A Gray and Ductile Iron Jobbing Foundry, Since 1912
Heavy Industrial Castings up to 400 lbs.
A Gray and Ductile Iron Jobbing Foundry for General Industrial Castings in Short Runs and Serial Production
OK Foundry makes gray and ductile iron sand castings from 1 lb. to 400 lbs. using cope and drag phenolic urethane bonded sand molding also known as “no-bake”.
The no-bake molding line at OK Foundry is most efficient for short runs of 25, 50 or 100 castings of 50 to 250 lbs. in gray or ductile iron. No-bake molding has the least expensive tooling of any sand molding process and is a good process for heavy equipment castings like pumps, volutes, gear cases and heavy boiler grates.
Phenolic Urethane No-Bake (PUNB) Binder for Difficult Iron Foundry Castings
To support the widest range of casting sizes, shapes, and configurations, OK Foundry utilizes phenolic urethane binders for cope and drag molding. Phenolic Urethane No-Bake binders (PUNB) create the strongest molds and cores.
Cores made with PUNB binders have superior hot strength and PUNB cores in cold boxes are easily reinforced with steel rods to prevent core bending and breakage.
Cope and drag resin bonded sand molding supports the widest range of tooling and most green sand patterns or foundry patterns from other processes can be run in resin bonded sand. No-Bake molding is appropriate for volume production of heavy section, complex cored and large format castings and castings with green sand patterns in small volumes.