For the quality of the circuit board, there are generally short circuit, open circuit, green oil foaming, green oil falling off, red text, substrate delamination, plate curling, pad detachment, poor tinning and open circuit board after aging. problem. The root cause of these common board quality problems is that the circuit board factory production process is not enough, the production equipment is backward, the raw material selection is inferior, and the management is chaotic.
Reason one: PCB raw material selection is cheap and inferior. The quality of raw materials is the cornerstone of the quality of the circuit board. The material itself is not closed. The circuit will be foamed, layered, cracked, warped, and uneven. What is more concealed now is that some of the circuit board manufacturers use materials that are mixed, some are genuine sheets, and some are edge materials, to dilute the cost. The hidden danger is that you don't know which batch will have problems. Due to the different characteristics of the board, some board requirements are not high, so some edge materials used in this case can not show obvious problems, which makes many circuit board manufacturers such a practice, and because of the price The low price has also won the customer's preference. Circuit board manufacturers are encouraged to continue to take such an adventure. In the long run, if there is a substrate problem that causes quality problems in the finished product, it is often a huge loss, and sometimes it is impossible to restore the reputation and brand of the company. This is why the regular board manufacturers will not do this.
Reason 2: The production equipment of the circuit board is backward. The equipment guarantees the quality from the hardware, increases the investment on the equipment, and makes the equipment efficient and stable is the fundamental way to improve the quality of the circuit board. With the advancement of technology, the replacement of circuit equipment is getting faster and faster, the equipment is more and more advanced, and of course the price is getting more and more expensive. This has led to the inability of some small circuit board manufacturers to add more expensive equipment, resulting in increased reliance on employees. The current labor cost is inherently high. Once the formation of a reliance on skilled and skilled employees, the management difficulty of the circuit board factory will be greatly increased. Once the flow of personnel occurs, the quality of the circuit board will fluctuate.
Reason three: The circuit board production process is not closed. Circuit board production is a high-tech industry, involving electroplating, chemicals, machinery, and other interdisciplinary subjects. The various processes of circuit board production must be carried out in accordance with strict production processes. At the same time, each process must be equipped with corresponding testing and testing equipment. These process parameters and equipment can guarantee the stability of the board quality. It is undeniable that the circuit board industry is a polluting industry. Many practitioners and even bosses entering this industry are quite half-way, so many small circuit board factories only care about the price, as long as they can reduce the cost, in the production process and circuit board quality. I don't care at all. The concentration of the syrup in the electroplating process is a parameter that changes from time to time. The current magnitude and time of the electroplating process are different for different types of circuit boards, and these parameters are combined to affect the quality of the board. Only strict production process guidance, production according to process parameters, and continuous testing and inspection can ensure the quality of the produced circuit board is always stable. If the production is organized by experience, there is a quality problem, and the syrup is added by the feeling. This directly leads to the fluctuation of the quality of the circuit board. The customer will use this circuit board to have a high repair rate, low yield, and the surface looks like a circuit board. The procurement cost is reduced. In fact, the maintenance cost of repair and repair is greatly improved. At the same time, the customer brand is affected, and it is not economical to look at it in the long run.
Reason four: management confusion. The circuit board factory has many production processes and long cycle. How to realize scientific and orderly management, and at the same time reduce management costs. This is a difficult problem, that is, it is well managed, manageable, and managed cheaply. This requires long-term accumulation of circuit board manufacturers. . With the advancement of technology, especially the development of the network, it is possible to manage traditional circuit board factories by means of network information. A breakthrough in this area can form a core competitiveness. In a poorly managed factory, the quality of its circuit boards will naturally fluctuate frequently, and various problems will emerge in an endless stream.
To sum up: The quality of the board is a very serious problem, and it is the result of the long-term efforts of the board factory, the continuous efforts in management, integrity, investment and absorption of new technical means.