Re: Pressure Gauge conversion..Clarification.


<fargowest@xxxxxxxxxxxx> wrote in message
news:1138731693.575654.67190@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> When using the gauge, decide first what loading force you wish to
> employ and then work back to find the appropriate gauge reading for the
> size tooling you're employing.
>
> Example:
>
> For a cored 0.75" (ID) BP rocket you wish to load at (for example) 4500
> pounds, the gauge should read 1985.
>
> If your gauge reads 2866, you're pressing your 0.75" rocket at 6500
> lbs. of loading force.
> At 3880 on your gauge, you're loading at 8800 pounds of force.
>
> You will need to use a case reinforcing sleeve while loading tubes at
> these numbers; there's not a paper case in the world (from any
> manufacturer) that will withstand unaided these kinds of loading force.
>
> The idea to remember is that your gauge reading must be reconciled with
> the tooling size you're using. In general, the smaller the tooling
> size, the greater the loading force developed at a given gauge reading.

I press end-burners at about 2600 pounds per square inch ON THE POWDER. For
a 3/4" press rod, that works out to about 1150lb force.

As Fargo said above, you'll have to determine what GAUGE pressure results in
that amount of force on the rod. The force on the rod must change with rod
diameter by a factor proportional to the square of the radius. (the area of
the rod cross-section).

LLoyd


.

Relevant Pages

  • Re: Pressure Gauge conversion..Clarification.
    ... When using the gauge, decide first what loading force you wish to ... > I have been pressing Bp rockets to 2866 actual gauge pressure for BP ...
    (rec.pyrotechnics)
  • Re: Pressure Gauge conversion..Clarification.
    ... decide first what loading force you wish to ... >employ and then work back to find the appropriate gauge reading for the ... >> I have been pressing Bp rockets to 2866 actual gauge pressure for BP ...
    (rec.pyrotechnics)
  • Re: Bastard Powerbook From Hell
    ... gauge rod inserted backwards. ... project and therefore required clearances to go in and use them then. ... bad as LockHead handing JPL stuff in English units when JPL expected ...
    (alt.sysadmin.recovery)
  • Re: Rant: Addicted to 1/16 Rod!
    ... I bought a pack of 1/16" 6013 to play with and tried welding some 18 ... It is also a shallow penetrating rod which also helps to ... tends to concentrate the arc heat to the rod and minimizes the heat input ... never get a butt joint to work with 18 gauge. ...
    (sci.engr.joining.welding)