Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 22, 2007 18:44:57 GMT
I have a carbon steel sword with a short tang and want to weld a piece of bar stock on to make it full tang.
how would the heat from welding effect the temper of the blade?
would grades of bar stock should I avoid?
I will of course have to make a new tsuka
|
|
|
Post by handforgedkatanas on Sept 22, 2007 19:28:09 GMT
Best use the fastest method possible such as arc welding and try to place additional pieces of steel on the blade to help conduct excess heat away and also to protect the blade from any spatter.
|
|
|
Post by Dan Davis on Sept 23, 2007 1:40:24 GMT
- Clamp the existing tang in a metal vise about an inch below the weld point. Do NOT use any sort of wrap (leather, cloth, etc.) as you want the body of the vise to draw away heat from the weld joint. This protects the temper of the blade.
- Use oxy-acetylene and a copper-clad mild steel rod; other forms of welding leave behind a hard, brittle weld joint.
- As soon as you finish welding the joint and it cools down to black, reheat it using your oxy-acetylene rig. Heat the entire tang from just above the vise to well above the weld joint on your new piece of steel, and let it cool slowly. This normalises the joint and the surrounding steel, relieving stresses and reducing the chance of fracture.
- FILE the weld joint down, do not use a grinder. You do not want to reheat the filler metal by high speed grinding
I use mill grade 1020 simple carbon steel when I do this, but plain old A36 structural will work and you can find it at most hardware stores in the welding stock.
|
|