PCB isekethe evulekileyo yingxaki abavelisi be-PCB abaza kudibana nayo phantse yonke imihla, ebisoloko iphazamisa imveliso kunye nabasebenzi bolawulo lomgangatho. Iingxaki ezibangelwe yiyo zizalisa izinto ngenxa yokungonelanga kokuthunyelwa, ukulibaziseka kokuhambisa kunye nezikhalazo zabathengi, ekunzima ukusonjululwa ngabangaphakathi kwishishini.

Isekethe evulekileyo ye-PCB ngamanqaku amabini (A no-B) ekufuneka exhunywe, kodwa angaxhunyiwe.

Iimpawu ezine zesekethe ezivulekileyo

1. Ukuphindaphindwa kwesekethe evulekileyo

Ibonakaliswe kwisekethe efanayo evulekileyo kwindawo enye phantse kuyo yonke ibhodi ye-PCB, ephindaphindwa amaxesha amaninzi, kwaye inani lezinto ezichaziweyo ziyafana. Isizathu sokuyilwa kukuba ipleyiti yokuvezwa ineziphene kwindawo efanayo nesekethe evulekileyo yebhodi. Kule meko, ipleyiti yokuvezwa kufuneka ikhutshwe, kwaye ukufunyanwa kwe-AOI yebhodi yokuqala neyokugqibela kufuneka yomelezwe ukuqinisekisa ukuba ibhodi yokuqala ye-PCB ichanekile ngaphambi kokuvezwa.

2. Isithuba sivulekile

Uphawu lwale sekethe ivulekileyo kukuba kukho inotshi ocingweni, kwaye ububanzi bomgca oshiyekileyo bungaphantsi okanye bulingana no-1/2 wobubanzi bomgca oqhelekileyo ngenxa yenotshi, ihlala ikwindawo emiselweyo, ibonisa into ephindaphindwayo. Oku kubangelwa sisiphene kwipleyiti yokuvezwa, ukuze ibhodi ye-PCB ikwanaso isikhewu kwindawo enye yocingo. UPetter PCB xiaobian ucebisa ukuba indlela yokuphelisa kukutshintsha ifilimu entsha, kwaye yomeleze ukufunyanwa kwe-AOI kwinkqubo yokuvezwa.

3. Vala isekethe evulekileyo

Kwindawo ethile, kukho iingcingo ezininzi ezibonisa ubucukubhede obuncitshisiweyo (ngokuthe ngcembe ukucheba), ezinye zivulekile, ezinye azivulwanga, kodwa iingcingo zibhityile (zingaphantsi kobubanzi obuncinci beengcingo obufunwa ngumthengi) kwaye kufuneka zikhutshiwe. Isizathu sesi siphene kukuba unxibelelwano phakathi kwefilimu kunye nefilimu eyomileyo esetyenziswa ngumenzi wePCB yokuvezwa ayikusondelanga ngokwaneleyo, kwaye kukho umoya embindini, oko kukuthi, ukucocwa akulungile emva kokuba itafile yokuvezwa ivaliwe , kwaye isidanga sokucoca asinakho ukuhlangabezana neemfuno, ezikhokelela ekucoleni ngocingo okanye kwisekethe evulekileyo ngexesha lokuvezwa.

4. Vula okuvulekileyo

Uphawu lwayo kukwazi ukubona umkhondo ocingo olukrwitshiweyo ngamandla angaphandle ngokucacileyo, ikwabangela isekethe evulekileyo. Isizathu singenxa yokusebenza okungalunganga (umzekelo, indlela engeyiyo yokuthatha ibhodi ngexesha lokuveliswa kwePCB) okanye unobangela womatshini, kwaye ucingo lukrunekile ukwenza isekethe evulekileyo.

Ngenxa yoonobangela abanzima beziphene zesekethe zangaphandle, zininzi iimeko ezinokwenzeka, ezingadweliswanga apha, kodwa uninzi lweziphene zenzeka kubhedu olunxibe ipleyiti, ifilimu, ifilimu eyomileyo kunye nezinye izinto, okanye ekuvezeni, ukukhula, ukuhlahlela kunye nezinye iinkqubo ezingaqhelekanga.