The components we will weld are pretty small. The final product is 14x15x5 mm so we need small weld spots and minimal thermal inpact. We don't think there is another welding solution than laser, not for an automated process. Adding material is a big no no for this component. Keeping the mass...
We will use maximum 8 spots on a Ø11 cylinder in a hole with H9 fitting.
We have not tried pure copper because it is difficult. The laser pulse can be shaped to penetrate and give a proper melt of the copper but it's a too unsure solution to go through with.
The materials we've tried so far...
Yes, nickel would work if we didn't have to consider the manufacturing. Monel and inconell alloys welds have been satisfying. Although mMachining of nickel and alloys with high nickel content is difficult because of the fact that is hardens a lot by deformation.
I have trouble finding a material that fulfills my requirements list.
Density >8,8 g/cm³
Relative magnetic pearmability <1,02
Weldable to soft iron, using laser spot welding.
Machinability >70% compared to UNS C36000 (free-cutting brass)
Availible on rod Ø20 or bar 15x15 [mm]
Thankful for any...
