We are a professional manufacturer of various electromagnets. The electromagnet industry has many specialized terms and jargon. To help users better understand electromagnet knowledge, SF electromagnet experts have compiled common terms and questions related to electromagnet. If you have any doubts about customized electromagnet, please contact our experts.
Electromagnet Basic Concepts
1: What is an electromagnet?
An electromagnet is a type of magnet where the magnetic field is generated by an electric current passing through a coil of wire.
2: What is a solenoid?
A solenoid is a coil of wire wound in a helix, often with a ferromagnetic core, that generates a magnetic field when energized.
3: What is magnetic flux?
Magnetic flux (Φ) is the measure of the total magnetic field passing through a given area, measured in Weber (Wb).
4: What is magnetic field strength (H)?
Magnetic field strength, measured in Ampere-turns/meter (A/m), represents the intensity of a magnetic field in a material.
5: What is magnetic flux density (B)?
Magnetic flux density, measured in Tesla (T), is the amount of magnetic flux per unit area.
Electromagnet Design Parameters
6: What are ampere-turns (NI)?
Ampere-turns is the product of the current (I) in amperes and the number of turns (N) in the coil, determining the magnetomotive force (MMF).
7: What is coercivity?
Coercivity is the resistance of a magnetic material to demagnetization, measured in Oersteds (Oe).
8: What is hysteresis?
Hysteresis is the lag between changes in magnetic flux density (B) and the magnetic field strength (H), causing energy loss in ferromagnetic materials.
9: What is permeability (μ)?
Permeability is a material’s ability to support magnetic flux, defined as μ = B/H.
10: What is reluctance?
Reluctance is the opposition to magnetic flux in a magnetic circuit, analogous to resistance in an electrical circuit.
Electromagnet Materials
11: What is soft magnetic material?
Soft magnetic materials (e.g., iron, silicon steel) have low coercivity and high permeability, ideal for electromagnet cores.
12: What is hard magnetic material?
Hard magnetic materials (e.g., neodymium, AlNiCo) have high coercivity, used for permanent magnets.
13: What is laminated core?
A core made of thin insulated steel layers to reduce eddy current losses.
14: What is ferrite?
Ferrite is a ceramic compound with magnetic properties, used in high-frequency applications.
15: What is eddy current?
Eddy currents are loops of electrical current induced in conductive materials by changing magnetic fields, causing energy loss.
Electromagnet Performance Metrics
16: What is pull force?
Pull force is the maximum force an electromagnet can exert on a ferromagnetic object, measured in Newtons (N).
17: What is hold force?
Hold force is the force required to detach an object from an energized electromagnet.
18: What is duty cycle?
Duty cycle is the ratio of ON time to total cycle time, expressed as a percentage (e.g., 60% duty cycle).
19: What is thermal runaway?
Thermal runaway occurs when excessive current causes temperature rise, leading to insulation failure.
20: What is inrush current?
Inrush current is the temporary surge of current when an electromagnet is first energized.
Customized consulting and technical support portal：
Contact: Shany Xu
Email: shanyxu@hotmail.com
About SF electromagnets factory
Shengfeng Electromagnet Co., Ltd. was established in 2015 and is located in the Xiansha Industrial Park with beautiful scenery and convenient transportation. The company covers an area of 16000 square meters and has modern production plants, advanced production equipment and a high-quality technical team. Since its establishment, we have always adhered to the corporate philosophy of “innovation, quality, and service”, focusing on the research and development and production of electromagnets, constantly promoting product upgrades and technological progress, and providing customers with the best quality products and services.
Why choose SF electromagnet
HIGH END QUALITY:As the best solenoid electromagnet manufacturer in china, our QC team will ensure every single product you receive are best quality. We have professional quality testing machine.
PRODUCT DESIGN:Our sampling department has complete process of making drawings into reality. We also improve your product design based on our years of working experience.Tell us what you think.
STABLE DELIVERY TIME:As the best electromagnet manufacturer & supplier,we have sufficient manufacturing capacity, big orders won’t beat us, we can still deliver the order for you in time.
BEST PRICE:We are source factory of electromagnet and the best solenoid manufacturer in China, that’s why we can provide high quality bags with best price.
PRECISE MANAGEMENT:Nothing can be achieved if we don’t implement precise management. We are a company with complete management system.
7-24 SERVICE:As the best solenoid manufacturer, 24-7 immediate response: We’ll receive your feedback to make us a better supplier. Contact WhatsApp +86 18902611680
FAQs of electromagnet
We are a Chinese top electromagnet manufacturer and our factory is located in Dongguan. Welcome to visit our factory!
We pecialize in the design and production of high quality electromagnet,solenoid valve,such as rotary solenoid, bistable solenoids, latching solenoids, open frame solenoids, tubular solenoids, self-holding solenoid
•Of course, usually we will provide free samples, and you only need to cover the freight. For custom electromagnet samples, pls send your requirements to us for checking the sample cost.
• It takes about 7 days for sample production.
Yes, we provide free design services, structural design and simple graphic design.
Sure. We can do any electromagnet with your design. Now we open a ODM solenoid which is for small quantity from 100pc to 500pc,but you can still have your own logo.
Depending on the order quantity and production details, it will take about 15 to 20 days.
Always a pre-production sample before mass production; Always final Inspection before shipment
• Power,usage,size, material, quantity, shipping destination, etc.
• You can also just tell us your requirements and we will recommend products to you.
• By sea, by air or by express.
• If you have your own freight forwarder in China, it is the ex-factory or FOB price.
•CFR or CIF, etc., if you need us to ship on your behalf.
• DDP and DDU can also be used.
• More choices, we will consider your choices.
• The price is determined by the quantity, material, processing method, size and other factors. In addition, due to our continuous
technological innovation, the prices of some of our products are extremely competitive, please contact us to quote.
