LoTherme-630
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For Hard-Facing, Wear-facing or Overlay Applications

LoTherme-630

Electrode is especially meant for cavitation wear, corrosion & high temperature impact.

Characteristics

• It gives soft and smooth arc, which is easy to strike and re-strike.

• Detachability of slag is very easy.

• Smooth, regular and finely rippled beads.

• Weld metal has good erosion and corrosion resistance.

Applications

LoTherme-630 is a highly corrosion resistant, especially against cavitation, erosion, compression and impact, experienced on water- turbines & pump constructions. It is ideal for surfacing on 13Cr - 4Ni stainless steel for service life improvement. As a result of work -hardening under impact to around 50 RC, it exhibits extreme wear resistance in its application areas like high temperature impact resistance on steel plant rolls. Especially applicable for the surface of Turn Over Cooling Bed Rakes. Weld-metal is resistant to scaling up to 900°C Machinable with tungsten carbide tip tool.

Weld Metal Hardness

As welded : 240 BHN

Work hardens under impact up to : 50 RC

Current Conditions : DC (+) /AC


Size (mm)

Dia x Length

5x350
4x350
3.15x350
Current Range (Amps)
180-240
160-195
110-155


Welding Technique

• The electrode should be dry. In case of moisture pick up, re-dry the electrode at 250°C for two hours.

• Use short arc.

• Preheating or PWHT not warranted in case of normal carbon steels or stainless steel base material.

For Hard-Facing, Wear-facing or Overlay Applications

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