Large cast iron castings mean the casting parts with unit weight higher than 500 kgs or larger than 1 meter. Because large iron castings have more weight, so will require sand molds to have higher strength. Therefore, most of iron foundries will produce them by resin sand casting process.
Since the resin sand mold is a type of hard mold, so this process could produce iron castings with unit weight max. 2 tons, and could guarantee the large castings to have the following characters:
1. Better surface quality, the rough surfaces will be better than green sand castings.
2. Less casting defects, such as sand inclusion, air holes, shrinkage, drop sand, sand wash etc.
3. Higher rough casting dimensional tolerance grade, normally could reach ISO 8062 CT10.
The followings are some large iron castings produced by our foundry in
These cast iron plates have unit weight from 200 kgs to 500 kgs. Their dimensions are from
These large belt pulleys have been exported to
Our foundry does not have minimum order quantity limitation, so even our clients just demand several pieces of large castings, we also like to produce. The following large bracket and capstan head were exported to
We also produced many large alloy cast iron castings for boiler manufacturers. These ash collector tubes were also produced by resin sand casting process. Their wall thickness is only
Moreover, our iron foundry is also producing various large cast iron crane balls and ductile iron manhole covers for our client in