Shape setting of nitinol is one element of the complete nitinol product manufacturing package at Norman Noble, Inc. It is an important function in the manufacturing process, but one that is not widely available.

We are one of the few companies that offer Nitinol shape setting. But, we are the only contract manufacturer to provide all elements of nitinol manufacturing: micro machining Nitinol, shaping Nitinol and electropolishing Nitinol.

The Shape Setting Process   One of the most important challenges in the shape setting process is determining the proper heat treatment parameters to achieve the shape and properties of the part. Nitinol shape setting requires thermal manipulation of the nickel-titanium from martensite to austenite. The process requires a specific austenite start temperature (As Temperature) and finish temperature (Af Temperature); and a specific martensite start temperature (Ms Temperature) and finish temperature (Mf Temperature).

The parameters for this phase transformation usually need to be determined experimentally for each part. Norman Noble’s expert technicians perform all research and development tasks prior to production to insure that all shape and use requirements are met.

To set shape nitinol, machined nitinol is constrained on a mandrel, or custom fixture. This mandrel can be made by Norman Noble or provided by the customer. Once the nitinol is fixed on the mandrel, its shape is set with a specific heat treat. Either Norman Noble or the customer can specify the type of heat treat used: fluidized bed, with Alumina media; convection air furnace; or salt bath furnace. Rapid cooling is then used to return the metal to its original form.

 

Requests for quotations can be emailed to the following address: sales@normannoble.net or visit our RFQ page.