Core Manufacturing Technologies of Electric Heating TubesElectric heating tubes, as an essential type of electric heating equipment, are widely used in household appliances, industrial heating equipment, chemical, pharmaceutical, and other fields. The manufacturing technology directly affects their performance, lifespan, and safety. This article will explore the core manufacturing technologies of electric heating tubes, including material selection, processing technology, insulation treatment, and quality control.
Material Selection
Material selection is a crucial factor determining the performance of electric heating tubes. Commonly used materials include:
1. Heating wire: Usually made of nickel-chromium alloy or iron-chromium-aluminum alloy, these materials have high resistivity, high-temperature strength, and good oxidation resistance.
2. Metal sheath: Common materials include stainless steel, copper, or aluminum. Stainless steel sheaths have advantages such as corrosion resistance and high-temperature resistance.
3. Filling material: High-purity magnesium oxide powder is commonly used as a filling material due to its excellent thermal conductivity and electrical insulation properties.
Processing Technology
The processing technology of electric heating tubes mainly includes the following steps:
1. Wire winding: The heating wire is wound into a specific shape according to design requirements to ensure uniform heating.
2. Sheathing: The wound heating wire is placed into the metal sheath.
3. Filling: High-purity magnesium oxide powder is filled between the heating wire and the metal sheath using a vibration filling process to ensure it is compact and uniform.
4. Sealing: The ends of the electric heating tube are sealed using welding or crimping methods to ensure tightness.
Insulation Treatment
Insulation treatment is crucial for ensuring the safety of electric heating tubes. Proper insulation design and treatment can effectively prevent leakage, short circuits, and other issues. Specific methods include:
1. Magnesium oxide powder insulation: Filling with high-purity magnesium oxide powder provides excellent electrical insulation properties.
2. Ceramic insulation: Using ceramic insulation materials at the ends of the electric heating tube further enhances insulation.
Quality Control
Strict quality control is required to ensure the quality of electric heating tubes. Key aspects include:
1. Material inspection: Strict quality inspection of heating wires, metal sheaths, and filling materials to ensure their performance meets requirements.
2. Process control: Strict control of various process parameters during manufacturing, such as wire winding tension, filling density, and sealing techniques.
3. Performance testing: Conducting electrical performance tests, withstand voltage tests, and insulation tests on finished electric heating tubes to ensure their performance is stable and reliable.
HUIZHOU TONGLI MACHINERY TECHNICAL CO., LTD., established in 1999, has a factory building area of over 6,000 square meters and a total area of 12,000 square meters. Located in Huiyang District, Huizhou City, Guangdong Province, it is a large professional manufacturer of electric heating equipment and a high-tech enterprise specializing in intelligent assembly in China.
Since 2002, the company’s products have been sold overseas, now reaching more than 60 countries, including the United States, India, Turkey, Brazil, Japan, South Korea, and Iran. The company boasts strong research and development capabilities, with many professionals in electric heating tube manufacturing and mechanical automation technology. The company integrates research and development, manufacturing, intelligent assembly, sales, and service.
Starting from a single automated machine in the early days, the company has developed into a fully automated intelligent assembly line today. We always adhere to the entrepreneurial tenet of taking customer satisfaction as our responsibility and market demand as our guide, continuing to learn and absorb advanced technologies from abroad. We understand that only through open cooperation and resource sharing can we achieve meaningful technological breakthroughs. By strengthening our technical team and enhancing our competitiveness, we can better serve our domestic and international customers. We look forward to cooperating with you for mutual benefit and shared success!
HUIZHOU TONGLI MACHINERY TECHNICAL CO., LTD., with its excellent technology, high-quality products, and comprehensive services, has won the trust and praise of numerous customers, becoming a leader in the industry. We look forward to working with more partners in the future to create a brighter future together.
