The material selection for the disk of the laboratory heating magnetic stirrer is a common question asked by many customers. For heating temperatures that are not high (less than 350 degrees), we usually recommend ceramic coated aluminum disks.

The application advantages of ceramic coated aluminum discs in heating magnetic stirrers are significant, mainly reflected inCorrosion resistance, heat transfer efficiency, ease of cleaning, durability, and overall performance improvementIn terms of other aspects, the specific analysis is as follows:

1. Corrosion resistance significantly enhanced

• The essence of ceramic coatingsCeramic coatings are made of inorganic non-metallic materials such as alumina and zirconia, which have excellent chemical stability and can resist corrosive substances such as acids, alkalis, and organic solvents.

• Compare metal disk surfacesTraditional metal disks (such as aluminum alloy and stainless steel) are prone to corrosion when exposed to chemical reagents for a long time, leading to rusting, perforation, and affecting instrument performance. The ceramic coated aluminum disc effectively protects the aluminum substrate from corrosion and extends the service life of the equipment through physical isolation.

• Application scenariosSuitable for experiments dealing with corrosive solutions (such as strong acids, strong bases, organic solvents) in fields such as chemical synthesis, biopharmaceuticals, materials science, etc.

2. Optimization of heat transfer efficiency

• Thermal conductivity of aluminum substrateAluminum itself has a high thermal conductivity coefficient (about 237 W/m · K), which can quickly transfer heat to the solution and reduce temperature gradients.

• The auxiliary role of ceramic coatingThe thickness of ceramic coatings is usually controlled at the micrometer level, which has minimal obstruction to heat conduction. At the same time, its surface smoothness can reduce thermal resistance and further improve heat transfer efficiency.

• actual effectThe temperature control range of ceramic coated aluminum plate heating magnetic stirrer (such as Guoli Tian SHA-2D type) can reach 35-400 ℃, the solution heating range is 35-200 ℃, the temperature stability is ± 1 ℃, and the PT1000 thermal control accuracy is ± 0.5 ℃, meeting the high-precision experimental requirements.

3. Easy to clean and low maintenance cost

• Surface characteristics of ceramic coatingsThe surface of the ceramic coating is smooth and dense, and it is not easy to adsorb impurities. When cleaning, only a soft cloth is needed to wipe it, and strong acid and alkali cleaning agents should be avoided.

• Compare metal disk surfacesMetal disk surfaces are prone to residual traces of reagents, and long-term use may result in uneven surfaces due to corrosion, increasing the difficulty of cleaning.

• Long term costsCeramic coated aluminum discs, due to their corrosion resistance and ease of cleaning, can reduce equipment maintenance frequency and replacement costs, making them suitable for high-frequency usage scenarios.

4. Durability and mechanical performance improvement

• Hardness and Wear Resistance of Ceramic CoatingsCeramic coatings have high hardness (such as aluminum oxide coatings with a Rockwell hardness of up to 88), which can resist scratches and wear, and extend the service life of the disc.

• Thermal shock resistanceCeramic coated aluminum discs can withstand rapid temperature changes (such as rising from room temperature to 400 ℃) and are not easily cracked or peeled off due to thermal expansion and contraction.

• Application CasesIn the high-temperature baking silicon wafer experiment, a 10 inch ceramic coated aluminum disk can conduct multiple parallel experiments simultaneously, meeting the requirements of high-temperature and high-capacity stirring in the field of materials science.

5. Comprehensive performance advantages

• versatilityThe ceramic coated aluminum plate heating magnetic stirrer can integrate multiple stirring functions (such as 1-5 positions can be switched freely), and is compatible with oil and water baths. External sensors (such as PT1000) further enhance temperature control accuracy.

• safety designSome models are equipped with a thermal warning function (such as the Guoli Tian SA-2 model) to avoid the risk of burns; Leak proof shell design prevents liquid from seeping into internal components, enhancing equipment safety.

• industry recognitionCeramic coated aluminum discs have become the mainstream choice for laboratory heating magnetic stirrers, especially widely used in fields such as healthcare, environmental protection, chemical, and biotechnology.

We also offer various types of discs such as microcrystalline ceramic plates, stainless steel, and ceramic coated stainless steel. However, considering the comprehensive factors of price and practicality, we still prefer our customers to choose our cast aluminum discs.