Zvikamu zveModule

Kutarisira zvinhu zvekunamira

1. Ndezvipi zvikamu zvemuchina uye mabhenefiti ekushanda kwemuchina unowanzo shandiswa weSAC305 usina lead?

Muumbirwo: Sn96.5Ag3.0Cu0.5, pokunyunguduka 217℃. Zvakanakira: 30% yakawedzera kusimba kwe oxidation, inoenderana nemirairo yeRoHS yezvakatipoteredza, kuvimbika kwakasimba pakupisa kwakanyanya, uye simba remuchina rinodarika 85% mushure mekukwegura pa150℃ kwemaawa chiuru.
2. Poindi ye eutectic ye solder alloys inokanganisa sei maitiro ekuwelding?

Zvishandiso zveEutectic (zvakaita seSn63Pb37) hazvina nzvimbo yekubatana kwemvura yakasimba kana zvanyunguduka, nehwindo rakamanikana rewelding tembiricha, zvinoda kuti tembiricha yepamusoro ye reflow soldering ive 50-70℃ yakakwira kupfuura nzvimbo yekunyunguduka; zvishandiso zveNon-Eutectic zvine nzvimbo yekubatana kwemvura yakasimba, zvinoda kudzora tembiricha chaiyo kudzivirira kushongedzwa kwakakwana.
3. Nzira yekusiyanisa sei mamiriro ekushandiswa kwe flux nemazinga akasiyana ebasa?

Giredhi reR (mabasa mashoma): Mamiriro ekunze akachena zvakanyanya semuchadenga uye ekurapa, ane resistance insulation residue ≥10¹²Ω;

RA giredhi (basa repakati): Magetsi emagetsi evatengi, anokwanisa kudzora mwero wekukanganisa kwekuwelding ≤0.5%;

Gwaro reSA (basa rakasimba): Nzvimbo dzakaomeswa zvakanyanya, zvinoda kucheneswa kwakasimba kudzivirira ngura.
4. Ndezvipi zvinodiwa zve flux content ye solder wire uye simba rayo pakuwelding?

Zviri mukati menguva dzose: 1.0%-3.0%. Zviri mukati zvakaderera zvinoita kuti ma oxide films asabviswe zvakakwana, zvichiwedzera mwero wekukuvara ne20%-30%; zviri mukati zvakanyanya zvinokonzera marara akawandisa anokanganisa insulation, ne1.8%-2.2% inowanzo shandiswa mukugadzira zvinhu zvemagetsi.
5. Kugoverwa kwehukuru hwesimbi mupaste yesimbi kunokanganisa sei mashandiro ekudhinda?

Type3 (25-45μm): Yakakodzera mapedhi ane nzvimbo inodarika 0.5mm, chiyero chekukanganisa kwekudhinda
Type4 (20-38μm): Yakakodzera nzvimbo diki ye0.3mm, inogona kuvharika nestencil ine parameter dzisina kukodzera (mukana +15%).
6. Ndeipi nzvimbo inobvumirwa yekuchinja-chinja kwekushisa nehunyoro munzvimbo yekuchengetera paste ye solder?

Tembiricha: 0-10℃ (mukati mekuchinja-chinja kwe±2℃), hunyoro: RH≤60%. Mwero wekuchinja kwe viscosity unowedzera ne5%-8% pazuva kana kuchinja-chinja kwetembiricha kuchidarika ±2℃, uye hunyoro hwakawandisa hunokurumidza kuoxidation.
7. Ndeipi nguva yakanyanya kuchengetwa yewaya isina kuvhurwa inosungirwa?

Waya yekusonesa ine mutobvu: makore 3-5 (15-25℃, RH≤60%);

Waya yekusonesa isina mutobvu: makore 2-3. Kuoxidation kunowedzera kupfuura nguva iyoyo, nekuoma kwevhu kunogona kuwedzera kusvika 10%-15%.
8. Sei mvura inoyerera ichifanira kuchengetwa kure nechiedza?

Zvinhu zvinoshanda zvemumvura (zvakaita se organic acids) zvinoora nekukurumidza kana zvikaonekwa nechiedza, basa richidzikira ne40% mushure memwedzi mumwe chete wekuonekwa nechiedza, ukuwo 10%-15% chete inodzikira mumwedzi mitanhatu yekuchengetera pasina chiedza.
9. Sei kusanganisa kuchirambidzwa panguva yekudzoreredza tembiricha ye solder paste inotorwa kubva mufiriji?

Kukurunga kunokonzera tembiricha yemukati isina kuenzana, zvichikonzera kupora kwenzvimbo nguva isati yakwana kana kuti solvent inopera zvisina kujairika. Kutsauka kwe viscosity ≤5% mushure memaawa 4-6 ekudzoreredza tembiricha, nepo 违规搅拌 (kurunga zvisina kufanira) kunogona kukonzera kutsauka kusvika ku20%.
10. Ndeipi nzira yekuenzanisa tembiricha nehunyoro munzvimbo dzinochengeterwa zvinhu zvinosungirirwa?

Gadzirisai mwedzi mitanhatu yega yega kuti muve nechokwadi chekuti tembiricha iri ±1℃ uye hunyoro huri ±3%RH, muchidzivirira mamiriro ekuchengetedza asingadzoreki.
11. Ndeipi nguva yakanyanya kushandiswa kwepaste yakavhurwa yesolder pamuchina wekudhinda?

Kushandisa nguva dzose hakufanirwe kudarika maawa masere patembiricha yemumba iri pakati pe20-25℃ neRH≤60%. Kupenya kunowedzera ne30%-50% kana kwapfuura, uye mwero wekukuvara kwekudhinda unowedzera kusvika pa15%-20%.
12. Ungaziva sei kutenderera kwekutsiva kwemvura inonyungudutswa mutangi rewave soldering?

Sarudza nemutoro wekugadzira uye huwandu hwemarara anosungirirwa, tsiva PCB yega yega ye500-1000㎡ inogadzirwa; tsiva pachine nguva kana huwandu hwemhangura >0.8%, zvikasadaro chiyero chekukanganisa chinowedzera ne25%-35%.
13. Chii chiri hukama huripo pakati pekushandiswa kwewaya yekusonesa nehukuru hwejoini yekusonesa mukunamira kwekusarudza?

Kushandiswa kunowedzera ne15%-20% pakuwedzera kwega kwega kwe 0.1mm kwedhayamita yejoini resolder. Kushandiswa kunogona kuverengerwa (kufanotaurwa) nekuverenga vhoriyamu yejoini resolder (SAC305 density 7.4g/cm³).
14. Ndeipi musanganiswa wakanakisisa wekupisa kwesimbi inonamirwa uye nguva yekunamirwa pakunamirwa nemaoko?

Tembiricha: 350-380℃, nguva: 2-3 masekondi. Kupfuura 400℃ kana >5 masekondi zvinokuvadza zviri nyore zvikamu,
15. Kona ye squeegee inokanganisa sei kunaka kwekudhinda panguva yekudhinda ne solder paste?

Angle 45°-60° ndiyo yakanaka. 60° inowanzo pfapfaidzwa uye kutsvedza, uye mwero wekukanganisa unowedzera ne8%-10% pa5° yega yega.
16. Nzira yekuona sei maburi emukati mezvisungo zve solder ne X-Ray?

X-Ray inogona kuona maburi ane dhayamita ≥0.1mm. IPC-A-610 standard: nzvimbo isina chinhu ≤25% yezvigadzirwa zvekirasi B, ≤15% yekirasi C, ine maburi akawandisa anokanganisa kupisa uye simba.
17. Ndezvipi zvinodiwa uye mazinga ekutsauka anotenderwa ekuyedza viscosity ye solder paste?

Mamiriro: 25±0.5℃, kumhanya kwekutenderera 5rpm, kuyedza kwemasekonzi 60. SAC305 viscosity yakajairika: 80-120Pa·s, kugadziriswa kunodiwa kana kutsauka kuchipfuura ±15%.
18. Ndedzipi nzira dzekuyedza simba rekusimba uye zvinodiwa zvemajoini e solder?

Edza nechinhu chinoedza kudhonza tambo (tensile tester) pakumhanya kwe5mm/min. ≥0.5N ye0603 package, ≥1.5N yeQFP leads, simba rayo harina kukwana kana ikazununguka.
19. Nzira yekuongorora chimiro che microstructure che solder joints ne metallographic sectioning?

Tarisa uchishandisa maikorosikopu mushure mekukuya nekupukuta, uchitarisa ukobvu hweIMC layer (1-3μm yeSAC305), >5μm inoita kuti majoini e solder apwanyike uye anopfupisa hupenyu hwemuviri neanopfuura 50%.
20. Ndeipi chiyero chekuongorora kuchena kwemaion emvura inoyerera?

Kuedzwa ne ion chromatography, ion residue pa unit area ≤1.5μg/cm² (muNaCl yakaenzana), kuwanda kwe electrochemical migration kunogona kukonzera short circuits.
21. Kupisa kwakanyanya panguva yekudziyisa kwemvura panguva yekusvira zvakare kunokanganisa sei kusvira?

Mwero we1-3℃/s wakakodzera. >5℃/s inokonzerwa nekupisa kwakanyanya,
22. Mukuita kwekusonesa mafungu maviri, ndeapi mabasa uye marongero eparameter emawaya epamberi neekumashure?

Mafungu epamberi (mafungu anotenderera): Kureba kwemafungu 30-50mm, kumhanya 2-3m/min, anoburitsa flux nemhepo;

Wave yekumashure (wave yakatsetseka): Kureba kwemafungu 20-30mm, kumhanya 1.5-2.5m/min, inoumba majoini e solder.
23. Ungaderedza sei kudonha kwepaste yesolder nekushandisa dhizaini yekuvhura stencil?

Shandisa maburi ane masitepisi uye makona akatenderera akachekwa nelaser. Deredza kuvhura kweQFP kwe 0.3mm pitch ne 10%-15% uye wedzera makona akatenderera e 0.05mm, zvichideredza mwero wekudonha kubva pa 12% kusvika pa 3%-5%.
24. Dziviriro yenitrogen inokonzeresa sei kunaka kwekusondera mukusondera kwekusarudza?

Nzvimbo ine nitrogen (oxygen content
25. Maitiro ekugadzirisa mwero wekutonhorera kwe reflow soldering zvichienderana nehukobvu hwePCB?

Pakuwedzera kwega kwega kwe0.5mm kwehukobvu hwePCB, deredza mwero wekutonhodza ne1-2℃/s. Kutonhodza nekukurumidza (>5℃/s) kune mabhodhi makobvu anowanzotsemuka, kunonoka kunokanganisa kushanda zvakanaka uye kunokonzera oxidation.
26. Ndeipi pfungwa yekufananidza pakati pekumhanya kwekudhinda press demolding speed uye solder paste viscosity?

Kana viscosity yakakwira, kumhanya kwekubvisa kunonoka. Viscosity yakakwira (>150Pa·s): 1-2mm/s, viscosity yakaderera (
27. Ndeipi hukama huripo pakati pehuwandu hwenzvimbo dzekupisa dzinoshandiswa pakutsvaira mvura (reflow soldering temperature zones) uye welding yebhodhi redunhu yakaoma?

Midziyo ine nzvimbo dzekupisa dzinosvika masere kana kupfuura yakakodzera mabhodhi edunhu ane huwandu hwakawanda, zvichiwedzera mwero wezvitupa kubva pa85% kusvika pamusoro pe95% zvichienzaniswa nemidziyo ine nzvimbo nhanhatu, ine kudzora kupisa kwakanyatsojeka.
28. Chii chinoita kuti mudziyo wekusanganisa mvura mutangi rekusoldering remafungu ushande zvakanaka pakuenzana kwemvura inosolder?

Kumhanya kwekutenderera kwe20-40rpm kunoita kuti mvura inosanganiswa ive yakafanana. Mushure mekumira kusanganisa, musiyano wekupisa pakati pezvikamu zvepamusoro nepazasi unowedzera ne3-5℃ paawa, zvichikonzera kutsauka kwakawedzerwa uye chiyero chekukanganisa chinowedzera ne10%-15%.
29. Chii chinoita kuti kunyatsojeka kwehuwandu hwesimbi inopfapfaidzwa nesimbi inonamira pamisungo midiki inonamira?

Kururama kunofanira kudzorwa mukati me ±0.01mg. Pamapakeji e0201, kutsauka >±0.02mg kunowedzera mukana wekuti soldering ive pfupi/isina kukwana ne40%-50%, zvichikanganisa goho zvakanyanya.
30. Ndeipi nzvimbo yekudzora kusimba kwehurongwa hwekudyisa waya yekusolder?

Kushushikana kwe0.8-1
31. Ndeipi nzira yakajairika uye matanho ekudzivirira pakudzokorodza solder isina mutobvu?

Maitiro: Kuunganidzwa kwakarongeka → kubviswa kwekunyungudutsa uye kusachena → kugadziriswa kwechimiro. Kupisa kwekunyungudutsa 280-320℃, huwandu hwesimbi ≥99.5% mushure mekubvisa kusachena. Dzivisa kusvibiswa kwesimbi inorema; mvura yakasviba inofanira kuderedzwa uye kupwanywa kuti isvike padanho reGB 8978-1996 rekubuda.
32. Ndezvipi zvikamu zvikuru zvemagasi anoshanduka-shanduka uye miganhu yekusvibiswa kwawo nebasa?

Ine abietic acid neisopropanol. Miganhu yekusvibiswa pabasa: abietic acid 5mg/m³ (avhareji yakatarwa nenguva), isopropanol 980mg/m³. Shandisa mhepo inoshanda zvakanyanya kudzivirira kutsamwa kwekufema uye kwetsinga.
33. Ndeipi kodhi yekupatsanura marara ane njodzi uye zvinodiwa pakurasa marara nezvinhu zvinosungirirwa marara?

Yakarongwa seHW49 (kodhi 900-041-49), inofanira kuraswa nemayuniti akakodzera, kutevedzera Hazardous Waste Transfer Document Management Measures, uye kurambidza zvachose kusanganiswa nemarara emumba.
34. Ndezvipi zvinodiwa kuti nzvimbo dzekuchengetera zvinhu zvisaputika dzisashandise kuputika?

Chiyero cheEx dⅡBT4 chisingaputike chinodiwa kuti uchengetedze kuyerera kunobvira moto. Shandisa mwenje/maswichi asingaputike uye rambidza michina inogadzira spark. Kusatevedzera mitemo kunowedzera njodzi yemoto/kuputika ne30%-50%.
35. Nzira yekudzivirira sei oxidation yetsvina ye solder panguva yekuchengetera?

Chengeta mumidziyo yakaoma yakavharwa ine 0.5%-1.0%BHT antioxidant. Kuoxidation inowedzera ne50% mumaawa makumi maviri nemana kana yaiswa pachena; kuchengetwa kwakavharwa kunowedzera nguva yekudzokorodza kusvika kumwedzi mitatu kusvika mitanhatu.
36. Ungaderedza sei mari nekushandisa nzira yekugadzirisa ukobvu hwekudhinda kwe solder paste?

Deredza ukobvu kubva pa0.15mm kusvika pa0.12mm zvichienderana nekutevedzera mhando, uchideredza kushandiswa ne20%-25%. Kugadziriswa kweDOE kunoderedza mutengo paPCB ne0.3-0.5 RMB.
37. Ndeipi avhareji yekurasikirwa kwewaya yekusolder uye matanho ekuderedza indasitiri?

Avhareji yeindasitiri: 8%-12%. Matanho: Kuisa waya otomatiki (kunoderedza kurasikirwa ne3-5%), maitiro akagadziriswa (kunoderedza kusungirirwa kusina chinhu ne15%-20%), kudzokorodza marara ewaya (70%-80% recovery rate), kunogona kuderera kusvika 5%-8%.
38. Ndeipi nzira yekuongorora mashandiro emari yezvinogadzirwa nemasolder paste kubva kumhando dzakasiyana?

Zviratidzo: Mutengo weyuniti, huwandu hwesimbi (+5% mutengo pa +1%), mwero wekukuvara kwekudhinda (-0.5 RMB/PCB pa -1%), nguva yekushanda (-3% mutengo wekuchengetedza pa +1 mwedzi), zvakaverengerwa nechiyero chakayerwa.
39. Ungaderedza sei marara ekugadzirisa mafungu kuburikidza nekugadzirisa mashandiro?

Matanho: Kudzivirira nitrogen (kunoderedza marara ne40%-60%), oiri inodzivirira oxidation (kunoderedza mwero we oxidation ne50%-70%), kudzora tembiricha ±2℃, kunogona kuderedza marara kubva pa5kg/kits kusvika pa2-3kg/kits.
40. Ndehupi hukama huripo pakati pekuchinjana kwezvinhu muzvinhu zvinotengeswa nemidziyo yemagetsi?

Kuwedzera kwemari inoshandiswa kubva pa4 kusvika ka6 pagore kunoderedza mari yekushandisa mumabasa ne33%. Kuvandudza mashandiro kuburikidza nekutenga zvinhu zveJIT, kugadziridza zvinhu (20%-30%), uye kupfupisa nguva (kuderedzwa kwemazuva 15-20).
41. Ndeapi maitiro akakosha anofanira kutariswa panguva yekuongorora ISO 9001 certification yevatengesi vesolder?

Chinangwa: Kuongorora zvinhu zvisina kugadzirwa (100% kufukidzwa), kudzora kugadzirwa (semuenzaniso, kupatsanurwa kwenguva yekusanganisa paste yesolder ≤5%), kuyedzwa kwechigadzirwa kwapera (≥10 zvinhu pabatch imwe neimwe), kubata kwechigadzirwa kusingaenderane nenguva (nguva ≥95%).
42. Ungaongorora sei kugona kwemutengesi pakuongorora nekugadzira zvinhu kuburikidza nekuongorora zvinhu panzvimbo yacho?

Zviratidzo zvekuongorora: Midziyo yeR&D (DSC, kuwanikwa kweSEM), chiyero chevashandi veR&D (≥15%), huwandu hwemapatent (≥3 itsva pagore), kutenderera kwekugadzirwa kwechigadzirwa chitsva (avhareji ≤mwedzi mitanhatu).
43. Nzira yekuziva sei huwandu hwedhipoziti yemhando yepamusoro yevatengesi vezvokusonera?

Chiyero: 5%-10% yemari yekutenga pagore. Bvisa chiyero chezvikanganiso zvebatch >3%, dzosera mushure memabatch matatu akateedzana e 合格 kuti uvandudze kudzora mhando.
44. Ndezvipi zvinhu zvakakosha zvehunyanzvi zvinofanira kuverengerwa muchibvumirano chehunyanzvi nevatengesi vezvokusonera?

Zvinosanganisira: Kuumbwa kweAlloy (semuenzaniso, SAC305 tolerance Sn±0.5%, Ag±0.2%, Cu±0.1%), melting point (217℃±3℃), viscosity (50-150Pa·s±10%), activity level (semuenzaniso, RA grade halide ≤0.5%), zvinodiwa nezvakatipoteredza (RoHS 2.0), nezvimwewo.
45. Maitiro ekugadzirisa ruzivo rwebatch yesolder kuburikidza nehurongwa hwekutevera mhando?

Zvinyorwa zvesystem: Nhamba yebatch, zuva rekugadzirwa, kuumbwa, nguva yekuchengetera zvinhu, nezvimwewo, zvakabatana nePCBA unique identifiers. Nguva yenzvimbo yedambudziko yaderedzwa kubva pamaawa makumi maviri nemana kusvika paawa makumi maviri nemaviri.
46. Mhando dzakasiyana dzema "solder paste squeegees" dzinokanganisa sei kunaka kwekudhinda?

Polyurethane squeegee: Inochinjika, yakakodzera kusviba kwakaderera uye kukwirira kwakaderera (mapini
Simbi inokwesha: Kuomarara kwakanyanya, kwakakodzera mafirimu ane viscosity yakakura uye makobvu (mapedhi >0.8mm, kushivirira ukobvu ±5μm).
47. Nzira yekuongorora kushanda kwemaitiro ekugadzirisa solder nehuwandu?

Zviratidzo: Kuchinja kwezvinhu zviri muchitoro (danho rakanaka kwazvo ka8-10 pagore), nguva kubva pakutorwa kuenda kumutsetse (≤ awa imwe chete), chiyero chenguva yekusashanda nekuda kwematambudziko ekutarisira (
48. Maitiro ekugadzirisa zvikonzero kubva pamaonero ezvinhu zvinosungirirwa kana 大面积虚焊 (kusungirirwa kwakawanda kusina kukwana) kwaitika mushure mekusungirirwa kwePCBA?

Pfungwa dzekugadzirisa matambudziko:

1. Tarisa kana simbi ine simbi inonamira ≥90% (isina mutobvu), kushomeka kunowedzera njodzi yekunamira ne40%+.

2. Tarisa kuti flux inosangana neRA grade, kusakwana kwekushanda kunokonzera kusanyorova zvakanaka;

3. Simbisa kana paste yekusonesa yapera (kusviba/kuora kwebasa).
49. Ungasarudza sei zvinhu zvakakodzera zvekusvira kuti zviongororwe panguva yekugadzirwa kwePCBA small-batch trial?

Maitiro:

1. Isa pamberi muenzaniso we solder sekugadzirwa kwehuwandu kuti uve nechokwadi chekuti maitiro acho anoramba achienderera mberi;

2. Kune zvigadzirwa zvakaoma, sarudza mhando mbiri kusvika nhatu dzine mashandiro akafanana kuti uenzanise;

3. Ongorora uchishandisa chiyero chekukanganisa, data rekusimba kwesimba rekusunga, uye mutengo wakakwana.
50. Ungaongorora sei kukanganiswa kwenzvimbo yekuchengetera solder pahupenyu hwayo hwesherufu?

Zvinhu zvikuru:

- Nguva yekushanda pasherufu inopfupika ne20% pa5℃ yega yega kupfuura mwero wepamusoro (semuenzaniso, paste >10℃);

- Kuwanda kwe oxidation kunowedzera ne15% pakuwedzera kwehunyoro hwe10%RH;

Ongorora hukama hwedata uchishandisa tembiricha/hunyoro kuti ufanotaura nguva chaiyo yekushanda kwechinhu.
51. Ungaziva sei kana uchida kutsiva bhavhu rekusolder panguva yekugadzirisa tangi rekusoldering remafungu nguva dzose?

Zvinodiwa pakutsiva:

1. Kusachena kunodarika mwero (semuenzaniso, Cu >0.8%, IPC-J-STD-006B), simba remajoini e solder rinoderera ne20%-30%;

2. Marara anofukidza kupfuura 20% yenzvimbo yekugezera, zvichikanganisa kunaka kwenzvimbo yekugezera;

3. Kurema kwekunamira kwesimbi kunoramba kuchikwira nekuda kwematambudziko ekugezera nesimbi.
52. Maitiro ekugadzirisa zvirongwa zvekutenga uchishandisa big data analysis mukutarisira zvinhu zve solder?

Maitiro:

1. Ongorora kushandiswa kwekare, kutenderera kwekutenga, uye kushanduka kwemitengo kuti ufanotaura kudiwa;

2. Kuisa zvinhu muzvitoro nguva isati yakwana zvichibva pamitengo yemwaka kuti kuderedze njodzi dzekushaya kwezviwanikwa;

3. Tevedzera mafambiro emitengo kuti ugone kushandisa nguva yekutenga. Ruzivo runoratidza mutengo wezvinhu zviri mudura ne15%-20% uye mutengo wekutenga ne8%-12%.
53. Chii chinokanganisa kushandiswa kwemhando dzakasiyana dzekugadzirisazve solder pakuvimbika kwechigadzirwa panguva yekugadzirisazve PCBA?

Mhedzisiro:

- Solder ine chimiro chimwe chete: Kushanda kwemajoini kwakafanana, kuvimbika kwakafanana nekwepakutanga;

- Solder ine maumbirwo akasiyana (semuenzaniso, solder ine low-temperature low-based bismuth): Kusawirirana kukuru kweCTE (bismuth-based ≈2x SAC305), inowanzotsemuka mukupisa, kuvimbika kwakaderedzwa ne50%+.

Kutarisira zvinhu zvekunamira

1. Ndezvipi zvikamu zvemuchina uye mabhenefiti ekushanda kwemuchina unowanzo shandiswa weSAC305 usina lead?

2. Poindi ye eutectic ye solder alloys inokanganisa sei maitiro ekuwelding?

3. Nzira yekusiyanisa sei mamiriro ekushandiswa kwe flux nemazinga akasiyana ebasa?

4. Ndezvipi zvinodiwa zve flux content ye solder wire uye simba rayo pakuwelding?

5. Kugoverwa kwehukuru hwesimbi mupaste yesimbi kunokanganisa sei mashandiro ekudhinda?

6. Ndeipi nzvimbo inobvumirwa yekuchinja-chinja kwekushisa nehunyoro munzvimbo yekuchengetera paste ye solder?

7. Ndeipi nguva yakanyanya kuchengetwa yewaya isina kuvhurwa inosungirwa?

8. Sei mvura inoyerera ichifanira kuchengetwa kure nechiedza?

9. Sei kusanganisa kuchirambidzwa panguva yekudzoreredza tembiricha ye solder paste inotorwa kubva mufiriji?

10. Ndeipi nzira yekuenzanisa tembiricha nehunyoro munzvimbo dzinochengeterwa zvinhu zvinosungirirwa?

11. Ndeipi nguva yakanyanya kushandiswa kwepaste yakavhurwa yesolder pamuchina wekudhinda?

12. Ungaziva sei kutenderera kwekutsiva kwemvura inonyungudutswa mutangi rewave soldering?

13. Chii chiri hukama huripo pakati pekushandiswa kwewaya yekusonesa nehukuru hwejoini yekusonesa mukunamira kwekusarudza?

14. Ndeipi musanganiswa wakanakisisa wekupisa kwesimbi inonamirwa uye nguva yekunamirwa pakunamirwa nemaoko?

15. Kona ye squeegee inokanganisa sei kunaka kwekudhinda panguva yekudhinda ne solder paste?

16. Nzira yekuona sei maburi emukati mezvisungo zve solder ne X-Ray?

17. Ndezvipi zvinodiwa uye mazinga ekutsauka anotenderwa ekuyedza viscosity ye solder paste?

18. Ndedzipi nzira dzekuyedza simba rekusimba uye zvinodiwa zvemajoini e solder?

19. Nzira yekuongorora chimiro che microstructure che solder joints ne metallographic sectioning?

20. Ndeipi chiyero chekuongorora kuchena kwemaion emvura inoyerera?

21. Kupisa kwakanyanya panguva yekudziyisa kwemvura panguva yekusvira zvakare kunokanganisa sei kusvira?

22. Mukuita kwekusonesa mafungu maviri, ndeapi mabasa uye marongero eparameter emawaya epamberi neekumashure?

23. Ungaderedza sei kudonha kwepaste yesolder nekushandisa dhizaini yekuvhura stencil?

24. Dziviriro yenitrogen inokonzeresa sei kunaka kwekusondera mukusondera kwekusarudza?

25. Maitiro ekugadzirisa mwero wekutonhorera kwe reflow soldering zvichienderana nehukobvu hwePCB?

26. Ndeipi pfungwa yekufananidza pakati pekumhanya kwekudhinda press demolding speed uye solder paste viscosity?

27. Ndeipi hukama huripo pakati pehuwandu hwenzvimbo dzekupisa dzinoshandiswa pakutsvaira mvura (reflow soldering temperature zones) uye welding yebhodhi redunhu yakaoma?

28. Chii chinoita kuti mudziyo wekusanganisa mvura mutangi rekusoldering remafungu ushande zvakanaka pakuenzana kwemvura inosolder?

29. Chii chinoita kuti kunyatsojeka kwehuwandu hwesimbi inopfapfaidzwa nesimbi inonamira pamisungo midiki inonamira?

30. Ndeipi nzvimbo yekudzora kusimba kwehurongwa hwekudyisa waya yekusolder?

31. Ndeipi nzira yakajairika uye matanho ekudzivirira pakudzokorodza solder isina mutobvu?

32. Ndezvipi zvikamu zvikuru zvemagasi anoshanduka-shanduka uye miganhu yekusvibiswa kwawo nebasa?

33. Ndeipi kodhi yekupatsanura marara ane njodzi uye zvinodiwa pakurasa marara nezvinhu zvinosungirirwa marara?

34. Ndezvipi zvinodiwa kuti nzvimbo dzekuchengetera zvinhu zvisaputika dzisashandise kuputika?

35. Nzira yekudzivirira sei oxidation yetsvina ye solder panguva yekuchengetera?

36. Ungaderedza sei mari nekushandisa nzira yekugadzirisa ukobvu hwekudhinda kwe solder paste?

37. Ndeipi avhareji yekurasikirwa kwewaya yekusolder uye matanho ekuderedza indasitiri?

38. Ndeipi nzira yekuongorora mashandiro emari yezvinogadzirwa nemasolder paste kubva kumhando dzakasiyana?

39. Ungaderedza sei marara ekugadzirisa mafungu kuburikidza nekugadzirisa mashandiro?

40. Ndehupi hukama huripo pakati pekuchinjana kwezvinhu muzvinhu zvinotengeswa nemidziyo yemagetsi?

41. Ndeapi maitiro akakosha anofanira kutariswa panguva yekuongorora ISO 9001 certification yevatengesi vesolder?

42. Ungaongorora sei kugona kwemutengesi pakuongorora nekugadzira zvinhu kuburikidza nekuongorora zvinhu panzvimbo yacho?

43. Nzira yekuziva sei huwandu hwedhipoziti yemhando yepamusoro yevatengesi vezvokusonera?

44. Ndezvipi zvinhu zvakakosha zvehunyanzvi zvinofanira kuverengerwa muchibvumirano chehunyanzvi nevatengesi vezvokusonera?

45. Maitiro ekugadzirisa ruzivo rwebatch yesolder kuburikidza nehurongwa hwekutevera mhando?

46. ​​Mhando dzakasiyana dzema "solder paste squeegees" dzinokanganisa sei kunaka kwekudhinda?

47. Nzira yekuongorora kushanda kwemaitiro ekugadzirisa solder nehuwandu?

48. Maitiro ekugadzirisa zvikonzero kubva pamaonero ezvinhu zvinosungirirwa kana 大面积虚焊 (kusungirirwa kwakawanda kusina kukwana) kwaitika mushure mekusungirirwa kwePCBA?

49. Ungasarudza sei zvinhu zvakakodzera zvekusvira kuti zviongororwe panguva yekugadzirwa kwePCBA small-batch trial?

50. Ungaongorora sei kukanganiswa kwenzvimbo yekuchengetera solder pahupenyu hwayo hwesherufu?

51. Ungaziva sei kana uchida kutsiva bhavhu rekusolder panguva yekugadzirisa tangi rekusoldering remafungu nguva dzose?

52. Maitiro ekugadzirisa zvirongwa zvekutenga uchishandisa big data analysis mukutarisira zvinhu zve solder?

53. Chii chinokanganisa kushandiswa kwemhando dzakasiyana dzekugadzirisazve solder pakuvimbika kwechigadzirwa panguva yekugadzirisazve PCBA?

46. Mhando dzakasiyana dzema "solder paste squeegees" dzinokanganisa sei kunaka kwekudhinda?