Electric heating tubes are devices that convert electrical energy into thermal energy, widely used in household appliances, industrial equipment, medical devices, and other fields. The core manufacturing technologies of electric heating tubes involve the comprehensive application of material selection, design processes, production equipment, and quality control.
Material Selection
The main materials for electric heating tubes include resistance wire, insulating materials, and sheath materials. Resistance wires typically use nickel-chromium alloy or iron-chromium-aluminum alloy, known for their excellent resistance performance and high-temperature stability. The insulating material is generally high-purity magnesium oxide powder, which has excellent thermal conductivity and electrical insulation properties. Sheath materials often use stainless steel or nickel-plated copper to ensure corrosion resistance and mechanical strength at high temperatures.
Design Process
The design of electric heating tubes must consider factors such as power, temperature distribution, and operating environment. First, appropriate resistance wire diameter and length are selected based on the power requirements and operating voltage to ensure that the electric heating tube can work within the specified power range. Secondly, the structural design of the electric heating tube must ensure uniform heat distribution to improve heating efficiency and extend service life. The design must also consider the working environment of the electric heating tube, such as the need for waterproof or explosion-proof features.
Production Equipment
The production process of electric heating tubes involves various automated equipment, including wire winding machines, filling machines, compressors, welding machines, and testing equipment. Wire winding machines are used to wind the resistance wire into a spiral shape to improve heating efficiency. Filling machines uniformly fill high-purity magnesium oxide powder between the sheath and the resistance wire to ensure insulation performance. Compressors compact the filling material to enhance the mechanical strength and thermal conductivity of the electric heating tube. Welding machines are responsible for firmly welding the terminal connections of the electric heating tube to ensure the reliability of the electrical connection. Finally, testing equipment performs rigorous tests on the finished products for electrical performance, withstand voltage, insulation, and other aspects to ensure product quality.
Quality Control
Quality control runs through the entire manufacturing process of electric heating tubes. From the inspection of raw materials to every step of the production process and the final inspection of finished products, strict standards are applied. First, resistance wires, magnesium oxide powder, and sheath materials are inspected for composition, purity, dimensions, and other aspects to ensure compliance with standards. During production, precise control and real-time monitoring by automated equipment ensure the accuracy and consistency of each process. Before leaving the factory, the finished products undergo multiple tests for electrical performance, withstand voltage, insulation, and lifespan to ensure that each electric heating tube meets design requirements.
Tongli Machinery offers a wide range of products, integrating research and development, production, and sales. It is currently a leading manufacturer of full sets of automated electric heating tube equipment in China. The company has passed ISO9000 and CE certifications, and some products have obtained patents. Tongli Machinery products not only supply the domestic market in large quantities but have also been successfully exported worldwide, gaining unanimous recognition. Through continuous technological innovation, quality improvement, and the perfection of after-sales service systems, Tongli Machinery Technology Co., Ltd. has become a brand enterprise in the electric heating tube equipment market.
Tongli Machinery is committed to providing customers with high-quality, high-efficiency automated production equipment, helping them achieve success in a competitive market. We sincerely welcome domestic and international customers to join us in creating a better future together.
