8. adds outfit ion fan:
Temperature of part of warm-up of wave crest furnace is 80~120 ℃ , in such high temperature dry sirocco blows Buddha next extremely easy generation are electrostatic. Ionic fan is by high-pressured general air ionization is become anion, will contain by fan a large number of inside the air inbreathe furnace of anion, what arise in order to counteract because of high temperature sirocco on PCB and component is electrostatic. Entrance of furnace of reason wave crest should add outfit ion fan. Antistatic point of working area entry, conveyer belt start or upper part also can install ionic fan according to needing actually to add.
9. conveyer belt adds outfit is antistatic clean roller:
Contain simple and easy device: ざ shouts magpie of Ji of painful of of pregnant ∮ Gua flinchs dish Wan exemplaries? of Yu of mansion should relatively level off) , wear among bedew hind with iron rod (become a rod) fixed at conveyer belt two end, method of bottle of condole of hospital of the Fang after using water of coke bottle fill is added ceaselessly wet, the roller when conveyer belt actuate is in next self-prossessed following conveyer belt is rotational, remove cleanness, add wet antistatic action. This kind simple and easy and self-restrained the effect that device can play fan of conveyer belt ion in particular situation.
10.PCB is on automation line (solder fills after basically pointing to DIP, test, assemble wait for working procedure) answer namely underlay is antistatic sponge mat, prevent generation electrostatic with board face scratch. Application of the have a change of luck between working procedure is antistatic board card store carry car or card box. (The following) of 106Ω of its surface resistor, receive electrostatic land through 1MΩ resistor appropriate.
Distinguish electrostatic screen material (bag) and antistatic material (bag) very important, antistatic material (bag, mat) it is more pink, use only those who serve as electrostatic and sensitive parts of an apparatus is cheap mat line and intermediary packing, it is oneself only not easy generation is electrostatic just, if electrostatic discharge happens, can cross these antistatic material causes a harm. Electrostatic screen is packed it is argent, black, gray more, have aluminum foil look opaque with material of translucence of black, gray, there still is bar case state now completely transparent material, its fundamental is to be in antistatic outside material again the electrostatic screen layer that an aluminium regards vacuum plating as electric conduction, when electrostatic situation arises, screen layer distributings inductive static electromotive force equably at the whole face that pack, reduce difference of exterior electromotive force, prevent electromotive force of local dot Gao Jing to differ discharge, also have good screen effect to field of high frequency strong electromagnetism at the same time. As defend the electric layer of the material of different and electrostatic screen that pack also assigns grade for: ; of film of insulation of — of layer of plated film of vacuum of; of film of insulation of — of layer of aluminum foil of plating of — of insulation film of; of film of insulation of — of layer of aluminum foil of plating of — of film of insulation of?mdash; of gem of Liao astounded Qian pressworks — of layer of electric bar case absolutely. Outside my material of 2~3 layer static electric screen is except outer packing when noticing to be able to discover IC leaves factory slightly, the inside data that prop up (if push dish and take for expecting) it is black tall block conductor, make an appointment with 106MΩ , also rise only screen and counteract each to bring crural static electromotive force, provide function of electrostatic release access. Electrostatic and sensitive component (when be like IC) and goods shipment, must use electrostatic screen material to pack, and do not have use antistatic bag.
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