Amacala ngaphambili nangasemva kwisekethe pcb ngokwesiseko umaleko zobhedu. Ekwenziweni kweesekethe ze-pcb, kungakhathaliseki ukuba umaleko wobhedu ukhethiweyo kwixabiso leendleko eziguquguqukayo okanye ukudibanisa okuphindwe kabini kunye nokuthabatha, umphumo wokugqibela uyindawo egudileyo kunye neyokugcina. Nangona iipropathi ezibonakalayo zobhedu azivuyi njenge-aluminium, isinyithi, i-magnesium, njl., phantsi kwesiseko somkhenkce, ubhedu olucocekileyo kunye neoksijini zichaphazeleka kakhulu kwi-oxidation; ukuqwalasela ubukho be-co2 kunye nomphunga wamanzi emoyeni, ubuso bayo yonke ithusi Emva kokudibana negesi, ukusabela kwe-redox kuya kwenzeka ngokukhawuleza. Ukuqwalasela ukuba ubukhulu bomgangatho wobhedu kwisekethe ye-PCB buncinci kakhulu, ubhedu emva kwe-oxidation yomoya iya kuba yimeko yombane elinganayo, eya kulimaza kakhulu iimpawu zezixhobo zombane kuzo zonke iisekethe ze-PCB.

Ukuze uthintele ngcono i-oxidation yobhedu, kwaye ukwahlula ngcono ukuwelda kunye neenxalenye ze-welding ze-welding zesekethe ye-pcb ngexesha le-welding yombane, kwaye ukuze kugcinwe ngcono umphezulu wesekethe ye-pcb, iinjineli zobugcisa zenze i-Architectural eyodwa. Iingubo. Iingubo ezinjalo zezakhiwo zinokuxutywa ngokulula kumphezulu wesekethe ye-PCB, okukhokelela kubunzima bomgangatho okhuselayo omele ube mncinci kwaye uthintele ukudibana kobhedu kunye negesi. Lo maleko ubizwa ngokuba lubhedu, kwaye imathiriyeli ekrwada esetyenziswayo sisigqubuthelo sobuso