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Red glue printing process analysis:Standard process editor

Standard process editor


SMT red glue production standard process is: screen printing → (dispensing) → mounting → (curing) → reflow welding → cleaning → detection → repair → completion.

 

1. Screen printing: its function is to print solder paste (solder paste) or red glue (patch glue) on the solder pad of PCB circuit board to prepare for the welding of components. The equipment used is screen printing machine (screen printing machine), located at the forefront of SMT production line.

2, dispensing: it is the red glue point to the fixed position of the PCB, its main role is to fix the components to the PCB board. The dispensing machine is located at the front end of the SMT production line or behind the testing equipment.

3. Mounting: its function is to accurately install surface assembly components on a fixed position of PCB. The equipment used is the SMT machine, located behind the screen printing machine in the SMT production line.

4, curing: its role is to melt the red glue (patch adhesive), so that the surface assembly components and PCB board firmly bonded together. The equipment used is the curing furnace, located behind the SMT machine in the SMT line.

5, reflow welding: its function is to melt solder paste (solder paste), so that the surface assembly components and PCB board firmly bonded together. The reflow furnace is located behind the SMT machine in the SMT line.

6. Cleaning: its function is to remove welding residues such as flux which are harmful to human body on assembled PCB board. The equipment used is the cleaning machine, the position can not be fixed, can be online, also can not be online.

7. Detection: its function is to detect the welding quality and assembly quality of assembled PCB board. The equipment used is magnifying glass, microscope, on-line test instrument (ICT), flying needle test instrument, automatic optical test (AOI), X-ray test system, functional test instrument, etc. Position according to the inspection needs, can be configured in the production line at the appropriate place.

8, repair: its role is to detect the failure of the PCB board for rework. The main tools used are heat gun, soldering iron, repair workstation, etc. It can be installed anywhere in the production line.

In the way of printing is generally now the use of metal scraper, some manual printing opportunities to use glue scraper, automatic or semi-automatic is generally used stainless steel blade scraper. Around the city using metal scraper, scraper head independent control, superior closed-loop feedback.

In fact, the use of manual printing should also use stainless steel blade scraper, rubber scraper is easy to wear, the effect of scraping is not good, and more laborious than stainless steel blade scraper, the only advantage is that the protection of the steel mesh is better, in other words, the steel mesh can be used for a long time.


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I.C.T is a manufacturer of SMT machines. It mainly provides customers with SMT production lines including SMT Stencil Printers,  Pick and place machines, Reflow Oven, AOI Machine, Wave Soldering Machine and PCB Handling Machine etc. I.C.T has more than 25 researches on SMT and DIP technology,  for the world Customers provide SMT total solutions. There are successful cases of SMT technical team in Asia, Europe, America, Africa, and Australia.

I.C.T provide SMT solutions at various stages according to the different needs of customers. I.C.T is not only a provider of SMT equipment and technology, but also is the customer's escort in the field of SMT and DIP.

Welcome more people to discuss with us about SMT technologies and solutions, please contact us for more information:

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