During wave soldering, contact between the molten solder and the surrounding inert gas atmosphere results in metallic deposits on the surface of the solder joint, known as 'solder dross'. Indium now offers additional solder bars for its Indalloy291 solder pots as a supplement to its product range in order to guarantee their specifications in the long term. Indium also carries out corresponding analyses for this purpose.
The Dross Reduction Bar helps to reduce deposits in the Indalloy291 solder pot. Due to the reduced slag formation, it reduces the loss of solder material and thus offers the user a considerable cost advantage. If, during wave soldering, the molten solder comes into contact with a printed circuit board - such as an OSP board (organic solderability preserve) - with copper contacts, this can increase the copper content in the Indalloy295 solder pot to an unacceptable level. This affects the wetting behavior and the correct appearance of the solder joints. The Replenisher Bar from Indium Corp. can be used to reduce the copper content to the recommended specification of the solder pot. Indium also offers a recycling program for solder and choke. During wave soldering, up to 50% of a solder bar remains as choke, with solder material that is often still usable. Indium can recycle this material and remunerate the user or remold it into usable ingots for a fee.
