Why Use Molybdenum Electrode to Melt Glass?

Glass is prized because of its clarity, beauty and numerous versatilities. The presence of molybdenum is helpful for its manufacturer and related products for daily use as the material has high strength at high temperature and also has corrosion resistance to molten glass. 

There are records in history for the use of glass by humanity, which can be traced back to the era when primitive people used obsidian glass naturally formed by lava as a knife and cutting. In the development process from ancient history to modern times, glass has proved its practicality in countless applications and has become an indispensable part of daily life. Nowadays, molybdenum is also indispensable for glass manufacturing.

With the advent of electricity, engineers began to design electric furnaces to replace coal or gas fuel furnaces traditionally used to melt glass. Early designs tried to relied on electric arc and radiation to heat glass, but these techniques were not widely accepted. In the 1950s, researchers discovered that molten glass can conduct electricity, and the molybdenum metal electrode can directly heat the glass by passing an electric current through the molten glass.

After that, the use of molybdenum was increased. Molybdenum electrode can be side-entry or bottom-entry. There are also molybdenum stirrers to help to make the melt uniform. The molten glass can protect the molybdenum components from the rapid oxidation of air at high temperatures, so that they have a long and reliable service life. The designer uses inert cooling gas or water cooling to protect the electrode part outside the glass from being oxidized.

The molybdenum component can also protect the refractory materials of the furnace from wear and corrosion, as a refractory brick that covers vulnerable areas as ‘armor’. Even in the absence of molten glass protection, advanced coatings make these components resistant to oxidation during cold start.

If you have any inquiry of molybdenum electrode , please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Advantages and Applications of Molybdenum Electrode for Glass Manufacture‎

Molybdenum electrode is made of pure molybdenum material by powder metallurgy, which has very high purity of 99.95% minimum and a density of 10g/cm3 minimum to ensure the quality of finished glasses and the service life of electrode. 

In Chinatungsten Online, regular diameters of moly electrode range from 20mm to 155mm and the length can reach 1000mm or more, depending on the usage of clients. Usually, the electrode is machined with thread – outer thread or both outer and inner threads. Actually, the current moly electrode replaces original heavy oil and gas energy, effectively reducing environmental pollution and improving the quality of glass.

Advantages 

The material of molybdenum is softer than tungsten material and has an incomparable modulus of elasticity with tungsten. Moreover, moly electrode has high melting point, good machining, corrosion resistance, low expansion, ultra-high strength and rigidity, excellent thermal conductivity, good ductility, easy manufacturing, low emissivity, low resistivity, low vapor pressure, etc.

Applications 

Thanks to its superior characteristics, moly electrode can be applied in different fields. For example, it can be used for welding non-ferrous metals (copper, aluminum, nickel), such as copper braid for switches welding with metal sheet. And considering its high temperature strength, high temperature oxidation resistance, long service life, corrosion resistance and not easy to color glass, moly electrode is widely used in daily-use glass, optical glass, insulation materials, glass fiber, rare earth industry and other fields.

The impurity and grain size of molybdenum powder directly affect the performance of the electrode, and the addition of trace rare earth alloy elements to the electrode can improve the particle size and performance of the molybdenum electrode. At the same time, the selection of raw materials and process control in the process of preparing molybdenum electrodes also affect the performance of the product to varying degrees.

Chinatungsten Online is a professional manufacturer of tungsten and molybdenum with more than 20 years’ producing experience. The Glass Melting Electrodes (GMEs) we provided has very high purity and long service life. 

If you have any inquiry of molybdenum electrode, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.