Friday Training – Removing Tooling Marks on Bent Inconel Tube
Friday training at Abrasive Finishing Systems included working on the Garboli LPC 300 tube processing machine. A customer had recently asked us to polish a selection of Inconel tubes from 25 to 51mm in diameter with a range of different bend formations. Luckily, the Garboli machine was perfect for the job.
Initially, the Garboli machine was fitted with the 220 grit JF4Top Aluminium Oxide belt. JF4top is a very flexible belt material and when used with a wave-cut edge JF4Top belt you can manoeuvre the work piece easily as you are passing it through the machine. Especially useful when working with tubes of different shapes and sizes as we were!
As you can see, the JF4T belt has done a really good job of removing tooling marks and material marks off the work piece to leave a consistent satin finish.
Our next stage included switching belts to the Surface Conditioning belt. This allows you to work deep into the bends of the work piece to reduce some of the deeper bending marks and other remaining surface damage.
Below is the difference before the tube had gone through the Garboli machine and after the two belts were used on the workpiece.
Hints and Tips:
- Work out how you will feed the tube through the machine before you do it for real! This is especially useful when you are working with an unusual shaped tube.
- Keep the heat down. Inconel really does not like being worked at high temperature.
- Set the Garboli machine to run at the right speed. Working on the Inconel tubes we set the machine at 22 m/s.