A halin yanzu, akwai nau’ikan iri -iri Kwamitin PCB a kasuwa cikin launuka iri -iri masu haske. Ƙarin allon allon PCB sune kore, baƙi, shuɗi, rawaya, shunayya, ja da launin ruwan kasa, wasu masana’antun kuma sun ƙirƙira farar fata, ruwan hoda da sauran launuka daban -daban na PCB.

Gabatarwar allon PCB launi daban -daban

Gabaɗaya an yi imanin cewa PCB baƙar fata da alama an sanya shi a babban ƙarshen, yayin da aka tanada ja, rawaya da sauransu don ƙarancin ƙarshen. Shin hakan gaskiya ne?

A cikin samar da PCB, murfin jan ƙarfe, ko aka yi ta ƙari ko ragi, ya ƙare tare da shimfida mai santsi da rashin kariya. Kodayake kaddarorin sunadarai na jan ƙarfe ba su da ƙarfi kamar aluminium, baƙin ƙarfe, magnesium da sauransu, amma a yanayin ruwa, jan ƙarfe mai kyau da hulɗa da iskar oxygen ana sauƙaƙe su; Saboda kasancewar iskar oxygen da tururin ruwa a cikin iska, saman jan ƙarfe mai tsabta zai yi oxide da sauri idan an haɗa shi da iska. Saboda kaurin jan ƙarfe a cikin allon PCB yana da kauri sosai, jan ƙarfe da aka ƙera zai zama mummunan madubin wutar lantarki, wanda zai lalata aikin wutar lantarki gaba ɗaya na PCB.

Don hana iskar ƙarfe na jan ƙarfe, don rarrabe sassan walƙiya da marasa walƙiya na PCB yayin walda, kuma don kare saman allon PCB, injiniyoyin ƙira sun haɓaka murfi na musamman. Ana iya amfani da wannan murfin a sauƙaƙe akan farfajiyar allon PCB, yana yin murfin kariya na wani kauri kuma yana toshe lamba tsakanin jan ƙarfe da iska. Wannan Layer na rufi ana kiranta solder blocking kuma kayan da ake amfani da shi shine solder blocking paint.

Idan an kira fenti, dole ne ya zama launi daban. Ee, ana iya yin fenti mai siyarwa mara launi kuma mai haske, amma PCBS galibi suna buƙatar buga ƙaramin rubutu akan jirgi don sauƙaƙewa da sarrafawa. Fentin juriya na siyarwa na iya nuna asalin PCB kawai, don haka ko masana’anta, kulawa ko tallace -tallace, bayyanar ba ta da kyau. Don haka injiniyoyi suna ƙara launuka iri -iri ga solder tsayayyen fenti, wanda ke haifar da PCBS baƙar fata ko ja ko shuɗi. Koyaya, yana da wahalar ganin wayoyin PCB baƙar fata, don haka za a sami wasu matsaloli a cikin kulawa.

Daga wannan ra’ayi, launi allon PCB da ingancin PCB ba dangantaka ce. Bambanci tsakanin PCB baƙar fata da PCB mai shuɗi, PCB mai rawaya da sauran PCB launi yana cikin launi na juriya akan goga ta ƙarshe. Idan an ƙera PCB kuma an ƙera shi daidai iri ɗaya, launi ba zai yi wani tasiri a kan aiki ba, kuma ba zai yi wani tasiri ba game da watsawar zafi. Dangane da PCB mai baƙar fata, wayoyin sa na kusan an rufe su gaba ɗaya, wanda ke haifar da manyan matsaloli ga kulawa ta gaba, don haka bai dace sosai don ƙera da amfani da launi ba. Don haka, a cikin ‘yan shekarun nan, mutane sannu a hankali suna yin garambawul, suna watsi da amfani da fenti na waldi baƙar fata, don amfani da koren duhu, launin ruwan kasa mai duhu, shuɗi mai duhu da sauran fenti na waldi, manufar ita ce sauƙaƙe masana’antu da kiyayewa.

Da yake magana, wanda a zahiri mun fahimci matsalar launi PCB. Dangane da maganar cewa “launi yana wakiltar babban daraja ko ƙaramin daraja”, saboda masana’antun suna son yin amfani da PCB baƙar fata don ƙera samfura masu ƙima, kuma suna amfani da ja, shuɗi, kore, rawaya da sauran samfuran ƙananan kayayyaki.Kammalawa shine: samfurin yana ba da ma’anar launi, maimakon launi yana ba da ma’anar samfur.