Molybdenum wire
Molybdenum wire can not only process all kinds of metals, but also widely used in winding core wire, lead wire, heating elements, etc. Molybdenum wire has high precision requirements, low wire breaking rate, fast processing speed, and can realize stable and long time continuous processing.
Wire cutting is the use of continuous moving fine metal wire as electrode, pulse spark discharge on the workpiece metal erosion, cutting molding.
In popular terms, this wire is energized, still walking constantly, the workpiece discharge, instantaneous high temperature of several thousand degrees, the part of the discharge melting or gasification, so that cut, note: not hard cut, not the metal wire itself to produce high temperature to cut, but discharge, let the workpiece produce high temperature, melting and corrosion.
The main component of molybdenum wire is molybdenum (Mo), the content is more than 99%, molybdenum in nature mainly exists in molybdenite (MoS2).
For a long time molybdenite was known as graphite, this soft gray mineral, and in the 18th century it was proposed by Scheele that molybdenite itself was not a graphite, but a metal ore. He also tried to reduce the pure metal molybdenum, but the furnace could not reach the required temperature, and many years later it was succeeded by Haykilm in reducing the silver metal molybdenum.
Molybdenum is a silver-white hard metal with high melting point and good ductility. Its melting point can reach 2620 degrees Celsius, and its boiling point is 4639 degrees Celsius. Among the natural elements, only tantalum, osmium, rhenium, tungsten and carbon have melting points higher than molybdenum, which can still maintain a certain hardness even if it is burned red. Molybdenum is also chemically stable and will not be corroded by hydrochloric acid or alkali.
The metal molybdenum is very similar to tungsten in appearance, but it is easily distinguishable by its density, which is only half that of tungsten.
The metal molybdenum is very stable at room temperature. When the molybdenum rod is heated in the air, the molybdenum will be oxidized quickly when the temperature rises, resulting in yellow molybdenum trioxide (MoO3). With the different thickness of molybdenum oxide, it will also show colorful colors. Molybdenum trioxide can be used to produce an important chemical product of molybdenum, ammonium molybdate, which is the raw material for the manufacture of ceramic glaze, pigment and other molybdenum compounds.
Molybdenum is a rare metal on the earth, we are unfamiliar with it and familiar with it, it is closely related to our lives, the application is very wide, it is used in the national defense industry in the strategic metal, is an important nutrient element needed by animals and plants, or an important component of steel alloy.
At present, more than 80% of the molybdenum produced in the world is used in iron and steel smelting, mainly used as an additive for the production of alloy steel, which can improve the strength, toughness and wear resistance of alloy steel. Because of its good mechanical stability and high ductility, it is used in high heating elements (molybdenum is the hook material for hanging tungsten wire in light bulbs), extrusion molds, metal processing tools, Aerospace and spacecraft parts, etc.
In the field of electronics and electrical appliances, molybdenum has good high temperature resistance and conductivity, thermal expansion coefficient is also low, is an ideal wire cutting electrode wire, can cut a variety of steel and hard alloy, its stable discharge processing, can effectively improve the accuracy of processing products, two-dimensional (thickness in a few nanometers to dozens of nanometers of thin layer) molybdenum disulfide and may become the next generation transistor material, Replacing silicon as a widely used material in the next generation integrated circuits.
Molybdenum becomes the nutrient solution of plants is also discovered by accident. People found a special situation on the grassland in New Zealand. The grass on the whole grassland is almost all yellow without any vitality, but the grass on both sides of a path through the grassland is full of vitality. Molybdenum powder carried by molybdenum miners scattered along the road, causing the grass to grow better, and the result was confirmed by mixing it with fertilizer and spreading it on the grass.
The biological properties of molybdenum are also very important. It is not only a necessary trace element for plants, but also for animals and human body. It can improve the immune function of human body, but too high content will cause harm to human body.
Molybdenum with its unique properties, it is not only a tough man in the field, metal catalyst, but also the nutrient solution of life, molybdenum has also proved that it is a versatile metal, with the application of molybdenum more and more widely, there will be more functions to be developed, molybdenum will play a greater role in the society.
