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Date: Sun, 31 Jul 2011 05:03:45 +0000
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Subject: [MW:11995] Digest for materials-welding@googlegroups.com - 6 Messages in 4 Topics
Group: http://groups.google.com/group/materials-welding/topics
- To calculate welding penetration [2 Updates]
- How to prepare WPS and PQR [2 Updates]
- [MW:11988] Regarding plate welding of unlimited thickness [1 Update]
- relation between preheat or post heating to tensile strength [1 Update]
- 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.
Topic: How to prepare WPS and PQR
- 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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