Posted by Gordon England (62.252.0.12) on 19:14:36 07/04/06
In Reply to: Fusing of NiCrBSi posted by Arturas
Hi Arturas
Usually torch fusing is done with oxyacetylene because of its
higher temperature and better control during fusing. Propane is
often used for preheating and getting the bulk of the heat into the
larger parts before finally fusing using oxyacetylene.
Assuming proper fusing by either fuel gas I think the wear and
microstructure would be similar. Possible difference could occur if
using propane, where the fusing may take longer with less control
causing quality problems (incomplete fusion, porosity, pinholes
etc.)which would effect wear and microstructure.
Regards Gordon
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