Molybdenum News Center

Molybdenum has a good electrical conductivity and high temperature properties, especially thermal expansion coefficient of the glass is extremely similar, is widely used in the manufacture of the lamp filament coil to the core wire, lead wires, hooks, brackets, and the other side of the lever member, as a gate in the tube and the anode electrode support material. Molybdenum is used in VLSI gate metal-oxide semiconductor, the integrated circuit is mounted on the molybdenum can eliminate the "bi-metal effect." Ultra-thin seamless pipe used as a molybdenum anode high-definition TV picture tube bracket, this television image scanning lines of 1125, increased by 2 times higher than the average TV. Molybdenum wafer can be made of the power transistor heat shield and silicon rectifier substrate and heat sink. 

 

Structural materials in modern electronics industry, in addition to the use of pure molybdenum addition, Mo-Re alloys can be used for special tubes and bulbs, Mo-50Re and TZM alloy tube may be used for high power microwave and millimeter-wave tube thermionic cathode structure member, its working temperature can reach 1200 ℃, current density of up to 10 amps / cm 2. As a pure molybdenum wire lead recrystallization temperature is low, the high temperature embrittlement prone to affect life in recent years, was developed to add other Si, k, and C elements to raise the recrystallization temperature, to produce a "high-temperature molybdenum wire. "Take the rare earth element yttrium, cerium, lanthanum in the production process, such as molybdenum, more effectively improve the recrystallization temperature, overcoming the material at high temperature embrittlement problem. Containing 0.1-0.3% zirconium, molybdenum wire of 0.1% scandium, at 1200 ℃ nitriding treatment, the scandium alloy to diffuse throughout this molybdenum wire tensile strength at 20 ℃ up to 1,400 megapascals. 

 

The rapid development of mold industry, so EDM technology has been widely applied, molybdenum wire is ideal WEDM electrode wire can be cut all kinds of steel and carbide, an extremely complex parts machining shape, its discharge machining stable, can effectively improve the accuracy of the mold. 

 

These are the two most widely used molybdenum wire uses, development of manufacturing and the rise of the lamp mold manufacturing, making the production and consumption of molybdenum wire by leaps and bounds. According to the China Lighting Association statistics, in 2001 the national production of molybdenum Sida to 3.15 billion meters, the actual production is estimated to reach 40 million meters, consuming nearly 800 tons molybdenum, their number is very considerable. Which wire cutting molybdenum wire production over two billion meters, accounting for more than half of the total molybdenum wire, its market prospects are very encouraging.

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