View Full Version : Welders, start your drooling
Brettus
14-10-13, 10:48 AM
Posted on reddit as welders porn, thought some of you on here would appreciate it:
http://i.imgur.com/3csr7ya.jpg
http://i.imgur.com/9KGrSjc.jpg
http://i.imgur.com/xOysuAr.jpg
http://i.imgur.com/02alB6K.jpg
yorkie_chris
14-10-13, 10:51 AM
*dribble*
Wouldn't make that in a tea break would you!
atassiedevil
14-10-13, 11:05 AM
That's pretty.
Oh that i had the skills (and gear) to be able to do that.
Griff-SV
14-10-13, 11:20 AM
Oh god, oh god, oh god :D
keith_d
14-10-13, 11:33 AM
Talk about a steady hand. Or was it a demonstration piece for a 5-axis welding robot??
Specialone
14-10-13, 11:57 AM
Talk about a steady hand. Or was it a demonstration piece for a 5-axis welding robot??
Yep looks too perfect for manual, could be wrong though, there are some top welders around.
Brettus
14-10-13, 12:40 PM
I don't think it is a robotic one from the context of the comments but make up your own mind, here is the discussion:
http://www.reddit.com/r/pics/comments/1oegap/i_see_cables_can_look_pretty_to_you_guys_but_do/
ClunkintheUK
14-10-13, 02:01 PM
One of the first comments from Reddit was about Nicolai bikes. My brother has a Nicolai and I can attest to it being one of the most beautiful machines ever made. Shame he rides like a lump.
keith_d
15-10-13, 08:08 AM
I don't think it is a robotic one from the context of the comments but make up your own mind, here is the discussion:
http://www.reddit.com/r/pics/comments/1oegap/i_see_cables_can_look_pretty_to_you_guys_but_do/
I stand corrected - they are custom manifolds made by John Marcella (http://marcellamanifolds.net/). All hand welded.
Keith.
_Stretchie_
15-10-13, 09:20 AM
Ppfft, I weld like that..... Is something I will never say while looking at those pics :)
Brettus
11-02-14, 08:43 AM
Some more, slightly more appropriate too:
http://i.imgur.com/mfuwD3q.png
http://i.imgur.com/EKAR2ou.png
http://i.imgur.com/YRDO0bn.jpg
Original article: http://imgur.com/a/366dL
Comments thread: http://www.reddit.com/r/motorcycles/comments/1xk5cs/suzuki_frame_nickel_bronze_welded_by_trident/
ah and it is brazing not welding apparently, TIL!
yorkie_chris
11-02-14, 08:50 AM
:)
Brazing is done at lower temperatures so you get less distortion and less effects on the parent metal.
Brettus
11-02-14, 09:20 AM
Alright then, so what is the difference between Welding, Brazing and Soldering?
CharleyFarley
11-02-14, 09:46 AM
Alright then, so what is the difference between Welding, Brazing and Soldering?
I once soldered a coke can onto the exhaust manifold of my Casal 50, helped along with numerous clips!!!
Pity I dont have photos.........I'd put those "V8" manifolds to utter shame!!!! 😝
"Gas it w###a".........
Welding is a done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint. Usually the same materials joined and the filler of the same.
Brazing is a metal-joining process whereby a filler metal is heated above melting point and distributed between two or more close-fitting parts by capillary action. Used in bicycle frames, plumbing etc. Fillers can be brass, copper, silver.
Soldering is a process in which two or more metal items are joined together by melting and flowing a filler into the joint, the filler metal having a lower melting point than the adjoining metal. Electrical joints, jewellery, etc. Filler is usually a tin / lead mix.
:mrgreen:
Techie teacher spiel.
Gorgeous! As close to my definition of "art" as it gets. I could have any of those pieces in my house and never get sick of seeing them!
C
Brettus
11-02-14, 02:55 PM
Welding is a done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint. Usually the same materials joined and the filler of the same.
Brazing is a metal-joining process whereby a filler metal is heated above melting point and distributed between two or more close-fitting parts by capillary action. Used in bicycle frames, plumbing etc. Fillers can be brass, copper, silver.
Soldering is a process in which two or more metal items are joined together by melting and flowing a filler into the joint, the filler metal having a lower melting point than the adjoining metal. Electrical joints, jewellery, etc. Filler is usually a tin / lead mix.
:mrgreen:
Techie teacher spiel.
Nice reply! thank you!
Brazing and soldering sound a whole lot alike. I don't get why so many terms exist, seems a little unnecessary somehow. Another thing I learnt today though :D :cheers:
yorkie_chris
11-02-14, 03:19 PM
That might have been done with TIG brazing by the look of it
Matt-EUC
11-02-14, 03:25 PM
Nice reply! thank you!
Brazing and soldering sound a whole lot alike. I don't get why so many terms exist, seems a little unnecessary somehow. Another thing I learnt today though :D :cheers:
Brazing is generally for bigger stuff. Soldering is used for little things like circuit boards and jewellery. Also, soldering uses an "iron" and you use a flamethrower for brazing.
Brazing and soldering use essentially the same principle, it's just the material which is different. Braze is much stronger than lead or tin based solders, and needs a much higher temperature to do it.
There is a sort of half-way house which is "silver solder", that has much more strength than tin/lead solder but doesn't need quite the temperature of regular brazing. Silver solders come in a variety with melting points in the realms of 650-800C depending on the mix.
Just for info, this shows typical temperatures for tin/lead solder of different percentage mix
Tin/Lead Melting Point
40/60 460ºF (230ºC)
50/50 418ºF (214ºC)
60/40 374ºF (190ºC)
63/37 364ºF (183ºC)
95/5 434ºF (224ºC)
Brettus
11-02-14, 04:48 PM
That IS interesting, I expected a uniform slope to the mixes but not a curve, why is that? anyone know off the top of their heads? no worries if not, just a random question I was throwing out there.
Sid Squid
11-02-14, 05:23 PM
Brazing and soldering sound a whole lot alike.
Essentially they are the same principle - a filler metal is melted into the joint between the parts to be joined, and the joined parts aren't disturbed. Welding is where the parts are brought to, or very near to, their melting point and become part of the joint themselves, whether or not a wire or rod is used.
There are several welding processes that use no wire or rods at all, the parts are joined directly, for example spot welds - where two electrodes are pressed together firmly either side of two sheets to be joined, a high current is passed between them causing localised melting and the metal to run together and be joined. With a spot weld the electrodes are two pins that make a small roughly circular welds, a variation is where the pins are replaced by wheels that roll across the surface making a seam weld.
There are other processes such as friction welding where the two parts are spun against each other with such force that the resulting friction causes heat, melting and thus a join is made. Forge welding, (the original kind of welding), where two hot parts are hammered together such that they fuse.
That IS interesting, I expected a uniform slope to the mixes but not a curve, why is that? anyone know off the top of their heads? no worries if not, just a random question I was throwing out there.
The minimum is called the Eutectic. A common characteristic of metal alloys etc. Try Wiki.
adjective
adjective: eutectic
1.
relating to or denoting a mixture of substances (in fixed proportions) that melts and freezes at a single temperature that is lower than the melting points of the separate constituents or of any other mixture of them.
DJFridge
11-02-14, 09:23 PM
For me, the difference is even more straightforward. I can't weld, I can't braze but I can solder! Wish I could weld like that though, however said it was almost art wasn't wrong.
Brettus
11-02-14, 09:43 PM
The minimum is called the Eutectic. A common characteristic of metal alloys etc. Try Wiki.
adjective
adjective: eutectic
1.
relating to or denoting a mixture of substances (in fixed proportions) that melts and freezes at a single temperature that is lower than the melting points of the separate constituents or of any other mixture of them.
:smt104 :smt115 :cheers:
Cool! Thank you!
Specialone
11-02-14, 09:56 PM
I used to have to silver solder carbide tips in to stainless thin wall tubes, that was tricky, some of the trickiest joining two thingies I've ever had to do, had to be careful getting the carbide too hot or it went brittle.
I've done a fair bit of brazing too, getting the material very clean really helps, or it won't run very good.
Interesting thread for a change :)
timwilky
12-02-14, 03:04 PM
Just to add strange metal joining techniques.
I used to have to braze tips to cutting tools as a 16 yr old using induction brazing. No flames, no heat, just put the workpiece in the coil and it glows.
So let some impressionable kid, see you doing it. then put your hand in. see if they will put theirs in the ring.
But make sure they are not wearing a cheap ring.
keith_d
12-02-14, 06:02 PM
The minimum is called the Eutectic. A common characteristic of metal alloys etc. Try Wiki.
adjective
adjective: eutectic
1.
relating to or denoting a mixture of substances (in fixed proportions) that melts and freezes at a single temperature that is lower than the melting points of the separate constituents or of any other mixture of them.
Eutectic mixtures are interesting when they cool because frequently one component will crystallise out of the melt until what remains is the euctectic mixture at which point the whole melt solidifies.
So if you melted 90% tin/10% lead and then cooled it slowly you would get slushy crystals of tin until you reached 183C when the remaining material would solidify. If you cool it quickly the tin crystals don't get time to grow and it appears to be a homogeneous alloy.
A nice example of how properties change depending on how quickly materials cool.
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