ℃ / 5min10min, te horoi wai, me te whakamaroke. Ko te painga o te tarai ki te wai maimoatanga waikawa chromic, ahakoa he aha te uaua o te ahua o te hua kirihou, ka taea te mahi rite. Ko te kino ko te mahi he kino, he raruraru parahanga.
Pretreatment o te paninga paninga
Ko te kaupapa o te whakamaoritanga o te paninga paninga ko te whakapai ake i te piri o te paninga ki te mata kirihou me te hanga i tetahi paparanga o raro whakarewa i runga i te mata kirihou. Ko te tikanga o mua i te maimoatanga ko: te whakamaarama miihini, te whakaheke matū, te whakamaarama matū, te maimoatanga whakamohoatanga, te maimoatanga whakahohe, te maimoatanga whakaheke me te whakakikorua matū. Ko nga mea tuatahi e toru hei whakapai ake i te piri o te paninga, a ko nga mea whakamutunga e wha hei hanga i tetahi paparanga whakarewa whakarewa.
1、Te whakaraerae i nga miihini me nga mahi matū
Ko te whakamaarama miihini me te whakamaarama matū kia taratara ake te mata kirihou ma nga tikanga miihini me nga tikanga matū hei whakanui ake i te waahi whakapiri i waenga i te paninga me te taputapu. Ko te nuinga o te whakaaro ko te kaha honohono ka taea ma te tarai miihini he tata ki te 10% noa iho o te taikaha matū.
2. Te whakakore matū
Ko te tikanga whakaheke mo te maimoatanga o mua o te paninga mata kirihou he rite tonu ki te tikanga whakaheke mo te maimoatanga o mua o te paninga.
3. Whakatairanga
Ko te whakamohiotanga ko te whakauru i etahi matū ngawari ki te waikura, penei i te tine dichloride, te titanium trichloride, me etahi atu, ki runga i te mata o nga kirihou me etahi kaha whakauru. Ko enei matū ngawari kua whakapourihia ka oxidized i roto i te maimoatanga whakahohenga, a ka whakahekehia te activator ki te karihi karaihe catalytic ka noho tonu ki te mata o te hua. Ko te mahi o te whakamohiotanga ko te whakatakoto i te turanga mo te paparanga whakarewa matū e whai ake nei.
4. Whakahohenga
Ko te whakahohe ko te rongoa i te mata tairongo me te awhina o te otinga o nga puhui whakarewa catalytically active. Ko tona ngako ko te ruku i te hua kua uruhia ki te kaihoko whakaheke ki roto i te wairewa wai kei roto he hāora o te tote konganuku utu nui, kia whakahekehia nga katote konganuku utu nui e S2+n hei mea hāora, a ka waiho te whakarewa utu nui ki runga i te mata o te hua i roto i te ahua o te matūriki colloidal, e he mahi catalytic kaha. Ina rukuhia tenei mata ki roto i te otinga whakakikorua matū, ka noho enei matūriki hei pokapu catalytic, e whakatere ana i te tere tauhohenga o te whakakikorua matū.
5、Whakaiti maimoatanga
I mua i te whakakikorua matū, ko nga hua kua whakahohehia me te horoi ki te wai ma, ka rukuhia ki roto i tetahi kukū o te otinga o te kaihoko whakaheke e whakamahia ana i roto i te whakakikorua matū hei whakaiti me te tango i te kaiwhakaora kaore i horoia. Ka kiia tenei ko te maimoatanga whakaheke. Ka whakakikoruatia te parahi matū, ka whakamahia te wairewa formaldehyde mo te maimoatanga whakaheke, a ka whakakikoruatia te nickel matū, ka whakamahia te otinga konutai hypophosphite mo te maimoatanga whakaheke.
6, whakakikorua matū
Ko te kaupapa o te whakakikorua matū ko te hanga i tetahi kiriata whakarewa i runga i te mata o nga hua kirihou hei hanga tikanga mo te whakakikorua i te paparanga whakarewa o nga hua kirihou. Na reira, ko te whakakikorua matū he mahi matua mo te whakakikorua hiko kirihou.
Wā tuku: Hune-13-2024