PCBA Tech - How to control the quality of PCBA processing?

PCBA is a cumbersome processing process. Problems in any link will lead to poor product processing. How to control the quality of PCBA processing? This requires the establishment of a complete ISO quality control system, and each position operates in accordance with the work instructions to avoid the negative impact of human factors to the greatest extent.

From the procurement of raw materials to production and processing to the final shipment inspection, strict standard control is required. The ISO9001:2008 quality management system is strictly implemented, and the production is carried out in accordance with the IPC-A-610E electronic assembly acceptance standard.

The ISO review agency strictly reviews the company's PCBA processing and production quality control plan, and establishes that the production site meets the standards and implements it in accordance with the prescribed quality control plan and measures.

The audit includes the ability of the production operator, the production process and work instructions, the equipment meets the requirements, the purchase and warehousing of raw materials, the production documents, the production site environment and safety assembly, the node setting of the production process, etc., forming a complete set of operations Mentor the plan.

Quality control is an important step to ensure product quality and factory production efficiency. Taking the reflow soldering process as an example, although the furnace temperature control system and temperature sensor in the reflow soldering furnace can be used to control the temperature in the furnace, the actual temperature of the solder joints on the PCB is not necessarily equal to the preset temperature of the reflow soldering. Although the reflow soldering machine works normally, the temperature control is also within the temperature control accuracy range of the equipment. However, due to uncontrollable factors such as the quality of the PCB, the assembly density, and the number of PCBs entering the furnace, the furnace temperature curve will fluctuate accordingly. Therefore, the temperature of the reflow soldering machine must be continuously monitored to ensure the quality control.

Quality control requires technicians to have good measurement knowledge, statistical knowledge, causal analysis capabilities, and an in-depth understanding of equipment performance.

There are variables on the production line. The aging of equipment, the adjustment of personnel, and the quality of materials will all influence and restrain each other, causing fluctuations in the quality of PCBA processed products. Therefore, it is very difficult to adopt effective and continuous quality monitoring methods without affecting production and increasing production costs.

PCB factories should be aware that PCBA is a cumbersome processing process. Problems in any link will lead to poor product processing. The quality of PCBA processing should be controlled.Establish a complete ISO quality control system, and operate each position in accordance with the work instructions to avoid the negative impact of human factors to the greatest extent.