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Peter J Stewart-Hay

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Peter J Stewart-Hay

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About Me

Personal Information

Gender
Male
About me
A university trained Professional Mechanical Engineer, registered in the Province of Ontario, Canada.

A wire and cable manufacturing engineering specialist with over 35 years hands on experience.

Company Information

Company
Stewart-Hay Associates
Address
Unit 51, 1814 Shore Road
London, Ontario Canada
N6K 0C6
City / Town
London
State
Ontario
Country
Canada
Land phone
519 6413212
Website
http://www.Stewart-Hay.com

Background

College / University
U of M
Graduation Year
1968
Degree/Certifications
B Sc. M.E.
Skills and Expertise
A university trained Professional Mechanical Engineer, registered in the Province of Ontario, Canada.

A wire and cable manufacturing engineering specialist with over 35 years hands on experience.

Recent activities

  • kunena.thankyou 14 days ago
  • Peter J Stewart-Hay replied to the topic 'Wire Buncher Troubleshooting' in the forum.
    Hi There Ms Willson,

    Lets go over some of the basics first:

    1) If the pay-offs for the single wires on the strander are not driven, then the pay-off brakes create a torque and, as the pay-off reels go down, the individual wire tensions go up. This is all very normal but all the individual wires must have the same metallurgical composition and properties. That includes elongation. There can be no mixtures of hard and annealed wires in the same seven wire strand. Measure each of the wire tensions so that all are typically the same or quite similar.

    2) Make sure all the pay-off reels are in good shape, balanced and ready to be used properly.

    3) Make sure that the seven wire pay-off reels typically have the same amount of wire on each of them so that the individual wires twist properly when they close at the buncher.

    4) It is important that each of the pay-off pintles are completely free turning and that the wires are properly wound on the pay-off reels. Turn each empty pay-off pintle carefully by hand to ensure there are no hang-ups or other strange intermittent torque effects. Have maintenance repair those pintles that are below standard and recheck by hand.

    5) Make sure that the wire path to the buncher closing point is smooth and free of spots where the wires could hang up.

    6) Make sure that the 7 wire bunched strand has a smooth and free wire path through the buncher and on to the take-up. Everything counts!

    Now you are ready to run a trial on your 7 wire bunched strander.
    Read More...
    kunena.post 15 days ago
  • Peter J Stewart-Hay replied to the topic 'Conversion of a machine' in the forum.
    Hello Bhognath,

    It is impractical to convert a single twist buncher to a double twist buncher. That's all I have to say.

    Best regards,
    Read More...
    kunena.post 34 days ago
  • I read the information you provided. While it is true, it is always important to keep items as simple as possible which is what I have done.

    Best regards,
    Read More...
    kunena.post 41 days ago
  • Compact Stranding is a stranding configuration with concentric strands or wires in each layer are passed through a compacting die after closing to reduce the diameter by approximately 10%. The stranded conductor is drawn at each stranded layer (Not the king wire or center wire!) so as to fill the normal interstitial spaces between the wires in each stranded layer. It requires experimentation to ensure you are not breaking wires and that you are indeed manufacturing a compact strand. The compact drawing die (s) gets really hot so some manufacturers use air cooling or a water cooling jacket around each compaction die.

    This is all you really need to know.

    Best regards.
    Read More...
    kunena.post 42 days ago
  • Dear Mr. Bogahawatte:

    The minimum bending radius of a cable depends on the :

    The Overall Diameter
    The Materials
    The Construction of the Core
    The Firmness of the Core.
    The Thickness of the Sheath
    The Environment in which the cable is installed in

    Often, the cable manufacturer has no idea of where the cable is going to end up so standards are written so that the cable conforms with those published standards. Buy the cable standards appropriate to your country or the many countries you are selling your products in and design and test your cables appropriately.
    Read More...
    kunena.post 97 days ago
  • kunena.thankyou 201 days ago