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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

  • We do not provide details of manufacturers' equipment, software or any other issues.
    Read More...
    kunena.post 21 hours ago
  • The major wire drawing machine manufacturers have programs to calculate tensiles and die sequences.

    Also a die manufacturer ( Paramount die) have a program for sale which covers all your questions.

    In the case of the example ,

    With inlet rod of 1123 Mpa ( 145,000psi) the final tensile on a .086" wire will be (+,-) 245,000 psi
    Read More...
    kunena.post 7 days ago
  • Peter J Stewart-Hay replied to the topic 'drawing lineup' in the forum.
    Again,the Normal Ferrous Moderator is still unable to Login to this thread. Here is his, (Eduardo's) response:

    .. The drawing operation in two drawing passes at a very low speed (450FPM) should not give any problem
    on die life and residuals.

    Things to look at:

    1.-Inlet Rod.-
    a) Normal good surface quality
    b) Normal scale content
    c) Normal diameter tolerances

    2.- Mechanical descaler
    a) Be sure to keep the brushes clean and free of excessive scale
    b) Check the descaler performance .- as the wire leaves the descaler , place a clean cloth on the wire it should not show a black mark

    3.- Drawing Machine
    a) Keep the drawing machine clean , free of dirt or lubricant soap

    4.- Lubricants
    a) Normal drawing lubricants ( stereates)
    b) Keep the lubricant clean and free of residual scale
    c) If there is scale content in the lubricant, replace the lubricant

    I mention normal because the type of operation as it is mentioned, does not require any special requirements
    Read More...
    kunena.post 10 days ago
  • Peter J Stewart-Hay replied to the topic 'drawing lineup' in the forum.
    The Normal Ferrous Moderator is presently unable to Login to this thread. Here is his, (Eduardo's) response:

    …We do not understand the need to use a lubricant with borax unless after the drawing processes the rod requires borax

    The presence of borax can be part of the problem.

    From the drawing point of view you can use a normal sodium stearate lubricant from any of the wire drawing lubricant manufactures

    Please your comments
    Read More...
    kunena.post 13 days ago
  • Peter J Stewart-Hay replied to the topic 'drawing lineup' in the forum.
    Hello Richard,

    Would you please advise us of the following:

    - Inlet size
    - Finish size
    - Number of passes
    - Die diameters
    - Details of the descaler

    Thank you.
    Read More...
    kunena.post 16 days ago
  • Peter J Stewart-Hay replied to the topic 'copper alloys 90% zinc 10 % hot rolling' in the forum.
    Hello,

    This is a wire and cable Forum. it is not a metallurgical forum for hot rolling bronze. While your problem is quite interesting, we doubt that you will get many, if any, appropriate technical replies.

    It would seem to me that forming roller is not properly heated and is removing surface heat from the slabs before or during the rolling process. It is also possible that the forming roller is flexing and working the bronze during the rolling process.
    Read More...
    kunena.post 20 days ago
  • kunena.thankyou 54 days ago