Content area
Full Text
Basic Training
Defluxing processes generate waste byproducts, which may adversely impact the environment via emissions to the air, chemically contaminated liquid effluents and solid wastes. Waste byproducts are generally at temperatures well above ambient. The total byproducts that must be managed depend upon the circuit assembly manufacturing process, including the materials used in assembly, soldering and defluxing. All byproducts must be controlled and disposed of with concern for environmental stewardship and regulations. While environmental concern should be universal, specific regulations are dependent on local, state and federal legislation.
The waste byproducts and related concerns include: temperature; acidity or basicity (pH); total heavy (toxic) metals; organic chemicals (COD); biodegradability (BOD); fats, oils, greases (FOG); volatile organic compounds (VOC); and suspended solids.
In addition to the effect on the environment, manufacturing operations using defluxing processes must take into consideration the total capital and operating costs involved; the potential liability for safety and toxicity issues;...