1. Cobalt Based Alloys

2. Resistance Welding Lesson Objectives When you finish this lesson you will understand: Learning Activities 1.View Slides; 2.Read Notes, 3.Listen to lecture 4.Do on-line workbook Keywords

3. Fe (9.7) AWS Welding Handbook

5. Sullivan, CP, Et. Al. Covalt-Base Superalloys – 1970Centre DInformation Du Cobalt, Brussels, 1970

8. Example: Cast MAR-M 302 MC M 23 C 6 M 6 C Eutectic

9. Applications First Stage Turbine Blades & Lower Temp Sheet applications such as exhaust case & Burner liners Medical Implants

10. Resistance Welding The resistance welding manual says: Cobalt alloys can be spot, seam and flash welding with conditions similar to that of Nickel. But they also say data is limited. RWMA concludes: current requirements will be no more than for SS, but slightly higher welding forces will be required. Welding time should also be about the same.

12. Manufacture of a Non-Migrating Vascular Prosthesis McNamara, E, & Weiser, M, Non-migrating Vascular Prosthesis and minimally invasive Placement System Therefore, US Patent 6,004,347 Dec 21, 1999 Blood Vessel Liner and Spring Made From MP35N Wire Compressed & Inserted In Artery Mesh & Anchor Hooks Resistance Welded Zig-Zag Wire Spring Placement in Artery