1 Attachment(s)
Best manufacturing method for this part?
Hi folks,
I would like your advice on the what process(es) to use to manufacture the attached part. Attached is a 3D pdf file (open in Adobe 7 or later to spin the model around). We can either manufacture as one part (eg via investment casting) or split it into the two bodies and produce them separately. Click anywhere on the part to see the proposed split line which would enable a 2-piece tool to produce the bottom part. Draft and fillets have not been applied for modeling simplicity although we cannot have draft along the length of the internal walls.
[B]Quantities:[/B]
year 1: ~5000
year 5: ~500000
[B]Material:[/B]
Both parts have wear surfaces so we require hardness > Rc 50. At this stage, we're looking at 4340 steel although if we can achieve that hardness with SS, then that would be our preference for corrosion resistance.
[U]So far we have considered:[/U]
[B]Investment (lost wax) casting:[/B] Could manufacture as 1 complex part without draft along the length. Could also split and manufacture as two separate parts in order to simplify the tooling. This process involves a lot of manual work so we're concerned about how it will lend itself to large-scale production.
[B]Die casting:[/B] Despite reading in several places that high carbon steel could be cold-chamber die-cast, I have had no manufacturers indicate they could make these parts. It seems they all limit die-casting to aluminium, zinc and magnesium. Can any speak to this?
[B]Metal injection molding: [/B]The part is at the upper end of the size for this process, not an economical process for large scale production.
Thanks team! Look forward to hearing your ideas.
Cheers,
Daniel