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Peter J Stewart-Hay

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Peter J Stewart-Hay

14
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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

  • Peter J Stewart-Hay replied to the topic 'Stainless Steel Wire Drawing' in the forum.
    Hi David,

    While I am not a specialist in ferrous wire processes, I see from your posting that there are common issues regardless of the machine the stainless wire is drawn on.

    Here are some thoughts with reference to your post:

    1) Non-Uniform Stainless Steel Properties:
    - For some reason, there must be random and somewhat harder or softer spots in the wire before drawing and the die block is pulling but not breaking the wire after drawing. The result is low diameter in some areas and even out-of-round spots in other areas. In the case of the out-of-round spots, make sure the weight of the malformed wire is identical to the weight of the properly drawn wire. (Likewise make sure there was no slippage on the capstan.) Moreover take samples of the stainless steel wire immediately prior to the drawing failure and ensure the metallurgical properties are identical to the specification and the balance of the wire on the pay off.. Make sure there was no scuffing of the wire at the capstan.and make sure there is bo build-up inside the die. You should be able to see that after the machine is stopped.

    2) Non-Uniform Processes at Your Plant
    - A low diameter wire is often the result of wire stretching after or during wire drawing. This could be the result of higher tensile strength in the wire before drawing or non-uniform (poor lubrication) in the die during drawing. You may want to perform an experiment with a reduced or lower reduction die angle at the spot where you are having the worst problems to ensure the lubricant is properly getting into the die.

    3) Laser Diameter Monitor
    - Presumably you never have a drawn wire break so you need a two plane continuously run to measure the dimensions of the drawn wire. An alarm will then sound when some out of specification wire is measured and the machine can be stopped. Make sure there is bo build-up inside the die. You should be able to see that after the machine is stopped and the die removed for inspection. Likewise take samples of the stainless steel wire immediately prior to the drawing failure and ensure that the metallurgical properties are identical to the specification and to the balance of the wire on the pay off.
    Read More...
    kunena.post 28 minutes ago
  • Danfoss A/S is an electric motor control company and they purchased VACON in about 2015. They are not well known or used in the wire and cable industry. See:

    drives.danfoss.com/products/vacon/#/

    The ring marker itself perhaps came from some other ring marking company. If this is true, you may have purchased the wrong ring marker and it may have been sold to you under false pretenses.. If so, our immediate recommendation would be to return your marker for a full refund.
    Read More...
    kunena.post 44 days ago
  • Hello Again Christopher,

    AS I recall, the best band marking machines were from Medek & Schörner ( www.medek.at/en/ ) in Austria. Is the Model
    RS 70 the machine you purchased?
    Read More...
    kunena.post 49 days ago
  • Peter J Stewart-Hay replied to the topic 'Copper wire drawing air quality' in the forum.
    Hello Mr. Kumar.K Senthil,

    The first thing we recommend is that you purchase the Nonferrous Wire Handbook Volume 3 from the WAI store:

    portal.wirenet.org/eweb/DynamicPage.aspx...DA-90A3-CDFBA601F1EE

    and the Nonferrous Wiredrawing Coolants Booklet from the WAI Store and start reading.


    portal.wirenet.org/eweb/DynamicPage.aspx...20-9CCC-ABFDE6B395F7

    Moreover we recommend you contact your wire drawing lubricant supplier/ manufacturer and obtain all the technical information you can obtain.
    Read More...
    kunena.post 58 days ago
  • Peter J Stewart-Hay replied to the topic 'Frequent wire breaks' in the forum.
    Hello Mr. Suman Roy,

    Sometimes, when you are running your machine very slow, you get chattering on the capstans inside the machine. If this is happening, there is indeed the opportunity for inclusion type wire breaks due wire shock and reduced cross-section area by virtue of the inclusions.
    Read More...
    kunena.post 58 days ago
  • Hello Mr Suman Roy,

    You have a measurement issue that is really difficult to solve.

    SINCERELY,
    Read More...
    kunena.post 58 days ago
  • Peter J Stewart-Hay replied to the topic 'Copper wire drawing air quality' in the forum.
    Thank you for your fast and prompt reply .It would be very much helpful if you please help me another suggestion on same query .
    Our motto is to produce best quality PVC Insulated Copper wire .
    Please suggest how to maintain and keep good quality copper drawing what kind of safety measure to taken ,Likewise ambient temperature ,humidity of environment ,moisture ,atmospheric air condition .,exposure of lighting and water quality .

    Early action highly appreciated.

    Awaiting for your reply ,

    Thank you for your time .

    Thanks & Regards

    SenthilKumar.K

    BALARMARKETING (P)LTD.,
    F-8 RIICO INDUSTRIAL AREA PHASE -1 ,
    BHIWADI-301019
    DISTT.ALWAR RAJASTHAN INDIA

    Web:kundancab.in
    Read More...
    kunena.post 58 days ago