Two Easyheat 10 kW induction heating systems from Ambrell
Thread rolling involves using a thread roll die to form a thread into a heated fastener. A fastener supplier to the aerospace industry ordered two induction heating systems for a thread rolling application.

Two Easyheat 10 kW induction heating systems from Ambrell will be used for thread rolling to manufacture fasteners for the aerospace industry.

The application involves rolling an array of materials, including Inconel, Hastealloy and titanium. The outer diameter of the rods is up to 1.2" (30 mm) and the length is up to 2" (51 mm). Part sizes can vary, so the solution needed to account for that fact. Depending on the material, the parts need to heat up to 482°C (900°F).

Thread rolling involves using a thread roll die to form a thread into a heated fastener. It offers advantages over thread cutting because the lack cutting reduces material waste and stress to the fastener. Often, a channel-style coil is used and the parts move from the coil directly to the thread rolling die, which maximizes the production rate.

Ambrell says the aerospace supplier selected the Scottsville, N.Y.-based heating equipment maker for several reasons, including its history of successful installations in the fastener industry. Ambrell included its eVIEW temperature monitoring and datalogging software that allows the aerospace fastener supplier to meet industry specifications.

Induction heating offers rapid, precise, noncontact heating: Only the portion of the fastener that requires heating is heated. Additionally, the footprint requirement is minimal as remote workheads can be placed a distance from the power supply.