China's first CNG/LNG power ship specification released
Iron-based alloy powder is commonly used in plasma transfer arc welding (PTAW) due to its excellent mechanical properties and high resistance to corrosion and heat. This type of powder is typically composed of iron as the base metal, along with various alloying elements such as nickel, chromium, molybdenum, and tungsten. Fe Alloy Powder,Stainless Powder,High Temperature Powder,Iron Base Pta Welding Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcthermalspray.com
The "Natural Gas Fuel Power Ship Code" is a study of CCS in the "Gas Fuel Power Ship Inspection Guide" (2011), based on the research on key technologies of natural gas fuel power ship and the key technology research of marine liquefied natural gas (LNG) fuel tank structure. The results and a large number of practical research results, in accordance with the target ship standard (GBS) and risk assessment concepts, apply to the specification of steel ships powered by natural gas fuel (CNG / LNG). The introduction of the specification, designed to meet the development needs of the construction and retrofit in the field of domestic CNG / LNG powered ship.
Compared with "gaseous fuel-powered ship inspection guidelines," "norms" major "new" in the following aspects. First, from the perspective of ease of use, in the "Guide" on the basis of the canonical structure for adjustment, and the new cylinder, a gaseous fuel engine technology, the electronic control system, a large heat exchanger 4 as a key product requirements Appendix 4; Second is the "Guide" part revision, increased gas tank connected to premises-based test tube, place the gas valve means, the semi-enclosed storage requirements in the premises, the air supply line valve arrangement diagrams of gas tank spaces, the cabin air supply system, gas engines and other functional requirements of the content has been adjusted; three new fuel gas is filled, the relevant technical standards required LNG filling nipple; Fourth concept throughout the specification is always the risk analysis , the new failure mode and effect analysis (FMEA) requirements.
The specific composition of the iron-based alloy powder may vary depending on the desired properties and application requirements. For example, adding nickel can increase the strength and toughness of the weld, while chromium enhances the corrosion resistance. Molybdenum and tungsten are often added to improve the high-temperature strength and creep resistance of the weld.
Iron-based alloy powders for PTAW are available in various particle sizes, typically ranging from a few micrometers to several hundred micrometers. The powder is usually fed into the plasma arc through a powder feeder, which ensures a controlled and consistent supply of powder during the welding process.
During PTAW, the powder is melted and deposited onto the workpiece, forming a weld bead. The high energy plasma arc provides the heat necessary to melt the powder and the base metal, creating a strong and durable weld joint.
Overall, iron-based alloy powder for plasma transfer arc welding offers excellent weldability, high mechanical properties, and resistance to corrosion and heat, making it suitable for a wide range of applications in industries such as aerospace, automotive, and power generation.