Am pròiseas cruinneachaidh no saothrachadh a bòrd cuairteachaidh clò-bhuailte (PCB) a ’toirt a-steach mòran cheumannan. Bu chòir na ceumannan sin uile a dhol làmh ri làimh gus deagh chruinneachadh PCB (PCBA) a choileanadh. Tha an co-obrachadh eadar aon cheum agus an tè mu dheireadh glè chudromach. A bharrachd air an sin, bu chòir don chur-a-steach fios air ais fhaighinn bhon toradh, a tha ga dhèanamh nas fhasa mearachdan sam bith a lorg agus fhuasgladh aig ìre thràth. Dè na ceumannan a tha an sàs ann an co-chruinneachadh PCB? Leugh air adhart gus faighinn a-mach.

Ceumannan an sàs ann am pròiseas cruinneachaidh PCB

PCBA and the manufacturing process involve many steps. To obtain the best quality of the final product, perform the following steps:

Ceum 1: Cuir paste solder ris: Is e seo fìor thoiseach a ’phròiseas cruinneachaidh. At this stage, paste is added to the component pad wherever welding is required. Cuir am pas air a ’phloc agus steig e san t-suidheachadh cheart le cuideachadh bhon pad. This screen is made from PCB files with holes.

Step 2: Place the component: After the solder paste is added to the pad of the component, it is time to place the component. The PCB passes through a machine that places these components precisely on the pad. The tension provided by the solder paste holds the assembly in place.

Ceum 3: Fùirneis reflux: Tha an ceum seo air a chleachdadh gus am pàirt a chuir air a ’bhòrd gu maireannach. Às deidh na pàirtean a chuir air a ’bhòrd, bidh am PCB a’ dol tro chrios giùlain an fhùirneis reflux. The controlled heat of the oven melts the solder added in the first step, permanently connecting the assembly.

Step 4: Wave soldering: In this step, the PCB is passed through a wave of melted solder. Stèidhichidh seo ceangal dealain eadar an solder, pad PCB agus luaidhe phàirtean.

Step 5: Cleaning: At this point, all welding processes have been completed. Rè an tàthadh, faodaidh tòrr fuigheall flux a bhith timcheall air a ’cho-phàirt solder. Mar a tha an t-ainm a ’ciallachadh, tha an ceum seo a’ toirt a-steach a bhith a ’glanadh fuigheall flux. Clean flux residue with deionized water and solvent. Tron cheum seo, thèid co-chruinneachadh PCB a chrìochnachadh. Subsequent steps will ensure that the assembly is completed correctly.

Ceum 6: Deuchainn: Aig an ìre seo, tha am PCB air a chruinneachadh agus bidh an sgrùdadh a ’tòiseachadh a’ dèanamh deuchainn air suidheachadh nam pàirtean. Faodar seo a dhèanamh ann an dà dhòigh:

L Stiùireadh: Mar as trice bidh an sgrùdadh seo air a dhèanamh air pàirtean beaga, chan eil an àireamh de phàirtean nas motha na ceud.

L fèin-ghluasadach: Dèan an sgrùdadh seo gus dèanamh cinnteach gu bheil droch cheanglaichean, co-phàirtean lochtach, co-phàirtean ceàrr, msaa.