KH-W

Type of coating: Special type
Weld metal contains massive tungsten carbide structure with extremely high hardness.

▎Classification

AWS A5.13
JIS Z3251DFWA-700-S
EN 14700
GB T984EDW-A-08

▎Applications and Features

  • Weld metal contains massive tungsten carbide structure with extremely high hardness.
  • It is unable to be machined due to its high hardness.
  • It provides excellent arc re-start and almost not slag.
  • It is used in severe earth abrasion with low impact conditions.
  • It is suitable for repairing oil drilling, mining and dredging equipment.

Dredge agitator

Dredge agitator

▎Welding Instruction

  • Dry the electrodes at 100-200°C for 30-60 minutes before use.
  • Preheat temperature should be ≥ 250°C and PWHT should be 600°C.
  • Weld beads should be put down in grid shape to prevent the surfacing layers from spalling.

▎Applications

It is suitable for repairing oil drilling, mining and dredging equipment.

▎Typical Chemical Composition of Weld Metal (wt.%)

CSi
Mn
WFe
3.150.302.1042.3bal.

▎Typical Hardness of Weld Metal

ConditionVicker’s hardness
(HV)
Rockwell’s hardness
(HRC)
Shore’s
hardness
(HS)
Interpass temp.≤300°C7606885
Continuous build-up6456777

▎Size and Suggested Operating Range (AC or DC+)

Diameter x Length(mm)3.2×3504.0×3505.0×350
Amp90-140140-190190-250

▎Certification