General | Brazing cast iron? | Practical Machinist - Largest ...
Jul 29, 2009 · I attended a welding seminar years ago and the subject of how to prep cast iron for brazing came up. According to Hoyle, abrasive particles from the grinding wheel will embed themselves in the soft cast iron, contaminating the weld area. The welding rep made the comment " we haven't discovered how to weld rocks yet". Stuart
General | Silver brazing cast iron - Practical Machinist
Jul 20, 2005 · I have a maybe 5 pound cast iron casting that has an "ear" broken off. New casting. Clean break. Will silver braze "suck" into the joint and join the parts. Very low stress part. I guess the question is will silver braze adhere to cast iron. A …
What flux do you use for brazing cast iron? - WeldingWeb
Jun 2, 2016 · There is a time and place for everything. I have Ni rod and Have welded cast iron for many years. Sometimes brazing is the best answer. Last week I fixed a flywheel for john Deer diesel engine . I brazed it. It had a worn pilot bearing hole. It was worn about 3/16 of an inch all the way around. A new one was $1150.00.
General - Archive | Brazing Cast Iron - Practical Machinist
Mar 12, 2001 · Cast iron contains something like 3.5% carbon in the form of free graphite (which is why your hands get blackened if you are filing of machining cast iron). If you were to weld cast iron with carbon steel filler metal, the free graphite in the cast iron would be absorbed into the molten metal int he weld zone.
Brazing cast iron - WeldingWeb
Aug 8, 2021 · Re: Brazing cast iron If it isn't some super rare (expensive) vise, bevel out the crack, fill it with Ni99, Ni55, or any other cast rod, and call it good. Let it cool SLOW after the weld.
Brazing rods for castiron - WeldingWeb
Nov 2, 2023 · 1) BLUEFIRE 1/2 lb 9pcs Bare Bronze Brazing Rods Low Fume Copper Brazing Alloys Diameter 1/8” Length 14” Solid LFB Sticks for TIG MAPP Propane Torch Gas Welding Brass Carbon Steel Cast Iron Nickel Alloy
Brazing Cast Iron - Flux and Rod Recommendation.
Sep 4, 2015 · Cast iron will braze up fine with just the normal brass rods and flux. I use the kind that has the flux on the rod. I just finished a couple pump casings, both with about 14" of crack.
Brazing cast iron, TIG or gas? - weldingweb.com
Oct 23, 2018 · These are very structural joints, attaching the base to a 2” thick cast iron plate, and brazing on flanges that will bolt the pieces together. I’m still not sure if gas or TIG brazing is the way to go.
Brazing a cast iron engine block - WeldingWeb
Feb 26, 2011 · Bronze filler (depending which one you used) usually exceeds the tensile of the cast iron. Many engine castings fall in the 40,000 lb tensile range, the low fuming bronze I use has a 60,000 tensile, and a nickel silver (brazing rod) I use is 80,000 tensile. So you should be good for strength if weld cross section is same as iron.
Silver brazing cast iron | Page 2 - Practical Machinist
Nov 14, 2020 · I welded a broken cast iron part using cast iron rod and cast iron flux. I jigged the parts on an angle iron fixture and heated the whole thing to a red heat in a coal forge. I then used a torch and puddled the cast iron rod into the v that I …