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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Degassing Casting metal - Web Update
Thank-you to all for the ideas posted and messages on improving the
quality of Alum Castings. (last week or the week before...) The area I focused on was trying a Chlorine Degassing process as outlined by Tim W. Below are the links to Part #1 & 2 of how it's coming along. http://www.theworkshop.ca/casting/Fo...ry7/Fndry7.htm http://www.theworkshop.ca/casting/Fo...ry8/Fndry8.htm Frank www.theworkshop.ca |
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Frank wrote:
Thank-you to all for the ideas posted and messages on improving the quality of Alum Castings. (last week or the week before...) The area I focused on was trying a Chlorine Degassing process as outlined by Tim W. Below are the links to Part #1 & 2 of how it's coming along. http://www.theworkshop.ca/casting/Fo...ry7/Fndry7.htm http://www.theworkshop.ca/casting/Fo...ry8/Fndry8.htm Frank www.theworkshop.ca Looks like you are cooking now! Good job. Martin -- Martin Eastburn, Barbara Eastburn @ home at Lion's Lair with our computer NRA LOH, NRA Life NRA Second Amendment Task Force Charter Founder |
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I had problems in my aluminium castings, was referred to 'nitrogen
pellets' - you stir them in with a steel 'swizzle stick' thingie. I was told that the bubbles are hydrogen. Frank wrote: Thank-you to all for the ideas posted and messages on improving the quality of Alum Castings. (last week or the week before...) The area I focused on was trying a Chlorine Degassing process as outlined by Tim W. |
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Roadwarrior1969 wrote:
I had problems in my aluminium castings, was referred to 'nitrogen pellets' - you stir them in with a steel 'swizzle stick' thingie. I was told that the bubbles are hydrogen. Frank wrote: Thank-you to all for the ideas posted and messages on improving the quality of Alum Castings. (last week or the week before...) The area I focused on was trying a Chlorine Degassing process as outlined by Tim W. That is what they are - Nitrogen pellets ? I have used pool tablets - the thumb size for small pools the chlorine steals the hydrogen makes HCL (gas) and the calcium turns out as scum. Something like that. Martin -- Martin Eastburn, Barbara Eastburn @ home at Lion's Lair with our computer NRA LOH, NRA Life NRA Second Amendment Task Force Charter Founder |
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