The weldability of steel affects the welding quality of welded joints. Under the conditions of certain welding methods, welding materials, welding specification parameters and welding structure forms, the degree of difficulty to obtain high-quality welded joints is called the weldability of steel. Therefore, the evaluation of weldability should be conducted from both manufacturing and use aspects. Process weldability mainly refers to the possibility of various cracks in welded joints, which reflects the difficulty of manufacturing. Weldability mainly refers to the mechanical properties, heat resistance, corrosion resistance, low temperature resistance, fatigue resistance and other special properties of welded joints, which reflects the reliability of use.
The R&D team of Kaifeng DEAR Air Separation Plant has made significant achievements and breakthroughs in the research on core technologies and related auxiliary technologies of energy-saving and environment-friendly air separation equipment in the past three years, and has won several patents in this field: new main condensing evaporator, self-cleaning filter, energy-saving oxygen generator, energy-saving nitrogen water precooling system for air separation, a cooling tower, high-efficiency shell and tube heat exchanger, an ultra-low pressure air separation unit Used for low pressure air separation unit with liquid lift function
