Umzi-mveliso wokuVelisa i-Oven ye-SMT Reflow

Yintoni i-oven ye-SMT reflow?

I-oven ye-reflow ye-SMT sisixhobo esinika indawo yokufudumala ukunyibilikisa i-solder paste ukwenzela ukuba i-surface mount components kunye ne-PCB pads inokudibaniswa ngokuthembekileyo nge-solder paste alloy.

Zingaphi iintlobo zee-oveni zokugalela kwakhona kwe-SMT ezikhoyo?

Iindidi eziphambili zee-ovens ze-SMT zokubuyisela kwakhona zibandakanya ii-ovens zokuvuselela umoya oshushu, ii-ovens ze-infrared reflow ovens, ii-ovens ezigcweleyo zokufudumeza umoya oshushu, ii-ovens zokukhusela i-nitrogen, njl.

1. I-oven yokubuyisela umoya oshushu: Le oven yokubuyisela kwakhona isebenzisa umoya oshushu ukwenza iqondo lokushisa kwi-oven libe lifana ngakumbi, ligqithise ukuhluka kobushushu bendawo kunye nefuthe elikhuselayo lokuphindaphinda kwe-infrared. Ii-ovens zokubuyisela umoya oshushu zifanelekile kwindibano yoxinaniso oluphezulu, olunokuqinisekisa ubushushu obufanayo beePCBs kunye namacandelo kunye nokuphucula umgangatho we-welding.

2. I-oven ye-infrared reflow: Ii-ovens ze-infrared reflow zisebenzisa iimpawu zokungena okunamandla kwe-infrared, ukufudumala okuphezulu kunye nokugcinwa kwamandla. Nangona kunjalo, ngenxa yamazinga ahlukeneyo okufunxa imitha ye-infrared ngezinto ezahlukeneyo, amaqondo obushushu angalinganiyo angenzeka. Ii-ovens ze-infrared reflow zifanelekile ukufudumeza ngokudibeneyo kwee-substrates zendibano ezihlangene kabini.

3. I-oveni egcweleyo yokubuyisela umoya oshushu: I-oveni egcweleyo eshushu yokuqukuqela komoya inyanzelisa ukujikeleziswa komoya ngombhobho wejethi yokuhambisa okanye ifeni ekwaziyo ukumelana nobushushu ukuze kuphunyezwe ukufudumeza kwamalungu adityanisiweyo. Le ndlela yoyisa ngokupheleleyo ingxaki yomahluko wobushushu bendawo yokuqukuqela kwakhona kwe-infrared, kodwa inokubangela i-jitter yebhodi yesekethe eprintiweyo kunye nokufuduswa kwamalungu.

4. I-oven yokukhusela i-nitrogen yokubuyisela kwakhona i-oven yenza i-welding phantsi kweemeko zokukhusela i-nitrogen ukukhusela i-oxidation kunye nokuphucula amandla okumanzisa. I-oven yokukhusela i-nitrogen yokukhusela i-oven ifanelekile kwi-teknoloji ye-high-density assembly, inokulungisa amacandelo angahambelaniyo, ukunciphisa ubuhlalu be-solder, kwaye ifanelekile kwiinkqubo zokucoca.

Imisebenzi ephambili ye-oven yokubuyisela kwakhona

Umsebenzi oyintloko we-oven ye-SMT yokubuyisela i-oven kukunyibilikisa i-solder paste ngokufudumeza ngokubonelela ngemeko yokufudumala, ngaloo ndlela idibanisa ngokuthembekileyo i-surface mount components kunye ne-PCB pads.

1. Inqanaba lokufudumala: Fudumeza ibhodi yePCB ngokulinganayo ukuze uvule i-solder paste kwaye ugweme i-welding engafanelekanga ebangelwa ukufudumeza ngokukhawuleza kobushushu obuphezulu.

2. Inqanaba lokufakwa kwe-insulation: Qinisekisa ukuba ubushushu bebhodi ye-PCB kunye namacandelo azinzile, i-flux i-volatilized ngokupheleleyo, kwaye amaqamza ayaphetshwa ngexesha le-welding.

3. Inqanaba lokufudumeza kwakhona: Iqondo lokushisa le-heater likhuphukela phezulu, iqondo lokushisa lecandelo likhuphuka ngokukhawuleza kwiqondo lokushisa eliphezulu, kwaye i-welding igqityiwe.

4. Inqanaba lokupholisa: Hlanganisa i-solder joints ukuqinisekisa umphumo we-welding.

Ngawaphi amanyathelo okhuseleko kwii-oveni zokugalela kwakhona kwe-SMT?

Izilumkiso eziphambili kwii-ovens ze-SMT zokubuyisela kwakhona ziquka ukugcinwa kwezixhobo, ukhuseleko lokusebenza kunye nokugcinwa kwemihla ngemihla.

Ukugcinwa kwezixhobo

1. Ukucocwa kwansuku zonke: Emva kokuphela kwemveliso yonke imihla, izixhobo zokuphinda zihlambuluke kufuneka zihlambuluke ngokucokisekileyo ukuze kugcinwe umphezulu wezixhobo ngaphandle kokungcola12.

2. Ukuhlolwa rhoqo: Jonga rhoqo ukunxiba kwamacandelo afana namabhanti okuhambisa, izinto zokufudumeza, iifeni, iinkqubo zokuhambisa kunye nezixhobo zokulawula ubushushu, kwaye uzibuyisele njengoko kufuneka1.

3. Iiparamitha zokulinganisa: Rhoqo ulungelelanisa imilinganiselo yokushisa kunye nesantya se-oven reflow ukuqinisekisa ukuba izixhobo ziyakwazi ukulawula ngokuchanekileyo ubushushu kwaye zilungelelanise isantya sebhanti yokuhambisa ngokweemfuno zenkqubo echazwe kwangaphambili ukuqinisekisa umgangatho kunye nokuhambelana kwe-welding1.

Ukhuseleko lomsebenzi

1. Ukucima umbane kunye nokukhupha: Ngaphambi kokuba wenze ukugcinwa kwe-oven yokubuyisela kwakhona, qiniseka ukuba uqhawule ukunikezelwa kwamandla e-oven reflow, qinisekisa ukuba i-oven yokubuyisela iphelile ngokupheleleyo, kwaye ususe ukushisa okushiyekileyo kunye ne-exhaust3.

2. Nxiba izixhobo zokukhusela: Ngexesha lokulungiswa, amagcisa afanele anxibe izixhobo ezifanelekileyo zokuzikhusela, njengeeglavu ezikwaziyo ukumelana nobushushu, iiglasi zokhuseleko, iimpahla zokusebenza, njl.njl.

3. Kuphephe ukubamba imiphezulu eshushu: Kukho iindawo ezininzi ezinobushushu obuphezulu ngaphakathi kwi-oven ephinda igcwale. Kuphephe ukubaphatha ngqo ngezandla zakho ngexesha lokulondolozwa ukuphepha ukutsha 3.

4. Sebenzisa izixhobo ezifanelekileyo: Ngexesha lokugcinwa kwe-oven yokuphinda iqhume, izixhobo ezifanelekileyo kunye nezixhobo kufuneka zisetyenziswe ukuphepha ukubamba okanye ukusebenzisa izixhobo ngeminwe okanye ezinye izixhobo ezingafanelekanga 3.

5. Nika ingqalelo ekusetyenzisweni kweekhemikhali: Ukuba iikhemikhali ziyafuneka ukuze zilondolozwe, qiniseka ukuba uzisebenzisa kwindawo engena umoya kwaye uzisebenzise kwaye uzigcine ngendlela echanekileyo ukunqanda ukwenza umonakalo emzimbeni okanye ukungcolisa indalo 3.

Ulondolozo lwemihla ngemihla

1. Jonga unikezelo lwamandla kunye nokubeka umhlaba: Phambi kokuba uqalise, jonga ukuba unikezelo lwamandla kunye neengcingo ezisezantsi zesixhobo ziqhagamshelwe ngokuthembekileyo ukuqinisekisa ukhuseleko 24.

2. Khangela ingaphakathi lesithando somlilo: Ngaphambi kokuba uqalise, khangela i-oven cavity ukuqinisekisa ukuba akukho zinto zangaphandle ngaphakathi kwesixhobo, ngakumbi xa ixesha lokungena okanye ibhodi yesekethe iwela esithandweni, kufuneka ihlambuluke kwaye iphinde isethwe ngexesha. 45.

3. Ukugcinwa rhoqo kunye nokulungiswa kwakhona: Hlola rhoqo kwaye ugcine amacandelo ahlukeneyo ezixhobo, ngokukodwa ucingo lokufudumeza kunye nebhanti yokuhambisa, ukuqinisekisa ukusebenza kwabo okuqhelekileyo4.

4. Nika ingqalelo kwimotor yomoya oshushu: Xa uqalisa i-reflow soldering, qala ujonge ukuba isandi semoto yomoya oshushu asiqhelekanga, kwaye uqinisekise ukuba ibhanti lokuhambisa liqhelekile ngexesha lothutho kwaye akukho mzila4.

Ngokulandela ezi zilumkiso, ukusebenza okuqhelekileyo kunye nokhuseleko lokusebenza kwe-oven ye-SMT reflow i-oven inokuqinisekiswa ngokufanelekileyo.

Uyigcina njani i-oven ye-SMT reflow

Umxholo ongundoqo wokugcinwa kwe-oven ye-SMT yokubuyisela kwakhona iquka ukucocwa rhoqo, ukuhlolwa kunye nokutshintshwa kweendawo ezisengozini, ukulinganisa ubushushu kunye neeparamitha zesantya, kunye nokugcinwa rhoqo kunye nokuqeqeshwa kwabaqhubi. La manyathelo ayimfuneko ekuqinisekiseni impumelelo kunye nomgangatho wemveliso.

Okokuqala, ukucocwa rhoqo ngomnye wamanyathelo asisiseko ekugcineni izixhobo zokuthambisa. Emva kokuphela kwemveliso yonke imihla, izixhobo kufuneka zicocwe ngokucokisekileyo ukuze zisuse iintsalela eziqokelelweyo kunye nokungcola, ngakumbi kwibhanti yokuhambisa, indawo yokufudumala kunye nendawo yokupholisa. Ukongezelela, kuyimfuneko kwakhona ukucoca ngaphakathi kwesithando somlilo kunye nemibhobho yendawo yokupholisa, enokucocwa kunye ne-ultrasonic cleaner kunye ne-agent yokucoca.

Okwesibini, ukuhlolwa kunye nokutshintshwa kweendawo ezisengozini nazo ziyinxalenye ebalulekileyo yokugcinwa. Izixhobo ezinje ngabahambisi, izinto zokufudumeza, iifeni, iinkqubo zokuqhuba, kunye nezixhobo zokulawula ubushushu kufuneka zijongwe rhoqo ukuba zinxitywe kwaye zitshintshwe njengoko zifuneka.

Ukulinganisa ubushushu kunye neeparamitha zesantya ngundoqo ekuqinisekiseni umgangatho we-soldering. Rhoqo ukulinganisa ubushushu kunye neeparamitha zesantya se-oven reflow ukuqinisekisa ukuba izixhobo ziyakwazi ukulawula ngokuchanekileyo ubushushu ngokweemfuno zenkqubo echazwe kwangaphambili, kwaye ulungelelanise isantya sokuhambisa ukuqinisekisa umgangatho kunye nokuhambelana kwe-soldering.

Ngokubhekiselele kukhuseleko lwabasebenzi, ezi ngongoma zilandelayo kufuneka ziqatshelwe xa kugcinwa i-oven reflow: ukucima umbane kunye nokukhupha, ukuqinisekisa ukupholisa izixhobo, ukusebenzisa izixhobo zokukhusela umntu, ukuphepha ukubamba indawo eshushu, ukusebenzisa izixhobo ezifanelekileyo, ukubeka ingqalelo ekusebenziseni imichiza, kwaye ufumane. uqeqesho.

Okokugqibela, ukugcinwa rhoqo kunye noqeqesho lwabaqhubi nazo ziyinxalenye ebalulekileyo yogcino. Ukongeza kugcino lwemihla ngemihla, ii-oveni zokuphinda ziphinde ziphinde zifune ukulungiswa rhoqo kunye nokulungiswa ngokutsha, okunokufuna amagcisa aqeqeshiweyo. Kwangaxeshanye, qinisekisa ukuba abaqhubi bafumana uqeqesho olufanelekileyo kwaye bayayiqonda indlela yokusebenzisa ngokufanelekileyo izixhobo kunye nokwenza imisebenzi yogcino lwemihla ngemihla.

Ziziphi iziphumo zokugcinwa ngokungafanelekanga kwee-oveni ze-SMT zokugalela ngokutsha?

Ukugcinwa ngokungafanelekanga kwee-ovens ze-SMT zokugalela kwakhona kunokukhokelela kwimiphumo eyahlukeneyo, kubandakanywa ukungaphumeleli kwezixhobo, ukunciphisa ukusebenza kakuhle kwemveliso, kunye neengxaki zomgangatho wemveliso. Ezi ziphumo aziyi kuchaphazela kuphela inkqubela yemveliso, kodwa zinokuba nefuthe elibi kumgangatho kunye nokhuseleko lweemveliso.

Okokuqala, ukugcinwa okungafanelekanga kunokukhokelela ekungasebenzini kwesixhobo. Ngokomzekelo, ukuba inkqubo yokulawula ubushushu besixhobo sokuthengisa i-reflow ayiphumelelanga, inokubangela ubushushu obungazinzanga, nto leyo echaphazela umgangatho we-welding. Ukongeza, ukuba ikhonkco kunye neegiya zesixhobo azinalubrication kunye nokugcinwa ngokufanelekileyo, kunokubangela ukuba isixhobo sisebenze kakubi okanye sonakaliswe.

Okwesibini, ukugcinwa okungafanelekanga nako kunokukhokelela ekunciphiseni ukusebenza kakuhle kwemveliso. Ngokomzekelo, ubushushu obungalinganiyo besixhobo sokuphinda sitshatyalaliswe kunokubangela ukuba i-soldering engaphelelanga, ifune ukuphinda kufakwe i-soldering, ngaloo ndlela yandisa umjikelo wemveliso. Ukongeza, ukusilela kwesixhobo kunokubangela ukuvalwa komgca wemveliso, okuchaphazela ngakumbi ukusebenza kakuhle kwemveliso.

Ekugqibeleni, ukugcinwa okungafanelekanga kunokuba nefuthe elibi kumgangatho wemveliso. Umzekelo, ukulawulwa kobushushu obungachanekanga kunokubangela iziphene ze-soldering ezifana ne-cold soldering kunye ne-cold soldering, ezinokuchaphazela ukusebenza kombane kunye nokuthembeka kwemveliso. Ukongeza, iintsalela kunye neengxaki zokufuma kwisixhobo zinokubangela ukusebenza okungazinzanga okanye ukungaphumeleli kwemveliso ngexesha lokusetyenziswa.

Kutheni ukhetha ukuba sithenge i-oven ye-SMT reflow?

1. Inkampani inamakhulu ee-ovens ze-SMT zokubuyisela kwakhona kwisitokhwe unyaka wonke, kwaye zombini umgangatho wezixhobo kunye nexesha elifanelekileyo lokuhanjiswa liqinisekisiwe.

2. Sineqela lobuchwephesha leengcali ezinokubonelela ngeenkonzo zobugcisa zodwa-stop ezifana nokufuduswa, ukulungiswa, ukugcinwa, ukuphuculwa kwesoftware, kunye noqeqesho lobugcisa lwee-oveni ze-SMT zokugalela kwakhona.

3. Akukhona nje kuphela ukuba sinezixhobo ezintsha kunye nezangaphambili kwi-stock, sinazo izixhobo zasekhaya. Sinomzi-mveliso wethu wokuzivelisa, nto leyo eye yanceda abathengi banciphisa iindleko zokusebenza kunye nokwandisa imida yengeniso ukuya kumlinganiselo omkhulu.

4. Iqela lethu lobugcisa lisebenza iiyure ezingama-24 ngosuku nobusuku. Kuzo zonke iingxaki zobuchwepheshe eziqubisana neefektri ze-SMT, iinjineli zinokucwangciswa ukuba ziphendule zikude nanini na. Ngeengxaki zobugcisa ezintsonkothileyo, iinjineli eziphezulu zinokuthunyelwa ukuba zibonelele ngeenkonzo zobugcisa kwisiza.

Isishwankathelo, i-oven yokubuyisela ngokungathandabuzekiyo sisixhobo esibaluleke kakhulu kwi-SMT. Xa ukhetha ababoneleli abafanayo, ngaphezu kwe-inventory kunye neenzuzo zexabiso, ingqalelo ekhethekileyo kufuneka ihlawulwe ukuba ngaba umthengisi uneqela lezobugcisa bezobugcisa, elidlala indima ebalulekileyo kwimveliso eqhelekileyo yezixhobo kwixesha elizayo.