110 ruzivo mapoinzi eSMT chip kugadzirisa chikamu 2
56. Mukutanga kwema1970, kwaiva nemhando itsva yeSMD mumhizha, iyo yainzi "chisimbiso chetsoka shoma chip carrier", iyo yaiwanzotsiviwa neHCC;
57. Kupokana kwemodule ine chiratidzo 272 kunofanira kuva 2.7K ohm;
58. Kugona kwe100nF module kwakafanana neiyo ye0.10uf;
Iyo eutectic point ye63Sn + 37Pb ndeye 183 ℃;
60. Inonyanya kushandiswa mbishi zvinhu zveSMT ndeye ceramics;
61. Tembiricha yepamusoro yereflow furnace tembiricha curve i215C;
62. Tembiricha yevira rerata i245c kana ichiongororwa;
63. Kune zvikamu zve SMT, dhayamita ye coiling plate i 13 inches uye 7 inches;
64. Rudzi rwekuvhura kwesimbi yesimbi ine square, triangular, denderedzwa, nyeredzi yakaumbwa uye yakajeka;
65. Parizvino kushandiswa kombiyuta divi PCB, ayo mbishi zvinhu: girazi faibha board;
66. Ndeupi rudzi rwe substrate ceramic plate ndiyo solder paste ye sn62pb36ag2 inoshandiswa;
67. Rosin based flux inogona kugoverwa mumhando ina: R, RA, RSA uye RMA;
68. Kunyangwe kushorwa kwechikamu cheSMT kune kutungamira kana kwete;
69. Ikozvino solder paste pamusika inoda chete 4 maawa ekunamatira nguva mukuita;
70. Kuwedzera kwemhepo kunowanzo shandiswa neSMT midziyo ndeye 5kg / cm2;
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72. Nzira dzekuongorora dzakajairwa dzeSMT: kuongorora kwekuona, kuongororwa kweX-ray uye kuongorora kwemuchina.
73. Nzira yekupisa yekupisa ye ferrochrome kugadzirisa zvikamu ndeye conduction + convection;
74. Maererano nezvino BGA data, sn90 pb10 ndiyo yekutanga tin bhora;
75. Nzira yekugadzira yeplate yesimbi: laser cutting, electroforming uye etching kemikari;
76. Kupisa kwechoto chewelding: shandisa thermometer kuyera kupisa kunoshanda;
77. Apo SMT SMT semi-yapera zvigadzirwa zvinotengeswa kunze, zvikamu zvinogadziriswa paPCB;
78. Nzira yehutano hwemazuva ano tqc-tqa-tqm;
79. ICT bvunzo ndeye tsono bed test;
80. ICT test inogona kushandiswa kuedza zvikamu zvemagetsi, uye static test inosarudzwa;
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82. Chiyero chekuyera chinofanira kuyerwa kubva pakutanga apo maitiro ekugadzirisa zvikamu zvehuto hwemoto anochinjwa;
83. Siemens 80F / S ndeyemagetsi control drive;
84. The solder namira ukobvu geji rinoshandisa Laser chiedza kuyera: solder namira dhigirii, solder namira ukobvu uye solder namira kudhinda upamhi;
85. Zvikamu zveSMT zvinopihwa ne oscillating feeder, disc feeder uye coiling belt feeder;
86. Ndeapi masangano anoshandiswa muSMT midziyo: cam structure, side bar structure, screw structure uye sliding structure;
87. Kana chikamu chekuongorora chisingaoneki chisingagoni kuzivikanwa, BOM, mvumo yekugadzira uye bhodhi yemuenzaniso inofanira kuteverwa;
88. Kana nzira yekurongedzera yezvikamu iri 12w8p, chiyero chepini che counter chinofanira kugadziridzwa kusvika 8mm nguva yega yega;
89. Mhando dzemichina yekugadzira: hot air welding furnace, nitrogen welding furnace, laser welding furnace uye infrared welding furnace;
90. Nzira dziripo dzeSMT zvikamu zvekuedza sampuli: kugadzirisa kugadzirwa, kushandiswa kwemichina yekudhinda uye kudhindwa kwemaoko;
91. Maumbirwo emamark anowanzo shandiswa ndeaya: denderedzwa, muchinjikwa, sikweya, dhaimondi, gonyonhatu, Wanzi;
92. Nemhaka yekuti reflow profile haina kuiswa zvakanaka muchikamu cheSMT, ndiyo preheating zone uye inotonhora nzvimbo inogona kuumba micro crack yezvikamu;
93. Migumo miviri yeSMT zvikamu zvinopisa zvisina kuenzana uye zviri nyore kuumba: kuputika kusina chinhu, kutsauka uye tablet yematombo;
94. SMT zvikamu zvekugadzirisa zvinhu ndezvi: iron soldering, inopisa air extractor, tin gun, tweezers;
95. QC yakakamurwa kuita IQC, IPQC,.FQC uye OQC;
96. High speed Mounter inogona kukwira resistor, capacitor, IC uye transistor;
97. Hunhu hwemagetsi akadzikama: diki ikozvino uye simba guru nekunyorova;
98. Nguva yekutenderera yemuchina wekumhanya-mhanya uye muchina wepasi rose unofanirwa kuve wakaenzana sezvinobvira;
99. Chirevo chechokwadi chehunhu kuita zvakanaka panguva yekutanga;
100. Muchina wekuisa unofanirwa kunamira zvikamu zvidiki kutanga uyezve zvikamu zvakakura;
101. BIOS ndiyo yakakosha yekupinza / yekubuda system;
102. Zvikamu zveSMT zvinogona kupatsanurwa kuita mutobvu uye zvisina lead maererano nekuti kune tsoka;
103. Kune mhando nhatu dzinokosha dzemichina yekuisa inoshingaira: kuenderera mberi kwekuisa, kuenderera mberi kwekuisa uye akawanda ruoko pamusoro pekuisa;
104. SMT inogona kugadzirwa isina loader;
105. Iyo SMT process inosanganisira yekudyisa system, solder paste printer, high speed machine, universal machine, ikozvino welding uye ndiro yekuunganidza muchina;
106. Kana tembiricha uye kunyorova nhengo dzakavhurika, ruvara mudenderedzwa rehumidity card ibhuruu, uye zvikamu zvinogona kushandiswa;
107. Chiyero chechiyero che 20 mm hachisi hupamhi hwetambo;
108. Zvikonzero zvedunhu pfupi nekuda kwekutadza kudhinda mukuita:
a.Kana iyo simbi yemukati ye solder paste isina kunaka, inokonzeresa kudonha
b.Kana kuvhurwa kweplate yesimbi yakakura zvikuru, zvinyorwa zvetini zvakawandisa
c.Kana mhando yeplate yesimbi yakashata uye tini iri murombo, tsiva iyo laser yekucheka template
D. pane yakasara solder paste kudivi reshure re stencil, kuderedza kudzvanya kwe scraper, uye sarudza yakakodzera vaccum uye solvent.
109. Chinangwa chekutanga cheinjiniya chenzvimbo yega yega yechimiro chevira rekuyerera ndeichi:
a.Preheat zone;engineering chinangwa: flux transpiration mune solder paste.
b.Tembiricha yakaenzana nzvimbo;engineering chinangwa: flux activation kubvisa oxides;kubuda kwemvura yakasara.
c.Reflow zone;engineering chinangwa: solder kunyunguduka.
d.Cooling zone;engineering chinangwa: alloy solder joint kuumbwa, chikamu chetsoka uye padhi zvakazara;
110. MuSMT SMT process, izvo zvinonyanya kukonzera solder bead ndezvi: kutadza kuratidzwa kwePCB pad, kutadza kuratidzwa kwesimbi kuvhurwa kweplate, kudzika kwakanyanya kana kudzvanywa kwekuiswa, yakakura kukwira inokwira yeprofile curve, solder paste kudonha uye low paste viscosity. .
Nguva yekutumira: Sep-29-2020