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Welding to cast iron........
Moderators: toaddog, TWISTY, V8Patrol, Moderators
Welding to cast iron........
Hi all
Im just about to start building my spare wheel carrier and I have a bit of a drama. I am going to use the modified stub axle method to do this. The bearing holder i have to go over the stub axle is made out of cast iron and I have to attach my wheel carrier to it. Is there any trick to welding steel to cast iron , or anything I need to be aware of? I will be using a stick welder to do it.
Any input appreciated.
Thanx
Im just about to start building my spare wheel carrier and I have a bit of a drama. I am going to use the modified stub axle method to do this. The bearing holder i have to go over the stub axle is made out of cast iron and I have to attach my wheel carrier to it. Is there any trick to welding steel to cast iron , or anything I need to be aware of? I will be using a stick welder to do it.
Any input appreciated.
Thanx
If it is cast iron pre-heat it and then weld but you will have to cool it very slowly. My mate uses a blanket that I think is made from dry fibreglass? and it can take over 24 hours for things to cool in the right environment.
Can't gaurantee cast won't crack later though, it is a different material to steel to start with.
Can't gaurantee cast won't crack later though, it is a different material to steel to start with.
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Cast Iron.... Cast steel ...... give it a grind and the sparks color will tell you ( cast iron produces buck all sparks in a dark orange color )
If its cast steel you'll need a DC welder, 16TC rods ( WIA ).
(nb: these rods dont suit the amaturer welder & require some degree of skill to use..... you'll go nuts trying to use em if your a Mr Joe average welder)
If its cast iron, bronze may well be an option, about the only way to actually get a decent weld.
Castcraft rods will do it ok but preperation is a major key, again a DC welder will out perform the AC unit and when coupled with the long arc style should produce a good weld.
Remember preperation is the key here..... if you think this will take half an hour then start looking at other options, most likely this will take a day to be done correctly.
Personally I cant see why you dont just drill a piece of 10mm plate to suit the stud pattern , mount it onto some 3" pipe and then mount it to ya rack.
That way its all the one material that you can work over and over again and with relitave ease.
Seems like a whole lotta heart ache for SFA reward
Kingy
If its cast steel you'll need a DC welder, 16TC rods ( WIA ).
(nb: these rods dont suit the amaturer welder & require some degree of skill to use..... you'll go nuts trying to use em if your a Mr Joe average welder)
If its cast iron, bronze may well be an option, about the only way to actually get a decent weld.
Castcraft rods will do it ok but preperation is a major key, again a DC welder will out perform the AC unit and when coupled with the long arc style should produce a good weld.
Remember preperation is the key here..... if you think this will take half an hour then start looking at other options, most likely this will take a day to be done correctly.
Personally I cant see why you dont just drill a piece of 10mm plate to suit the stud pattern , mount it onto some 3" pipe and then mount it to ya rack.
That way its all the one material that you can work over and over again and with relitave ease.
Seems like a whole lotta heart ache for SFA reward
Kingy
[color=blue][size=150][b]And your cry-baby, whinyassed opinion would be.....? [/b][/size][/color]
Kingy i beleive he is trying to use the hub on the pivot not to mount the wheel.
Also if its cast steel ive never had a single issue with just pre-heating and welding with a mig. My buggy has run at a guess 20+ Rock Crawling events with a Cast steel Welded steering arm that was welded with a mig without a failure yet.
Also if its cast steel ive never had a single issue with just pre-heating and welding with a mig. My buggy has run at a guess 20+ Rock Crawling events with a Cast steel Welded steering arm that was welded with a mig without a failure yet.
16TC's are low hydrogen and so is a mig.RUFF wrote:Kingy i beleive he is trying to use the hub on the pivot not to mount the wheel.
Also if its cast steel ive never had a single issue with just pre-heating and welding with a mig. My buggy has run at a guess 20+ Rock Crawling events with a Cast steel Welded steering arm that was welded with a mig without a failure yet.
But cast iron does require the correct rods or it WILL break.
I have welded several cast components to different metals and can say if you do this for youself be sure your insurance is paid up, cause it aint gonna be pretty
Go to a professional or find another material.
Carl.
Live fast, die young and have a bloody good looking corpse.
carl v8 patrol is right on rod selection...... mig is a form a of high tensile welding but the low hydro rods are the go...... maybe even some (CIG)cobolt 650's....( these have a higher carbon content) and yes use fiberglass or some other form of insulation to let cool very slow...
secondly it could be bright bar also.... don't some trailers stub axel's made out of the that especially these, run of the mill hubs ... if so do as V8PATROL saids us a dc welder with some of the rods or just mig it it and u will not have a problem.
just use some mild steel components with bolt on items ..... sum think out side the box... there are a few other componants that have a stub with bearing.
just my 2c
secondly it could be bright bar also.... don't some trailers stub axel's made out of the that especially these, run of the mill hubs ... if so do as V8PATROL saids us a dc welder with some of the rods or just mig it it and u will not have a problem.
just use some mild steel components with bolt on items ..... sum think out side the box... there are a few other componants that have a stub with bearing.
just my 2c
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pivot
Save all the hassle why not buy a proper machined steel pivot. When I built my carrier they cost $92.00 delivered for two. Could be alot cheaper in the long run than having the carrier disengage from the vehicle at 100km/h and make itself a new home in someones radiator.
Try this link for the hub.
http://trailerparts.net.au
Good luck.
Try this link for the hub.
http://trailerparts.net.au
Good luck.
Re: pivot
Yup.Grasshopper wrote:Save all the hassle why not buy a proper machined steel pivot. When I built my carrier they cost $92.00 delivered for two. Could be alot cheaper in the long run than having the carrier disengage from the vehicle at 100km/h and make itself a new home in someones radiator.
Try this link for the hub.
http://trailerparts.net.au
Good luck.
This is not legal advice.
old thread
I know this is an old thread, but if you need cast iron welded I know a bloke in Canberra who can do it properly.
He is ex RAAF with all the appropriate gear.
He is ex RAAF with all the appropriate gear.
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