biggest casting you never heard of
Yesterday I visited the Arizona Mining and Mineral Museum, in Phoenix. Outside the building there is the bucket from a shovel used at the copper mine in Ray, Arizona. The plaque said that this bucket is a single casting, weighing 100,000 pounds. To keep pace with the increased size of the ore trucks, it was replaced by a larger bucket several years ago. The new bucket was made from welded steel plates.
It must have been a major undertaking, transporting this casting to the museum, and unloading it.
Is this 50-ton hunk the largest casting you have ever heard of?
Back in 1864, there was one 20" Rodman cannon cast. The four piece mold took 160,000" of iron to cast. The cannon was machined on a special lathe and final weight was 116,479#.
More details here;
There were also three 20" Dahlgrens made in the same era, but they ended up less than 100,000"|# each.
Okay, but these are cast ingots. Casting a desired final shape, like the shovel bucket (which has teeth on the leading edge) is an effort of a different sort. The bucket opening was about twelve feet square. If it was a sand casting, making the mold must have used a lot of wood in the pattern.
Originally Posted by Elninio