Details

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1. Introduction

• NSM welding machines are commonly used for arc welding (SMAW/MMAW).

• They are robust, reliable, and widely used in construction, fabrication, and repair work.

2. Key Features

• Portable and durable design

• Suitable for stick welding (electrode welding)

• High efficiency with stable arc performance

• Overload protection for safety

3. Applications

• Steel fabrication

• Pipeline welding

• Shipbuilding

• Maintenance and repair

Component	Description
Transformer	Steps down voltage for welding current
Rectifier (if DC)	Converts AC to DC for smoother welding
Cooling Fan	Prevents overheating
Control Panel	Adjusts current settings (Amps)
Electrode Holder	Holds the welding rod
Ground Clamp	Connects to workpiece for circuit completion
Cables	Heavy-duty wires for current transfer
Casing	Protects internal components

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Specifications of a Typical NSM Welding Machine

Parameter	Specification
Model	NSM-250A (example)
Input Voltage	220V / 380V (AC)
Output Current	50A - 250A (adjustable)
Duty Cycle	60% @ 200A
Open Circuit Voltage	50-70V
Efficiency	≥ 85%
Insulation Class	Class F
Protection	Overload & thermal cut-off
Weight	~15-25 kg (portable)
Welding Rod Compatibility	1.6mm - 5.0mm electrodes

• NSM welding machines are simple, efficient, and cost-effective for stick welding.

• Suitable for beginners and professionals in construction and repair.