Cast Iron Welding Rod Electrode AWS ENi-Cl

CHARACTERISTICS:

THZ308 is pure nickel welding core, strong reduction of graphite type coating iron rod. It can be used in AC and DC dual purpose and is  easy to operate. When welding, it is not necessary for weldment to preheat. It has good crack resistance and processability.

RECAUTIONS:

1. Before welding, the electrodes need to be baked for 1 hour with the temperature of 150±10℃ before using.

2 It can eliminate welding stress and avoid crack by hammering the welding seam.

1. In order to reduce the impurity elements in the base metal penetration weld, narrow white band width, improve crack resistance and processing properties, it should use small current welding in cast iron cold welding.

WELDING POSITIONS: PA, PB

Cast iron electrodes are Fe-C alloys with a mass fraction of carbon greater than 2.14%. In fact, industrial cast iron electrodes are generally multi-element alloys based on Fe-C-Si. Cast iron electrodes are often used to solve the problems of wheel breakage, cracks, wear, and punching holes in engine shells, covers, machine bases, and casting teeth. Soldering problems.

There are roughly three types of cast iron welding: cold welding, semi-hot welding and hot welding. The selection of welding materials is divided into two types: homogeneous welding and heterogeneous welding. At present, China can provide dozens of cast iron electrodes, and we can also choose welding electrodes according to the characteristics of cast iron electrodes, the requirements for welding and repairing parts, the performance of cast iron materials and the importance of welding and repairing parts.

Applicable process of cast iron welding rod.

1. Proper surface cleaning must be done before welding, and the welded joint should be obliquely cut into a U-shaped groove.
2. Stop crack holes at both ends of the crack to prevent crack expansion during welding.
3. When the angle of repair is not good, you can use WE100 welding rod to cold groove to form an effective U-shaped or V-shaped groove.
4. Weld with as little current as possible, medium arc length, and slightly inclined to the welding direction.
5. It is recommended to use short and thin welding beads and a narrow lateral swing welding torch to fill the weld joint before stopping arc welding. Usually no heat treatment is required and the parts are allowed to cool slowly.

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