I.Matanho ekuchinja kushushikana kwepamusoro uye viscosity
Viscosity uye kushushikana kwepamusoro zvinhu zvakakosha zve solder.Yakanakisa solder inofanira kuva yakaderera viscosity uye pamusoro tension kana kunyunguduka.Surface tension ndiyo mamiriro ezvinyorwa, hazvigone kubviswa, asi zvinogona kuchinjwa.
1.Matanho makuru ekuderedza kushushikana kwepamusoro uye viscosity muPCBA soldering ndeyotevera.
Wedzera tembiricha.Kusimudza tembiricha kunogona kuwedzera kureba kwemamorekuru mukati memutengesi yakanyungudutswa uye kuderedza simba rinokweva remamorekuru mukati meiyo solder yemvura iri pamusoro pemamorekuru.Naizvozvo, kusimudza tembiricha kunogona kuderedza viscosity uye kushushikana kwepasi.
2. Kushungurudzika kwepamusoro kweSn kwakakwirira, uye kuwedzerwa kwePb kunogona kuderedza kukanganiswa kwepamusoro.Wedzera zvirimo zve lead muSn-Pb solder.Kana zviri muPb zvinosvika 37%, kushushikana kwepamusoro kunoderera.
3. Kuwedzera anoshanda mumiririri.Izvi zvinogona kunyatso dzikisa tension yepasi ye solder, asiwo kubvisa iyo yepamusoro oxide layer ye solder.
Kushandiswa kwe nitrogen kudzivirira pcba welding kana vacuum welding inogona kuderedza kutonhora kwepamusoro uye kunatsiridza kunyorova.
II.basa rekunetsana kwepamusoro muwelding
Surface tension and wetting force in the opposite direction, so the surface tension ndechimwe chezvinhu zvisingaite weti.
Kanareflowovheni, wave solderingmuchinakana manual soldering, pamusoro tension nokuda paumbwe zvakanaka solder majoini zvinhu zvisina kunaka.Nekudaro, mune iyo SMT yekuisa maitiro reflow soldering pamusoro tension inogona kushandiswa zvakare.
Kana iyo solder paste inosvika pakunyunguduka kwekushisa, pasi pechiito chekuenzanisa kwepamusoro tension, inoburitsa self-positioning effect (Self Alignment), kureva kuti, kana nzvimbo yekuisa chikamu ine kutsauka kuduku, pasi pekuita kwekunetseka kwepamusoro, chikamu chinogona kudzoserwa otomatiki kune chinhambwe chinotarirwa.
Naizvozvo kushushikana kwepamusoro kunoita kuti iyo yekuyerera-yekukwirisa iyo chaiyo inodiwa ive yakasununguka, zviri nyore kuona iyo yakakwira otomatiki uye kumhanya kwakanyanya.
Panguva imwecheteyo zvakare imhaka yekuti "kuyererazve" uye "yega-nzvimbo mhedzisiro" hunhu, iyo SMT inoyerera-inoyerera soldering process chinhu pad dhizaini, chikamu chekumisikidza uye zvichingodaro zvine chikumbiro chakanyanya.
Kana pamusoro makakatanwa haana kuenzana, kunyange kana placement chinzvimbo chakanyatsojeka, pashure nomoto achaonekwawo chikamu chinzvimbo offset, akamira monument, bridging uye zvimwe nomoto kuremara.
Kana wave soldering, nekuda kwehukuru uye kureba kweiyo SMC/SMD chikamu chemuviri pachayo, kana nekuda kwechikamu chepamusoro chinovharira chikamu chipfupi uye kuvharira kunouya tini wave kuyerera, uye mumvuri mhedzisiro inokonzerwa nekushushikana kwepasi kwetini wave. kuyerera, iyo solder yemvura haigone kupinzwa kumashure kwechikamu chemuviri kuita inoyerera inovharira nzvimbo, zvichikonzera kuvuza kwe solder.
Zvimiro zveNeoDen IN6 Reflow Soldering muchina
NeoDen IN6 inopa inoshanda reflow soldering kune vanogadzira PCB.
Iyo tafura-yepamusoro dhizaini yechigadzirwa inoita kuti ive mhinduro yakakwana yemitsara yekugadzira ine zvakasiyana-siyana zvinodiwa.Yakagadzirwa nemukati otomatiki iyo inobatsira vashandisi kupa yakakwenenzverwa soldering.
Iyo modhi nyowani yakapfuura kudiwa kweiyo tubular heater, iyo inopa kunyange kugovera tembirichamuhovhoni yose yekuyerera.Nekutengesa maPCB mune kunyange convection, zvese zvikamu zvinopisa pamwero wakafanana.
Iyo dhizaini inoshandisa aluminium alloy kupisa ndiro iyo inowedzera simba-kushanda kweiyo system.Iyo yemukati yekusefa sisitimu inovandudza mashandiro echigadzirwa uye inoderedza zvinokuvadza kubuda, zvakare.
Mafaira anoshanda anochengeteka mukati meovheni, uye ese maCelsius neFahrenheit mafomati anowanikwa kune vashandisi.Ovheni inoshandisa magetsi 110/220V AC uye ine huremu hwe57kg.
Iyo NeoDen IN6 yakavakwa nealuminium alloy kudziyisa kamuri.
Nguva yekutumira: Sep-16-2022