What is Vanadium nitride?
Vanadium nitride, also known as vanadium nitrogen alloy, is a new alloy additive that can replace iron vanadium in the production of micro-alloyed steel. The addition of vanadium nitride to steel can improve the strength, toughness, ductility, thermal fatigue resistance, and other comprehensive mechanical properties of steel, and make steel have good weldability. At the same strength, vanadium nitride can save 30 to 40% of vanadium addition, thus reducing the cost. Vanadium – nitrogen alloys can be used in structural steel, tool steel, pipe steel, reinforcement, and cast iron. Vanadium nitrogen alloy applied to high strength low alloy steel can simultaneously carry out effective vanadium and nitrogen microalloying, promote the precipitation of carbon, vanadium, and nitrogen compounds in steel, and more effectively play the role of precipitation strengthening and grain refining.
What is vanadium nitride used for?
Vanadium nitride (VN) has many applications ranging from structural materials to electrode material owing to its high hardness, excellent wear resistance, high electrical and thermal conductivity, and high-temperature stability.
There are problems with vanadium nitride
Vanadium nitrogen alloy is a top technology in the metallurgical industry because of its difficulty in research and development.VAMETCO and Panzhihua are the only companies in the world that produce them. Panzhihua Iron and Steel co., Ltd. through scientific research, pioneered the "non-vacuum continuous production" technology, which is more advanced than foreign countries, and filled the gap in the field of vanadium and nitrogen alloy production in China.
In 1998, the United States vanadium company came to China for the first time to promote vanadium and nitrogen alloy. During the investigation in Pangang, it was emphasized that "over the past 20 years, Germany, Russia, and Japan have studied vanadium and nitrogen alloy and claimed that they developed vanadium and nitrogen alloy production technology, but over the past 20 years they have not been able to mass production. There is so much knowledge in the production of vanadium and nitrogen alloy that only we can produce it commercially."At the same time, we firmly refused the technical cooperation intention proposed by Pangang and challenged "I will buy what you develop".After years of breakthroughs, in September 1996, Panzhihua Iron and Steel began to establish a project "with V2O3 production of vanadium carbide and vanadium nitride research" and through the "ninth five-year" national science and technology breakthroughs project review, after several years of arduous exploration, ultimately achieve vanadium nitrogen alloy industrialization technology success. The success of this technology not only breaks through the global monopoly of the United States but also more advanced technology, which has reached the international leading level and formed the patent technology of independent intellectual property rights. Panzhihua's vanadium and nitrogen alloy industrialization technology is superior to the similar technology of Vametco in the United States. The main performance is as follows: First, Panzhihua can produce in a non-vacuum environment rather than the high vacuum environment required by Vametco. The equipment is simple, the requirements are lower, the stability is strong, the equipment investment is less; Second, Panzhihua steel process can be continuous production, reduce energy consumption and significantly improve labor productivity; Third, carbonization and nitriding reaction are carried out synchronously in Panzhihua Iron and Steel co., LTD., with simple process and short operation cycle.
From 2002 to 2004, Panzhihua quickly reached an annual production capacity of 2000 tons of vanadium nitrogen alloy within 3 years. In June 2002, Panzhihua 300T/A industrial test push kiln was completed and put into operation. In 2003, as a result of 300T /a industrial test push plate kiln key technology breakthrough, Panzhihua steel decided to formally realize industrialization production, industrialization project supported by the state, was listed as the national high-tech industrialization project; In August 2003, the second and third 300T /industrialization equipment of Panzhihua Iron and Steel Group was successively completed and put into operation, which expanded the production capacity to 1000T /a. In June 2004 and July 2004, Panzhihua new three 300t/a industrial equipment were put into production, so that Panzhihua vanadium nitrogen alloy total production capacity reached 2000t/a scale.
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