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Home > Plasma Torch > High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
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High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories
High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories

High-Quality Independently Research And Develop Plasma Surfacing Torch 300 Manufacturer, Factories

Plasma arc is the torch makes gas to ionize to form an arc (also called compressed arc) between cathode and cold nozzle or between cathode and work piece. When the arc passes through the hole of the water-cooled nozzle, it is cooled by the cold air flow and the hole wall of the water-cooled nozzle. The cross-sectional area of the arc column is reduced due to increase the density of charged particles and the intensity of electric field through compression effect of thermal, mechanical and self-magnetic. This compressed arc is called plasma arc which has high temperature, heat concentration, good thermal stability and controllability.
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Product Description

Technical Specifications
ModeDJPT30018-HQ
Main ArcWater-electricity integration
Tungsten electrode-WorkpieceNegative-Positive
Mode of Tugsten4.8
Arc Voltage90V
Welding Current30-300A (80% temporary load rate)
Pilot ArcWater-electricity integration
Tungsten-NozzleNegative-Positive
Pilot Arc Current3-20A (100% Temporary load rate)
Mode Powder feedingAggregate
Volume Powder feedingMax. 150g/Min
Gas Powder feeding1.0-3.0L/min
Type PowderAlloy Powder
Size Powder70-200um
Passage Powder feedingDouble gas passage
CoolingCircular cooling
Ion gas0.5-6L/min
Shield gas5-25L/min
Nozzle CoolingWater cooling directly
Diameter Nozzle3.0-5.0 mm
Length Cable5 m (customized available)
Product Decomposition & Features

The plasma surfacing torch 300A is professionally designed with the following components: back cap, tungsten electrode clip, tungsten electrode, torch body, shield gas ring, powder hole ring, water hole ring, central ring, nozzle, locking ring, and shielding cover.

Nozzle Technology: The core of the PTA welding torch. The powder feeding hole is interspersed inside the nozzle, allowing powder to be fed into the plasma arc without interference, completing the powder cladding process efficiently.
Cooling System: The channel of circulating cooling water is opened on the nozzle for effective cooling. This reduces the nozzle hole wall temperature. Gas entering the spray gun air chamber at specific pressure stays closer to the hole wall with lower ionization. This creates a circle of insulating and heat-insulating neutral gas flow between the arc and the wall, forcing arc current concentration and ensuring arc shrinkage.
Central Ring: Designed to keep the center hole of the copper nozzle perfectly concentric with the tungsten electrode for precision performance.
Frequently Asked Questions
What is the welding current capacity of the DJPT30018-HQ?
The welding current ranges from 30A to 300A with an 80% temporary load rate, while the pilot arc current operates between 3-20A at a 100% temporary load rate.
What types of powder can be used with this plasma surfacing torch?
It is designed for Alloy Powder with a particle size between 70-200um. The maximum powder feeding volume is 150g/Min.
How is the nozzle cooled during operation?
The torch utilizes a direct water cooling system with circular cooling channels built into the nozzle to maintain low temperatures and prevent ionization near the hole walls.
What are the gas flow requirements?
The system requires Ion gas (0.5-6L/min), Shield gas (5-25L/min), and Gas for powder feeding (1.0-3.0L/min) via a double gas passage.
Can the cable length be customized?
Yes, the standard cable length is 5 meters, but customized lengths are available upon request to suit specific industrial requirements.
What is the role of the central ring in the PTA torch?
The central ring is critical for maintaining concentricity between the center hole of the copper nozzle and the tungsten electrode, ensuring a stable and focused plasma arc.

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