Gas Brazing Oxygen Hydrogen Welding Machine for Copper Pipe Brazing

Safeflame Hydrogen Brazing Machine was designed and manufactured on the base of Sino-British Cooperation and launched into market in 2019.

What’s NEW?

NEW Safeflame torch design producing a new “FLAME” (Very different from the traditional gas/air or gas/oxy FLAMES)

Safeflame® torches linked to ELECTROLYSERS with SEPARATE streams of HYDROGEN and OXYGEN gases. Dominant “Joining process” is FLAME BRAZING.

Why is it SAFER?

NO premixed gases,

NO gas cylinders,

NO light back,

NO corrosive chemicals. 

From WATER

This “new” safeflame compliments rather than competes with existing commercially available flame. It’s a “new” additional flame now available to the market.

NOT to be confused with flames from electrolysis of water (mixed gas) which uses corrosive chemicals.

Fuel Gases for Flames

Where & who do we get existing fuel gases from ...

WHY has hydrogen generally been the last choice for fuel gas ?

* Low CV (Calorific Value) 330btu/cf, Natural Gas 1000btu/cf, propane 2500 btu/cf, Acetylene 1300 btu/cf

*  Perceived safety issues, particularly with Oxygen and light back

*  Safety issues with chemicals from existing HHO flames from water (mixed gases)

*  Inconvenience of supply from cylinders for both hydrogen and oxygen

*  Lack of real knowledge and experience in the supply chain compared to other fuel gases.

Requirements for combustion: Gas + Oxygen = FLAME

Why choose Hydrogen and Oxgen now ?

* Recent developments with Electrolysis (separate gases) have reduced electrolyser costs so hydrogen and oxygen can now be conveniently sourced from water

* New Safeflame®burner designs produce a new flame with no lightback, less intense, controllable and safer.

* So, for the first time unique benefits of hydrogen and oxygen can now be used safely from a convenient source of supply.

* Flame brazing is used in ALL industries including Automotive, Aerospace, HVACR and Heat pumps and many more sectors.

* Manual and automated methods

* HVACR and heat pumps is a huge global industry.

* Dominant “Joining process” is FLAME BRAZING

* Manually flame brazing holding a gas/oxygen hand torch

Types of Electrolysis

Range of Commercially available electrolysers

Safeflame uses PEM cell:

* Separate gases have two separate outlet connections for Hydrogen and Oxygen.

* Acidic (PEM) with no KOH but uses built-in catalyst

Others use HHO Cell:

• HHO mixed gas has one outlet connection.

• Hydrogen and oxygen gas immediately mix together

• Alkaline type with KOH (electrolyte)

Pre-Mixed & Post-Mixed

 Pre-Mixed:  An “unpiloted” single-orifice Gas-Oxygen Burner nozzle. HHO machines use this kind of pre-mixed burner nozzle.

Post-Mixed Multi-orifices Burner Nozzle, our Hydrogen Brazing Machine use this kind of post-mixed burner nozzle.Dominant “Joining process” is FLAME BRAZING

Range of Burners and Torches

Single and Double Safeflame Torches

Various sizes of Safeflame burner nozzles are available.

Size range – The higher the number the smaller the port size.

Burners and torches can be designed according to customers’ requirements.

Health and Safety

* The system eliminates the usage of Compressed gas cylinders and reduces the possibility of gas cylinder explosion.

* The Hydrogen flame is environmentally friendly. The combustion of Hydrogen and Oxygen produces water vapor and does not produces CO2 emissions, resulting in a better working

environment for the brazing operators.

• The gas pressure inside the Electrolyser is very low (< 0.5 bar) which is below any safety

regulation for high pressure vessels .

• No hydrogen and oxygen gases storage ; machine produces the hydrogen and oxygen

gases on demand.

• Brazing does not require the operator to wear any special glasses.

• The fumes are reduced by about 60-70%

Quality.

The flame is neutral and concentrated; heat is therefore localised and

does not spread, eliminating the risk to overheat the brazing piece and nearby

assembly components. Such a flame drastically reduces the oxidation inside the

brazed pipes. For the refrigeration/air-conditioning industry with less oxidation

inside the copper tubing will result in extended life-time of the compressor.

• Thanks to the neutral flame and high temperature the brazing alloy penetrates deeper into the joint producing stronger connections.

• The Hydrogen and Oxygen gases from the electrolyser are mixed automatically at the tip of the torch thus eliminating the human intervention, the flame’s quality is always consistent therefore quality of brazing improves.