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The factors affecting the quality of reflow soldering
The factors affecting the quality of reflow soldering are as follows 1. Influencing factors of solder paste The quality of reflow soldering is affected by many factors. The most important factor is the temperature curve of reflow furnace and the composition parameters of solder paste. Now the c...Read more -
SMT quality analysis
The common quality problems of SMT work including missing parts, side pieces, turnover parts, deviation, damaged parts, etc. 1. The main causes of patch leakage are as follows: ① The feeding of component feeder is not in place. ② The air path of the component suction nozzle is blocked, the suctio...Read more -
What is AOI
What is AOI testing technology AOI is a new type of testing technology which has been rising rapidly in recent years. At present, many manufacturers have launched AOI test equipment. When automatic detection, the machine automatically scans PCB through the camera, collects images, compares the te...Read more -
The difference between laser welding and selective wave soldering
As all kinds of electronic products are beginning to be miniaturized, the application of traditional welding technology to various new electronic components has certain tests. In order to cater to such market demand, among the welding process technology, it can be said that the technology is cont...Read more -
Function analysis of various SMT appearance inspection equipment AOI
a) : Used to measure the solder paste printing quality inspection machine SPI after the printing machine: SPI inspection is carried out after the solder paste printing, and defects in the printing process can be found, thereby reducing the soldering defects caused by poor solder paste printing to...Read more -
SMT testing equipment application and development trend
With the development trend of the miniaturization of SMD components and the higher and higher requirements of the SMT process, the electronic manufacturing industry has higher and higher requirements for testing equipment. In the future, SMT production workshops should have more testing equipment...Read more -
How to setting of furnace temperature curve?
At present, many advanced electronic product manufacturers at home and abroad have proposed a new equipment maintenance concept “synchronous maintenance” in order to further reduce the impact of maintenance on production efficiency. That is, when the reflow oven is working at full cap...Read more -
Requirements for lead-free reflow oven equipment materials and construction
l Lead-free high temperature requirements for equipment materials Lead-free production requires equipment to withstand higher temperatures than leaded production. If there is a problem with the equipment material, a series of problems such as furnace cavity warpage, track deformation, and poor se...Read more -
The two points of controlling wind speed for reflow oven
In order to realize the control of wind speed and air volume, two points need to be paid attention to: The speed of the fan should be controlled by frequency conversion to reduce the influence of voltage fluctuation on it; Minimize the exhaust air volume of the equipment, because the central loa...Read more -
What new requirements does the increasingly mature lead-free process put on the reflow oven?
What new requirements does the increasingly mature lead-free process put on the reflow oven? We analyze from the following aspects: l How to obtain a smaller lateral temperature difference Since the lead-free soldering process window is small, the control of the lateral temperature difference is...Read more -
The increasingly mature lead-free technology requires reflow soldering
According to the EU’s RoHS Directive (Directive Act of the European Parliament and the Council of the European Union on the restriction of the use of certain hazardous substances in electrical and electronic equipment), The directive requires the ban on the EU market to sell electronic and ...Read more -
Solder paste printing solution for miniaturized components 3-3
1) Electroforming stencil The manufacturing principle of the electroformed stencil: the electroformed template is made by printing the photoresist material on the conductive metal base plate, and then through the masking mold and ultraviolet exposure, and then the thin template is electroformed i...Read more
