Machine bases, pumps and differential housings, cast iron dies
For crack-sensitive applications such as castings involving hydrostatic pressure, joints under restraint, dissimilar thicknesses and the general welding of very heavy sections. Excellent for joining cast iron to steel. Circumferential pipe welds, especially heavy wall thickness, can be made without danger of cracking. Dense welds are completely machinable.
Clean weld area. V out cracks with Excel Gouge after drilling holes at the ends of the cracks. Preheat is not required in most cases. Preheat critical parts to 250°C. Direct arc on deposited weld metal. Lightly peen to relieve stress. Chip slag between passes. Use skip welding sequence in complicated assemblies. Cover casting and allow to cool slowly.
SIZE (mm) | AMPERAGE |
400 | 130 – 145 |
3.15 | 110 – 120 |
1. Tensile Strength: 57,000 psi