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Thread: bell repair
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17th Apr 2022, 04:20 PM #1Intermediate Member
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bell repair
As some here know I make bells. The bells are made using bell metal, 80%cu 20%sn, I have a bell that has a cavity in the very top of the bell where some clay had dislodged from the mold and lodged itself in the top of the bell. Fortunately it does not affect the performance of the bell but it does reduce the hanging strength.
My question is would silicone bronze mig welding do the trick to fill the cavity, any tips and advice would be appreciated?
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22nd Apr 2022, 12:14 PM #2Senior Member
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A lonnng time ago I saw a full size nude female bronze statue!
It was in an artist's studio in Philadelphia, USA. The bronze was sitting in a cane chair. When I saw it I thought that the cane chair could not possibly support the weight of the statue - being bronze. It turned out to be some kind of plastic / epoxy or something like that. It was hollow, looked like bronze, but was indeed plastic.
Perhaps for the repair, if you need aesthetics without affecting the bell's sound then an epoxy / plastic solution may work.
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22nd Apr 2022, 04:42 PM #3Intermediate Member
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Thanks A J, I was thinking along the same line so I had this shipped express, it literally arrived 20min ago. It will be interesting how it works what it looks like when patched. This stuff going by the price is gold not bronze! once I have patched it with this gear I will give some feed back!
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23rd Apr 2022, 01:06 PM #4Senior Member
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Bell repair.
Hello from the old goat.
Years ago I had a customer casting in Sil brz. He used mig welding with Sil Brz wire to repair defects. It will be a bit redder in colour as the CU content is 97%. 0.9mm wire only runs between 90 and 115A. You will have to clean up all the porosity first.
Regards
BC
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23rd Apr 2022, 02:47 PM #5Intermediate Member
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I tried yesterday Mig welding Silicon bronze wire on a test piece of bell metal, while it did weld it did not feel or look right, I don't know how to explain it other than the base metal seemed to melt away. I tried welding a piece of heinz brass and it welded really well. After the test welds I have ruled out mig welding silicone bronze on bells at this point.
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23rd Apr 2022, 03:42 PM #6Senior Member
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If you have a scrap of the same bronze, either oxy braze or maybe tig. With the same metal the repair will be invisible.
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24th Apr 2022, 12:26 PM #7
could you lead wipe it ? surely that would do the job
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24th Apr 2022, 01:52 PM #8Intermediate Member
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27th Apr 2022, 09:41 AM #9Intermediate Member
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Well it filled the hole nicely and over all I am happy only because it will not be visible as it is on the top! The epoxy seems to be high quality but as for calling it a bronze fill or a putty, I think not, its a brown with a metallic fleck when applied and dries, but once machined and it loses it shine it is just a dirty brown. Why I would not call it a putty is because it flows just like other epoxy glues and flows to a horizontal level.
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