I-PCBA kunye nokulungisa i-SMT ngokubanzi zineenkqubo ezimbini, enye yinkqubo yasimahla ekhokelayo kwaye enye yinkqubo ekhokelayo. Wonke umntu uyazi ukuba ukukhokela kuyingozi ebantwini. Ke ngoko, inkqubo yasimahla ekhokelayo ihlangabezana neemfuno zokukhusela isisingqongileyo, eyona nto iphambili kunye nokhetho olungafezekanga kwimbali. . Asicingi ukuba izityalo ze-PCBA zePCBA zingezantsi komgangatho (ngezantsi imigca engama-20 ye-SMT) ikwanokwamkela ii-odolo zokwenza izinto ezifumanekayo nezikhokelayo, kuba iinkqubo phakathi kwezixhobo, izixhobo kunye neenkqubo zonyusa kakhulu iindleko kunye nobunzima. Andazi ukuba kulula kangakanani ukwenza inkqubo yasimahla yendlela.
Apha ngezantsi, umahluko phakathi kwenkqubo ekhokelayo kunye nenkqubo yasimahla yokukhokela ishwankathelwe ngokufutshane ngolu hlobo lulandelayo. Kukho ezinye iinzululwazi, kwaye ndiyathemba ukuba ungandilungisa.

1. Ubume be-alloy yahlukile: Inkqubo yesiqhelo ye-tin ye-tin i-63/37, ngelixa i-ALC-Figh-Figh-Figh-Figh-Figh-Figh-Al: 96%, i-cu: 0.5%. Inkqubo yasimahla yokukhokela ayinakuqinisekiswa ngokupheleleyo ukuba ifumaneka ngokupheleleyo, iqulethe kuphela umxholo ophantsi kakhulu wokukhokela, njengokukhokelela ngezantsi kwe-500 PPM.

2. Iindawo ezahlukileyo zokunyibilika: Indawo yokunyibilika ye-tin i-180 ° ~ 185 ° kunye neqondo lobushushu limalunga nama-240 ° 1 nye. Inqaku lokunyibilika le-tin elisimahla le-210 ~ ~ 235 ° kunye neqondo lobushushu lingama-245 ° ~ 280 °. Ngokwamava, kuba qho nge-8% -10% yonyuso kumxholo we-tin, indawo yokunyibilika iyanda malunga ne-10 degrees, kwaye amaqondo obushushu anyuka ngee-10 ukuya kwe-20.

I-3. Ixabiso lahlukile: Ixabiso le-tin libiza kakhulu kunokuba likhokele. Xa igosa elibaluleke ngokungalingani lithathelwe indawo yi-tin, iindleko zeThutho ziya kuvuka kabukhali. Ke ngoko, iindleko zenkqubo yokukhokelwa ziphezulu kakhulu kunelo yenkqubo ekhokelayo. Iinkcukacha-manani zibonisa ukuba i-tin bar ithengiselwe i-waption kunye ne-tin fire yokuthengiswa kwezandla, i-Coum-Spart-Free-Rateres iphezulu kunenkqubo ekhokelayo, kwaye i-therder inamathisele amanye amaxesha athengiswayo ngexabiso le-1.5.

4. Inkqubo yahlukile: inkqubo ekhokelayo kunye nenkqubo yasimahla ye-Coum-Shinga inokubonwa kwigama. Kodwa ngqo kwinkqubo, umrhwebi, izinto, kunye nezixhobo ezisetyenzisiweyo, njengezixhobo ezingekho mthethweni, kunye ne-Irons Printaters, kunye ne-Irons ezingekho mthethweni. Esi sisizathu esiphambili sokuba kunzima ukuphatha iinkqubo ezikhokelayo kunye nezingenasimahla kwisityalo esincinci sePCBA.

Olunye umahluko ofana nenkqubo yewindows, ukungafezeki, kunye neemfuno zoKhuselo lweNdalo nazo zahlukile. Inkqubo yefestile yenkqubo ekhokelayo inkulu kwaye i-trgerarararararararararirathy iya kuba ngcono. Nangona kunjalo, ngenxa yokuba inkqubo yasimahla yokukhokela inobuhlobo ngakumbi, kwaye itekhnoloji iqhubeka iphucula, itekhnoloji yasimahla yenkqubo yasimahla ithembekile kwaye ivuthwa.