I am working a project : To use BeCu wire to make an extension spring ( gasket ) for EMI shielding . I have asked the spring coil vendor to make the coil for me ( wire diameter is 0.19mm and to form coil diameter 1.0 mm with spring about 140 mm length ) I use BRUSHWELLMAN Alloy 25 with 3/4H , after coil forming , the springs were heat up 600 degree F for 1 hour . The out come is unexpected : The pitch of the coil extended to total length about 200 mm and discoloured .One of BRUSHWELLMAN engineer told me that it is the effect of stree relief .Please advise what were wrong ? The material spec ? The treatment temp and timing ? What will make the finished part with the original colour , with spring effect and not extended ? And what is the proper procedure to make BeCu extension spring ? Thanks
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so itâ€™s critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Download Now
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now