PCBA Tech - Choose the right PCBA factory and SMT whole line

1. Choose the right PCBA factory

Nowadays, many companies are entangled in the same problem of choosing a PCB factory. They will always struggle with the hurdle of choosing a PCBA processing manufacturer, because they don’t know where to start to make a correct choice; choose a high-quality and high-efficiency The high-service PCBA processing factory is here as the industry's professional one-stop PCBA service platform. Today, Shenzhen Shiyan SMD Factory will briefly explain to you how to quickly find a suitable PCBA processing manufacturer.

First, look at the PCBA manufacturer’s smt technology and equipment. PCBA processing and production requires very professional and highly equipped equipment, such as high-speed placement machines, multi-temperature reflow soldering, etc. If the manufacturer has many advanced production equipment, it means that it has Certain production capacity.

Second, look at the price of PCBA production. Generally speaking, the price of PCBA processing and production is relatively transparent. There are high prices and low prices, but it is not "the low price wins". Some PCB manufacturers will buy through formal channels. The original components are strictly controlled by quality, which increases the cost of PCB processing. Some PCB manufacturers deliberately cut corners to reduce the price. Therefore, we should base on our actual demand for quality, efficiency, service, and Choose the cost-effective PCBA manufacturer based on the situation.

Third, look at the product placement of the PCBA processing factory, mainly observe whether the placement of incoming materials, semi-finished products, products to be inspected, and finished products is reasonable and clear and meets the standards, and whether there are turnover carts and electrostatic boxes that can help improve product safety and reliability. Such protective measures, through these detailed work processing, can reflect whether the PCB manufacturer's ability to grasp the details of each process step in the processing link is strong or not.

Fourth, look at the service attitude of PCB board manufacturers. PCBA processing manufacturers with good service attitudes can take the initiative to take responsibility, respond quickly to corporate needs, and help companies solve difficult problems. Only a good sense of service can enhance the sense of trust of the company. Better facilitate order cooperation.

2. The main equipment and operation process required for SMT production

The full name of smt is Surface mount technology, which means surface mount technology in Chinese. SMT equipment refers to the machinery and equipment used in the production process of the SMT workshop. To configure different SMT production lines, this smt production line can be divided into semi-automatic SMT production line and fully automatic SMT production line, but the production line machinery and equipment of each SMT workshop are roughly the same, but the following SMT workshop equipment is a relatively complete and rich configuration smt The production line, the specific ten process steps are as follows:

(1) Board loading machine: When the PCB circuit board is placed in the shelf, it will automatically transfer the PCB circuit board to the board suction machine;

(2) Suction board machine: After sucking the PCB circuit board, place it on the track, and then automatically transfer it to the solder paste printer;

(3) Solder paste printer: accurately print solder paste or patch glue on the pads of the PCB circuit board to prepare for component placement. The printers used for smt technology equipment are usually divided into: manual Three types of equipment: printing machine, semi-automatic printing machine and fully automatic printing machine;

(4) SPI: SPI is the abbreviation of Solder Paste Inspection. It is called solder paste inspection machine in Chinese. It is mainly used to detect the quality of printed PCB circuit boards of solder paste printers, and to detect the thickness, flatness, printing area and other functions of solder paste printing;

(5) Mounter: Use the program programmed by the smt technician before the job to accurately install the components on the fixed position of the printed PCB circuit board. The mounter can be divided into a high-speed mounter and a multi-function mounter. High-speed placement machines are generally used to mount small chip components. Multi-functional and widely used placement machines are mainly used to mount large components or components in rolls, disks, or tubes, and are characterized by high placement accuracy, but The installation speed cannot reach the effect of the high-speed placement machine;

(6) Connecting station: a device for transmitting PCB circuit boards;

(7) Reflow soldering: It is arranged behind the placement machine in the SMT production line to provide a heating environment to melt the solder paste on the pads, so that the surface mount components and the PCB circuit board pads are firmly fixed through the solder paste alloy mix together.

(8) Unboard machine: Automatically collect PCBA through the transmission track.

(9) AOI inspection: Automatic optical identification and inspection system, which is the abbreviation of English (Auto Optical Inspection), is called automatic optical inspection in China. It is now widely used in the appearance inspection of circuit board assembly lines in the electronics industry and replaces the previous manual visual inspection. Check. During automatic detection, the machine automatically scans the PCBA through the camera, collects images, and compares the tested solder joints with the qualified parameter values in the database. After image processing, the defects on the PCBA board are checked, and the PCBA board is displayed through the display. Defects are displayed/marked out for maintenance personnel to further repair defective boards.

(10) X-RAY: Mainly used to detect the mounting quality of various industrial components, electronic components, and circuits.