Characteristics of fused silica heating tube

Characteristics of fused silica heating tube

(1) The extremely low coefficient of thermal expansion results in strong thermal shock stability. It does not deform at high temperatures and can withstand drastic temperature changes within 1100 ℃ even in oxidizing environments.

(2) Excellent corrosion resistance, and the product surface is very durable.

(3) High purity chemical composition ensures that the product components and surface quality in contact with it are not contaminated.

(4) Excellent ceramic physical properties ensure stable performance at ambient and high working temperatures, with small dimensional errors and excellent surface quality. Stable shaft heads, each labeled with a number, with a quality inspection report and traceability.

Fused silica ceramic roller

Extremely low coefficient of thermal expansion, strong thermal shock stability, and no deformation at high temperatures

● High purity of raw materials and excellent chemical and physical properties

Precision processing technology and precise dimensional accuracy

Reliable shaft head connection technology

Common misconceptions of hot runner electric heating pipes

Mistake 1

The thinner the better:

Some customers blindly demand thinness when choosing heaters, and use it as a sign of the manufacturer's strength. In fact, a heater with a thickness of only 0.5 can be made without requiring power or service life, but the process is just a bit complicated.

Mistake 2

Judging by color:

Some heaters in Europe and America have a grayish green surface, and some domestically produced heating coils have high brightness. In fact, these are all related to surface treatment or even cutting corners without the tempering process.

Mistake 3

The softer the better:

The surface armor metal of soft heaters is generally made of a special type of copper, and all processes are the same as other armor heaters. This type of copper material requires a high quantity every time, and the total market demand for soft heaters is not large, so general manufacturers are unwilling to produce it.

Myth 4

The higher the power, the better:

The resistance of the electric heating wire in an electric heater is selected based on the set power, and the higher the power, the lower the total resistance. There is an appropriate range for the resistivity of electric heating wires. If the resistivity is too large or too small, short or long, thin or thick electric heating wires are required, which poses difficulties in manufacturing and using electric heaters of all sizes. An important parameter of electric heating wire is surface power. If the resistivity is too high and a certain current is applied, the surface power will also increase. So for low-power appliances, small diameter small current is chosen, but the size of the current depends on the size of the resistance, and the length and diameter of the heating wire are calculated.

If we blindly pursue high power, we need to increase the surface area to ensure that the surface power does not exceed the standard. At the same time, in order to ensure high power, there must be sufficient current, so there is a limit to power when the surface area is fixed! The quality of producing high-power electric heaters cannot be guaranteed.

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