A WEHNELT ELECTRON GUN ELECTRODE

In support of a R&D project for our Oregon based customer, Kroll Technologies LLC was tasked with machining this Wehnelt electrode in prototype quantities. Our customer supplied 2D CAD drawings and 3D models of this component. As is done for all part projects, Kroll Technologies’ Engineering team performed a comprehensive design review to ensure manufacturability as well as a complete quality plan by QA.
Kroll Technologies started with DFARS compliant, .500" diameter, 316 Stainless Steel per AMS-QQ-S-763, ASTM A276 which is inventoried on site along with a wide variety of raw materials.
The complexity of this piece required us to machine the electrodes on a 7 axis Swiss-type CNC Automatic Lathe that offered the ability to turn, drill 1mm holes into the side of the part, as well as off-center drilling & helical thread milling of a miniature M1 x .25-6G thread into the face of the piece to drop them complete in one operation.
After the parts were machined, they were degreased and cleaned using an automated ultrasonic cleaning system. Final part dimensions were .2992" (7.6mm) in length with a diameter of .433" (11mm). 100% dimensional inspections were performed using a micrometer, pin gages, thread plug gages, optical comparator and one of our Keyence IM-6020 vision measurement systems. To measure internal angles, radii and other geometry, a precise cross section of the piece was made available.
Following inspection, the parts were passivated using citric acid per the ASTM-A-967 and AMS 2700 standards and packaged for shipment.
To learn more about this project, or the processes used to manufacture it, see the table below, or contact directly.