Kontakt Screw - Electrode for extracting broken screws

In Stock
ID: 521
Product Code: 23534677889

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Description

Electrode for removing broken bolts

Classification

AWS A5.5 : Not specified
ISO 2560-A : Not specified
EN 499 : Not specified

Properties and application

Special electrode for repair works, designed for removing broken bolts, drills and other broken parts from cast iron, steel or aluminum components.

Easily weldable to broken steel and tool steel parts.

The special coating forms slag that protects the thread and, after cooling, acts as a lubricant, making removal easier.

Application: repair works in all fields.

Base materials

  • Carbon steel
  • Alloy steels
  • Tool steels

Mechanical properties

Rp0.2 (MPa)Rm (MPa)A5 (%)KV (J)
>500>850>20+20°C: >70

Electrode / Welding current

Ø x L (mm)Current (A)
2.0x30045
2.5x30070
3.2x350110

Recommendations

Place a nut of appropriate size over the hole with the broken bolt.

Weld through the nut, holding the electrode parallel to the axis of the broken part, without interrupting the arc until the threaded hole is filled and a “cap” can be formed.

After cooling, unscrew the welded nut together with the broken part.

Electrode diameter selection

Broken part diameterElectrode diameter (mm)
Up to 10 mm2.0
Up to 16 mm2.5
Up to 36 mm3.2
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