Harbin Welding Institute developed the largest cutting thickness flame cutting equipment in China

Recently, the “Ultra-thickness Steel Ingot Flame Cutting Equipment” developed by the Harbin Welding Research Institute of the Institute of Mechanical Science passed the identification of new products organized by the Heilongjiang Provincial Industry and Information Technology Committee. The maximum cutting thickness reaches 3.5 meters, and the main technical indicators are domestically leading and reach the international advanced level, which is in line with Japan's technical level.

According to reports, the ultra-large thickness flame cutting equipment is the CNC cutting technology equipment for the super large casting and forging project. At present, domestic cutting technology equipment for metal parts with a thickness of 2.6 meters or more has not yet been manufactured. The technical blockade imposed on China by foreign countries is a technical bottleneck that plagues the processing of large metal workpieces in China. The successful development of this product has broken the foreign blockade, greatly improved the level and manufacturing capacity of China's super-thickness cutting technology and equipment, and solved the urgent need for China's key projects and major sections for major engineering cutting.

The cutting thickness of the device can be up to 3500mm, the verticality of the section can be controlled within 12mm/m, and the cutting speed can be up to 35mm/min. The product achieved technological breakthroughs in the following aspects, all of which were domestically pioneered: 1) Developed a supersonic external mixing torch cutting nozzle, developed a 2000~3500mm ultra-thick steel ingot flame cutting process, and achieved efficient and high-quality cutting. Applied for two domestic invention patents, one international PCT patent. 2) Developed a large-flow tempering preventer for ultra-large thickness steel ingot flame cutting, which is stable and reliable. 3) Developed a large-flow energy medium system, and realized the adaptive adjustment of the flame shape by remotely controlling the process parameters such as energy medium pressure and flow rate. Have China's independent intellectual property rights.

The product has been produced in China's Yizhong Group's millions of kilowatt-class nuclear power castings and forgings, large wall thickness hydrogenation reactors and other large castings and forgings. It shows stable operation, reasonable structure, safety and reliability, and can be completed quickly and accurately in a continuous high temperature environment. The cutting and separation of the oversized steel ingots has excellent cutting quality, meets product quality requirements, improves production efficiency by 30%, and reduces environmental pollution.

It is reported that the "super-large thickness steel ingot flame cutting equipment" is the scientific research achievement of the national major science and technology special "high-end CNC machine tools and basic manufacturing equipment". The successful development and application of this product has improved China's technical capabilities in the field of large-scale casting and forging cutting to 3,500 mm, achieving major technological breakthroughs and filling the domestic gap. It solves the problems of high cost, low efficiency and poor working environment for large-scale casting and forging in heavy equipment, ship, nuclear power, metallurgy, heavy machine tool manufacturing, etc., and improves the technical level of China's heavy casting and forging production enterprises as a whole. Market competitiveness.