Suspension Bridge Main Cable Welding Capsule development
Chemical solder is a simple, high-efficiency, high-quality metal joining process that uses the chemical reaction heat of a metal compound as a heat source to form a shape in the cavity of a special graphite mold by superheating (reduced) molten metal. , size, weld joints that meet engineering requirements.
The chemical solder was evolved from the aluminum thermal bomb developed by the Germans in World War II. After the Second World War, Japan and other companies developed and improved it for the welding of the main cable of the suspension bridge. Now the main cable wire welding in China is imported, and the main purpose is For Japan, the price is high.
Suspension Bridge Main Cable Welding Capsule process route
3CuO + 2Al -->3Cu + Al2O3 (4865°C) +1152 kj
The material to be welded is melted by the heat of reaction generated by the chemical reaction, and after cooling, a copper alloy is formed.
Advanced and innovative Suspension Bridge Main Cable Welding Capsule
The project relies on chemical reaction to exotherm, and the metal to be welded is melted within 3 seconds. After cooling, it is integrated into a special mold. Since the reaction temperature is as high as 3000 ° C, the common metal such as steel and copper is first melted, and then the geometric joint is solidified as required to achieve the purpose of welding. In addition, it does not require electricity and oxygen, and is especially suitable for operation in extremely difficult environments.
Easy on-site operation, no need for power and air supply. Due to the high-temperature melting method, the hidden troubles of the virtual welding and the false welding are solved, and the welding problem of the opposite metal is better solved.
This product reliably solves the problem of slag separation during the welding process. After welding, the slag is automatically separated from the welding point. This product utilizes the degassing technology in the melting process. Therefore, the residual porosity in the solder joint is less than 1%. There is no relevant report in China, which is the first.
Suspension Bridge Main Cable Welding Capsule application field
The products can be widely used on the main cable winding wire of the suspension bridge. The famous Zhu-Gang-Ao Bridge, Runyang Bridge, Qingdao Cross-sea Bridge, Ningbo Hangzhou Bay Bridge and Zhoushan Xihoumen Bridge and etc many many suspension bridge all use this welding.