PCB production quality control

The control of the production site is the core part of the quality control of the circuit board. A scientific and reasonable manufacturing management system can effectively ensure the stability of quality. RCY conducts production site management from the following six aspects.

 

1.5S management

5S management, namely finishing (SEIRI), rectifying (SEITON), cleaning (SEISO), cleaning (SEIKETSU), and literacy (SHITSUKE). It is the basis of production site management, and RCY attaches great importance to 5S management. The first thing to do every day at work is to arrange for employees to clean the equipment, place production tools in designated locations, and clean the workshop. A tidy production environment can not only make employees happy but also avoid the impact of the environment on products to a certain extent, thereby improving product quality.

 

2. Standardized work

Standardized operation is the cornerstone of modern production management, and the skill and proficiency of personnel will affect the stability of quality to a large extent. Therefore, we have established a complete standardized operation training system. All employees must first train their professional skills before taking up their jobs, and then we will conduct practical and theoretical assessments on the skills of the employees. Only those employees who have passed the assessment can take up their jobs.

 

3. Equipment maintenance

Equipment maintenance is also an indispensable link in on-site management. We will carry out daily maintenance, weekly maintenance, monthly maintenance, and annual maintenance according to the characteristics of the equipment to keep the equipment in the best working condition. As the equipment is in use, the process capability will fluctuate or decline, so we will periodically verify the equipment’s capability by MSA to ensure the stability of the equipment’s process capability. Similarly, the potion used in the production equipment will also fluctuate. Therefore, we stipulate that at most 8H, we have to test the chemical potion once and make the corresponding SPC trend record to ensure the stability of the potion.

 

4. Inspection equipment

For almost every circuit board RCY produces, there will be a corresponding inspection process for every process that flows. For example, after the film is produced, we will use the second dimension to measure the expansion and contraction coefficient of the film and use the film AOI to measure whether the film is consistent with the Gerber data. After the circuit is etched, we measure the line width and line spacing of the circuit board and also use AOI to measure whether the circuit is consistent with the Gerber data. After the pressing is completed, we will use a tensile tester to measure the bonding force between the layers. After the finished product is cleaned, we will conduct an electrical test to ensure that the electrical performance of the circuit board is qualified.

For laboratory equipment, such as microscopes, X-RAY, etc., we will regularly invite third parties to perform calibration to ensure the accuracy of the equipment.

 

5. Production records

Every time the circuit boards go through a process, we will record the products accordingly to facilitate traceability after quality problems occur.

 

6. IPQC audit

We have a professional IPQC team responsible for random inspection of the first article and process, which can monitor the quality of the product in time. At the same time, they will also inspect the production line from time to time, so that illegal operations in the production line can be found in time and stopped in time.

 

The management of the production site is trivial, meticulous, and requires persistent work. Only continuous and high-standard requirements can ensure product stability and consistency.

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