The Warpage of Annealed Molybdenum Strip after Cutting

After precision parts are cut from a strip or laser blanking, the most troublesome thing is edge warping and overall deformation. There is a large residual processing stress in the cold-rolled molybdenum strip. Once cut and the stress is released, the sheet will be slightly arched or twisted, and the subsequent assembly is not even, and the flatness is also affected. The annealed molybdenum strip is specially used to eliminate these internal stresses through high-temperature annealing, so that the material can be flatter after cutting.

The annealing process rearranges the grains, reducing the residual stress caused by cold rolling. As a result, when the strip is toughened, the deformation after cutting is obviously reduced. For parts that require laser cutting, precision blanking or subsequent multiple bending, this means fewer leveling processes and a more stable finished product size. Many factories that make electronic shields and small structural parts use the annealed state because of this point.

Of course, annealing will give some strength, and if the part is mainly supported by hardness without large deformation, the cold-rolled state may be better. The surface is usually cleaner after annealing, which is conducive to welding or plating, but care should also be taken to avoid bumping during storage. Communicate these details clearly before placing an order, which can save a lot of detours.

In actual use, after switching to the annealing state, the warping complaints of the cut parts are obvious, and the post-leveling time is also shortened. If the material state is selected correctly, the subsequent processing will be much easier.

If you are selecting molybdenum parts that require cutting or multiple molding, you can tell us the thickness, cutting, and flatness requirements. The annealed molybdenum strip can often directly improve the flatness and assembly efficiency of the finished product.