PCB production equipment quality appraisal

PCB production equipment is based on precision mechanical control and chemical processing technology. It realizes printed circuit board manufacturing through processes such as pattern transfer, etching, and electroplating. It is widely used in electronic information, communication equipment, automotive electronics and other fields. In the manufacturing of smartphones, it completes micron-level circuit processing of chip packaging substrates; in the construction of communication base stations, it ensures the high-precision manufacturing of 5G high-frequency circuit boards; in the field of new energy vehicles, it realizes the reliable production of battery management system circuit boards. Compared with ordinary electronic equipment, PCB production equipment has the characteristics of high precision, high stability, and high cleanliness, and is the core equipment of the electronics industry.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for PCB production equipment. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for tunnel boring machine quality appraisal.

With the development of intelligent and high-precision PCB production equipment, quality dispute cases are gradually increasing. The judicial dispute focuses on:

1. Disputes over performance indicators: whether the positioning accuracy of the exposure machine meets the standard and whether the etching uniformity meets the design value;

2. Material and process defects: the roller material has insufficient corrosion resistance, chemical The liquid concentration control is unstable;

3. The control system fails: the repetitive positioning accuracy of the robotic arm is out of tolerance and the sensor calibration error causes the process parameters to deviate;

4. Contract performance issues: the delivered equipment does not match the technical agreement.

PCB production equipment quality appraisal technical methods include:

1. Appearance inspection: Check the appearance of the equipment for scratches, deformation or other abnormalities.

2. Functional test: Functionally test the equipment according to the equipment operating procedures to evaluate whether the performance of the equipment meets the requirements.

3. Precision measurement: Use professional measuring instruments to measure the accuracy, stability and repeatability of the equipment.

4. Safety detection: Check whether the device complies with relevant safety standards and evaluate whether the device has safety hazards.

An electronic manufacturing company of the applicant signed a "PCB Etching Machine Purchase Contract" with an equipment company of the respondent, agreeing to purchase 5 etching machines of model ET-1000. After being put into production, the etching uniformity of the circuit board was extremely poor (the etching factor was only 2.0), and the yield dropped by 30%. The manufacturing company believed that the equipment had quality defects and demanded compensation for losses. The equipment company argued that the problem was caused by improper operation, and both parties went to court.

Identification and analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of "PCB production equipment", contract technical agreements, on-site investigation case materials and other data, and made the following quality analysis opinions:

The etching liquid circulation pump impeller of the PCB production equipment involved in the case is made of cast iron (the contract requires 316L stainless steel), Cr The content is only 12%, and the corrosion resistance is insufficient; the nozzle material is ordinary engineering plastics (polytetrafluoroethylene is required by the contract), and the temperature resistance is insufficient, resulting in deformation. The nozzle clogging rate reaches 15% (standard ≤5%), the liquid injection pressure deviation exceeds ±10%; the response time of the temperature control system exceeds 30 seconds (standard ≤10 seconds), and the etching liquid temperature fluctuates ±5°C.

The equipment company failed to provide corrosion-resistant material pump bodies and nozzles according to the contract, and the process parameter control was not up to standard, which constituted a fundamental breach of contract and was the main reason for the equipment problems.

PCB production equipment quality appraisal report should include the following content:

1. The purpose and basis of the appraisal.

2. Model, specification, manufacturer and other information of the equipment being identified.

3. Identification method.

4. Identification results (including whether there are quality problems, causes of problems, etc.).