Productivity Improvements
| Machining time reduced by 20~30% |
As the combustion rate of Hydrogen gas is faster than that of other fuel gases, the Hydrogen flame is narrower and more concentrated. This provides higher heat transfer rate, higher piercing speed and faster cutting. The shorter piercing time and increased cutting speed provides a significant cost saving when compared with LPG fuelled cutting. |
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The table ( left ) shows the reduction of cutting time for steel plate as nested above. |
Improved process quality
Steel plate when heated for the same time by both conventional and Hydrogen fuelled flames shows the following heat distribution in the plate. The high combustion speed of the Hydrogen flame reduces the flame area and concentrates the thermal energy. This allows the high pressure oxygen passage to heat only the immediate area being cut, preventing excessive heat transfer to the surrounding area. This reduces cooling time and distortion caused by excessive heat stress. |
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| Improved quality of the cut surface |
The surface of cut edge is smooth and dross free, reducing or eliminating the secondary processh should be changed to gThe surface of the cut edge is smooth and dross free, reducing or eliminating the need for secondary processing. |
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Installation and Safety
This system produces Hydrogen gas on site as required.
Consequently there is no storage of high pressure gas required. The machine does not need any special installation or certified or skilled personnel for handling of compressed gas cylinders. |
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Mixture of flammable gas and air or Oxygen is explosive, and it has a lower and upper limit of concentration for explosion.
Lower explosive limit for Propane gas = 2.2%
Lower explosive limit for Acetylene gas = 2.5%
Lower explosive limit for Hydrogen gas = 4.0%
Thus, Hydrogen is much safer than the other gases because of its higher value of Lower Explosive Limit. Additionally, because Hydrogen is lighter than air, it does not stagnate but will quickly diffuse in the atmosphere. |
Environmentally Friendly Cutting
Hydrogen is a clean energy source. Water is the only product of combustion. Hydrogen combustion produces no CO2 because the molecule contains no Carbon atom, Hydrogen is the cleanest energy as an alternative to LPG, Acetylene gas or Natural gas. |
Gas combustion
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