Posted: Sat Dec 01, 2012 8:06 pm Post subject: Welding Cast Iron with 7018 (Video)
So, a little while back I posted about my $20 purchase of a broken-in-two Chas Parker bench vise. I asked about welding it with 7018, and with stainless filler and was told by multiple people who know more than I do that it was a bad idea. So, I did it anyway.
I got it apart and took a look at it, and discovered my first problem... I'm a cheapskate. I could braze it, but im currently not set up to braze. I could spend $23 on a pack of electrodes for a $20 vise? Naaaa, I'll just use some of this here 3/32" Hobart 7018 thats been sitting in the open air since last may. Worst case senerio is that I'm out $20, well, $10 after I scrap this thing if it doesn't work. I fired up my nice little StickWeld 250, set it to 86 amps DCEP (intentionally ran kinda cold) and away I went!
All I did was beveled the joint, and tacked it up. It welded like crap but the tacks held. Next stop was the BBQ, then the welding bench. The video tells the story better than I can, hope you guys enjoy it.
I was really thrilled when I saw that it held, and didnt split or anything after I dug it out of its bucket of sand. I put it back together and cranked down on it, and it held. Then I put a cheater-bar on the handle and cranked some more and it took it like a champ, so I called it a day.
Im gonna paint up my $21 vise and enjoy it. Have a nice weekend, everybody
Posted: Sat Dec 01, 2012 10:45 pm Post subject: Re: Welding Cast Iron with 7018 (Video)
Lanse I am glad that it seems to have worked out well. I have been wondering about something. Is that Vise really cast Iron??? I have several and they are Cast Steel. A low grade of steel but still steel. That will weld pretty good.
The truth of the matter is that that old vise is more than likely stronger than the cheap imports you get for a few hundred dollars now days. Good American made vises will start at $750 and go up now.
Posted: Sun Dec 02, 2012 5:52 am Post subject: Re: Welding Cast Iron with 7018 (Video)
A good share of vices are sold as a combo vice and anvil. Cast iron would never work as an anvil. More people do not understand the difference between cast iron and cast steel than do. Find a piece of actual cast iron and run a bead of 7018 and see the difference.
Posted: Sun Dec 02, 2012 7:21 am Post subject: Re: Welding Cast Iron with 7018 (Video)
I would be skeptical that it's cast iron and not steel.
Most cast irons have very low ductility as compared to steel and they won't take the same tensile load that steel will. There are the exceptions with ductile iron and some of the more highly alloyed materials but the manufacturer may get a better price on the casting by just going with steel.
Posted: Sun Dec 02, 2012 8:10 am Post subject: Re: Welding Cast Iron with 7018 (Video)
Puddles: I saw where the question was asked also but I have not seen where he answered the question.
The main reason is that while I really like what Lanse does I don't want someone to ruin some real cast iron trying to weld it with 7018 rods. Lanse is a young man that is learning a lot. That is GREAT. I just don't want people mislead on things by what he has had work ONCE.
I have welded true cast iron many times. I always used brass to braise it or Nickle welding rods. There are some cheaper cast rods but I never have any luck with them.
Truthfully with as much skill Lanse has posting/making his videos and such, would he be better off with a computer degree???
I think he does not realize how hard a life style being a full time welder really is. I love the do small projects and such but the fun wore off real fast when I had to do it for 40-50 hours a week.
Posted: Sun Dec 02, 2012 10:32 am Post subject: Re: Welding Cast Iron with 7018 (Video)
JD Seller wrote:
(quoted from post at 09:10:00 12/02/12) I think he does not realize how hard a life style being a full time welder really is.
Only time will tell. Can't tell you how many times I went to work sick as a dog. Before putting my boots on taping up a sprained ankle. One day during a snow storm a 24-inch Crescent wrench slipped off a nut and broke my nose. Right back at work the next morning. When you only get paid for time you've worked, miss 1/2-hour, they dock you a 1/2-hour. Money, or lack of is a big motivator!
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