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Molybdenum, the true "all-purpose metal". Filam like products used in the lighting industry, semiconductor substrates for power electronics, glass melt electrodes, hot areas for high-temperature furnaces, and sputtering targets for flat-panel displays used to coat solar cells are ubiquitous in everyday life.
Read More »Construction of China's first test line for a low-vacuum tube maglev high-speed vehicle with a speed of 1,000 kilometers per hour has begun in Datong, Shanxi Province.
Read More »Tungsten alloy is an alloy with tungsten as the main raw material and silver, copper, iron, nickel, molybdenum and other metal elements as auxiliary materials. The reason why the tungsten alloy should be added in the production of the appropriate amount of metal silver, because the silver element can improve the overall quality of the product, and the product produced, can also be called silver tungsten alloy.
Read More »Tungsten argon arc welding is one of the main method of welding of aluminum and its alloys is one of the most common, this kind of welding power source adopts the ac power, it has high thermal efficiency and tungsten bearing capacity, and can use "cathode crushing effect" clear the oxide film on the aluminum plate welding parts surface, to run the welding, and get a bright and beautiful of the surface of the weld.
Read More »Tungsten is a kind of silver white precious metal, high melting point is difficult to melt, the linear expansion coefficient of tungsten is very small, the elastic modulus and strength are very high, the deformation of thermal expansion and cold contraction is very small.
Read More »Tungsten needle is a kind of slender structure made of pure tungsten or tungsten alloy tungsten products. Because of its good mechanical, thermal and electrical properties, it is widely used in many fields, such as for carving metal surface……
Read More »Tungsten needle, as the name implies, is a product of transition metal tungsten. With its excellent physical and chemical properties, it has become one of the most popular discharge needles in modern times.
Read More »Spinning is an advanced technology which combines the characteristics of forging, extrusion, stretching, bending, ring rolling, cross rolling and rolling.
Read More »3D printing (or "additive manufacturing") is a process that combines materials layer by layer, based on a three-dimensional digital model, as opposed to the traditional process of material removal.
Read More »The high melting point and high strength of molybdenum make it difficult to process molybdenum dry pot. Early processing methods can be summarized as follows:
Read More »Recently, the research group of the Institute of Solid State Physics, CAS has made new progress in the development of nano-structured tungsten based alloy, and successfully prepared high strength double-nanostructured tungsten materials by pressure-assisted low-temperature densification and sintering.
Read More »TZM alloy is the most widely used molybdenum alloy because of its excellent high temperature strength and comprehensive properties. In the United States, TZM alloy is used to make turbine discs of engines, and molybdenum accounts for 15% of the total molybdenum consumption.
Read More »Talking about wire cutting electrode wire, I think you old masters and small masters also know that wire cutting electrode wire is mainly molybdenum wire and copper wire. Choose molybdenum wire, or choose copper wire, it depends on what car is open, is low speed, or high speed fast, or super speed?
Read More »Tungsten material with its excellent properties of mechanics, heat, electricity, etc, has become indispensable to modern many industrial raw materials, such as a large throat lining of the rocket will need to use tungsten copper alloy……
Read More »Tungsten has many excellent properties. It is resistant to corrosion and its melting point of 3,422 °C is the highest among all metals, thus making it ideal for components that work at extreme temperatures.
Read More »An electric current flows through the tungsten wire and heats it. As the heat increases, the energy allows the electrons to be released from the filament by thermionic emission. Electrons are attracted to the positively charged anode and hit the tungsten target at a maximum energy determined by the tube potential (voltage).
Read More »How much do you know about "X-ray tubes" :
They are vacuum diodes that operate at high voltages. Contains two electrodes: a filament that emits electrons as a cathode, and a target that receives electron bombardment as an anode.
Monitoring results of monthly climate index of China's tungsten and molybdenum industry show that in March 2021, the climate index of China's tungsten and molybdenum industry was 41.9, 4.3 points higher than that of the previous month, and it continued to rise for 9 consecutive months, operating in the "normal" range.
Read More »1, fast loss, burning resistance, "tungsten", or even tungsten melting situation.
The reason:
(1) The current is high, which has exceeded the allowable current of the tungsten electrode of this diameter, and it is easy to cause fast burning loss and even melting of the tungsten electrode.
Because of its high melting point and good high temperature performance, tungsten is the best material for electron emission and the best choice for arc starting electrode of argon arc welding. The earliest argon tungsten welding electrode is pure tungsten electrode, but the electron escape work of pure tungsten electrode is relatively high, at about 4.52eV, it is not easy to arc under the condition of small and medium current.
Read More »With the development of industry, molybdenum foil is widely used in deep processing. But molybdenum has high hardness and poor plasticity, so it is quite difficult to make molybdenum into deep processing products.
Read More »Compared with inexpensive lead, tungsten alloys are not only denser (60% higher than lead), but also less toxic; Compared with the steel block with easy raw material, the density of tungsten alloy is twice that of it, and it has the advantages of high hardness, good wear resistance, strong corrosion resistance, high melting point, high temperature resistance and so on.
Read More »Tungsten alloy shield for mobile CT is a new type of lead-free shield with excellent shielding performance for X - rays. Moreover, it is environmentally friendly, non-toxic, and will not have an impact on the water, soil, and air in the environment.
Read More »Tungsten alloy ignition tube has excellent properties such as high temperature resistance, impact resistance, corrosion resistance, high strength, high density and good ablation resistance, which can meet the high temperature ablation resistance conditions proposed by rocket engines.
Read More »Tungsten-based alloy is a kind of metal tungsten based alloy with other metal elements such as copper and molybdenum as auxiliary materials.
Read More »As the representative material of high specific gravity tungsten alloy, tungsten-nickel-iron alloy (W-Ni-Fe alloy) can be well used for large and small mechanical equipment in addition to the counterweight parts, or a very good radiation material, gamma ray and X-ray have a strong absorption capacity.
Read More »Molybdenum is mainly used in the iron and steel industry, most of which are molybdenum oxide pressed blocks directly used in steelmaking or cast iron, and a small part is smelted into ferric molybdenum.
Read More »Molybdenum, a refractory metal, is widely used in electronics, aerospace and energy industries because of its excellent high temperature strength, creep resistance, low thermal expansion coefficient, good thermal conductivity and corrosion resistance.
Read More »Molybdenum is a transition element with a chemical symbol of Mo. It has the characteristics of higher melting point, higher density (10.23g/cm3), better thermal conductivity, lower thermal expansion coefficient and resistivity, etc.
Read More »There is a very important factor in the process of synthetic sapphire production, that is, the long crystal process of sapphire. Why do you say that? Because the heat field material of this link, namely the key preparation material of sapphire single crystal furnace is refractory metal tungsten and molybdenum materials.
Read More »High temperature alloy because of its unique mechanical and physical properties are widely used in aviation, aerospace, ships, electric power, petrochemical and other fields, including tungsten high temperature alloy has more excellent high temperature bearing capacity……
Read More »Tungsten-copper alloy is an alloy material composed of tungsten atom and copper atom, English is Copper Tungsten or Tungsten Copper, copper content is 10% ~ 50%, tungsten content is 30% ~ 95%.
Read More »The tungsten-molybdenum alloy has the common characteristics of tungsten and molybdenum metals, and has good high temperature stability, electrical resistivity and good processing properties under the protection of vacuum or inert gas.
Read More »The silicon molybdenum rod is the silicon molybdenum rod resistance as the heating body, the silicon molybdenum rod resistance electric heating element is made on the basis of disilicide molybdenum, high temperature resistance, oxidation resistance.
Read More »The world's largest reservoir of tungsten is China
Although there are many types of rock, tungsten is found in most rocks, although the actual amount of tungsten present in rocks is very small. Specifically, tungsten is widely distributed in the earth's crust, but only about 0.001% of it.
Tungsten-copper alloy electrode is a kind of composite metal material which is made of high purity tungsten powder and high purity, high plasticity and high conductivity copper powder, and is refined by static pressing molding, high temperature sintering and melting process.Good electrical conductivity, small thermal expansion, no softening at high temperature, high strength, high density, high hardness.
Read More »In addition to tungsten oxide superfine powder, traditional automobile sunroof can also be modified with caesium-tungsten oxide nanoparticles.
Read More »Molybdenum is mainly used in iron and steel industry, most of which is directly used in steelmaking or cast iron after industrial molybdenum oxide pressed block, and a small part of which is smelted into ferromolybdenum and then used in steelmaking.
Read More »Chemical properties of the metal molybdenum
Molybdenum has two outer electron layers, N layers and O layers, which are not filled with electrons. This structure enables molybdenum to have a variety of chemical valence states and can form a wide variety of compounds.
Basic introduction of molybdenum metal
Molybdenum is a member of the VIB group of elements in the periodic table, with atomic number 42 and atomic weight 95.94.Density 10.2 g/cm3.Melting point is 2610 ℃.
In addition to medical radiation shielding parts can use tungsten alloy as the main raw material, industrial shielding parts can also be made of tungsten alloy material.
Read More »Molybdenum has about half the atomic weight of tungsten, so 1 percent molybdenum is about the same as 2 percent tungsten. One of the earliest applications of molybdenum was as a cost-effective alternative element to tungsten in tool steels and high speed steels.
Read More »Today, sputtering targets are used in a wide range of applications, from the semiconductor industry to thin film deposition of various materials used in the processing of integrated circuits, to energy-efficient glass panes in buildings, the familiar gold hard coatings made of titanium nitride, and wear-resistant coatings for tools and consumer products.
Read More »Compared to lead, high-density tungsten alloys are more suitable for the weighting blocks of the new generation of tennis rackets, not only because they are non-toxic and healthy and have a high relative density, but also because they are more resistant to corrosion and oxidation. So why do tennis rackets have counterweights?
Read More »Tungsten plate argon soldering (TIG) is gas shielded welding with a tungsten needle as one pole of an arc.As a non-melting electrode, tungsten electrode has high melting point, less volatile and high strength at high temperature.
Read More »At present, tungsten crucible is widely used in quartz glass melting furnace, rare earth smelting furnace and other industrial furnaces, the working temperature of which is generally above 1900℃.
Read More »Molybdenum has many advantages, such as high melting point and boiling point, good high temperature strength, friction and corrosion resistance, large thermal conductivity, small thermal expansion coefficient, good hardenability, etc.
Read More »Molybdenum crucible is widely used in rare earth smelting, vacuum sintering, laser crystal growth and other industries today. Due to the high price of tungsten and molybdenum and harsh processing conditions, today we will introduce the production process of molybdenum crucible:
Read More »The high frequency pulse negative wave of pure molybdenum plate is too large, and the negative wave of pulse directly corrodes the molybdenum wire, which increases the loss of the wire, reduces the service life of the wire, and causes the wire to be broken in a short time.
Read More »Tungsten alloys have attracted more and more interest because of their excellent properties and potential application prospect. Many researchers have reported the deposition mechanism, structure and properties of nickel-tungsten alloys, and summarized the effects of bath composition……
Read More »Molybdenum is a silvery white metal with good thermal and electrical conductivity, low thermal expansion coefficient and low steam. It has become an important material for electronic and electric equipment manufacturing, metal material processing industry, glass manufacturing, high-temperature furnace structural parts manufacturing, aerospace and national defense industry applications.
Read More »The crystal structure of refractory metal molybdenum is body-centered cubic. Because of its high temperature strength, high temperature hardness and stiffness, strong shock resistance and corrosion resistance, good electrical and thermal conductivity, low coefficient of expansion and excellent heat-resistant fatigue performance, it is widely used in boat dishes, heating elements, heat insulation screen and other aspects.
Read More »Molybdenum is a brittle metal, and layered peeling is one of the main forms of brittleness. Delaminated peeling is not only very common in molybdenum plate rolling production process, but also in various links of plate stretching, shearing, circular punching and other reprocessing processes.
Read More »The evaporation rate of lanthanum at different temperatures was calculated theoretically, and the effect of lanthanum evaporation on the thermal electron emission and stability of carbonized Mo-La2O3 thermal cathode material was analyzed.
Read More »High specific gravity components with high density and corrosion resistance are widely used in national defense and civil industry.
Read More »As the heating element of high temperature heating furnace, silicon - molybdenum electric heating element is a kind of ideal heating element. At present, the highest heating temperature of domestic silicon molybdenum electric heating element is 1700℃.
Read More »In recent years, molybdenum and molybdenum alloy materials have been more and more widely used in the industrial field, which puts forward more and higher requirements for the properties of molybdenum and molybdenum alloy, and promotes the study of molybdenum alloy to deepen continuously.
Read More »Molybdenum and tungsten, as the same group of elements with the same atomic radius (0.136 nm), can form a complete solid solution at all temperatures and in a variety of constituent ratios.
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