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Recent content by Mechotron

  1. Mechotron

    Angular Contact Bearing for Thrust Load

    Due to a design constraint I will be using a Angular Contact Bearing to calculate the thrust load using a load cell. The test setup is horizontal. Is there any method to determine the loss of thrust load when using a angular contact bearing to measure the thrust load. Please let me know if you...
  2. Mechotron

    API Standard For Testing Downhole Linear Pump

    Hi, I am trying to find a API specification that is available or a API specification that is likely to provide the testing requirement for a downhole linear pump. Please let me know if you need more information. Mechotron
  3. Mechotron

    Click Type Torque

    Hi All, I have a question regarding click type torque wrench. Our assembly shop utilises a click type torque wrench Which has a removal head. Beacuse of a design constraint we had to design a head. The head was longer than the standard heads. Does it affect the torque applied. We are supposed...
  4. Mechotron

    O-Ring Spec

    Hi, I am trying to find the most commonly used Quality specification for O-Rings relating to the oil industry. We supply downhole pressure containing equipments and work to API 5CT specification. Hoever i dont belive there is a specification for o-rings on that. But i did come across...
  5. Mechotron

    TIG Welding Heat Affected Zone

    Hi Metengr I have attached a rough schematic of the set up. If you have any queries, please let me know. http://files.engineering.com/getfile.aspx?folder=3cc08968-03c8-43a3-aca0-50fd4df37cdb&file=Heat_Affected_Zone.pdf
  6. Mechotron

    TIG Welding Heat Affected Zone

    I have a query regarding heat affected zone due to TIG welding. A 1.38" OD tube with a wall of 0.085" wall is TIG welded. There is a wire of 16AWG with the insulator running under the wall. I am trying to find out if the Heat from TIG welding will have a consequence on wire being snapped. Is...
  7. Mechotron

    Does Length of thread have an Impact on the Torque Applied

    One more question is Shear stress of a fastner 0.57% of yield or 40% of Yield.
  8. Mechotron

    Does Length of thread have an Impact on the Torque Applied

    Hi, Machinery's Handbook gives a formula for calculating the torque which is not relating to the length. I believe this assumes that there is minimum length of thread engagement available, which is calculated from the same machinery's handbook. I have a situation where i dont have the minimum...
  9. Mechotron

    Maximum Torque to Break a Thread

    Hi I am theoritically trying to the find the absolute, do not exceed torque. I want the thread material to go beyond its elastic limit and reach the ultimate clamping force which is in the plastic region. If you torque beyond this point the thread will elongate but the tension will drop and...
  10. Mechotron

    Maximum Torque to Break a Thread

    The link above is for calculating the torque within its elastic limit. But i happen to go beyond elastic limit and break it. Is there a formula for find the maximum torque (ie before the thread breaks) for threaded connections.
  11. Mechotron

    Maximum Torque to Break a Thread

    Hi, I have a threaded connection which has a direct tensile load to break the thread is 12,000 lbf. I am trying to find the torque that can supply this load to the thread to break it. The thread is 0.4375-20UNF. The load on thread and the torque load is perpendicular as you are aware of. can...
  12. Mechotron

    Radiography

    Hi All, I am working on a quality procedure for radiography (cast protectors). I have very less knowledge of radiography in relation to the oil industry. can i ask you what is standard that the oil industry use in terms of radiography and is there good online material that you can suggest for a...
  13. Mechotron

    Collapse Pressure Tank

    Hi, We are designing a electronic housing for a high pressure completion. As for the qualification purpose, we are trying to test its integrity to collapse. Does anybody know of a test facility which does collapse pressure testing (ie in a tank) at 125 deg c. in Aberdeen, UK Mechotron
  14. Mechotron

    Charpy V Notch Impact Test

    Hi, I have from API quoted a test requirement of 20J on the transverse direction on a 10mm x 10mm specimen for a V Notch impact test. The material supplier has done the test on the longitudinal direction and has obtained a value of 75J. Is there any means of converting this value to transverse...
  15. Mechotron

    Thread Orientation dimensioning

    Geometrical Dimensioning & Tolerencing??????? mechotron

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