Cast Iron

[vduk]

As this is my first post I would like to say Hello

Down to business: I bought a cheap Chinese sheet metal roller/guillotine/pressbreak and managed to break the cast iron casting that transfer the effort to the press break bit My own fault - trying to bend SS that was too thick

Bottom line is that I would like to repair it. Brazing is no good as it won't be strong enough. I've got a serious tool habit so have a choice of gas, MIG, TIG or arc. I much prefer TIG welding and almost all my welding is TIG these days. I use an R-Tech 201 (200amp AC/DC).

I have been down at TradeQuip (BOC) today and they can't help with any TIG wire for Cast Iron, and even if they could would want to sell me a shed load I watched a vid on Youtube of a chap who repaired a vice using TIG and stainless steel filler rod with a certain measure of success.

I know the obvious method is to use nickle stick rods with the arc welder, but I'd much prefer to TIG it, if it's practical.

Any views?

Thanx

Ralph

 

[wyn]

If it looks like it will be a bit of a pain to weld why not use a couple of plates and bolt it all up...might even make it a bit stronger.

 

[shenion]

I'd braze it. I bet it is stronger than the crap cast metal that is probably made of. I've brazed cast parts and they always broke elsewhere when abused.

SS will work. I used some SS MIG wire to fix a broken pivot on a vertical band saw and it worked well.

 

[awemawson]

Get some nickle stick rods, knock off the flux coating and use them with your tig.

 

[TechnicAl]

I wouldnt use TIG.........too much heat

get some proper cast iron rods (nickel as awemason says) but leave the flux on. Use them as the article on another page.

 

[vduk]

Thanx for the advice. I've just ordered 5 cast arc rods from eBay for a king's ransom I'll let you know how I get on.

Once welded I'll plate it as well to give it some extra strength. It might be cheap Chinese crap, but pre-abuse it was useful cheap Chinese crap