Molybdenum Piercing Plug

The operating principle of a molybdenum piercing plug is based on its unique thermal and mechanical properties. Molybdenum is a refractory metal that has a high melting point and excellent thermal conductivity, making it ideal for use in high-temperature applications.

During glass manufacturing, the molybdenum piercing plug is brought into contact with the molten glass. The high thermal conductivity of molybdenum enables the plug to transfer heat quickly from the molten glass, preventing the formation of a cold layer at the tip of the plug.

The piercing plug is then used to pierce and form a hole in the glass. The mechanical strength and toughness of molybdenum allow the piercing plug to withstand the high stress and pressure generated during this process. The excellent wear resistance of molybdenum ensures that the piercing plug maintains its shape and size, providing consistent performance over extended periods.

Overall, the operating principle of a molybdenum piercing plug is based on its ability to withstand high-temperature and mechanical stresses, making it a reliable tool for glass manufacturing.

The specifications of a molybdenum piercing plug may vary depending on the specific application and requirements of the glass manufacturing process. Generally, molybdenum piercing plugs are made from pure molybdenum or molybdenum alloys and have the following specifications:

• Material - Pure molybdenum or molybdenum-rhenium alloy

• Purity - 99.95% or higher

• Diameter - Typically range from 2 mm to 15 mm

• Length - Ranging from 150 mm to 600 mm or more

• Tensile Strength - 800 MPa or higher

• Melting Point - 2,620°C or higher

• Thermal Conductivity - 143 W/mK at room temperature

• Coefficient of Thermal Expansion - 5.1x10^-6/K at 20-1000°C 

Other specifications may include surface finish, straightness tolerance, and dimensional accuracy.

It is important to note that the specifications of a molybdenum piercing plug will depend on the specific application and usage, and as such should be selected carefully to ensure optimal performance. Factors such as temperature, pressure, and the chemical composition of the glass may also need to be considered when selecting a piercing plug.