Products Introduction
In 2025, the global manufacturing industry is seeing explosive growth in three major areas: new energy vehicles, smart grids, and Industry 4.0. As the "nerve nodes of industry", relays are in growing demand. According to market research, the global relay market is expected to exceed 12 billion US dollars in 2025, with AC relays accounting for over 60%. In the electromagnetic control system of relays, the DT4C Relay Iron Core Cold Forging is a core part that decides the performance limit. Its material selection and manufacturing process directly affect the suction stability, energy consumption, and service life of relays.
Under this situation, the DT4C AC Relay Iron Core, with the excellent magnetic conductivity of DT4C electrical pure iron and the innovative use of cold forging technology, has become the key to breaking technical bottlenecks in the industry. This article will analyze how the DT4C AC relay iron core reshapes the competitive pattern of the relay industry from three aspects: industry trends, technical principles, and product advantages.
Cold Forging Technology
Facing industry pain points, the rise of cold forging technology has brought revolutionary breakthroughs to the manufacturing of DT4C Iron Core. Cold forging refers to the process of applying pressure to metal billets at room temperature to cause plastic deformation. Compared with traditional processes, cold forging has three irreplaceable advantages:
1. Leap in Material Utilization
Cold forging realizes one-time forming through die cavity precision stamping, and the material utilization rate is increased from 40% in the cutting process to more than 90%. Taking a certain type of Cold Forging Relay Core as an example, the cold forging process can reduce 3 processing procedures, and the raw material cost is cut by 40%.
2. Strengthening of Mechanical Properties
During the cold forging process, the metal flow lines are completely retained, and the tensile strength and fatigue strength of the Iron Core Relay Part are increased by more than 30%. A third-party test showed that the cold-forged iron core had no obvious deformation after 10 million suction tests, while the traditional process product could only withstand 3 million times.
3. Breakthrough in Dimensional Accuracy
The dimensional tolerance of the DT4C AC Relay Iron Core can reach ±0.02mm, and the surface roughness Ra≤0.8μm, which perfectly meets the zero gap assembly requirements of micro relays.

Providing Core Support
1. Process Closed Loop
We carefully choose DT4C Iron Core raw materials and build our own cold forging production line to realize the whole process control of "material inspection, cold forging forming, surface treatment, performance testing". Each batch of products must pass the dual inspection of the coordinate measuring machine to ensure 100% qualification.
2. Customization Capability
To meet the differentiated needs of customers, we can provide customized development of "non-standard iron cores". For example:
The micro DT4C Relay Iron Core Cold Forging developed for smart home customers realizes "one-time forming of rod special-shaped flange" through a cold forging process, which reduces 3 processes compared with traditional processes and shortens the delivery cycle to 7 days.
3. Cost Advantage
As a manufacturer with its own factories, our DT4C Iron Core can achieve "mass production factory price", and the cost is 15% lower than that of the trader channel. At the same time, the standard delivery time of 7-15 days and free sample service help customers quickly check product adaptability.

Our Product
In the field of relay iron core manufacturing, our company's Cold Forging Relay Core uses advanced cold forging technology to ensure high performance and reliability. The DT4C iron core is designed and manufactured strictly according to industry standards to meet different customer needs.
Product Features: Uses quality materials for good magnetic and mechanical properties. Achieves precise shaping through cold forging, improving product consistency and reliability. Optimizes DT4C Relay Iron Core Cold Forging design based on relay working characteristics to improve efficiency and stability. Suitable for various types of relays, including industrial automation, smart homes, and new energy vehicles.


