Ukufikelela njani kwiziphumo ezingcono ze-solder nge-lead-free reflow soldering

Ubushushu be-lead-free reflow soldering buphezulu kakhulu kunobushushu obusekwe kwi-lead-based reflow soldering.Ukusetwa kweqondo lobushushu le-lead-free reflow soldering nako kunzima ukulungisa.Ngokukodwa ngenxa yokuba i-lead-free-soldering reflow process window incinci kakhulu, ulawulo lomahluko weqondo lokushisa osecaleni lubaluleke kakhulu.Umahluko omkhulu weqondo lokushisa elisecaleni kwi-reflow soldering iya kubangela iziphene zebhetshi.Ke singawunciphisa njani umahluko weqondo lobushushu elisecaleni kwi-reflow soldering ukuze sifezekise isiphumo sokuthengisela esingenalo lead-free reflow?I-Chengyuan Automation iqala kwizinto ezine ezichaphazela i-reflow soldering effect.

1. Ukuhanjiswa komoya oshushu kwi-lead-free reflow soldering oven

Okwangoku, i-lead-free-reflow soldering ithatha indlela epheleleyo yokufudumeza umoya oshushu.Kwinkqubo yophuhliso lwe-oven yokuthengisa i-reflow, ukufudumeza kwe-infrared kuye kwabonakala.Nangona kunjalo, ngenxa yokufudumeza kwe-infrared, ukufunxwa kwe-infrared kunye nokubonakaliswa kwamacandelo emibala eyahlukeneyo yahlukile kwaye ngenxa yemvelaphi ekufutshane Isixhobo sivaliwe kwaye sivelisa umphumo wesithunzi, kwaye zombini iimeko ziya kubangela ukungafani kobushushu kunye nokubeka i-lead soldering emngciphekweni wokutsiba ngaphandle. yenkqubo yefestile.Ke ngoko, itekhnoloji yokufudumala kwe-infrared iye yapheliswa ngokuthe ngcembe kwindlela yokufudumeza i-oven soldering reflow.Kwi-solder-free soldering, kuyimfuneko ukubeka ingqalelo kwimpembelelo yokutshintshwa kobushushu, ngokukodwa kwizixhobo zangaphambili ezinomthamo omkhulu wokushisa.Ukuba ukugqithiswa kobushushu okwaneleyo akufumaneki, izinga lokunyuka kweqondo lokushisa liya kulahla kakhulu emva kwezixhobo ezinomthamo omncinci wokushisa, okubangelwa ukungafani kobushushu obusecaleni.Xa kuthelekiswa nokusetyenziswa kwe-oven egcweleyo eshushu ekhokelela ekubuyiseni i-oven, umahluko weqondo lobushushu elisecaleni le-lead-free reflow soldering iya kuncitshiswa.

2. Ulawulo lwesantya setsheyini lwe-oveni yokuphinda iphinde ibekho

I-lead-free reflow soldering chain control control iya kuchaphazela umahluko weqondo lobushushu elisecaleni lebhodi yesekethe.Ngokubanzi, ukunciphisa isantya setsheyini kuya kunika izixhobo ezinomthamo omkhulu wobushushu ixesha elininzi lokufudumeza, ngaloo ndlela kuncitshiswe umahluko wobushushu osecaleni.Kodwa emva kwayo yonke loo nto, ukusetwa kwejika lobushushu besithando somlilo kuxhomekeke kwiimfuno ze-solder paste, ngoko ke ukuncitshiswa kwesantya esilinganiselweyo akunanyani kwimveliso yangempela.Oku kuxhomekeke ekusebenziseni i-solder paste.Ukuba kukho amacandelo amaninzi amakhulu afunxa ubushushu kwibhodi yesekethe, Kumacandelo, kuyacetyiswa ukuba kuthotywe isantya setsheyini lokuthuthwa kwereflow ukuze amacandelo amakhulu etshiphu afunxe ngokupheleleyo ubushushu.

3. Ukulawulwa kwesantya somoya kunye nomthamo womoya kwi-oveni yokuqukuqela engenalothe

Ukuba ugcina ezinye iimeko kwi-oven ye-reflow reflow engatshintshiyo kwaye unciphisa kuphela isantya se-fan kwi-oven-free reflow oven ngama-30%, iqondo lokushisa kwibhodi yesiphaluka liya kuhla malunga ne-10 degrees.Kuyabonakala ukuba ukulawulwa kwesantya somoya kunye nomthamo womoya kubalulekile ekutshiseni ulawulo lobushushu.Ukuze kulawulwe isantya somoya kunye nomthamo womoya, amanqaku amabini kufuneka anikwe ingqwalasela, enokunciphisa umahluko weqondo lobushushu elisecaleni kwisithando somlilo esingahoyiyo kunye nokuphucula isiphumo sokuthengisa:

⑴Isantya sefeni kufuneka silawulwe kuguqulo lwamaza ukuze kuncitshiswe ifuthe lokuhla kwamandla ombane kuyo;

⑵ Ukunciphisa umthamo womoya wokukhutshwa kwesixhobo kangangoko kunokwenzeka, kuba umthwalo ophakathi womoya wokukhupha uhlala ungaqiniseki kwaye unokuchaphazela ngokulula ukuhamba komoya oshushu esithandweni.

4. I-lead-free reflow soldering inozinzo oluhle kwaye inokunciphisa ukuhluka kweqondo lokushisa kwisithando somlilo.

Nokuba sifumana iprofayili yeprofayile ye-oveni ekhokelela kwi-reflow, ukuyifeza kusafuna uzinzo, ukuphinda-phinda kunye nokuhambelana kwe-lead-free reflow soldering ukuyiqinisekisa.Ngokukodwa kwimveliso ekhokelayo, ukuba kukho ukukhukuliseka okuncinci ngenxa yezizathu zezixhobo, kulula ukutsiba ngaphandle kwefestile yenkqubo kwaye kubangele i-solder ebandayo okanye umonakalo wesixhobo sokuqala.Ke ngoko, abavelisi abaninzi ngakumbi baqala ukufuna uvavanyo lozinzo lwezixhobo.