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Old 07-26-2018, 07:17 PM
Art Freas Art Freas is online now
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Double Checking on Cane Test

Quick question on cane testing.

You pull the pencil sized cane and put it directly in to the annealer, right? Or do you pull the cane and let it cool?
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Old 07-26-2018, 07:56 PM
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I don't anneal pencil sized cane.. I make lots ..
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Old 07-26-2018, 08:03 PM
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what test are you trying to achieve?
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Old 07-27-2018, 01:31 PM
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Your cane test with the pencil lead size between the bricks cantilevered out.
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Old 07-27-2018, 02:28 PM
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Ah, you posted pencil sized cane not pencil lead sized.

I can now assume you are checking your annealing temp. I pull and cool it. I don't care for being burned.

Pull some pencil lead diameter cane, around 4mm if that's clearer. Stick it between two bricks cantilevered out as suggested. Take the lehr up to 900F and after fifteen minutes, look at the cane. It still is straight, increase the temp to 925. Wash rinse repeat. Don't for get the fifteen minutes part . At a certain temp, that cane will slump hard. When it does, take 50F off of your control temp. That will give you a good notion of the upper range of the annealing range and remember it is a range. The hotter you can anneal, the faster the strain is relaxed. At the bottom end, the strain point is the point below which no further annealing can occur. From there on, you're trying to prevent thermal shock.
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Old 07-28-2018, 02:42 PM
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Thanks much, appreciate the help!
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