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  • We do not provide details of manufacturers' equipment, software or any other issues.
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    kunena.post 1 day ago
  • I know these programs but I want to know the equations and constants on which these programs depend , Is it trial and error results or specific equations and constants ?
    Thanks
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    kunena.post 8 days ago
  • Mr richard webb, Peter J Stewart-Hay replied to the topic 'drawing lineup' in the forum.
    Thank you..
    Can you give me you opinion on the pressure dies? Is it better to have them tight to help melt the lube or really big? It seems to me that really big actually lets more pwder come thru that is overtaking the electrolyte? Am i wrong?
    We do suspect the rod is not actually being cleaned all the way with the mechanical descaling so the heavy lube is being used to help cover scale on the rod and make it drawable?
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    kunena.post 11 days ago
  • Dear all,
    Does anyone have a formula to predict the tensile strength of ferrous wire after drawing ?
    for example
    Input Diameter : 5.5 mm
    Material Grade AISI 1070 or 0.70 % C
    Final Diameter : 2.18 mm
    Total Reduction : 84.3 %
    Initial Tensile for the rod : 1123 MPa
    how to get the final Tensile ?

    Thanks
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    kunena.post 11 days ago
  • Mr richard webb replied to the topic 'drawing lineup' in the forum.
    Can you tell me what you mean by "the borax could be the problem" please and thank you..
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    kunena.post 13 days ago
  • Mr richard webb, Peter J Stewart-Hay replied to the topic 'drawing lineup' in the forum.
    It is a Sodium tetraborate lube. Any other lube tried scratches the dies. We have tried Graphite lube also and it was the same or worse. It is possible the descaling with wire brushes isnt getting it clean and the borax lube is all that will draw semi clean rod i guess? We have tried several calcium lubes also but the die life is short. Are the big pressure dies a no factor in the amount of residual?

    Thank you for helping
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    kunena.post 13 days ago
  • Mr richard webb replied to the topic 'drawing lineup' in the forum.
    It is a 9/32 1070 carbon. The firs die is a .239 and the second is a .206 with basically guide dies for pressure dies @.050 over.
    Its a wire brush descaler running 450fpm..the lube is a heavy duty lube with alot of borax..is it better to go bigger with the pressure dies or tighter so the lube will melt to a film instead of the powder that come thru? We have tried tighter pressure dies but it builds so much pressure in the paramount die holder the nibs have to be beaten out.
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    kunena.post 16 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 17 days ago