Yuanshen Machinery Co., Ltd., Guangzhou City, Guangdong Pearl River Delta region mechanical surface engineering technology backbone, and the first in the industry through the ISO9001-2000 quality system certification. The company is located in Huangpu District, Guangzhou, South China economic center, adjacent to the Beltway, Guangyuan Express high-speed interoperability in this, the Pearl River Delta cities uniform hours to reach the traffic is extremely convenient. 
 On the converter hoods, flue 
 Converter hoods, also known as the converter waste heat recovery unit, general activity hoods, furnace smoke and said the last paragraph of the flue activities hoods decreased to prevent blowing air into the mixture combustion and collection of high-temperature flue gas. Both have a lot of heating surface, used to reduce flue gas temperature. Generally composed by the 20 pot of low carbon steel heating surface. 
 Steelmaking process, flue gas, its temperature up to 1100-1400 ° C, up to 1600 ℃, and containing sulfur and its compounds, high temperature slag, lime, etc. a lot of dust. Therefore, the heating surface under the erosion of solid materials, acid gas corrosion and high temperature oxidation, and easy to spills of high-temperature slag blowing splashed on the heating surface to the formation of high temperature erosion, dross. 
 Hoods, flue in such an environment for a long time, poor working conditions, especially under sulfur gas to the heating surface corrosion, high temperature oxidation and erosion wear, can easily produce a large number of bamboo-shaped thermal fatigue crack in a water-cooled tube, hemp point, perforation leakage, the impact of steelmaking production efficiency. 
 Thermal spray hoods Protection 
 Many methods of thermal spray technology, but in recent years the development of arc supersonic spray hoods protection process, its advantages are: 
 A low cost, high efficiency; 
 2, the bond strength than other spray; 
 3, the wire can be added to the ceramic powder, to improve the Erosion Resistance. 
 Thermal Spraying protective effect, but the construction is very difficult, high-cost, easy to deform. 
 Comprehensive domestic and international experience, we have developed a three-layer composite arc supersonic spray coating, on the hoods and power plant boiler certificate, both prolong life for more than three years.