badabec
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Hello, I am trying to simply braze two pieces of steel together. My set up is oxyacetylene, nickel bronze plain rods and a 40 year old tin of SIFBronze flux. I mix the flux to a paste with water and spread that on. I also dip the heated end of the rod in the flux.
I heat until dull red and then apply the rod. With the heat from the torch a blob of rod falls onto the metal, balls up then spits. It won't flow. By now the flux is jet black and I am pushing around a jelly like mess with the rod. When it cools, the flux is like black glass and won't come off and the filler is bobbly underneath. The steel is plain steel, cleaned up with a flap disc. The pictures show a test piece, still no joy.
What am I doing wrong?
I heat until dull red and then apply the rod. With the heat from the torch a blob of rod falls onto the metal, balls up then spits. It won't flow. By now the flux is jet black and I am pushing around a jelly like mess with the rod. When it cools, the flux is like black glass and won't come off and the filler is bobbly underneath. The steel is plain steel, cleaned up with a flap disc. The pictures show a test piece, still no joy.
What am I doing wrong?