Kua whai mana te pēpeke tāporo Sn99Ag0.3Cu0.7 mō ōna āhuatanga paihika me te mehana, kia whakaaetia e ia hei taikura whakamahere i ngā take PBC. Ko tēnei pēpeke tāporo ka tukua he mea pai ki te whakawhanake paihika, e hāngai ana ki te whakamutunga i te uru o te hanganga tāporo. Ko te whakahaere paihika he mea nui hei tirotiro i te whakaheke me te roa o ngā rara ki runga i ngā huia matatini, inaianei i roto i ngā whakahaere pai. He mea nui anō hoki te rangatū o te mehana o te Sn99Ag0.3Cu0.7, ka tuku atu i te kaha o te whakapiri me te whakahoki i te mate. Nō reira, ko ēnei āhuatanga he mea nui kia mau ai ngā hononga tāporo kia mataku, kia noho tonu i mua i te mehana me te whakawhiti paihika. Kua whakaatu ngā rorohiko he mea pai ake te Sn99Ag0.3Cu0.7 ki te whakaaetanga tapaahi i ngā whakahaere whakamahere, kia whakaae mai ki tana pai mo ngā whakamahere PBC matatini me ngā whakahaere pai.
Kei roto i te ao o ngā pūnaha matatini, ko te whakapakari i te kawekeke hēmama he mea nui, inā ia ki te mahi i runga i ngā hanganga matatini matua. Ko te Sn99Ag0.3Cu0.7 e pai ana i tēnei wāhi me tana whirinaki kaimahi, e whakapai ana i te āhua o te kawekeke me te iti iho i ngā hapa hēmama. Ko te kawekeke tika hei whakamana i te mea ka noho matawhaiora ai te hēmama i runga i te paepae me te whakatupu i tētahi hononga tirohia. He mea nui tēnei i roto i ngā mahi hēmama matatini, kei reira te rīpeka o ngā hapa piki me ngā hapa. Kua whakaae mai i ngā tauaromataki i te whakamahi pai o te Sn99Ag0.3Cu0.7 i ngā papa waehere matatini, e whakaatu ana i tana pūmanawa ki te tuku atu i ngā hononga nui me ngā hononga tirohia. Nō reira, ko ēnei āhuatanga e mahi pai ana hei whiringa mō ngā hangaenga pūnaha e hiahia ana ki te hanga i ngā hoahoa PCB matatini me ngā hoahoa iti.
Ko te tuhinga hou o ngā mahi kore-tāwhiti ka whakarerekētia te whakatū iwi rorohiko ahianui, ā, ko te Sn99Ag0.3Cu0.7 e tika ana hei whakamahere mō ēnei mahi. Ko te whakapapa kore-tāwhiti ka noho kore-kawe i te hoko i muri i te whakapai ki te iti i ngā pūngao flux, nā reira ka tiakina ngā wā me ngā rawa, ā, ka mau tonu ki ngā tikanga taiao. Ka puta te Sn99Ag0.3Cu0.7 i ngā pūngao iti kore e paheko ana i te pai me te rangatiratanga o ngā hononga whakapai, e whakaae ana ki ngā ture kore-tāwhiti. Kei roto i ngā tohutohu whenua e whai ake nei tēnei papa whakapai, ā, ka whakaae he whakamahi mō ngā mahi kore-tāwhiti, ka taea te whakauru ki ngā huarahi whakahaere taiao mo ngā rorohiko ahianui o tenei ao. Ko tana kawe mai i te whakaaetanga ka whakawhanake i te whakatū iwi rorohiko me te tautoko i te whakato i ngā rorohiko pai ake, haumaru ake.
RoHS (Restriction of Hazardous Substances) he whakariterite nui tēnei i roto i te whenua o ngā rīpora etarike ka mutuwhitiwhiti i te whakamahinga o ētahi momo huarere e pānuitia ana i ngā rīpora etarike. Ka whai kawa ngā taonga SnAgCu, ko ēnei e whai wāhitanga anō ki te kawa RoHS, whakamana i ngā wāhi hanga me te pai. Ki te mutuwhitiwhiti i ngā huarere, pērā i te pū, ka pakaru i ngā uiui hauora. I roto i ngā rīpora, he nui te noho pai a RoHS mō te whakahaere i te taiao, ā, ka whakaatu ngā kawa nei i ngā painga taiao o ngā taonga SnAgCu. Nā ngā pūrongo whakahaere, ka nui ake ngā āheinga ki te kawe pai, ka heke i te whiuwhiu ki te taiao, me te whakapakari i te haumaru i roto i ngā wāhi mahi.
Kei te whai mana ngā pēra tūhono SnAgCu mō tō rātou whakaawe i te kaiwhakamahi ea i ngā mahi tūhono aniwaniwa. Ki runga i ō rātou uku tūhono iti, e āwhina ana i te whakarite hīnati, e tiakina ana te kaiwhakamahi ea. Ki te tiakina i te kuhu ā-mahana e hiahiatia ana mō te tūhono, e āwhina ana ngā poroiti SnAgCu i ngā wā e tere ake ai te whakamaritanga, e whakaae ana ki ngā hua hei whakahaere i te ea. Nā ngā pūrongo mō ēnei whenua e whakamahi nei ngā poroiti SnAgCu, kei te whakaatu he hēnga nui o ngā tirotiro ea, e whakangungu ana i ngā tikanga whakamahere taonga matihiko paihere. Ko tēnei āhuatanga ea pai he taumata pai mō ngā whenua e hiahia ana ki te iti i ō rātou tohu karboni, ahakoa te whakahaere pai i ngā raeti whakamaritanga.
Kei roto i ngā pūnaha matihiko, ko te whakapakari tūmatawhiti o ngā kōmponenti he mea nui ki te whakaiti i te rama matihiko (e-waste). Ko ngā pūhoro tinana SnAgCu e whakapakari ana i te wā o mua mō ngā hunga matihiko, e hīnati ana i ngā whakatūhanga me ngā whakatikatika, ā, e iti ana i te e-waste. Ko ngā whenu matua o ngā tohu SnAgCu e tiaki ana i te mahi tūtika o ngā hunga matihiko i runga i ngā wā e hāngai ana, e whakaiti ana i ngā whiuwheiora. Ko ngā tatau o nāianei e whakaatu ana ko te e-waste he take nui mo te ao, me miliona o ngā tona kua hokohoko i te tau. Ko te whakamahi i ngā pūhoro SnAgCu ka taea te huri i te tai e whakapakari ana i te whanaketanga o ngā matihiko, ā, ka whakaae ki ngā mahi a te ao katoa mo te tiaki whenua.
Te whakamātau i ngā āhuatanga paepae hōiho ki waenganui i te SAC305 me te SAC307 e tūhono ana ki ngā pūtake moeke me te nohonga. Ko te SAC305 kei roto he 3.0% hōiho, nō reira ko te SAC307 e kore nei i te itinga o te hōiho, he wā ka whai ake i te 0.3%. Ko te nuinga nui ake o te hōiho i te SAC305 e whakapakari ana i ngā horopaki mekanika o te pūngao whakapuaki, e whaihua ana i te whiuwhiu ā-wera me te mana motuhake. Heoi anō, ka puta mai tēnei i te utu nui ake, nā reira ko te SAC307 he whiringa motuhake ake ahakoa te itinga hōiho, engari e tiakina tonu ana i ngā tahataha nohonga pai. Kua whakaatu ngā rorohiko whanaketanga materiana he mea nui te itinga hōiho ki te whatititi o te honunga whakapuaki, e āheinga ana ki te whakawātea i te honunga me te roanga mōkete i raro i te pā. E nui ana tēnei whakarite hōiho hei whakatika i te whakahaere me te utu pai o ngā pūngao whakapuaki i roto i te hanganga rorohiko.
Ko te hīnati o te SAC307, he mea tērā i runga anō i ngā pūtake hinu-tin-copper, nō te mea he pai ake tōna āhuatanga whakamahia me ngā hononga. Ko te SAC307 ka tautoko i te paihere kai rāwhiti, e whiwhi ana i te pai o ngā hononga tinana, e tiaki ana i te pai o ngā hononga, arā, he mea nui ki ngā whakahaere hiraka. He maimoa nui tēnei i runga i ngā pūtake tin-copper matua, e mahi atawhai ana i ngā wā e kore e pai ana te paihere kai rāwhiti, ka horomia nei ngā hononga. Kua whakaae ngā kaiwhakapono i roto i te marae me te whakarite ake o te SAC307 hei tautoko i te iti iho i ngā momo peka, me te whakangungu i te whakapai o ngā hononga tinana. Ko tōna tuhinga ko te tautoko i te whakamahi whakatika ki runga i ngā rāwheo tinana, he mea nui tēnei i roto i ngā wāwhanga hanga i te hiahia mō ngā hononga tūpato me te pai.
Ka tae atu ki te whakaarohia nga momo kaihanga me te oranga moni i roto i te whakahaere taiao nui o ngā PCB, ko SAC307 e whai ake nei i ngā pūtake tonu i tētahi atu. Ki te whakamahi i te SAC307, ka riro he iti i ngā hapa i te mahi hanga, e hokiwhiti ana ki te iti i ngā whakahoki me ngā whakatō anō, e hīnati ana i ngā utu nui. Kua hangaia tana whakaaetanga hei whai mana, ā, e whai ake nei i te wā e taea ai te whakatūpato i ngā rīpea me te iti i te whakawhitinga i ngā mātauranga. Hei tauira, i whakataritarihia tētahi tuhituhi hanga ki te SAC307, ka whakaputa i te mōhiohia i te iti i ngā uma hapa, ka hokiwhiti i ngā toru tekau e pā ana ki ngā utu hanga i runga i te hoko tauarahi. Ko tēnei he whakamārama i te mea ko te kawe i te whakapono ki te hanga paihere mona, pērā i te SAC307, e whakaiti ana i ngā moni mōhiohia i te mutunga, engari e whakapai hoki i te whanaketanga mahi me te whakaiti i ngā utu noho whenua, e whai ake nei i te whakaaetanga pai i roto i ngā taiao nui.
Te matatiti pūhanga No.4 kei roto i te pūhanga whakapā kōrero tētahi mahi nui i waenganui i te whakatakoto taonga me te hua pai ake mo ngā tono whakapā. Ko tēnei matatiti e hangaia hei āwhina i te whakamahere pai rawa o te pūhanga whakapā, ka noho whai take tēnei mo ngā raraunga iti-pauka. Ko te iti nei o ngā māngai e āwhina ana ki te hanga whakaaturanga me te pai rawa i ngā tūtohu whakapā, ka heke i te uiui o te whakapuaki, ka heke hoki i te rite i te wā o te whakamahi. Ko ngā rorohiko e whakaatu ana i te nui o te hunga matatiti i roto i ngā pūhanga whakapā, e whakaatu ana ko ngā māngai iti e āwhina ana ki te pai rawa o ngā momo whakahaere pai, ka whakapai i te katoa o ngā tūtohu whakapā.
Te whakamahinga iti o te kaihanga Sn99Ag0.3Cu0.7 he mea matua mo te whakangungu i te wharawhara o nga hononga kiore, e whakatū pū tata ki te whakatōpu i te tiari o nga hononga kiore. Ka heke te whakapakiri i nga hononga kiore, ina whai haurangi ranei i nga momo huruhuru rānei. Ko te whakahaere i te hanga o te Sn99Ag0.3Cu0.7 hei tirotiro i te whakaititia o te pakiri, kia mau tonu ai nga hononga nui me te tiari i roto i nga waewae matihiko. Ki te whakaatu i etahi kaihanga kiore kiore, ko tana whakamahinga iti ka nui ake i te pai i nga taiao whakapiki huarahi, kei reira te whakapakiti i te huringa waimā. Nga tohu hinonga haere no te whenua ka whakaae ki tana whakatutukitanga pai i te pakiri, ka kitea ia hei whirinaki whakanui mo nga whakahaere e hiahiatia ana te tiari.
Te whakaae ki te IPC-J-STD-004 he tohu i te pai me te tirotiro o tetahi pūkeke tāpiki, pērā i te Sn99Ag0.3Cu0.7. Ko tenei tauira e whakaatu ana i nga huringa mo te whakaritenga me te whakaaetanga o nga pūkeke tāpiki, ka taea te whakamana i te mea ka pai ai te pūkeke i nga paerewa matatika o te whenua. Ki te tiakina me te whakahaere pai, ka nui te hiranga mo te whakapuaki pai o te pūkeke. Me tiakina i roto i te wāhi māero, i waenganui i te 0-10°C, me te kawe ake i runga i te kauwhata hei whakatakoto i te wai. He take nui te IPC i nga rautaki whanui mo te tiakina o nga pūkeke tāpiki, kia mau tonu nga āhuatanga ki te wa o te whakamahi.
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