SMT是由混合集成電路技術(shù)發(fā)展而來(lái)的新一代電子裝聯(lián)技術(shù)，以采用元器件表面貼裝技術(shù)和回流焊接技術(shù)為特點(diǎn)，成為電子產(chǎn)品制造中新一代的組裝技術(shù)。SMT 的廣泛應(yīng)用，促進(jìn)了電子產(chǎn)品的小型化、多功能化，為大批量生產(chǎn)、低缺陷率生產(chǎn)提供了條件。

SMT is a new generation of electronic assembly technology developed by hybrid integrated circuit technology, characterized by the use of component surface mounting technology and reflow welding technology, and become a new generation of assembly technology in electronic product seistic manufacturing. The wide application of SMT promotes the miniaturization and versatility of electronic products, which provides conditions for mass production and low defect rate production.

SMT就是使用一定的工具將無(wú)引腳的表面貼裝元器件準(zhǔn)確地放置到經(jīng)過(guò)印刷焊膏或經(jīng)過(guò)點(diǎn)膠的PCB焊盤(pán)上，然后經(jīng)過(guò)波峰焊或回流焊，使元器件與電路板建立良好的機(jī)械和電氣連接，SMT工藝構(gòu)成包括一下幾個(gè)方面。

SMT is the use of a certain tool to pinless surface mount components accurately placed on the printed solder paste or through the dispensing PCB pad, and then through the wave welding or back-flow welding, so that the components and the board to establish a good mechanical and electrical connection, SMT process composition includes several aspects.

絲印和點(diǎn)膠，絲印的作用是將焊膏或貼片膠漏印到PCB的焊盤(pán)上，為元器件的焊接做準(zhǔn)備。所用設(shè)備為絲印機(jī)也叫絲網(wǎng)印刷機(jī)，位于SMT生產(chǎn)線的最前端。點(diǎn)膠,它是將膠水滴到PCB的固定位置上，其主要作用是將元器件固定到 PCB板上。所用設(shè)備為點(diǎn)膠機(jī)，位于SMT生產(chǎn)線的最前端或檢測(cè)設(shè)備的后面。

Silk screen and dispensing, the role of silk screen is to solder paste or patch glue leakage to the PCB pad, in preparation for the welding of components. The equipment used is a screen press, also known as a screen press, located at the front of the SMT production line. Dispensing, it is the glue drop to the fixed position of the PCB, its main function is to fix the components to the PCB board. The equipment used is a dispensing machine, located at the front end of the SMT production line or behind the inspection equipment.

貼裝和固話,貼裝的作用是將表面組裝元器件準(zhǔn)確安裝到PCB的固定位置上，所用設(shè)備為貼片機(jī)，位于SMT生產(chǎn)線中絲印機(jī)的后面，固化,其作用是將貼片膠融化，從而使表面組裝元器件與PCB板牢固粘接在一起。所用設(shè)備為固化爐，位于SMT中貼片機(jī)的后面。

Placement and fixed-line, the role of the placement is to the surface assembly components accurately installed in the fixed position of the PCB, the equipment used for the patch machine, located in the SMT production line behind the wire printing machine, curing, its role is to melt the patch glue, so that the surface assembly components and PCB board firmly bonded together. The equipment used is a curing furnace, located behind the patcher in the SMT.

回流焊接和清洗,回流焊的作用是將焊膏融化，使表面組裝元器件與PCB板牢固粘接在一起。所用設(shè)備為回流焊爐，位于SMT中貼片機(jī)的后面。清洗,其作用是將組裝好的PCB板上面的對(duì)人體有害的焊接殘留物如助焊劑等除去。所用設(shè)備為清洗機(jī)，位置可以不固定，可以在線，也可不在線。

Reflow welding and cleaning, the role of reflow welding is to melt the solder paste, so that the surface assembly components and PCB board firmly bonded together. The equipment used is a reflux welding furnace located behind the patcher in the SMT. Cleaning, the role of which is to remove the harmful welding residues such as flux esclose on the assembled PCB board. The equipment used is a cleaner, the location can not be fixed, can be online, or not online.

最后就是檢測(cè),其作用是對(duì)組裝好的PCB板進(jìn)行焊接質(zhì)量和裝配質(zhì)量的檢測(cè)。所用設(shè)備有放大鏡、顯微鏡、在線測(cè)試儀、飛針測(cè)試儀、AOI自動(dòng)光學(xué)檢測(cè)設(shè)備、X-RAY檢測(cè)系統(tǒng)、功能測(cè)試儀等。位置根據(jù)檢測(cè)的需要，可以配置在生產(chǎn)線合適的地方。

Finally, the test, its role is to assemble the PCB board welding quality and assembly quality testing. The equipment used is a magnifying glass, microscope, online tester, fly pin tester, AOI automatic optical detection equipment, X-RAY detection system, functional tester and so on. Location sits in the right place on the production line according to the needs of the test.

深圳市創(chuàng)盈時(shí)代科技有限公司是一家專注于平臺(tái)點(diǎn)膠機(jī)，落地式點(diǎn)膠機(jī)，視覺(jué)點(diǎn)膠機(jī)，手機(jī)點(diǎn)膠機(jī)，非標(biāo)自動(dòng)化設(shè)備的研發(fā)生產(chǎn)和銷售于一體的國(guó)家高新技術(shù)點(diǎn)膠機(jī)廠家。

本文關(guān)鍵字：SMT工藝流程