Electrical Pure Iron
Taiyuan Xinye Taiming Manufacturing and Processing Co., Ltd. is located in Taiyuan City, Shanxi Province, covering an area of 3000 square meters, with a number of advanced production lines, equipped with precision processing equipment and efficient production technology. Company existing staff of 50 people, including technical staff, production workers and management team, they experienced, skilled, can guarantee the stability of the production process and product quality and reliable.
1. Rich Experience
Taiyuan Xinye Taiming Manufacturing and Processing Co., Ltd. was established in October 2022. As a professional engaged in the pure iron processing and sales of enterprises, we are committed to providing customers with high quality pure iron products and excellent service.
2. Reliable Product Quality
The company has advanced production equipment and technical force, which can efficiently and accurately process all kinds of pure iron products. We not only provide standard specifications of pure iron products, but also can be customized according to the specific needs of customers to meet the individual requirements of different customers.
3. Professional Technical Team
Company existing staff of 50 people, including technical staff, production workers and management team, they experienced, skilled, can guarantee the stability of the production process and product quality and reliable.
4. Strong Production Capacity
Customer satisfaction is our eternal pursuit. We always adhere to the customer-centered service concept and strive to provide customers with high-quality products and excellent service. We have a specialized customer service department, responsible for handling customer inquiries, complaints and after-sales service, to ensure that customer problems can be solved in a timely and effective manner.
Electrical pure iron, also known as electrolytic iron or high-purity iron, is a type of iron that has been refined to an extremely high level of purity, typically exceeding 99.9% iron content. The low impurity levels in electrical pure iron make it highly desirable for applications where high-purity materials are required, such as in electronics and electrical equipment. Electrical pure iron has excellent magnetic properties, including high permeability and low hysteresis losses, making it suitable for use in transformers, motors, and other electromagnetic devices.
Advantages of Electrical Pure Iron
High Purity: The main chemical component of electrical pure iron is iron (Fe), with a content usually between 99.50% and 99.90%. The impurity levels are extremely low, which ensures its excellent physical and chemical properties.
Electromagnetic Performance: Electrical pure iron exhibits low coercivity (Hc), high permeability (μ), and high saturation magnetization (Bs), making it perform well in electromagnetic devices. Its magnetic stability and lack of magnetic aging make it an ideal material for manufacturing electromagnetic devices such as electromagnets and relays.
Soft Texture and High Toughness: Compared to other metals, electrical pure iron has a softer texture and higher toughness, which makes it easier to shape during processing and suitable for various complex shapes and sizes.
Good Ductility: Electrical pure iron has good ductility, allowing it to be stretched into fine filaments or pressed into thin sheets without easily breaking.
Not Easy to Rust: Electrical pure iron is less likely to rust in humid air than standard iron, thanks to its high purity and dense metal structure. Additionally, in cold concentrated sulfuric acid, electrical pure iron can undergo passivation, forming a dense oxide protective film that further improves its corrosion resistance.
Multi-Domain Application: Due to the advantages mentioned above, electrical pure iron has a wide range of applications across various fields. For example, in industrial electromagnetic equipment, it is used as the core material in magnetic beneficiation machines, magnetic separators, and other equipment. In the field of electronic instruments and meters, it is used to manufacture instruments such as magnetometers and flux meters. In medical equipment, it is used in high-end devices such as magnetic resonance imaging machines.
Environmentally Friendly Material: Electrical pure iron, as a metal material, has good recyclability and reusability. Recycling and processing waste electrical pure iron helps reduce environmental pollution and resource waste, aligning with the principles of environmental protection and sustainable development.
Types of Electrical Pure Iron
Wire Rod Coils of Iron :The iron wire rod inductor, a fundamental component in electrical and electronic circuits, plays a pivotal role in managing and shaping alternating current (AC) signals. Constructed from iron wire rods, these inductors leverage the unique properties of iron to enhance inductance, which measures the ability to store energy in the form of a magnetic field. Designed to resist changes in electric current flowing through it, the iron wire rod inductor generates an opposing electromotive force (EMF) in accordance with Faraday's Law of Induction. This characteristic makes it invaluable in applications requiring filtering, signal processing, and energy storage.
Electromagnetic Pure Iron Bar: Electromagnet core iron rods, as fundamental elements in the construction of electromagnets, play a pivotal role in various industries and applications. Made from high-quality magnetic materials, such as soft iron or specialized electrical steel, these rods serve as conduits for magnetic flux, enabling the conversion of electrical energy into mechanical force. The development of electromagnet core iron rods has seen significant advancements, particularly in material science and manufacturing techniques. Materials with improved magnetic permeability and reduced hysteresis losses have been developed, leading to more efficient and powerful electromagnets. These advancements have enabled the creation of electromagnets with faster response times, higher force output, and longer service lives.
Iron Sheet: The production of cold-rolled iron sheet (CRS) is a meticulous process involving multiple stages to transform hot-rolled steel into a smoother, thinner, and more dimensionally accurate product. It begins with the procurement of hot-rolled steel coils, which have undergone initial rolling at high temperatures to impart basic shape and dimensions. These coils are then fed into a pickling line, where they undergo chemical treatment to remove scale, rust, and other impurities from the surface. This cleaning step is crucial for achieving a clean and even surface for subsequent cold rolling.
Electrolytic Sheets: High-purity iron electrolytic sheets, though specialized and less common in the metals industry, are employed in niche applications requiring extreme purity and unique properties. While electrolytic processes are more commonly associated with copper and other metals, achieving high-purity iron through electrolysis is complex but rewarding. These sheets find applications in fields where even trace impurities can significantly impact performance. For instance, in the electronics industry, they may be used as substrates or components in specialized devices requiring high magnetic permeability or low electrical conductivity.
Application of Electrical Pure Iron
Application of Electrical Pure Iron
1.Electromagnetic Relays: Electrical pure iron is used as key components, such as battery cells and armature yokes, in electromagnetic relays due to its excellent magnetic conductivity.
2.Electric Motors and Appliances: Electrical pure iron is used as iron core material in devices such as DC motors, electroacoustics, solenoid valves, and magnetic separators to improve the electromagnetic efficiency and performance of the equipment.
3.Instrumentation: Electrical pure iron is also widely used in the magnetic components of instruments and meters to ensure their accuracy and stability.
Automotive Industry
1.Automotive Components: Electrical pure iron is used in various parts of automotive manufacturing, such as engine components and transmission system components, due to its good strength and corrosion resistance.
2.Brakes and Clutches: In automotive brakes and clutches, electrical pure iron also plays an important role in ensuring the safety and reliability of the vehicle.
Aerospace Field
1.Structural Components: Electrical pure iron is used in structural components of aerospace vehicles, such as aircraft fuselages and wing beams, due to its high strength and lightweight characteristics.
2.Instrumentation: In aviation instruments, electrical pure iron is also used as magnetic components to ensure accurate measurement.
Construction and Decoration Industry
1.Indoor Decoration: Electrical pure iron can be used for indoor partitions, ceilings, wall coverings, and other decorative projects, providing unique visual effects and textures.
2.Outdoor Components: For outdoor use, electrical pure iron can be employed in building components such as stairs, doors, and windows, showcasing a modern industrial style.
Energy and Chemical Industry
1.Energy Equipment: In energy facilities such as nuclear power plants and thermal power plants, electrical pure iron is used to manufacture various equipment components, including reactor vessels and steam generators.
2.Chemical Equipment: Electrical pure iron is widely used in chemical equipment such as reactors and storage tanks due to its strong corrosion resistance.
Other Special Purposes
1.High Vacuum Equipment: In high vacuum high-frequency tubes, cesium beam tubes, and other equipment, electrical pure iron is used as sealing magnetic material to ensure the vacuum degree and stability of the equipment.
2.Scientific Research Experiments: In scientific research, electrical pure iron can be used to make various experimental devices and samples to meet experimental needs.
Iron (Fe)
The primary component of electrical pure iron, typically comprising over 99.9% of the material. The high purity of the iron is achieved through the electrorefining process, which removes most impurities.
Impurities
The impurity levels in electrical pure iron are extremely low, usually less than 0.1% in total. Common impurities that may be present in trace amounts include:
● Carbon (C)
● Silicon (Si)
● Sulfur (S)
● Phosphorus (P)
● Copper (Cu)
● Nickel (Ni)
The low impurity levels in electrical pure iron are crucial for its exceptional magnetic, electrical, and thermal properties, as well as its corrosion resistance. The high purity is achieved through the electrorefining process, which selectively deposits the pure iron onto the cathode while leaving the impurities behind in the electrolyte solution.
Production Process of Electrical Pure Iron
Material Selection
Electrical pure iron is primarily made from high magnetic permeability and low-loss materials, such as pure iron or silicon steel sheets. These materials are chosen for their excellent magnetic properties, which minimize eddy current and hysteresis losses.
Rolling Process
The raw materials are processed into thin sheets through cold rolling or hot rolling. Cold rolling enhances surface finish and dimensional accuracy, while hot rolling improves mechanical properties.
Cutting
The rolled sheets are cut into specific sizes and shapes according to design specifications. Precision cutting methods, such as laser cutting and mechanical shearing, ensure accuracy.
Stacking and Assembly
The cut sheets are stacked in a precise order to form the pure iron core. Controlling the flatness and gaps between sheets minimizes air gaps in the magnetic circuit, enhancing magnetic performance.
Annealing
The assembled pure iron undergoes annealing in a hydrogen-protected atmosphere at 700-800°C. This process relieves internal stresses, increases magnetic permeability, and reduces iron loss.
Surface Treatment
Post-annealing, the pure iron surfaces receive insulation treatment, typically through coating or oxidation. This prevents inter-sheet short circuits and reduces eddy current losses.
Inspection and Testing
The finished pure iron is subjected to rigorous inspection and testing to ensure it meets design specifications and performance standards. This includes dimensional measurements, magnetic performance tests, and mechanical strength assessments.
Vacuum Heat Treatment of Electrical Pure Iron
Currently, there are two methods for smelting electrical pure iron in China: the ordinary furnace and the vacuum furnace. Due to the high carbon content in electrical pure iron smelted in ordinary furnaces, even if the parts undergo vacuum heat treatment, their magnetic properties often fail to meet technical requirements. In contrast, electrical pure iron smelted in vacuum furnaces has a lower carbon content, resulting in magnetic properties that significantly surpass the technical standards after vacuum heat treatment. Even when using raw materials in their supply state (annealed), some of their magnetic properties can meet technical requirements. This advancement creates favorable conditions for the design and processing of electromagnetic parts.
With improvements in electrical pure iron smelting technology, the carbon content has decreased significantly, greatly enhancing the magnetic properties of the materials in various states. Since vacuum furnace-smelted electrical pure iron has largely replaced that smelted in ordinary furnaces, there have been no issues with parts being affected by unqualified magnetic properties of raw materials. Moreover, the magnetic properties of the parts have also improved, particularly in terms of coercive force and permeability.
There are three heat treatment methods for electrical pure iron:
1.Artificial Aging
2.High-Temperature Purification Annealing
3.Stress Relief Annealing
Cold working induces various crystal defects (dislocations, stacking faults, etc.) in pure iron and creates internal stress, which increases the difficulty of domain wall movement and decreases the values of coercive force (Hc) and permeability (μ). To eliminate these adverse effects, stress relief annealing or recrystallization annealing can be performed. High annealing temperatures with coarse grains are favorable for magnetic properties. Therefore, the maximum temperature without phase transformation is typically used for stress relief annealing to avoid grain refinement during cooling. The commonly used recrystallization annealing process for eliminating cold working stress in pure iron involves the following steps: charging below 600°C, heating up to 800°C in the furnace, slowly raising the temperature to 830-890°C, holding for 4 hours, then cooling to 700°C at a rate of no more than 50°C/hour, and finally removing from the furnace when cooled to 500°C. The entire annealing process is conducted in hydrogen or a vacuum.
Physical Properties of Electrical Pure Iron
Electrical pure iron has a silvery-gray metallic appearance. Its density is approximately 7.87 g/cm³ (grams per cubic centimeter). The melting point of electrical pure iron is around 1,538°C (2,800°F), while its boiling point is approximately 2,862°C (5,184°F). The coefficient of thermal expansion for electrical pure iron is about 11.8 × 10^-6 per °C. Its thermal conductivity is around 80.2 W/(m·K) (watts per meter-kelvin), and its electrical resistivity is approximately 9.71 × 10^-8 Ω·m (ohm-meters). These physical properties make electrical pure iron a highly desirable material for various applications, particularly in the electrical, electromagnetic, and industrial sectors, where its high purity, magnetic characteristics, and electrical conductivity are crucial.
Ultimate FAQ Guide to Electrical Pure Iron
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