Wear is dredging ship flow parts (such as pump, impeller, blade etc.) the main wear form, dredging ship flow on sand abrasion by domestic and international dredging industry parts. In order to improve the anti abrasion performance and service life of the flow of vulnerable parts, usually adopts the method of hardfacing in parts of the working surface (such as reamer, mud pump, impeller, anti abrasion ring wear surface) surfacing wear-resistant layer to improve its wear resistance and service life.

Tungsten carbide ceramics because of its high melting point, high chemical stability, high hardness and excellent wear resistance and corrosion resistance, has become a hot topic in the study of metal ceramic composite materials than in recent years, tungsten carbide fiber reinforced metal matrix composites, has the advantages of simple preparation process and low cost.

Sintered carbide is a combination of high hardness, high toughness and high strength materials, which is due to the existence of a metal bonded phase in tungsten carbide in continuous network form. But sintered ceramics with metal bonded phases have poor mechanical properties at high temperature and have been proved to be easy to corrode. Therefore, people are replacing other ceramic materials with more chemical stability.

Rhenium is a rare metal element. It is located at the seventy-fifth place in the periodic table of elements, and is adjacent to tungsten (74). Rhenium is well known that its melting point is 3180 degrees, and it is second refractory metals.

At present, the scheelite flotation method in our country is mainly used to treat scheelite with alkali pressure cooker treatment technology of wolframite. However, the process consumes large amount of energy, high production cost and large waste water discharge in subsequent processes. does not meet China's energy-saving emission reduction, low-carbon economy development requirements.