Welding Cast Iron

Welding Cast Iron, with the Henrob 2000

Use the #2 tip 4 PSI oxygen, 4PSI acetelyne

Petersons NO. 2 High Heat Flux

and a pure cast iron rod (Kastweld 111 - by Harris-Welco)

Or an old piston ring will work.

Heat the rod, and dip into flux

And post heat - very important - place item in oven or old gas barbeque grill works well for pre and post heat process,

or cover with asbestos blanket to allow to cool slowly.

This is very important.

General

• This is a soft machinable weld - not hard like nickel.
• Pre and post heat!!!

• #1 for up to 1/8"
• #2 for 1/8" and thicker
• #2.5 tip may be helpfull on 3/8" and thicker

• use 4 to 4 1/2 psi on both gases
• if a 50' hose is used, increase your pressure 1 to 2 psi (see setting up the torch)

• Use a neutral or just off feather
• See setting up torch

• Petersons #2 flux is required. Others available.

Rod material

• We recommend the Kastweld 111 (by Harris-Welco)

When sizing your rod

• 3/32 for under 1/4"
• 1/4" for thicker

• Preheat
• Melt base metal and puddle well
• Flow rod into base metal
• Let puddle "sink" and add more filler rod until desired fill is obtained.
• Move torch in slow small increments - wide oscillations are not necessary.
• Do not remove flame from metal abruptly as this may crystallize the weld.
• Post heat!!!!!