View Full Version : Oxy Acytelene Welding
hipposs
15-04-2008, 09:47 PM
Hello Guys,
I have a question concerning the selection of the oxy acytelene kit
I am using the above procedure for welding Copper pipes Type L according to ASTMB88-96 my problem is that I don't know which weding tip size should I select as my copper pipe diameter is 21/8'' and how should I select the tip.
could i use a double tip or one is enough?
If any body can provide me with a guide for the tip selection or even give me the selection or a supplier or anything concerning this issue I would be very grateful.
Thank you in advance and best regards
Chunk
15-04-2008, 10:26 PM
Alright
http://www.twi.co.uk/j32k/protected/band_3/jk3.html
This is helpfull
andy c
15-04-2008, 10:35 PM
Hi Hipposs,
I used to find using a size 18 nozzle worked for me on 2.1/8" tube, but then I only had four sizes, No.3 for small stuff, No.7 for medium, No.13 for big, and No.18 for bigger sizes. It worked for me, but I haven't done upward of 2.1/8" for a few years and cant remember what size nozzle I used for 4.1/8". I'm sure someone else will be able to shed some light.
Regards, Andy C.
The Viking
15-04-2008, 10:42 PM
For those pipe sizes you will nee the largest nozzle you can find.
Personally, I favour THIS (http://store.weldingdepot.com/cgi/weldingdepot/WD-MFA-x.html) type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.
Chunk
15-04-2008, 10:44 PM
For those pipe sizes you will nee the largest nozzle you can find.
Personally, I favour THIS (http://store.weldingdepot.com/cgi/weldingdepot/WD-MFA-x.html) type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.
Pepperpots.
The Viking
15-04-2008, 10:46 PM
"A loved child have many names"
(Chinese proverb)
Chunk
15-04-2008, 10:52 PM
That link i posted up top,is that chart any good?
US Iceman
15-04-2008, 11:11 PM
I have used tips similar to those described by The Viking. Thed do cover a large area with a large flame, but you still have to move the tip around to evenly heat larger pipes. And be careful with the oxygen settings. You do not want a cutting torch!
My best advice is to heat the pipe uniformly all the way to the depth of the fitting socket and not get in a big hurry. Large pipes take time to braze well.
nike123
15-04-2008, 11:16 PM
I dont know there, but here I have nozzles marked
0,5-1
1-2
2-4
6-9
9-14
14-20
and I using 6-9 and 9-14 for 54mm CU pipes.
monkey spanners
15-04-2008, 11:40 PM
Since getting a pepperpot burner i've used nothing else (except a mapp gas blow lamp on small stuff) Every oxyacc set should have one, great for compressor changes etc.
Years ago i did some 3 1/8 pipe but for that we just drilled out a nozzle to get a bigger flame....don't try this!
Peter_1
16-04-2008, 07:13 AM
Or this ones at the bottom of the pages http://www.mir.be/NL/catalogue.php?cid=11
SteinarN
16-04-2008, 12:12 PM
For those pipe sizes you will nee the largest nozzle you can find.
Personally, I favour THIS (http://store.weldingdepot.com/cgi/weldingdepot/WD-MFA-x.html) type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.
I find it preferable to use this type of nozzle from 1 1/8" inch and upwards. It heats more "softly" and over a wider area. It gets faster to heat the large pipes with that "multi nozzle" burner.
hipposs
16-04-2008, 07:46 PM
thanks guys your posts have been of a great help for me
martinw58
17-04-2008, 10:17 AM
Citb Brazing Recomend Pepperpots
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