Posted by caterpillar guy on December 02, 2023 at 04:02:25 from (47.26.14.222):
In Reply to: Braze it or weld it? posted by stevieb49829 on December 01, 2023 at 22:19:36:
It would need preheating either way Then slow cooling like already said. For brazing it would probably be stronger since the brass will soak in like solder does. Veeing it out to weld can be done though I would just weld it up with regular rod once hot. Grinding cast smears the pore in the iron shut so grinding to vee it out to braze is not such a good idea and chipping a crack on cast that thin is hard to do without causing more damage. The reason I would braze it without grinding on it. Heavy cast press bases they chip out the crack then either braze it or weld them up after preheating you will want to let it cool after the process you choose for about a half day till it is cool enough to touch then worry about any cosmetics you want to do though if brazed well it will not have a lot of material to clean off and might be better left on. then it should be run on a surface grinder to make sure all the face is the same plain so it doesn't crack when tightened up on the engine. I suppose if you had a real flat heavy topped table you could do a light check for flat. Or a granite block would work also.
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