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What should we pay attention to in patch processing?

What should we pay attention to in patch processing?

  • Categories:Company news
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  • Time of issue:2022-07-21
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(Summary description)The SMT chip processing factory said that the SMT chip processing requires a variety of equipment such as solder paste printers, placement machines, reflow soldering, AOI detectors; ; Next, let's go into the details.

What should we pay attention to in patch processing?

(Summary description)The SMT chip processing factory said that the SMT chip processing requires a variety of equipment such as solder paste printers, placement machines, reflow soldering, AOI detectors; ; Next, let's go into the details.

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2022-07-21
  • Views:0
Information

The SMT chip processing factory said that the SMT chip processing requires a variety of equipment such as solder paste printers, placement machines, reflow soldering, AOI detectors; ; Next, let's go into the details.

 

1.S Solder Paste Printer. Modern solder paste printers are generally composed of printing, solder paste, imprinting, power transmission substrates and other mechanisms. Its working principle is to first fix the printed circuit board on the printing positioning table, and then use the left and right scrapers of the printing machine to leak the solder paste and red glue to the corresponding pads through the steel mesh, and the evenly leaked PCB is fed into the placement machine through the transfer table. Automatic placement.

 

2. Mounter: Also known as mounter. The surface mount system is a production equipment that correctly configures the surface mounter by moving the mounter. According to the installation accuracy and installation speed, it is usually divided into high speed and ordinary speed.

 

3. There is a heating circuit inside the reflow soldering. After heating the air and nitrogen gas high enough, blow it onto the PCB board attached to the part so that the solder on both sides of the part melts and sticks to the motherboard. The advantages of this process are that the temperature is easy to control, oxidation can be avoided during the welding process, and the production and processing costs are easy to control.

 

4. The full name of AOI is the production equipment that detects common defects in welding production based on the principle of utomaticoptic. AOI is an emerging testing technology, but it is developing rapidly. Many manufacturers have introduced AOI test equipment. During the automatic inspection process, the machine automatically scans the PCB through a camera and collects images. Test solder joints are compared with qualified parameters in the database. PCB defects are detected by image processing, and repair personnel repair defects/displays by display or automatic display.

 

5. Parts foot scissors. For clipping and deforming pins.

 

6. Wave soldering. Peak soldering is to make the soldering surface of the plug-in board in direct contact with the high temperature liquid to achieve the purpose of soldering. Its high temperature liquid welding remains tilted. Because the liquid welding is specially made to form a similar wave, it is called peak welding, and its main material is welding rod.

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