Description:

Two 12th grade students Pham Thanh Trung and Ngo Duc Thang, of the Nguyen Hue High School in the northern province of Ninh Binh, invested their time and passion to produce the machine that keeps users safe and reduces environmental pollution as well.

Their dream came true in 2012 when their scheme of "Green Park Using Green Energy" won the second prize of the VIFOTEC.

"That prize encouraged us so much in creating other machines in the future," Trung said.

Then they had the idea of creating a welding machine using water to weld and cut metal.

"It can cut all sorts of metal of 10mm size and can weld components with high fidelity requirement without using an added oxy tank because the oxygen quantity  was increasing during the process of electrolysis," Thang said.

Thang said the novelty about the machine was that it used water while operating, which caused no harm to the environment and saved costs for users, as compared to a normal welding machine.

The machine's price is about VND 3 million compared with the VND 5-6 million of a normal welding machine, which also needs up to 3.5 times the money to buy fuel. It is also easy to operate and safe for users, particularly those in remote and isolated areas.

Applied field: Mechanical