Omnidex Mining has been providing shell casting solutions to the mining sector for many years. As with all other casting options we provide, we closely monitor and manage all material specifications, dimensional accuracy and tolerances throughout the process. We also use powerful simulation software to ensure every casting operation runs as smoothly as possible.
Shell Casting is a process characterized by the use of temporary shell molds made with a resin covered fine sand. The process offers superior dimensional accuracy across a wide range of ferrous and non-ferrous alloys.
The process of Shell Molding:
The metal pattern is heated to between 175°C (350°F) and 370°C (700°F). (The pattern can be used many times to form multiple shell molds.)
Fine sand mixed with a thermosetting resin is poured over the hot pattern to form the mold.
The pattern and sand are inverted to remove excess sand, leaving a shell mold.
The shell is further heated in an oven to harden and then removed from the pattern.
Two or more shells are combined to form a mold.
The shell mold is placed inside a flask, and surrounded with shot, sand, or gravel for metal pouring.
This process has a number of advantages:
These advantages make Shell Molding the ideal solution for large-scale production of small to medium-sized high-precision parts. It is often used in the manufacture of oil and gas components, camshafts, crankshafts, gear housings and many more.
It should be reminded that Shell Casting also has its own disadvantages and limitations:
Contact us to learn more about shell casting and other metal casting process we offer. You can also learn more about Omnidex Mining and our manufacturing processes on this website.