kubota engine block welding

[yomax4]

KastWeld 111 is an 18" long 1/4" stick of actual cast iron. It is used to braze problem cast. When you heat cast red hot with a torch or zap it with a welder, The first damage is done to the copper content of the cast. The Kast Weld 111 has a flux but by adding a foot of copper thin strand wire, It makes it flow out better and it puts the copper back into the cast. The reason I like Spray Powder and KastWeld111 is because they Work.. And they do not change the integrity of the base metal like blasting it with a Ni rod does. Arc Welding cast has been around for many years and can be a 1st line of thought for repair. Part of the cracking problem with stick welding is the voltage blast you give the material when you strike the arc. It spreads all of the molecules back from the point of the arc changing the integrity of the material in the joint and that makes it stress out and crack. Spray Powder goes on much cooler and is much more ductile than a stick weld. The molecules stay put and the crack issue goes away. KastWeld 111 can and is used in any combustion area because it is cast iron. Spray powder is Nickel-Iron and can be used anywhere else. If you choose to use a stick rod, use 1/2" long welds and let it cool before doing the next 1/2". You will have much less cracking and no pre-heat post-heat - peening hassles. Some cast will be un-weldable because its burnt out. Each repair will be different that the last.

 

[yomax4]

Sorry, Kast Weld 111 is a Harris Welco product. Lincoln Electric bought Harris Welco about 4 years ago and are letting it die. When you check with your welding supply house, Tell them that it is a Harris Welco product. It was always a Household name in the states..Spray Powder, Check out the Victor website. Great Product, Comes with Powder and a video. Spray Powder it the easiest cast repair product out there but it will cost you $300 to get started.

 

[Tanqwa]

Pity, Harris products are excellent, have a torch. Never heard off the powder, def will investigate. Many thanx for the info, always good to hear from some-one who clearly knows what it's about. One is never to old to learn, should always be on the lookout for ways too improve. I believe that things are better done right from the beginning instead of having to do the same job, cut corners and having to do it over again, end up costing more.

 

[westcliffe01]

Afrox have suitable rods, you may have to special order them, given your geographic challenges. I spent a few years in Vredenburg and while it was a bigger place than the town you mention, it was pretty quiet back in the day (were talking late 70's). My mother also owned a home in Fouriesburg that used to belong to President Steyn and that was really a one horse town... On the other hand, I spent a night in Trompsburg many years ago and I don't think I would be moving there anytime soon.

Afrox is part of the Linde group (german) and they have everything needed even if you are building a refinery, air seperation plant or offshore platform.

Products & services - Welding consumables - Cast Iron - MMA

 

[Tanqwa]

You from SA? If you see Vredenburg today, malls and all...........

Spoke to a collegue yesterday about the rods, yip are available but very costly but i think worth a try, esp for those special jobs.

thnx