Hydrogen Gas Cutting System

Recently, the introduction of advanced “Hydrogen Gas Cutting” was investigated but finally abandoned due to the problems of several accidents occurred, cost merit and safety. The facility is called “Hydrogen-Oxygen Mixture Gas Generation System” and stores the hydrogen detonating gas (when hydrogen and oxygen are mixed to 2:1 in volume ratio, the mixture gas violently explodes if ignited), so that it is susceptible to explosion accidents even with a small amount of static electricity, if occurs. In addition, because a large quantity of propane is mixed to avoid reaching the explosion limit, the system is less advantageous from the cost point of view and has a problem concerning safety. The hydrogen gas cutting system that we introduce in this report is of “hydrogen-oxygen full separation occurrence method” and therefore less susceptible to explosion, or safe. In addition, the new type torch that does not use propane at all makes high-speed cutting possible. It is the “new hydrogen gas cutting system” that incorporates new technologies to solve the problems of conventional systems. Besides, “The Kyoto Protocol” (global warming effect preventive measures) has taken effect, and Japan has been obliged to reduce the emission of greenhouse effect gas. In such circumstances, the new steel cutting system that uses “hydrogen”, or environment-friendly clean energy without “CO2” emission, has suddenly come to draw attention. Compared with conventional gas cutting systems that use fossil fuel, such as acetylene gas and propane gas, the new system has many advantages not only from the environmental point of view but also from the viewpoint of cost and productivity. Under the present circumstances where companies are required to seriously tackle global environmental issues, hydrogen is drawing attention as clean energy. This report introduces the advanced safe cutting method using hydrogen. This cutting method can meet ecological (environment friendly) as well as economical requirements and is expected to become a dominant cutting method for steel in the future.