ABOUT US

Zhejiang Jifeilong Instrument Technology Co., LTD.
(formerly Yueqing Feilong Instrument Factory)

Established in September 1999 and located at the Oujiang Port of Wenzhou City, Zhejiang Jifeilong Instrument Technology Co., LTD specializes in integrated manufacturing and sales of various electrical switches, shafts, plastic products, and hardware components. The company possesses complete production, processing, and grinding departments to deliver high-quality parts that serve multiple industries including home appliances, solenoid valves, electronics, automobiles, filtration equipment, and more.

422

The company was established in

4⁺

Industry experience

210^w

Registered capital

208⁺

Cooperative clients

Product center

Mainly engaged in the integrated manufacturing and sales of various electrical switches, shafts, plastic products and hardware components.

Pins and shafts for molded case circuit breakers

Aluminum blind rivets for molded case circuit breakers

Molded case circuit breaker rivets

Custom Rivets for Miniature Circuit Breakers

Miniature circuit breaker rivets

Rivets for miniature circuit breaker parts

Steel Turned Parts for Electronics: Industry Overview and Trends

Steel turned parts are an indispensable backbone of modern electronic manufacturing. These precision-engineered components form the mechanical and electromagnetic cores within countless consumer, industrial, and automotive electronic devices. With the explosive global growth in electronics spanning smartphones, IoT devices, automotive electronics, medical instrumentation, renewable energy systems, and beyond, the demand for highly reliable steel turned parts has skyrocketed in recent years.

Current Industry Landscape

The market for steel turned parts specific to the electronics sector is marked by stringent quality standards and exacting precision. Manufacturers must deliver parts with consistent dimensional tolerances often measured in microns, superior material properties to resist corrosion and electromagnetic interference, and efficient mass production capabilities. Key components such as iron cores, shafts, bushings, terminal posts, pins, and rivets serve critical functions in transformers, circuit breakers, solenoid valves, connectors, sensors, and more.

In recent years, companies like Zhejiang Jifeilong Instrument Technology Co., LTD have specialized in integrated production lines that encompass turning, grinding, surface finishing, and strict quality control. These integrated capabilities enable cost-effective innovating focusing on reducing defects, enhancing mechanical strength, and advancing electromagnetic performance tailored to the electronics industry's evolving needs.

Technological and Market Trends

Miniaturization: The shrinking footprint of electronic devices continuously drives the demand for smaller, more precise steel turned components without compromising strength or functionality.
Advanced Materials: Manufacturers are adopting specialty stainless steels, ferritic and silicon steels with optimized magnetic properties, and composite coatings to improve durability, heat resistance, and electromagnetic shielding.
Automation and Smart Manufacturing: CNC turning centers coupled with machine learning for quality prediction and automated inspection accelerate production with tighter tolerances and higher throughput.
Customization & OEM Solutions: Supply chains increasingly demand tailored steel parts to meet proprietary designs, rapid prototyping, and just-in-time delivery to fast-moving electronics OEMs.
Sustainability: Growing awareness promotes resource-efficient manufacturing, recycling shredded steel scrap, and minimizing waste through lean processes.

In-Depth Application Scenarios

Iron Cores and Bushings in Electronics

Iron cores, typically fabricated from silicon steel laminations or ferrite material, are integral to transformers, inductors, and EMI filters. They concentrate and channel magnetic flux, enabling efficient energy conversion and signal conditioning in power supplies and RF circuits. Bushings act as insulating sleeves around connectors or terminals, supporting mechanical stability and electrical isolation.

Precision Shafts and Terminal Posts

Shafts provide critical mechanical actuation in electromechanical components such as solenoid valves or miniature circuit breakers. Terminal posts ensure reliable electrical connectivity with high conductivity and corrosion resistance. In automotive electronics, these parts must withstand harsh vibration, thermal cycling, and moisture exposure while delivering high performance.

Cutting-Edge Developments

Embedded electronics in automotive and renewable energy sectors increasingly require steel parts with enhanced electromagnetic permeability and strength at elevated temperatures. Surface treatments such as electroplating, polishing, and corrosion-resistant coatings extend life cycles. Research into additive manufacturing hybridized with precision turning offers future promise for complex, integrated parts with internal channels or multi-material constructions.

Conclusion

The steel turned parts industry is a vital enabler for the electronics sector, driving innovations in hardware design and functionality. By continuously advancing manufacturing precision, material science, and delivery models, companies remain pivotal in supporting the rapid evolution of electronics worldwide. Manufacturers embracing automation, customization, and sustainability principles will remain competitive and sustain long-term growth in this dynamic market.

APPLICATIONS Field

It is widely used in fields such as home appliances,
solenoid valves, electronics, automobiles, and filtration equipment

Electronics

The Role of Iron Cores and Bushings in Electronics Iron cores and bushings play vital roles in electronic devices, contributing to efficient energy conversion, signal processing, and mechanical stability. Iron cores, commonly made of laminated silicon steel, ferrite, or powdered iron, are essential in inductive components like transformers, inductors, and chokes. Their high magnetic permeability concentrates magnetic flux, enabling efficient energy transfer in power supplies and voltage regulation circuits. In high-frequency applications, ferrite cores minimize eddy current losses, ensuring stable performance in switch-mode power supplies (SMPS), RF filters, and electromagnetic interference (EMI) suppression devices. Bushings, typically fabricated from insulating materials like ceramics, plastics, or composites, provide structural support and electrical isolation in electronic assemblies. They serve as mounting sleeves for connectors, terminals, or high-voltage components, preventing short circuits and mechanical stress. In high-power electronics, bushings also act as thermal barriers, dissipating heat while maintaining dielectric strength.

Automobile

The Role of Moving Iron Cores, Square Shafts, and Terminal Posts in Automotive Systems Moving iron cores, square shafts, and terminal posts are critical components in modern automotive electrical and electromechanical systems, ensuring precise control, efficient energy transfer, and reliable connectivity. The moving iron core, typically found in solenoids, relays, and fuel injectors, serves as the key actuating element. When energized by a coil, it generates linear motion to control fluid flow (e.g., in automatic transmission valves) or switch high-current circuits (e.g., starter relays). Its rapid response and durability are vital for engine management and transmission systems. Square shafts provide torque transmission in applications like throttle bodies, idle air control valves, and wiper mechanisms. Their anti-rotation design ensures precise angular positioning, while robust materials withstand vibration and wear in harsh underhood environments. Terminal posts enable secure electrical connections in battery systems, alternators, and control modules. Designed for high conductivity and corrosion resistance, they ensure reliable power distribution even under extreme temperature fluctuations. Together, these components optimize automotive performance—enhancing fuel efficiency, emission control, and drivability while meeting stringent reliability requirements. Their integration exemplifies the electromechanical sophistication in modern vehicle architectures.

Filtration equipment

The Role of Moving Iron Cores, Square Shafts and Terminal Posts in Filtration Equipment Moving iron cores, square shafts and terminal posts play vital roles in modern filtration systems, ensuring precise control, reliable mechanical operation and secure electrical connectivity in both industrial and commercial applications. The moving iron core, typically found in solenoid valves controlling filtration processes, actuates to regulate fluid flow during backwashing cycles or media replacement. Its rapid electromagnetic response enables automatic switching between filtration and cleaning modes in self-cleaning systems. The core's durable construction withstands constant exposure to process fluids while maintaining precise movement for accurate flow control. Square shafts provide torque transmission in rotary filtration systems and valve actuators. Their non-slip design ensures positive engagement with filter head mechanisms during rotation, enabling precise positioning for multi-port valves in sand filters or membrane systems. The shafts' robust construction resists corrosion from chemicals and abrasion from particulate matter in challenging filtration environments. Terminal posts establish critical electrical connections in automated filtration controls, linking sensors, controllers and solenoid valves. Their corrosion-resistant materials maintain conductivity despite moisture exposure, while secure clamping prevents loosening from system vibrations. In electrically enhanced filtration systems, they facilitate stable power delivery to electrodes or monitoring equipment. Together, these components optimize filtration efficiency by enabling: Automated process control via reliable solenoid actuation Precise mechanical positioning for optimal media contact Uninterrupted electrical signaling for system monitoring Their integration supports increasingly sophisticated filtration technologies in water treatment, industrial processing and HVAC applications, where reliability and precision are paramount for consistent filtration performance and reduced maintenance requirements.

Low-voltage electrical equipment

The Role of Moving Iron Cores, Square Shafts, and Terminal Posts in Circuit Breakers Moving iron cores, square shafts, and terminal posts are fundamental components in circuit breakers, ensuring reliable operation, precise mechanical control, and secure electrical connections in power distribution systems. The moving iron core serves as the key actuating element in magnetic trip units and solenoid-operated breakers. When excessive current flows through the coil, the core moves rapidly to trigger the trip mechanism, providing instantaneous protection against short circuits. Its high-permeability material ensures sensitive response to fault currents while withstanding repeated mechanical stresses during operation. Square shafts provide precise torque transmission in manual operating mechanisms and interlock systems. Their anti-rotation design guarantees accurate angular positioning of contacts during opening/closing operations, while robust construction maintains structural integrity under high mechanical stress. In modular breaker designs, square shafts enable synchronized operation of multiple poles for consistent performance. Terminal posts establish critical power connections between the breaker and electrical conductors. Featuring high-conductivity materials with corrosion-resistant plating, they ensure low-contact resistance and reliable current carrying capacity. Their clamping design maintains secure connections despite vibration or thermal cycling, preventing dangerous overheating in high-current applications. These components work synergistically to provide: Fast electromagnetic response for overcurrent protection Positive mechanical control for safe operation Stable electrical interfaces for power distribution Their optimized integration enables modern circuit breakers to achieve precise interruption performance, extended service life, and compliance with stringent safety standards across industrial, commercial, and residential applications.

Instrument

The Role of Moving Iron Cores, Square Shafts, and Terminal Posts in Instrumentation Devices Moving iron cores, square shafts, and terminal posts serve as critical components in various instrumentation devices, ensuring precise measurement, reliable signal transmission, and robust mechanical operation in industrial and laboratory applications. The moving iron core forms the essential sensing element in many analog instruments, particularly in moving-iron meters for current and voltage measurement. When exposed to magnetic fields generated by measured currents, the iron core moves proportionally to provide accurate deflection readings. Its ferromagnetic properties enable sensitive response to both AC and DC signals while maintaining stability across wide temperature ranges. In more advanced instruments, the core's position is precisely detected to provide digital readouts through transducer systems. Square shafts play a dual role in instrumentation, serving both as torque-transmitting elements in adjustment mechanisms and as precise positioning components in rotary switches and selectors. Their geometric design ensures positive engagement with control knobs and calibration tools, allowing technicians to make accurate adjustments without slippage. In environmental testing equipment, square shafts maintain alignment of moving parts even under continuous vibration or thermal expansion conditions. Terminal posts provide secure connection points in measurement circuits, designed to maintain signal integrity while facilitating easy installation. Gold-plated or corrosion-resistant terminals in precision instruments minimize contact resistance that could affect measurement accuracy. Their insulated designs prevent leakage currents in high-impedance circuits, while robust clamping mechanisms ensure stable connections for field instruments subjected to mechanical stress. These components collectively enable instrumentation devices to achieve: High measurement accuracy through sensitive iron-core movement Repeatable mechanical adjustments via positive shaft engagement Reliable signal paths with minimal connection losses Their integration supports the demanding requirements of modern test and measurement equipment, process control instruments, and laboratory analyzers where precision, durability, and measurement consistency are paramount. Advanced versions of these components now incorporate non-magnetic alloys and composite materials to meet the needs of specialized instrumentation operating in extreme environments or requiring non-interfering measurements

Household appliances

The Role of Iron Cores and Bushings in Household Appliances Iron cores and bushings are essential functional components in household appliances, serving critical roles in electromagnetic conduction, mechanical support, and noise reduction. Iron cores, typically made of laminated silicon steel, are widely used in transformers, motors, and solenoids. Their high magnetic permeability ensures efficient electromagnetic energy conversion while minimizing eddy current losses and heat generation. For example, in microwave oven transformers or compressor motors in air conditioners, iron cores enhance energy efficiency by optimizing magnetic flux transfer, contributing to overall appliance performance. Bushings, often constructed from metal or engineered plastics, act as supportive sleeves in rotating or sliding mechanisms, such as bearings and shafts. They reduce friction, absorb vibrations, and prevent wear between moving parts. In washing machines, nylon bushings are commonly used in drum shafts to dampen noise and extend operational lifespan. Additionally, bushings help maintain precise alignment, ensuring smooth and stable appliance operation.

Solenoid Valves

The Role of Iron Cores and Bushings in Solenoid Valves Iron cores and bushings are critical components in solenoid valves, ensuring efficient electromagnetic actuation, precise mechanical movement, and long-term reliability. The iron core (or plunger) is typically made of soft magnetic materials like laminated steel or ferrite, which concentrate magnetic flux when the solenoid coil is energized. This creates a strong electromagnetic force to pull or push the valve mechanism, enabling rapid and precise fluid flow control. In direct-acting valves, the iron core directly moves the sealing element, while in pilot-operated valves, it controls pressure differentials to actuate the main valve. The core’s material and design minimize hysteresis and eddy current losses, improving response time and energy efficiency. Bushings, often made of brass, stainless steel, or wear-resistant polymers, guide the iron core’s linear motion while reducing friction and wear. They ensure smooth operation, prevent metal-to-metal contact, and maintain alignment under repetitive cycling. In high-pressure or corrosive environments, bushings also act as protective sleeves, extending the valve’s service life.

WHY CHOOSE US
OUR ADVANTAGE

For every production link, from raw material procurement to finished product shipment, strict quality control is implemented.

Quick Response

24-Hour Online
Fast Delivery

Fast shipping within three to five days
Factory Supply

Fast and Efficient
Free Samples

Provide Free Samples
Professional Design

We Have Professional Teams
Support Customization

OEM/ODM is available

NEWS INFORMATION

The hard work in the past has brought about the current glorious career!

May-22-2025

What should be noted when purchasing hardware accessories?

The quality of hardware accessories: Nowadays, there are a large number of hardware accessories on the market, with varying qualities. When making a purchase, it is best to choose an established brand. Also, pay attention to whether their surfaces are smooth, if there is any rust, or if there is any damage, etc.

May-22-2025

What raw materials are used in the processing of hardware parts

Hardware parts processing is to process raw materials (stainless steel, copper, aluminum, iron.....) We use lathes, milling machines, drilling machines, grinding machines, polishing machines and other machinery to process various parts according to customers' drawings or samples.

May-22-2025

What should be noted when processing hardware parts?

Before the machinery starts working, check whether the moving parts have been lubricated with oil. Then start it and check if the clutch and brake are functioning properly. Let the machine tool run idle for 1 to 3 minutes. Do not operate the machinery if it malfunctions.

May-22-2025

On which machines is the processing of hardware parts more widely applied?

The processing of hardware parts is becoming increasingly common. It can be widely applied in many machinery and processing factories, such as cranes, forklifts, hoists, and even in daily life, such as gold locks, keys, and parts for locomotive maintenance.

OUR PARTNERS

With strict management, high-quality products and excellent services, it has won the trust and support of more than 100 enterprise customers in China.