Molybdenum is a typical refractory metal because of its high melting and boiling points. With high elastic modulus and high strength at high temperature, it is an important matrix material for high temperature structural elements. The evaporation rate increases slowly with the increase of temperature, so that molybdenum can become an important material for electric light source and is widely used. Molybdenum is widely used in various industries. Let's take a look at the main uses of molybdenum!
Iron and steel industry
As an alloying element of steel, molybdenum can improve the strength of steel, especially the strength and toughness at high temperature. Improve the corrosion resistance of steel in acid-base solution and liquid metal; improve the wear resistance of steel and improve hardenability, weldability and heat resistance. Molybdenum is a good carbide-forming element, which is not oxidized in the process of steel making and can be used alone or together with other alloying elements.
Electronic electrical
Molybdenum has good conductivity and high temperature properties, especially with the linear expansion coefficient of glass is very close, is widely used in the manufacture of bulb spiral filament core wire, lead wire, hook, bracket, edge rod and other components, in the vacuum tube as a gate and anode support material. Molybdenum wire is an ideal electrode wire for EDM machine tool, which can cut all kinds of steel and hard alloy, process parts with extremely complex shape, its stable discharge processing, and can effectively improve the precision of the die.
Car industry
Molybdenum has good high temperature performance and corrosion resistance, molybdenum and steel binding force is strong, so it is the main thermal spraying material in the production of automotive parts. The density of sprayed molybdenum can reach more than 99%, the binding strength is close to 10 kg/mm². This process can effectively improve the wear resistance of the abrasive surface and also provide a porous surface on which lubricating oil can be impregnated. It is widely used in the automotive industry to improve the performance of piston rings, synchronization rings, forks, and other worn parts, and to repair worn crankshafts, rolls, shafts, and other mechanical parts.
High temperature components
Molybdenum is often used to manufacture heating materials and structural materials for high temperature furnaces due to its high purity, high temperature resistance and low vapor pressure. In the process of tungsten, molybdenum and hard alloy production, most of the reduction furnace and sintering furnace by molybdenum wire heating, this kind of furnace is generally reducing atmosphere or non-oxidizing atmosphere. Molybdenum wire can be used to near melting point in hydrogen and ammonia decomposition, and can be used to 2000℃ in nitrogen. Molybdenum is also used as glass melting high temperature structural materials, such as guide tank, pipe, crucible, runner and rare earth smelting stirring rod. Using molybdenum instead of platinum in fiberglass wire drawing furnace has good effect and greatly reduces the production cost.
Oil drilling
When developing acidic natural gas and oil fields in low-lying areas and seabed oil and gas fields, not only a large amount of H2S gas is produced, but also the erosion of seawater, which makes the drilling pipeline vulcanized brittle and corroded rapidly. The high strength stainless steel tube containing molybdenum can effectively resist the corrosion of H2S gas and seawater, greatly saving steel and reducing the drilling cost of oil and gas Wells. Molybdenum can not only be used in oil and gas field drilling pipeline, but also often combined with cobalt and nickel as a catalyst for petroleum refining pretreatment, mainly used for desulfurization of petroleum, petrochemical products and liquefied coal.
Aviation and nuclear industries
Because of its excellent heat resistance and high temperature mechanical properties, molybdenum alloy can be used as flame guide and combustion chamber of aircraft engines, the throat, nozzle and valve of liquid rocket engines of spacesuits, the end of re-entry aircraft, the skin of satellites and spacecraft, ship wing and guide sheet and protective coating materials. A satellite antenna made of metal molybdenum mesh can maintain a completely parabolic shape, while being lighter than graphite composite antennas. The cruise-type missile uses molybdenum-coated material as the turbo-rotor. It works at 1300℃ with a speed of up to 40 -- 60 thousand revolutions per minute, which has shown good results.
Molybdenum chemical products
Molybdenum and chromium, aluminum salts can be co-deposited to produce molybdate red pigment, molybdate ions and metal surface iron ions to form insoluble Fe2(MoO4)3, so that the metal surface passivation, rust prevention effect. Its color changes from light orange to light red, with strong coverage ability, and bright color, mainly used in coatings, plastics, rubber, ink, automotive and Marine coatings and other fields. Molybdenum disulfide (MoS2) is a good solid lubricant, which plays a very important role in industrial applications. It has a very low coefficient of friction (0.03 -- 0.06), high yield strength (3.45MPa), can be used at high temperature (350℃) and various ultra-low temperature conditions, in vacuum conditions can even work at 1200℃ normal, especially in high-speed operation of mechanical parts has a very good lubrication. Therefore, it is widely used in steam turbines, gas turbines, metal rollers, gear teeth, molds, automobiles and aerospace instruments.
Agricultural fertilizer
In recent years, ammonium molybdate has been widely used as trace element fertilizer at home and abroad, which can significantly improve the quality and yield of legume plants, herbage and other crops. Molybdenum can also promote the absorption of phosphorus in plants and play its role in plants, but also accelerate the formation and transformation of carbohydrates in plants, improve the content and stability of plant chlorophyll, and improve the content of vitamin C. Moreover, molybdenum can improve drought and cold resistance and disease resistance of plants.
Baoji Winners Metals provide molybdenum and molybdenum alloy bar, plate, tube, foil, wire and all kinds of molybdenum products, workpiece, etc., Welcome to consult us (Whatsapp: +86 156 1977 8518).
Post time: Oct-18-2022