Ngaphantsi kwaziphi iimeko obeka amaqondo okushisa ahlukeneyo kwi-TOP kunye ne-Ezantsi izinto zokufudumeza ze-oven yokuphinda?
Kwiimeko ezininzi, i-thermal setpoints ye-oven reflow iyafana kuzo zombini izinto zokufudumeza eziPhezulu kunye nezantsi kwindawo efanayo.Kodwa kukho iimeko ezikhethekileyo apho kuyimfuneko ukusebenzisa izicwangciso zokushisa ezahlukeneyo kwi-TOP kunye ne-BOTTOM elements.Injineli yenkqubo ye-SMT kufuneka iphonononge iimfuno ezithile zebhodi ukumisela useto oluchanekileyo.Ngokubanzi, nazi izikhokelo zokuseta ubushushu bento yokufudumeza:
- Ukuba kukho umngxuma (TH) amacandelo ebhodini, kwaye ufuna ukuwahambisa kwakhona kunye namacandelo e-SMT kunye, unokufuna ukucinga ngokunyusa ubushushu bento esezantsi kuba amacandelo e-TH aya kuvala ukujikeleza komoya oshushu kwicala eliphezulu, ukuthintela ubushushu bento esezantsi. iipads phantsi kwamacandelo TH ukusuka ekufumaneni ubushushu obaneleyo ukwenza i-solder edibeneyo.
- Uninzi lwezindlu zekhonkco ze-TH zenziwe ngeplastiki eya kunyibilika xa ubushushu bunyuke kakhulu.Injineli yenkqubo kufuneka yenze uvavanyo kuqala kwaye iphonononge umphumo.
- Ukuba kukho amacandelo amakhulu e-SMT afana ne-inductors kunye ne-aluminium capacitors ebhodini, kuya kufuneka kwakhona ucinge ngokuseta amaqondo okushisa ahlukeneyo ngesizathu esifanayo nezixhumi ze-TH.Injineli kufuneka iqokelele idatha ye-thermal yesicelo sebhodi ethile kwaye ilungelelanise iprofayili ye-thermal ngamaxesha amaninzi ukuze ibone amaqondo okushisa achanekileyo.
- Ukuba kukho amacandelo kumacala omabini ebhodi, kunokwenzeka ukuseta amaqondo obushushu ahlukeneyo.
Okokugqibela, injineli yenkqubo kufuneka ijonge kwaye yandise iprofayile yobushushu kuyo yonke ibhodi ethile.Iinjineli ezisemgangathweni kufuneka zibandakanyeke ukuze zihlole i-solder joint.Umatshini wokuhlola i-x-reyi unokusetyenziselwa uhlalutyo olongezelelweyo.
Ixesha lokuposa: Jul-07-2022