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  • Users: falcon4
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  1. falcon4

    unfold / flatten sheet metal tube

    I have a sheet metal tube with a circular cut on one end. such as if you inserted a 3" tube into a 6" tube at an angle of 30 degrees. Off the axis of the 6" pipe. so now the 3" pipe has a cut that follows the profile of the 6" pipe. A typical y intersection. I now want to take that 3" pipe and...
  2. falcon4

    helium leak rate based on 5% helium fill

    I'm trying to develop a Mass spec leak rate for a high pressure valve. (3000-3200 psig) We are allowed a mass loss rate of 0.0015 grams/hr. (nitrogen) I would like to convert that to scc/sec nitrogen and then to scc/sec Helium leak rates. Once that is accomplished I need to develope a...
  3. falcon4

    Passivate before or after lap

    We are having a discussions as whether it is better to passivate before or after performing final Lap / Polish of a metal seat. Material 300 series CRES, min 8 finish. we perform the lap in house but the part is machined and passivated prior to our reciept. Is there any spec that stipulates...
  4. falcon4

    soil compressive strength

    Does anyone have a simple process to test compressive strength of soils in the bottom of a post hole, dug for an attached deck. Building codes are dictating a 20" minimum hole size unless comrpessive stregth of the soil is determined. Thanks Gary
  5. falcon4

    ceramic insulator material

    I'm looking for a suggestion for a ceramic insulating plate. I'll be using the plate on a 3" x 60" aluminum plate heated internally by an element to about 500F. the plate will be about 1" thick. along the lower 1" of this plate's face I'd like to attach a 1" x 60" long strip of ceramic plate. My...
  6. falcon4

    Insulation Res. and Dielectric test parameter reduction

    We have solenoids that we purchase from a manufacturer. They perform Insulation resistance and Dielectric testing IAW a define test procedure. We then send the assembly out into the world for use. We occasionally receive the product back from various airlines to be retested and recertified for...
  7. falcon4

    valve ball surface finish

    I am trying to update our ball-valve ball specifications. I need to provides specifications for a 1.0" dia ball made of 316 SS. We currently called out 100v (valve grade balls) but there does not seem to be a specification for valve grade balls. We require a 3 Rma surface finish, with a...
  8. falcon4

    creating custom sheet formats

    Am I missing something? Is there an easy way to create a custom sheet format with out modifying and saving the out of the box examples provided? I'm hoping to just open an existing Acad dwg Title block, and save it after conversion as a slddrt file. Thoughts? Falcon4
  9. falcon4

    stainless valve balls

    I am currently looking for suggestions for a Ball-valve, ball supplier. We have current suppliers with poor quality ratings. We currently procure .50 DIA and 1.00 DIA valve balls machined to various geometries. (Leave ITC out of your suggestions) Thanks Gary
  10. falcon4

    Physical properties differences of machined vs molded

    We currently have valve seats machined from extruded Nylon 6/6 rod. We are investigating the possibility of having these molded. Our concern is the change of physical properties that may occur. Does anyone have information on this subject. Thanks, Gary
  11. falcon4

    Can external threads be represented

    Can external threads (e.g. threaded end of a shaft) be added as part of the model, like adding threaded holes?
  12. falcon4

    insert and orient axis relative to x,y,z

    Is it possible to insert and orient an axis or user coordinte system with angles relative to the initial x,y,z axis? I have a part machining axis that is set relative to X,Y,Z. But I cannot figure out how to specify these relations.

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