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Hongky Master Digital MMA Welder HKM250D

The Hong Ky HKM250D digital stick welder belongs to the Digital series and applies the most advanced control technology in welding machines. The machine weighs 5.5 kg, has a capacity of 250A, and can weld electrodes from 2.6 to 4.0 mm. With a reasonable price, the HKM250D is equipped with many smart features, allowing users to experience modern technology without a large investment
Product information
  • DC Stick Welder (MMA / SMAW)
  • Digital Control
  • Current capacity: 250A
  • Electrode diameter: 2.6 – 4.0 mm
  • Features: Hot Start, Arc Force, Anti Shock, VRD
  • Modular circuit board design for easy replacement and repair

Overview

Stick Welding Machine HKM250D

Simple and easy-to-control design

The Hong Ky HKM250D digital stick welder features a simple design, with the front and back panels made of hard plastic. The corners are extended outward to provide maximum protection for the machine and help reduce its weight. Large ventilation slots ensure effective cooling. The control panel and welding parameter display are clear and detailed, allowing users to easily adjust settings.

Modern digital control technology (Digital Control)

  • Utilizes MCU microcontroller technology for easy and precise control, enabling flexible welding function customization.

  • Traditional mechanical buttons are replaced with push buttons combined with clear displays. The machine also automatically saves welding programs, making it very convenient for users.

Powerful performance – unleash your creativity

  • The machine uses IGBT technology to stabilize the arc during welding at high power.

  • It operates on a single-phase 220 Volt AC power supply, providing an exact output current of 250A.

Advanced welding technology – widely applied

  • Stick welding (MMA/SMAW) operates simply and flexibly in all positions and environments.
  • Electrode diameter: 2.6 – 4.0 mm.
  • Can weld continuously with ten 4.0 mm electrodes at 30°C ambient temperature.
  • Suitable for welding materials such as iron, steel, low-carbon steel, and common stainless steels.
  • Widely applied in mechanical-related fields, such as repairs, welding iron doors, awning frames, prefabricated houses, vehicle frames, tables and chairs, shelves, and small construction projects.

Advanced features

  • Hot Start: Automatically increases the starting current higher than the set welding current to make arc striking easier and reduce electrode sticking. This feature is especially effective for damp electrodes, difficult-to-strike electrodes, and welding surfaces that are unclean or rusty.

  • Arc Force: Maintains a stable and strong arc to prevent arc interruption and electrode sticking during welding, improving weld quality. It is particularly helpful during manual welding when the distance between the electrode and the workpiece varies continuously.

  • Anti Stick: Automatically reduces welding current when electrode sticking occurs, protecting the electrode, weld, and equipment from damage, and making it easy to remove stuck electrodes from the workpiece.

  • Intelligent Anti-Shock (VRD): Lowers the welding voltage when there is no load to reduce the risk of electric shock, ensuring safety when working in wet environments or at heights.

Intelligent power saving

Inverter control technology helps save energy and optimize working efficiency.

Modular circuit board design reduces repair costs.

The internal circuit boards are designed as separate modules, with main functions divided into multiple individual boards. This makes it very easy for users to replace and repair at a low cost.

Overload/Overheat Warning Light

The warning light will automatically illuminate, helping users promptly identify any issues with the machine and take appropriate corrective actions easily.
Support & Warranty

Electronic warranty with a duration of 18 months.

Consultation: (+84) 28 73036536

 

 

Specifications

Specifications Detail
Input Power 1 – Phase (220VAC ± 15%, 50/60Hz)
Function MMA
Rated Welding Output 250A, 30V DC, 10% Duty cycle at 40ºC
Amperage Range (A) For CC Mode 20 – 250
Voltage Range (V) For CV Mode 20.8 – 30
Maximum Open Circuit Voltage DC 65V
Amperage Input At Rated Load Output 50/60Hz, Single Phase 220V – 60.8A
KVA (Maximum input power) 13.4 KVA
KW (Maximum input power) 8.6 KW
Dimension (L × W × H) 340 × 178 × 273 mm
Weight 5.5 kg

User Manual

Updating

High actual current machine. High input amperage.

For electrical safety, the power cable should not have a plug.

Standard plugs cannot withstand the current consumption of the machine.

It must be connected directly to the circuit breaker.

Accessories

  • 300A Ground Clamp
  • 300A Welding Clamp