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  1. Gonzalito

    Zinc plated threaded inserts on stainless steel - Experiences anyone?

    Hello everyone! So as the title suggests.. Has anyone had any experience on placing zinc plated threaded inserts on 304 SS steel? What were the results? did they last? and how were they used and on what? Any experience will be helpful. I'm wondering to use them on dairy farm machines. So...
  2. Gonzalito

    Pump design - Plastic injection - Design advice

    Thanks everyone. In regards to this, we have advanced in conversations with an injection molding company and we have agreed that in should advance in the overall design and present it to them so they can give us a better insight regarding the injection capabilities. In terms o materials they...
  3. Gonzalito

    Pump design - Plastic injection - Design advice

    That's really interesting btrueblood.. The machine that uses this pump also receives cleaning treatments as you mention. They are short timed, but specified as you say. Daily an alkaline solution is used for fat deposits removal, an every three days or so, an acid solution. Each cleaning...
  4. Gonzalito

    Pump design - Plastic injection - Design advice

    Polypropylene would be a good material, at least in the chemical resistance regard. Solutions are alkaline first followed by acid when cleaning the machine and contact time is also short. In terms of mechanical resistance and rigidity I think it would also be well suited since the pump has low...
  5. Gonzalito

    Pump design - Plastic injection - Design advice

    Well, this is not a final design. I need to replace the 3d printed parts for more "industrial" grade materials and so improve durability over time.
  6. Gonzalito

    Pump design - Plastic injection - Design advice

    Hello everyone. My name is Gonzalo, I'm from Argentina, and I have to design a centrifugal pump for a machine of ours. I've already tested the main geometry by 3d printing the parts and it is all working perfectly. Flow, pressure and current draw are perfect. Now, the real deal is to move up...
  7. Gonzalito

    Design modification

    This is all stainless steel. Guess I'll have to go with bolting, or riveting. Making little tabs to bend om the arms and bolt into the main body of the lid was one of my ideas, but I was anyway trying to get second thoughts. Dont have a spot welder that powerful around (2mm thick SS steel).
  8. Gonzalito

    Design modification

    So I come here in hopes of finding a better way a lid like this. Overall manufacturing of the lid has been successful and we haven't had any major problems. But with the last batch, some have bent because of the welding stresses, and they cannot be restored to the final shape. I'll try...

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