What is the problem with golden holes in PCB circuit boards? What are the causes of “golden holes”? Why does the PCB gold hole problem trouble PCB circuit board manufacturers? Below, Jiangxi Intelligent Technology Co., Ltd. will share the answer with you, and based on 20 years of experience in hole plugging, soldering mask, character screen printing technology and energy-saving oven baking and drying technology in the PCB industry, we will introduce to you the golden holes of PCB circuit boards. Phenomenon, how does Xinjinhui Ink provide a solution that takes both economic benefits into account?
1. What is the problem with the golden holes of PCB circuit boards?
The golden hole of the PCB circuit board refers to the yellowing of the through hole; the yellowing of the hole will cause a series of problems such as appearance problems, electrical performance problems, circuit reliability problems, production quality and efficiency, etc.
1. Appearance problem: Yellowing of the orifice affects the appearance quality of the PCB circuit board, making it look unsightly and may even cause complaints from customers.
2. Electrical performance issues: It may have a certain impact on the electrical performance of the circuit, such as increasing resistance or reducing conductivity.
3. Reliability issues: It may reduce the reliability of the circuit, such as increasing the risk of short circuit or open circuit.
4. Production quality and efficiency issues: If there are defects in the production process, it will greatly affect product quality, reduce production efficiency, and increase production costs.
2. What are the causes of “golden holes”?
1. The green oil does not take enough time to solidify, causing the green oil on the vias to flow faster in the high-temperature oven, causing the vias to turn yellow.
2. When the circuit board is making via holes, if the ink does not completely cover the copper surface of the via holes, the copper foil in the via holes will be exposed to the air, which will accelerate the oxidation reaction of the copper foil and make the via holes yellow.
3. During the production process of the circuit board, if it has been operated or processed many times, some of the green oil around the via holes may be scraped off or worn, exposing the via holes to the air, causing an oxidation reaction, causing the via holes to become damaged. Yellowing.
4. During the silk screen printing process of the circuit board, if the ink is lightened, bubbles may appear when the ink is filled, causing holes and yellowing around the via holes.
Regardless of the cause of the yellowing of vias, corresponding measures need to be taken during the production process to solve the problem, such as adjusting the curing time of green oil, improving the coverage effect of ink, strengthening quality control during the production process, etc., in order to Ensure circuit board quality and reliability meet expected levels.
3. Why is the PCB golden hole problem causing trouble to PCB circuit board manufacturers?
The accuracy of ordinary plugging machines cannot meet the requirements, resulting in easy misalignment between the aluminum sheet and the substrate, causing the ink to not plug in. To solve this problem, a common method is to lighten the ink concentration during the production process so that the ink can be filled; but this This method will cause the shrinkage force to be too large during later baking, resulting in voids, thinning of the ink, and the so-called “golden hole” phenomenon, which will affect the quality and value of the product and even make it unacceptable to customers. However, the cost of using it will be too high. High, thus putting PCB manufacturers into a dilemma.
4. Why is Xinjinhui ink resin hole plugging machine a solution with excellent economic benefits?
In response to the phenomenon of golden holes in the market, Xin Jinhui understood the core of the problem, understood the fundamentals of technology, continuously innovated and made breakthroughs, and upgraded technology. He developed a high-precision ink resin plugging machine and developed a self-developed pressurization system. The plugging process removes excess gas. For extrusion, it is recommended to adjust the ink concentration to a viscosity of 300-500 to ensure that the holes are plugged accurately and stably with one cut, without the need for repeated plugging. It is high-efficiency, high-quality, and efficient. It reduces the shrinkage of the orifices during baking and avoids the appearance of ink at the orifices. The thinning completely solves the “golden hole” phenomenon, so that customers no longer need to worry about this problem.
Xinjinhui ink resin hole plugging machine has high economic benefits to solve the problem of golden holes in PCB circuit boards. The equipment price difference between ink resin hole plugging machine and vacuum hole plugging machine is huge, which is undoubtedly an extremely economical and cost-effective choice; secondly, Xinjinhui pressure hole plugging machine The production capacity efficiency is much higher than that of the vacuum plugging machine, and the production process is more mature. Compared with the investment, it can stably and continuously create high returns for customers; therefore, the Xinjinhui ink resin plugging machine can be called the gold of PCB circuit boards. A dual-optimal solution to the hole problem with economic benefits.
Post time: Jul-15-2024