Attached are some pictures of the cast iron oven door that I welded over Memorial Day weekend for a bicycling friend of mine. The process I used was modified from the process on the Lock and Stitch web site:
-Disassembled the door.
(Had fun removing screws that had gone through thermal cycling for 85 years.)
-Preheated the door and some large 1” thick blocks of steel in my oven @550°F
(The door was only 1/8” thick so the heavy blocks helped to stabilize the temperature.
-My assistant brought it up to and maintained it at 660°F with an oxy/acetylene torch with a large rosebud tip, while I TIG welded it with a 99% Ni rod.
(I would have liked to hold it at 1000°F but I found that the porcelain enamel got discolored above this temp.)
-After welding we put a second preheated block of steel inside the door and covered it with refractive blankets to let it cool down slowly.
- After it cooled down overnight the oven door was re-assembled.
I also included a link to some history regarding the Detroit Stove Works. This type of stove was built between 1918 and 1930 in Detroit. The Detroit Stove Works was the largest employer in Detroit and could make ~ 87 stoves of this type per day. I noticed an ancient 85 year old repair weld of the inner casting that was on the side you couldn’t see after the door was assembled. My bicycling friend has had it in her kitchen for the past 40 years. It is designed to work with either coal or gas. My friend still uses the gas cook top every day.
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06-03-2009, 09:04 PM #1Senior Member
- Join Date
- May 2008
- Troy, MI
Repairing Antique Cast Iron Oven Door
Smith Oxyacetylene Torch
Miller Dynasty 200DX
Lincoln SP-250 MIG Welder
Clausing/Coldchester 15" Lathe
16" DuAll Saw
15" Drill Press
7" x 9" Swivel Head Horizontal Band Saw
20 Ton Arbor Press
Miller Spectrum 375 Plasma Torch
06-03-2009, 09:21 PM #2
Great friends Makes for Cast Welding
Hey there Don. I think you did a great job. And you took every precaution that was needed to weld cast. I hope you friend knows that your a great one for doing this for him..Take Care...Bob