| Author | Message | ||
| S. Evans
|
I have a gate project going in which I have to use cast iron spear heads from Lawler, and I need to attach them to the tops of 3/4" solid steel square bar pickets. It looked like the square holes in the spear heads were tapered, so I was hoping that I could just tap them down onto the pickets, but it doesn't look like this is going to work. Can I TIG weld them on with mild steel rod, or do I need to go to some exotic alloy for the filler rod? All insights are appreciated. | ||
| robert a. kezelis (Rkezelis)
|
my local BOC supplier has some specialty rod that he swears works on Cast. It comes in a variety of sizes, but I can't say I've tried it myself yet. | ||
| Tom Boman (Tommyboy)
|
Try putting a magnet to your castings.If the magnet sticks to the peice chances are a 7018 or equivalent ductility rod will hold.If the magnet doesn't attract you will need an alloy rod ,nickel,stainless, ect. If the peices are not to big you also have an option to braze them on but you will need to control the cooling rate by putting them into something like an absorbant floor dry which is a great way to cool the metal slowly.Good luck. | ||
| Buddy Coleman
|
Use A Nickel Rod. I do alot of Cast Welding. Works great. Heat the Spears before you try and weld them . When they cool fast that is when the stress is at its highest | ||
| Randy Mundt
|
I've been drilling the spears and pickets then tapping the picket for an 8-32 machine screw. Make the hole in the spear a little oversize to take care of variations in the spears. I like the looks of this a little better than welding, plus if you break a spear they are easy to replace. Set up a jig of some sort to locate the holes on a drillpress,don't measure each one unless your just doing a few,put the tap in a cordless drill, goes pretty fast. I have welded some with 7018 or mig,preheat first. | ||
| Michael |
I also use nickel rod with preheated cast iron with success.  | ||
| marcoesquandoles |
I just mig it with steel.....I've done a thousand of them with no probs... | ||
| Alfonso Albacete |
Found that nickel is best. Ofcourse if someone is willing to pay you for the extra labor drill and tap sounds great but alot of work if it's a large job. Make sure you get some extra cash for it. | ||
| Ken Scharabok
|
Old thread, but I would find it difficult to believe the supplier didn't offer some type of adapter, one end to fit the inside of the heads and the other to go into tubing. Here it might be worth while to purchase from a different ornamental iron supplier to get something which works out of the box so to speak. | ||
| Richard Bergin (Richard777)
New member Username: Richard777 Post Number: 2 Registered: 10-2009 |
Does anyone have experience nickel plating steel? Is it necessary to have a number of coats of copper to stop corrosion? Some of my parts are tubing on flatbar, and the gap inbetween allows plating fluids to gather and then after plating leak out and spoil the nearby areas. Any suggestions? Thanks Richard | ||
| Francis Cole (Trez)
New member Username: Trez Post Number: 65 Registered: 3-2007 |
I have welded cast parts to solid steel with the mig welder worked fine. I know through King Artchitural metal has them to fit on spicific size tube or solid stock. |