贴片厂几条线是什么意思啊

贴片厂几条线是什么意思啊

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SMT技术
一、SMT简单介绍
SMT-Surface Mounted Technology，即表面贴装技术，是一种先进的电路组装技术，自上个世纪60年代问世以来，就充分显示出其强大的生命力，它以非凡的速度走完了从诞生、完善直至成熟的路程，迈入了大范围的应用旺盛期。如今无论是投资类电子产品还是民用类电子产品，都有它的身影。
SMT-Surface Mounted Technology came out in the 1960s, which is an advanced technology serviced for circuit manufacturing, and from then it has been stronger which comes through the course of naissance, growth, and maturation as the speed of extraordinary. And now it has coming into the application blooms whether in the areas of investment or civil using.
SMT是一门新兴的、综合性的工程科学技术，涉及到机械、电子、光学、材料、化工、计算机、网络、自动控制等技术。
SMT is a newly & synthetical engineering & science Tech. which deals with mechanism, electron, optics, material, chemistry, computer, net, auto-control Tech. etc.
SMT从狭义上讲，是将表面元器件贴装到PCB上，经过整体加热实现电子元器件的互联；从广义上讲，它包括片式元器件、表面组装工艺和材料。
According to the narrow sense we describe SMT is put the parts onto PCB and then by whole calefaction to reality the electron parts & pads jointing, and according to board sense SMT including slice parts, process and materials.
SMT工艺有以下组成部分，包括：PCB准备检查、检查工艺；焊膏印刷、检查工艺；贴装工艺；贴装后插件、检查；固化工艺；在线检查工艺；修正工艺；在线检测即ICT；质量检查；功能测试；返修工艺；包装工艺；标签工艺等。
SMT process consists of the following parts: Board preparation & checking, Screen Printing, Mount, Hand placement & checking, Reflow, AOI, Modification & Stuffing, ICT, Quality checking & assure, FAT, Rework, Package, Label etc.
SMT 生产线由上料机、锡膏印刷机、接驳台、贴片机、回流焊、AOI设备、ICT 设备、FAT设备、下料机等组成。
SMT production line consists of Loading, Screen printing, Handplace desk, Mounter, Reflow, AOI, ICT, FAT, Unloading equipment etc.
二、SMT特点
1、组装密度高、电子产品体积小、重量轻，贴片元件的体积和重量只有传统插装元件的1/10左右，一般采用SMT后，电子产品的体积缩小40%~60%，重量减轻60%~80%；
High mount consistency, little cubage & weigh of electronic product. The cubage & weigh of component is about 1/10 of the traditional insert-parts. The electronic cubage will reduce about 60%~80% after adopting the SMT.
2、可靠性高、抗震能力强，焊接缺陷率底；
High dependability & quivery resistance capability and low solder defects etc.
3、高频特性好，减少了电磁和射频干扰；
Good quality of high frequency to reduce the interference of electromagnetism & radial.
4、易于实现自动化，生产效率高，降低约为30%~50%的成本。节省材料、能源、设备、人力、时间等。
Easy to realize automatization, high product efficient, reduce about 30%~50% costs and save material, energy, equipment, time etc.
三、采用SMT的缘由：
1、电子产品追求小型化，原先穿孔插件已经无法满足要求；
The traditional insert-parts can’t satisfy with the electronic products minitype trend requires.
2、电子产品功能更加完整，目前采用的集成电路—IC已经没有穿孔插件，特别是大规模、高集成IC不得不采用表面贴装技术；
More functions of the electronic products. The trend is that cosmically & high integration IC adapts to the SMT and there is no insert-parts in IC so far.
3、产品批量化、生产自动化、生产企业为提高自身竞争力、满足客户需求，大力提高产品质量及降低生产成本；
The batch production, produces automatization, reduce costs, and improve the quality are the ways to improve the self-competition power and satisfy the customers’ requires.
4、电子元件的发展、集成电路---IC的开发及半导体材料的多元使用；
Electronic parts developing, IC researching and much use of semiconductor material.
5、电子科技革命实在必行，追逐国际潮流。
Electronic technology revolution is forcefully and goes after the international trends.

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