CSCS Toplay Process
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CSCS’s toplay process is a continuous brazing operation where strips of contact material, braze tape and a base metal substrate are fed into a die where they are induction heated. The heating melts the braze tape forming a brazed connection between the precious metal and base metal.The joining process is continuously monitored by a c-scanning unit. The combined strip is then stamped into desired components as per the customers’ designs.
Why Toplay?
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Brief Comparison (Toplay vs. Tip Brazing)
| Toplay | Tip Brazing | |
|---|---|---|
| Minimum Braze Area | 85% | 75% |
| Normal Output | 90%-100% | 85%-90% |
| Bond Quality | 100% Inspection & Control | Sampling/Destructive |
| Braze Thickness | 0.02-0.03 | 0.06-0.10 |
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| Toplay Components | Toplay Strip | Toplay Cross Section |
Toplay remains one of the most effective manufacturing methods for medium to high power devices such as contactors and industrial controls and where parts are subjected to high mechanical loads. The Toplay process allows significant temper to be introduced into the assembly.
Care and attention paid to the tooling design allows efficient material utilization and the improved thermal characteristics which can lead to precious metal savings when compared to individually brazed assemblies.
