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Re: [MW:12011] Digest for materials-welding@googlegroups.com - 6 Messagesin 4 Topics

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From: materials-welding+noreply@googlegroups.com
Sender: materials-welding@googlegroups.com
Date: Sun, 31 Jul 2011 05:03:45 +0000
To: Digest Recipients<materials-welding+digest@googlegroups.com>
ReplyTo: materials-welding@googlegroups.com
Subject: [MW:11995] Digest for materials-welding@googlegroups.com - 6 Messages in 4 Topics

Group: http://groups.google.com/group/materials-welding/topics

    ashish yadav <yadavashish018@gmail.com> Jul 30 11:55AM +0530 ^
     
    Hello experts
     
    I have two questions:-
    1. How to calculate penetration and upper and lower weld width in laser
    welding analytically (not by experiment), if you know the beam power, focal
    position, spot diameter at focal position and focal length.
    2.In experiment of laser welding i seen that if i am focusing the laser beam
    inside the material it is giving me less penetration rather than focusing
    well above the material. How can it be justified?
     
    waiting for your valuable suggestions.
     
    --
    Regards
    Ashish Yadav
    Institute for plasma research

     

    Harish Kannepalli <harishkannepalli@gmail.com> Jul 30 08:23PM +0400 ^
     
    Please refer W.M. Steen-Laser Processing of Materials
     
    2011/7/30 ashish yadav <yadavashish018@gmail.com>
     
     
    --
    regards,
    Harish.

     

    tahir alam <tahiralam007@gmail.com> Jul 30 08:35AM +0300 ^
     
    Hello
    Can anybody help me to prepare WPS and PQR of CS plate of thickness 6.3mm
    and process is SMAW...........pls anybody help me ,

     

    Dinesh Somwanshi <som.din@gmail.com> Jul 30 10:24AM +0300 ^
     
    can you tell me you will qualify your wps as per code?
    aws d1-1 or asme 9
     
     

     

    kalyan vvv <vvvkalli@gmail.com> Jul 30 11:05AM +0530 ^
     
    Dear abdul,
    if the welder qualifies in 6G position to maximum thickness
    (more than 13mm). that welder is qualified in 4G position on plate also upto
    maximum thickness.
     
     
    --
    *THANKS & REGARDS*
    * *
    *KALYAN VVV*
    *WELDING ENGINEER *
    *HYDERABAD
    **Mob.NO- 09885273257*

     

    kalyan vvv <vvvkalli@gmail.com> Jul 30 11:00AM +0530 ^
     
    Dear experts,
    Please solve my doubts
    Could u please explain
    1) Is their any relation between Preheating/ Post
    heating/interpass temp to Tensile strength?
    2) metallurgically what will happen when bead width and
    bead thickness increases in SAW process? Is this any effect to tensile
    strength?
     
     
     
    --
    *THANKS & REGARDS*
    * *
    *KALYAN VVV*
    *WELDING ENGINEER *
    *HYDERABAD
    **Mob.NO- 09885273257*

     

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