With the declining oil resources, the production of crude oil has become heavy and inferior. Refining and chemical enterprises are faced with the problem of light weight of domestically produced inferior heavy oil and imported inferior heavy oil. At the same time, along with increasingly stringent environmental requirements, it is important to control the quality of steam and diesel to meet the production of clean fuels.

Tungsten is a high melting point rare metal or refractory rare metal in the field of metallurgy and metal materials. It is an important strategic reserve resource for the country. Tungsten is one of the most important functional materials in modern industrial, national defense and high-tech applications. The hard alloy made of tungsten is known as “industrial teeth”. Although China's current strength in the field of high-end alloys still lags behind that of developed countries, after years of hard work, R&D strength has been continuously improved. This article mainly introduces a female scholar who has been studying tungsten tungsten alloy for more than 20 years, Professor Fan Jinglian, director of the Institute of Refractory Metals and Cemented Carbides, Institute of Powder Metallurgy, Central South University.

At present, with the rapid development of industrial technology, the water resources on which humans depend for survival are polluted to varying degrees. Water pollution has become an urgent problem for all countries in the world. The presence of pollutants in water, especially toxic organic pollutants, not only causes environmental pollution, ecological damage, but also seriously endangers human health. These organic pollutants include polycyclic aromatic hydrocarbons, polychlorinated biphenyls, pesticides, environmental interferons, dyes, and the like.

Coarse-crystalline tungsten carbide (WC) can improve the impact toughness of cemented carbide, so coarse-grained and ultra-coarse-tungsten carbide hard alloys are widely used in petroleum drills, stamping dies, mining tools and other fields.