Whether in production, or repair and rework, the cost of soldering iron tips can be easily overlooked, but with today’s requirement for higher temperatures in lead-free solder applications, the consumption of tips has dramatically increased. This fact, combined with changes in tip design to meet the higher thermal load requirements, has also resulted in escalating tip costs, making tip care a high priority.
In short, higher melting temperatures have resulted in:
However, there are ways to improve tip life and reduce cost. Some key points to remember when soldering include the following:
Suggested Tip Care Procedures
The solder tip needs to be cleaned and tinned whenever the soldering iron is not in use. Tip life on soldering irons that have very fast thermal response, such as Thermaltronics Curie Heat Technology Soldering Irons, can be extended, if the following procedures are followed:
Procedure #1: Tin the tip before putting it into storage.
1. Turn off power supply.
2. Clean tip with brass curls.
3. Tin tip with solder.
4. Replace the hand piece in the work stand.
Note: It is recommended to turn the power supply off before cleaning the tip for storage. This will reduce the oxidation while performing maintenance of the tip with brass curls.
Procedure #2: Always keep the tip tinned when in use.
1. Select right size tip geometry for the joints being soldered. Ideally, it should be the largest possible size necessary to accomplish a good solder joint.
2. Do not apply too much force on the tip during soldering.
3. Use brass curls to clean the tip because this is better than a water-soaked sponge.
4. Use a soft brass brush for tough oxidation buildup or whenever brass curls may have difficulty in removing the oxidation from the tip surface.
5. Use tip tinner. Thermaltronics tips have more plating on the working end of the tip and this extra plating allows operators to use tip tinner/cleaner (TMT-TC-2) to restore tip life.
Note: When iron plating is exposed to water and oxygen, it corrodes. Oxidation is a chemical process that is caused by the interaction between oxygen and other elements that come from all kinds of fluxes, water, etc.
Suggested Tip Care Recovery Procedure
A) For heavily oxidized tips, the following procedure should be followed:
Note: Most soldering tips operate at 375˚C+ and since the typical lead-free solder wire melt temperature is ±217˚C, there is still sufficient thermal energy left in the tip to complete the above process. If power is left on during the cleaning process, the power supply will drive more thermal energy to the tip and try to heat the tip tinner or wire brush.
B) If the tip is not badly oxidized but is still in need of cleaning:
C) For applications where a sponge is in use:
If the above procedures are followed, tip life can be maximized.
Thermaltronics is a manufacturer and supplier of a wide range of soldering products and accessories used in the electronics manufacturing industry. Design and development is undertaken in the USA and Australia, with final production taking place in a customised manufacturing facility, incorporating specialised equipment and in accordance with recognised international standards of quality and compliance.
In addition to the modern factory, Thermaltronics maintains an office and warehouse in New York State, commercial offices in Hong Kong, and a Distribution Sales Office in Perth, Australia.
Thermaltronics embraces both strict quality control and conformance with International Manufacturing Standards, is in compliance with ISO 9000 and ISO 14000 and holds certification in TuV, GS, NRTL & CE. Product warranties are among the best in the industry and distribution of the company’s products is available worldwide. For further information, click here.