Use of Titanium or Titanium Nitride Coating (TiN) in Selective Soldering process

does the company intentionally make their cups of an inferior material, so they can sell frequent replacement parts? Do the cups get damaged by being dissolved or by striking the components as they are stamped?

If you can make a single test part and use the material and see how long it endures.

This only works if mechanical damage is prevented

From the look of it, careful use means that the cup should never hit a part, just immerse the joint and parts in the solder = long life.

Sharp edges of cut components will soon damage the cups = short life.

Actually it disolves, even though we brush them every two hours (manually) by the end of five weeks we have to replace them. We've already ensure that there's no friction between the cups and other components during the process.

So I think that the material or the plating does not resist corrosion well enough to last longer.

I've already made a research and people from other facilities tell me that making cups of Titanium is not such a good idea because it is not a good heat conductive material and that causes problems in the soldering process.

However, I still don't know if TiN coating will develop better results. Suppliers say that it could work because the coating is so dense that no material adheres to it, but I guess I have to test it as you suggest.

Thanks