Reflow oven zone tembiricha set up uye thermal profile

Iyo nzira yekupisa mhepo inoyerera solder inonyanya kupisa kupisa.Usati watanga "kubika" bhodhi rakanangwa, tembiricha yeoven zone inoda kugadzikwa.

Reflow oven zone tembiricha inzvimbo yakatarwa apo iyo inopisa element inozodziiswa kuti isvike iyi tembiricha set point.Iyi ndiyo yakavharwa loop control process uchishandisa yemazuva ano PID control concept.Iyo data yekushisa kwemhepo inopisa yakatenderedza iyi chaiyo kupisa chinhu inodzoserwa kune controller, iyo inosarudza kubatidza kana kudzima kupisa kwesimba.

Pane zvinhu zvakawanda zvinokanganisa kugona kwebhodhi kudziya chaiko.Zvinhu zvikuru ndezvi:

1. Yekutanga PCB tembiricha

Mune akawanda emamiriro ezvinhu, yekutanga PCB tembiricha yakafanana neyekamuri tembiricha.Iyo yakakura mutsauko pakati pePCB tembiricha uye tembiricha yekamuri yehovhoni, nekukurumidza iyo PCB board inowana kupisa.

1. Reflow oven chamber tembiricha

Reflow oven chamber tembiricha ndiyo tembiricha yemhepo inopisa.Inogona kunge yakabatana nehovhoni yekumisa tembiricha zvakananga;zvisinei, hazvina kufanana nekukosha kwekugadza poindi.

1. Thermal resistance yekupisa kupisa

Zvese zvinhu zvine thermal resistance.Simbi dzine kushomeka kwekupisa pane zvisiri zvesimbi, saka huwandu hwePCB maseru uye ukobvu hwecooper huchakanganisa kutamisa kupisa.

1. PCB thermal capacitance

PCB thermal capacitance inokanganisa kugadzikana kwekupisa kwebhodhi rakanangwa.Ndiyo zvakare yakakosha parameter mukuwana mhando soldering.Iyo PCB ukobvu uye zvikamu 'thermal capacitance ichakanganisa kupisa kwekufambisa.

Mhedziso ndeiyi:

Oven setup tembiricha haina kunyatsofanana nePCB tembiricha.Paunenge uchida kukwenenzvera reflow chimiro, unofanirwa kuongorora maparamendi ebhodhi senge bhodhi ukobvu, ukobvu hwemhangura, uye zvikamu pamwe nekujairana nekugona kwehovhoni yako yekuyerera.