The research and development capabilities of China's food ultrahigh-pressure processing technology and equipment have entered the world's advanced ranks. At present, some equipment has begun bulk export to the United States, Europe, South Korea, and Taiwan, breaking the technological blockade and equipment of the United States, Spain, Japan, and other developed countries for nearly 20 years. Monopoly, from tracking research to independent development. This is one of the important achievements made by the National 863 Program “Modern Food Engineering Technology and Equipment†project. The quality deterioration and safety problems in the food processing process in China have occurred from time to time. There are also problems such as the lagging of key equipment, high energy consumption, and water consumption. The project has developed large-capacity ultra-high pressure sterilization equipment, high-efficiency energy-saving spray drying equipment, and general canned food products. 21 sets of new equipment such as high-temperature continuous sterilizing equipment and shellfish roller brush cleaning equipment; 8 production lines of high-tech products for engineering food such as solid fermentation production line for aquatic product processing by-products and UHP juice products; 203 papers published, Among them, 80 were published in SCI/EI and 6 monographs were published. In addition, a breakthrough has been made in the uniformization of drying equipment and technology for foods with high energy efficiency. The project achieved a breakthrough in the homogenization technology of solid-state food high-efficiency microwaves in the mainstream of normal pressure and negative pressure, as well as the breakthrough of liquid foods in energy-efficient spray drying under micro-fluid conditions; and the development of uniform and efficient atmospheric and negative pressures. Microwave spray drying equipment, multi-line micro-jet spray drying equipment and other four sets of pilot equipment, established two pilot production lines, developed more than 20 dry products, designed and established an annual output of 300 tons of uniform high-efficiency fruit and vegetable production line. At present, a number of key technologies of the project have broad prospects for industrialization. Ultra-high pressure sterilization technology, high-efficiency and energy-saving drying technologies have been industrialized and applied. At the same time, it has applied for 38 national invention patents (18 authorizations), 3 foreign invention patents (1 authorization), 2 national standards, 1 national second prize for scientific and technological advancement, and 1st class scientific and technological progress of the China Business Federation. One award, the international scientific and technological cooperation achievements won the People's Republic of China International Science and Technology Cooperation Award. Cobalt-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent high-temperature properties and resistance to wear and corrosion. These alloys are typically composed of cobalt as the base metal, with various alloying elements such as chromium, tungsten, nickel, and carbon added to enhance specific properties. Co Powder,Cobalt 6 Powder,Cobalt 12 Powder,Cobalt 21 Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.lygoldentool.com
The use of cobalt-based alloy powders in PTAW offers several advantages, including:
1. High-temperature strength: Cobalt-based alloys exhibit excellent strength and resistance to deformation at elevated temperatures, making them suitable for welding applications that involve high heat.
2. Wear resistance: These alloys have a high hardness and resistance to wear, making them ideal for welding applications where the welded parts are subjected to abrasive or erosive conditions.
3. Corrosion resistance: Cobalt-based alloys offer good resistance to corrosion, making them suitable for welding applications in aggressive environments, such as those involving chemicals or saltwater.
4. Thermal conductivity: Cobalt-based alloys have good thermal conductivity, allowing for efficient heat transfer during welding and reducing the risk of heat-affected zone (HAZ) defects.
5. Compatibility with other materials: Cobalt-based alloys can be easily welded to a wide range of base metals, including stainless steels, nickel alloys, and other cobalt-based alloys, providing versatility in welding applications.
To use cobalt-based alloy powders for PTAW, the powder is typically fed into the plasma arc using a powder feeder. The powder is then melted by the high-temperature plasma arc and deposited onto the workpiece, forming a weld bead. The specific welding parameters, such as arc current, travel speed, and powder feed rate, will depend on the specific alloy and application requirements.
It is important to note that the selection of the cobalt-based alloy powder should be based on the specific welding application and the desired properties of the final weld. Different cobalt-based a