China New Technology in PCB Manufacturing AUS in 20222022-02-25
New technology in PCB manufacturing AUS are often not in sight, but they are part of everything that involves technology. Computers, automated chairs (like those of dentists), security systems, smartphones, toys, cars and showers. These are just a few examples of devices that take advantage of these boards full of electronic components to perform their respective functions.
Despite being mostly hidden, you must notice that PCIs are extremely important in our daily lives. MIRACLEPWB explains to its readers how these boards produce. Put on your goggles and anti-static wrist strap and let’s start the tour of a production line.
What is new technology in PCB manufacturing AUS?
A printed circuit consists of a board formed by layers of plastic and fibrous materials that has thin films of metallic substances. These films form the “tracks” or “lanes” that will be responsible for conducting the electric current through the electronic components.
These electrical impulses are transmitted to the components. And enables the operation of each part and, consequently, of the complete system formed by the PCI. Printed circuit boards originated in 1936 by the Austrian engineer Paul Eisler. Although the fundamental technique for the development of PCBs emerged in 1903 with the research of the German inventor Albert Hanson.
Production process with new technology in PCB manufacturing AUS
Before exploring the PCB manufacturing process, it is important to clarify that the steps described in this article may vary between manufacturers. Each company has its procedures stipulated according to its structure and working method. Our intention is to show how printed circuit boards are produced in a generic way.
For the preparation of this article, we based on the visit made by the directors of the company Base2 to one of their suppliers of printed circuit boards.
Creation of electrical schematic and drawing
The process of manufacturing with new technology in PCB manufacturing AUS starts in a computer. Each PCI model is designed by engineers with knowledge in electrical or electronics, using specific software.
The files originated, usually in CAD and CAM formats, form the electrical schematic of the board, defining where the electrical current must pass. These drawings will be common by the production machines to select the layers, drill holes and create the PCI “tracks” steps. We will see in more detail later in this article.
The first procedure of the actual fabrication is drilling
In new technology in PCB manufacturing AUS grouped in large panels, several fibrous plates (which will form the layers of the PCI) perforate by large machines. Some of which are capable of surpassing up to six panels at the same time.
A thin sheet of aluminum foil is easy to place over the panels to absorb and help distribute the heat comes by the perforation. This prevents possible damage to the board. The number of bits common by the machines can vary. But in general, they have cartridges with 120 bits.
Plates receiving Chemical and copper bath
After removing the aluminum foil, the panels clean. At this stage of the new technology in PCB manufacturing AUS process, the plates remove from contact with electrical currents. The substances common come according to the material of the metal plates and foils.
Then, the still grouped PCBs go to copper-filled containers. Thus, the entire area of the plates, including inside the holes opened in the perforation. It will receive a very thin layer of this metal.
Application of photoresist film: protection from UV rays
The next step is the application of a photoresist film. A light-sensitive material that aims to create a coating to protect the copper layer of PCBs from UV rays. Hence, it prevents possible oxidation and short circuits.
This is a step that requires great care with new technology in PCB manufacturing AUS. The storage environments for panels with exposed photoresist film must much sanitize. Hence, foreign particles (such as dust) do not come into contact with the conduction areas of the plates.
PCB manufacturing new layer works as a mask
Subsequently, the panels receive a film that will determine the tracing of the “tracks” that will conduct the electrical current through the PCB. It covers the parts of the surface of the boards that should not receive current. It leaves only the positions of the components and the path that the current should follow between them (the “trails”) exposed.
A reinforcement in the copper layer
The new technology in PCB manufacturing AUS go on to receive a reinforcement in the copper layer in the parts that remained exposed, the “tracks” and the holes resulting from the perforation. The applications of the metallic substance are very thin, being thousandths of a centimeter thick.
Another metallic element comes into play: tin. This substance adds to the spots where areas freshly bathed in copper remain exposed. It will serve as a protection for the contacts where the electronic components will solder in the future.
The PCBS start the photoresist film removal procedure
The films remove with machines, as the precision must be perfect with new technology in PCB manufacturing AUS so as not to affect other layers of the boards. Afterwards, the panels dip in tanks with chemical components to remove the tin. At that moment, the structure that will be responsible for conducting the electric current finish.
The manufacturing process begins its final phase
The printed circuit boards go to a device that can be understood as a giant printer, on which they will have the silkscreen printed (such as the product name, version, indications of component positions and other information that will be useful in the assembly of electronic components). Again, the PCBs are left to rest in an oven or oven to dry the silkscreen.
The plates bath in solder flux
Finally, the plates bath in solder flux start with new technology in PCB manufacturing AUS – a substance that facilitates the soldering procedure. The flux only adheres to the surface where the copper still exposes. Once the excess of this element removes, the panels can proceed to the final quality inspection.
Quality Visual inspection is necessary
It is not only at the end of the production process that the plates calibrate. Visual inspections, when the human being finds imperfections in the plates. It can happen at different times of the line, varying according to the manufacturer.
Normally, in addition to a last superficial check, at the end of production the new technology in PCB manufacturing AUS go through machines that will test if the electric current is passing through the points specified in the initial project. Once this completes, the printed circuit boards are easy to separate in panels to customers – who will insert the electronic components that will make up the gadgets.