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Recent content by BAMTech

  1. BAMTech

    4140 Alternatives?

    The material on the drawing calls out for 4140 or equivalent with the min yield and max tension. We're quoting a cheaper alternative for it, being told from the customer that the material part was over engineered. We have found that the part can be made out of 303 cold drawn steel, meeting the...
  2. BAMTech

    4140 Alternatives?

    Good Afternoon/morning, I am looking for an alternative to 4140 normalized and tempered steel. The customer is looking for material, steel and non-steel, that has a minimum yield strength of 60,000 psi and a max tensile strength of 240,000 psi. So far we've found a few alternative materials but...
  3. BAMTech

    Determining Capacity in a manufacturing "cell"

    I've recently been tasked to help understand our true capacitance of our moly-manufacturing cell. This consists of a few horizontal and vertical CNC machines. I'm relatively new dipping my toes in the role as Manufacturing Engineer, besides logging setup times and run rates per piece and per...
  4. BAMTech

    Vacuum Conductanse Analysis

    Note: the vacuum is applied to the open end of the capped tube and the capped perpendicular tubes is where we attach our substrates.
  5. BAMTech

    Vacuum Conductanse Analysis

    Hello, I've been tasked to compare the vacuum conductance of a new design vs an old system. The old system is a 10 ft long capped pipe(6 in ID) with three 12 in long/1 in ID pipes drilled in perpendicular. The first pipe is 1 ft away from the open end, and the remaining pipes are at a distance...
  6. BAMTech

    Alumina Alternative

    We've actually were able to use Moly alloys in that type of environment, and though its not cheap, they were able to handle the high temperatures. We realize that this a "fast, neat, and cheap; choose two" situation, if we're able to find something that encompasses all the properties we're...
  7. BAMTech

    Alumina Alternative

    Forgot to mention that in the Orignal Post. We have looked at silicon carbide but the material means we'd require on too many outside sources for tooling and machining.
  8. BAMTech

    Alumina Alternative

    Hello, I am currently looking for a material that has similar properties to Alumina. In the past we've looked at alternatives Albemet 162, 6061 Aluminum, 303 SST, AlSic, Titantium, 99% Alumina, Moly alloys, and T-Con. Looking at something that has high stiffness, stronger than, or as strong...
  9. BAMTech

    1020 Steel alternative

    VCI paper is something that we haven't looked at. and might be a viable option. Replacing the WD-40 with a rust inhibitor still adds the step of removing the inhibitor before coating. I heard good things about Fluid Film but I'm not familiar with how difficult it would be to remove completely...
  10. BAMTech

    Flatness "Jig"

    The problem with anodization and Teflon coating is that its a harsh process and doesn't give much leeway to be gentle and delicate with the parts. Toss in the electrical arc affecting the surface tensions of the thin materials to buckle and move, you tend to lose some where between .010-.015...
  11. BAMTech

    1020 Steel alternative

    Our current customer has a part that's made out of 1020 Steel. We're having oxidation issues with the part. The part is shipped off for some outside machining, where the job shop soaks them in WD-40. After this the parts are then shipped off to be nickel plated. The plater has stated that the...
  12. BAMTech

    Flatness "Jig"

    The parts are milled and thoroughly inspected in house before they are are shipped off to be coated/anodized. We do get them within +/-.001" for flatness prior to shipping, however they regularly are returned out of spec do to the heat of the coating process. We'd love to do the coating in house...
  13. BAMTech

    Impact of Uniform Finishing Policies

    Our company has several different customers that require their parts to cleaned and "polished" to differing degrees. 95% of our orders have only 5 different types of finishing requests. We use jitterbugging and scotch-brite pads to achieve the proper finish, and depending on the customer...
  14. BAMTech

    Flatness "Jig"

    Hello, I currently work for a company that makes products out of moly alloys, aluminum and stainless steel. These products are about 1 mm to 4 mm thick and 100mm to 300 mm in width. These products are sent out to be anodized or coated for some sort of protection. When the parts are sent back we...

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