Key Points of Wave Soldering Equipment Quality Control

 

ETA ultra-high-quality modular wave soldering machine, wave soldering equipment, and DIP wave soldering, for wave soldering of surface mount electronic components to insertion circuit boards (PCB).

1. Adopt management mechanism in product development

People's requirements for welding quality are getting higher and higher. In terms of welding quality, it is important that its reliability should start from the design stage. The US Navy has found that 40% to 60% of the failure causes of military electronic products are design problems.

In production practice, welding defects due to poor PCBA design are endless. For such defects, only by improving operations and innovation.

Art is difficult to work, which has created an embarrassing situation of "congenital deficiency, acquired difficulty". Therefore, the quality control of wave soldering should start at the design stage of PCBA, and let the initial idea run through the whole process before delivery and packaging. At the beginning of each new PCBA design, a mechanism of mutual trust and cooperation between design, process, production and quality inspection personnel must be established. That is to say, it is necessary to implement the parallel technical route of early involvement of process, production and quality inspection personnel in product development. This is the only correct way to solve the welding defects caused by poor design.

2. Establish a strict component solderability management mechanism

The weldability of the metal surface depends on the removal of surface dirt and oxide film and the inherent leap of the metal. Wave soldering practice shows that maintaining good solderability of component leads is the basis for obtaining excellent solder joints, and is an important measure to achieve the best production efficiency with less effort. It is often found in production that as long as the weldability of the welded parts is good, even if the deviation of the welding process parameters is large, a good welding effect can be obtained, that is, the sensitivity to the fluctuation of process parameters is very low. On the contrary, it is particularly sensitive to fluctuations in process parameters, the process window is particularly narrow, it is difficult to operate, and the welding quality is not stable. Therefore, when purchasing components, PCBs, terminals, etc., the solderability and retention limit time must be added to the technical delivery conditions of the components to ensure the proper solderability of the components.

1. Adopt management mechanism in product development

People's requirements for welding quality are getting higher and higher. In terms of welding quality, it is important that its reliability should start from the design stage. The US Navy has found that 40% to 60% of the failure causes of military electronic products are design problems.

In production practice, welding defects due to poor PCBA design are endless. For such defects, only by improving operations and innovation.

Art is difficult to work, which has created an embarrassing situation of "congenital deficiency, acquired difficulty". Therefore, the quality control of wave soldering should start at the design stage of PCBA, and let the initial idea run through the whole process before delivery and packaging. At the beginning of each new PCBA design, a mechanism of mutual trust and cooperation between design, process, production and quality inspection personnel must be established. That is to say, it is necessary to implement the parallel technical route of early involvement of process, production and quality inspection personnel in product development. This is the only correct way to solve the welding defects caused by poor design.

 

2. Establish a strict component solderability management mechanism

The weldability of the metal surface depends on the removal of surface dirt and oxide film and the inherent leap of the metal. Wave soldering practice shows that maintaining good solderability of component leads is the basis for obtaining excellent solder joints, and is an important measure to achieve the best production efficiency with less effort. It is often found in production that as long as the weldability of the welded parts is good, even if the deviation of the welding process parameters is large, a good welding effect can be obtained, that is, the sensitivity to the fluctuation of process parameters is very low. On the contrary, it is particularly sensitive to fluctuations in process parameters, the process window is particularly narrow, it is difficult to operate, and the welding quality is not stable. Therefore, when purchasing components, PCBs, terminals, etc., the solderability and retention limit time must be added to the technical delivery conditions of the components to ensure the proper solderability of the components.

❙ Wave Soldering Machine Video