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Product name：KH-W
 
Classification：A5.13
 
 

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

 

Welding Instruction

(1) Dry the electrodes at 100-200°C for 30-60 minutes before use.

(2) Preheat temperature should be ≥ 250°C and PWHT should be 600°C.

(3) Weld beads should be put down in grid shape to prevent the surfacing layers from spalling.

Typical Chemical Composition of Weld Metal (wt. %)

C

Si

Mn

W

Fe

3.150

0.30

2.10

42.3

bal.

Typical Hardness of Weld Metal

        Hardness

Condition

Vicker’s hardness

（HV）

Rockwell’s hardness

（HRC）

Shore’s hardness

（HS）

Interpass temp.≤300°C

760

68

85

Continuous build-up

645

67

77

Size and Suggested Operating Range (AC or DC+)

Diameter x Length(mm)

3.2x350

4.0x350

5.0x350

Amp

90~140

140~190

190~250


No.8, Luke 3rd Rd., Luzhu Dist., Kaohsiung City 821, Taiwan (R.O.C.)      TEL:886-7-6955155      FAX:886-7-6955166

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