Laboratory Box Furnace

Laboratory box-type furnace, also known as box-type experimental electric furnace or box-type resistance furnace, is a heating equipment widely used in laboratories. Its compact structure, simple operation, precise temperature control, can meet a variety of experimental needs. The equipment usually uses a box-shaped heating furnace, the furnace is equipped with heat insulation layer and thermal insulation layer, and the outside is made of steel plate bending and welding. The working principle is heating by electric current, which generates heat when the current passes through the heating element (such as resistance wire), and the heat is conducted through the furnace wall to the furnace air and the sample. The temperature inside the furnace is evenly distributed and can be flexibly adjusted to meet the needs of various experiments.
With its flexibility and versatility, laboratory box furnaces play an indispensable role in many fields. Through reasonable use and maintenance, it can give full play to its role in scientific research and help technological progress and innovation in various fields.

The equipment works in a high temperature environment, so it is very important to choose the right high temperature refractory. These materials need to be able to withstand high temperatures, maintain structural stability, have excellent thermal shock resistance and corrosion resistance. The following is a detailed analysis of the selection of high-temperature refractory materials for the equipment:

In the equipment, the inner wall of the furnace, the furnace door, the heating element bracket and other key parts usually adopt high temperature refractory materials. For example, corundum refractorsare often used in furnace walls because of their high temperature resistance and thermal shock resistance. Because of its good thermal shock resistance and low cost, silica refractories are often used in auxiliary parts such as furnace doors.

In summary, the selection of high-temperature refractory materials for laboratory box furnaces should consider the operating temperature, coefficient of thermal expansion, thermal shock resistance, corrosion resistance, cost and maintenance and other factors. Reasonable selection and application of high temperature refractory can ensure its stable operation and accuracy of experimental results in high temperature environment.

The sealing material of the equipment plays a vital role in ensuring the stability of the furnace environment, preventing heat loss and ensuring the accuracy of the experiment. With the progress of science and technology and the development of materials science, the improvement of sealing materials has become a key link to improve the performance of the equipment.

The direction of improvement of sealing materials

 

In view of the limitations of traditional sealing materials, the following improvements have been made to its sealing materials:

Use high temperature and corrosion resistant sealing materials

Such as high temperature rubber sealing ring, ceramic fiber rope, high temperature silicone gasket and so on. These materials can maintain stable performance at high temperatures, are not easy to age, deformation, and have good corrosion resistance.

Optimized seal structure design

The contact area and tightness between sealing surfaces are increased by means of concave and convex matching and mortise and groove structure to improve the sealing effect.

Reasonably designed compression mechanisms, such as bolts, levers, hydraulic or pneumatic devices, ensure that the sealing material can be uniformly and tightly fitted to the furnace body when closed.

Strengthen the maintenance and replacement of sealing materials

Regular inspection of sealing materials for wear, aging and damage, timely replacement of faulty parts.

Keep the sealing surface clean to avoid dust and debris affecting the sealing effect.

 

Practical application cases

 

Taking a brand laboratory box furnace as an example, the equipment adopts high temperature rubber sealing ring and ceramic fiber rope as sealing materials, and designs a reasonable pressing mechanism and sealing structure. After long-term use, the sealing performance of the equipment is stable and reliable, effectively reducing heat loss and gas leakage, and improving the accuracy and reliability of the experiment. At the same time, the maintenance cost of the equipment is also relatively low, which has been praised by users.

To sum up, improving the sealing material of the box furnace is of great significance to improve the performance of the equipment, prolong the service life and improve the experimental accuracy. In practical applications, the appropriate sealing material should be selected according to the specific working environment and use needs, and the optimal design and maintenance management of the sealing structure should be strengthened.

The choice of furnace body material is a key decision, which directly affects the performance, durability and safety of the equipment. The following is a detailed analysis of its furnace material selection:

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