What is the nature of reflow welding in PCB manufacturers? The essence of reflow welding is “heating”, the core of the process is to design the temperature curve and set the furnace temperature. The temperature curve refers to the “temperature-time” curve developed by the technician based on the representative package and solder paste of …
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Introduction of FPC manufacturing and assembly process FPC is also known as flexible circuit board, FPC PCBA assembly welding process and hard circuit board assembly is very different, because the hardness of THE FPC board is not enough, more soft, if you do not use a special carrier, can not complete the fixation and transmission, …
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What factors affect solder paste printing in PCBA processing? Solder paste printing is very important for PCBA. It directly affects the overall soldering effect of PCBA. In the process of PCBA processing, how to do solder paste printing has become a problem that must be considered by production managers. The effect of solder paste printing …
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What are the operating procedures and precautions for SMT high-speed placement machines? In general, a placement machine with a theoretical placement speed of 30 000 to 60 000 pieces/h per hour is called a high-speed placement machine, which is mainly used for placement of small chip components and small integrated components. However, during the operation …
What are the applications of PCBA circuit boards in daily life? Printed circuit boards are the most important components in all electronic devices and products. In most cases, these boards are used every day without even realizing what they are. If you turn on the broken remote control, you will see a lot of wires …
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At present, the placement machine can be roughly divided into four types: boom type, compound type, turntable type and large parallel system. Different types of pcb placement machines have their own advantages and disadvantages, which usually depend on the requirements of the application or process on the system, and there is also a certain balance …
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PCB assembly machines are the most critical equipment for pcba production lines, with the highest technical and stability requirements. PCB manufacturing plants must have these equipment before processing. For more than 10 years, Chinese companies are still in the exploration stage and prototype trial production stage. They have not launched mature products that have passed …
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In the 20th century, with the rapid development of modern electronic technology, SMT technology has become more and more popular, the size of the chip is getting smaller and smaller, and the pin of the chip is increasing, especially the BGA chip that has appeared in recent years. The pins of the BGA chip are …
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1. Feeder The feeder manufactured by PCB is used to carry components in various packaging forms, and is a device for the placement head to pick up components efficiently and accurately. Due to the wide variety of SMC/SMD and the various packaging forms, the packaging forms are also diverse. Usually components are tape-taped packaging, tube …
Why should solder paste printing equipment be regularly maintained? The printing quality and service life of the printing machine, in addition relate to the accuracy of the machine manufacturing, are also largely dependent on the maintenance and lubrication during use. In order to guarantee the quality of printing, improve the utilization rate of equipment, prolong …
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In the solder paste printing machine, the operation of the equipment is controlled through the operation of the software, including the blade stroke, the solder paste printing speed, the blade pressure, etc. 1.In the operation menu of the printing machine, the parameters required in production can be modified to reach the required value, and can …
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Printing is a process based on hydrodynamics. It can be maintained repeatedly and apply a fixed amount of solder paste on the surface of the PCB. The top of the PCB is kept at a certain distance from the screen or stencil (non-contact type) or completely attached (contact type), and the solder paste or adhesive …
