KH-25-R Stick Electrode

Description

KH-25-R
Type of coating: High titania type
Weld metal is a pearlite structure and has good machining properties

Classification


Application and Features 

• Weld metal is a pearlite structure and has good machining properties
• It provides excellent arc re-start, slag removal and bead appearance
• KH-25-R is suitable for metal-to-metal wear due to stable hardness
• It is suitable for repairing sprockets, crane wheels, shafts and gear wheels

Crane wheel and shaft

Welding Position


Welding Instruction

• Dry the electrodes at 70-100°C for 30-60 minutes before use
• Clean up the contaminations on the steel to prevent porosity
• Preheat temperature should be above 150°C for multi-layer welding of low alloy steel or high carbon steel
• Welding parameter and operating technique must be carefully chosen to prevent slag inclusion in narrow gaps welding

Application
- It is suitable for repairing sprockets, crane wheels, shafts and gear wheels

Typical Chemical Composition of Weld Metal (wt%)


Typical Hardness of Weld Metal


Size and Suggested Operating Range (AC or DC+)

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