View Full Version : Spot welding ????
02-14-2008, 08:19 AM
Can anyone tell me the best way to weld these two peices together I dont want to heat up the double hook so as to lose its temper in the steel weeking it I need to know what is the best way to do this and most cost affective the two pieces are bronze coated carbon steel
02-14-2008, 11:24 AM
about the only way to weld/barze anything together is with heat. you could try soldering them, as soldering requires the least amount of heat, or possibly just using some sort of liquid/gel adhesive product... polyurethane glue maybe? the main problem you will have with welding that metal is not the size, but keeping the bronze in place. the bronze melts at a much lower temperature than the carbon steel. plus, when you weld it, the bronze liquifies, the steel liquifies, and the two metals mix, creating an unknown alloy, which could harm the integrity of the joint.
in short, i think i would try soldering first, then brazing, then TIG.
02-14-2008, 11:41 AM
the steel will be unbronzed. would a spot welder be my best choice for fast manufacturing?
02-14-2008, 11:41 AM
might think about using stainless steel hooks
but other than that solder, using an iron
or a treble hook an bend one the way you want
02-14-2008, 11:49 AM
from my understanding, a spot welder is mainly for sheet metal. i have never used one, but from the speed that i have seen them work, i would bet that they might melt your pieces too much and just burn everything apart. if you want fast results, use a MIG, set as low as possible, with the smallest wire possible. the problem you will have when using MIG is build-up. TIG is great because you can just fuse everything together with no filler, which means no grinding of excess metal. TIG is better on SS than carbon, but i have seen carbon fused. solder and brazing would take too much time if you are looking to crank out a significant number of these each day.
summary: MIG is fast, but leaves a glob of metal... TIG is a little slower, but no clean up.
02-14-2008, 12:34 PM
You should be able to solder it together (this is how some tattoo needles are made). Get a big iron, like the ones used for stained glass. A simple fixture to hold 20-20 of them and you can just run along and solder them in batches..... at least this is what I would try :)
02-14-2008, 03:34 PM
How about this spot welder:
02-14-2008, 05:05 PM
I've seen numerous large fish (read shark) hooks that were put together to create almost what you are going for there. The most common way I've seen it done is by using fiber (silk, fiberglass, etc...) to wrap around both pieces, and then coating and sealing the wrap with different kinds of resin. Pretty much the way our ancestors used to do it when making a spear, just with stronger materials and better binding resins. If you are to do it this way, the straight barb that you are connecting must be looped at the back (or something similar) to ensure that it can't slide out of the wrap under extreme force.
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