Electrode Eutectrode 1855 Xhd 3.20Mm 1.0Kg

Mechanical properties

1855XHD is ideal for corrosion resistance of coating large surfaces used in the chemical industry. It may be used for assembling complex aluminium bronze alloys, for rebuilding and modifying aluminium bronze parts or for coating parts subject to intense metal to metal friction. Ship propellers, propeller shaft sleeves, rudder components, turbine and pump housings, mixer blades, gear wheels, screw-shaft carrier rings, side plates, valve housings, roller extension segments, valve gates, turbine injector needles, forming matrices, pump turbines, winch components, rotary seals, shaping tools, bearings, heat exchanger plates, rotary valves, gearings.

Preparation
Ensure that all areas to be welded are free from contaminants, oxides etc.

Preheating
is not generally necessary. However when welding large heavy sections, preheating up to 150°C may be required with approximately 200°C maximum interpass temperature. For overlaying steel components, preheating depends upon type, size and mass of base material.

Welding parameters
Procedure A
High amperage welding for massive parts, maximum welding speed.

Procedure B
Low amperage welding for parts which should not be overheated, minimum dilution.

Welding polarity (+)
Welding technique
1855XHD has been developed with ease of welding as an important prerequisite. It provides good weldability even with low preheat temperatures. Striking and restriking the electrode is easy, and the deposit is almost perfectly smooth and regular.
Employ minimum amperage for each diameter to minimise dilution. Maintain electrode angle near 90° and a short arc. A weave technique can be applied at up to 3x core wire diameter. Ensure that all slag traces and defects are removed, followed by thorough wire brushing after each weld pass.
Cast and wrought CMA-1 and CMA-2 alloys may be postweld-heat-treated by heating weld areas to 650°C and cooling slowly below 500°C in order to improve weld metal properties.

Storage and handling
Safely stack and store electrodes in a dry location to avoid humidity pick up or coating damage. If necessary, redry electrodes at 150°C for 1-2 hr.