Chilled Cast Iron Billets

Chilled cast iron outperforms traditional induction-hardened cast iron billets typically found in the U.S.  Cast iron cams are typically used for flat tappet applications whereas steel cams are used for roller follower applications.

In this process, surface hardening of the cams is obtained by locating metal chills in the mold.  These chills act as quenches which remove heat rapidly.  The rapid cooling makes the material near the chill much harder than the surrounding material without the chill.  The hardening depth goes much beyond any other process.  Other types of hardening only produce a thin "scab" hardness with very soft metal underneath.

These billets have been used extensively in Europe and Japan for OEM stock and racing applications for many years.