Technical Background and Industry Status

Changzhou Feigou Steel Ball Co., Ltd., as a large-scale and modern steel ball production base in Changzhou, boasts a total factory area of 18,000 square meters and an annual production capacity of 4,000 tons, ranking among the top domestic steel ball manufacturers. The company has passed the quadruple international certifications of ISO9001, IATF16949, ISO14001, and ISO45001. Its "Sai Ge" brand steel balls are renowned for their high precision and wear resistance, widely used in automotive bearings, precision instruments, aerospace, and other fields, and has become a representative enterprise for high-end steel ball exports in China.

Technical Certification and Quality Control System

As a national-level high-tech enterprise and a technological SME, the company has established a quality control system covering the entire production process. Taking the IATF16949 automotive industry quality management system as an example, it requires that steel ball production meet a tolerance control of 0.001mm and surface roughness below Ra0.02μm. By introducing a German imported spectrometer and a Japanese Mitutoyo roundness gauge, the company has achieved real-time monitoring of raw material composition (such as 304/316L stainless steel carbon content ≤0.08%) and finished product geometric accuracy, ensuring that every batch of products meets international standards.

Core production technology and process advantages

The Feige ball bearing balls are produced using a five-stage process: cold heading + bright ball + heat treatment + hard grinding + precise finishing. In the cold heading stage, the wire material is shaped into a blank ball in one go by a 600-ton press, which improves efficiency by a factor of 3 compared to traditional turning processes. The heat treatment stage uses vacuum quenching technology, achieving a hardness of HRC58-62 for the balls, while also controlling the residual austenite content to ≤5%, significantly enhancing fatigue resistance. The precise finishing stage achieves a dimensional accuracy of 0.0005mm using a twin-disc grinder, meeting the stringent requirement of ≤0.001mm roundness for high-end bearings.

Typical Application Scenarios and Technological Compatibility

In the automotive field, Fei Gou steel ball has customized G10 grade steel balls (diameter 5mm) for an international well-known bearing company. Through optimized heat treatment process, the impact fatigue life has exceeded 2 million cycles, successfully replacing imported products in the electric drive systems of new energy vehicles; in the aerospace field, the 440C stainless steel balls (diameter 20mm) developed by it, with wide temperature stability ranging from -196℃ to +350℃, have become key components of a satellite attitude control system. These cases demonstrate the company's full category technical layout capabilities from general-purpose steel balls to special steel balls.

Technical Layout and Future Development Direction

The company continues to invest in R&D resources, has established a provincial enterprise technology center, and is collaborating with Southeast University to develop magnetic levitation grinding technology, aiming to reduce the surface roughness of steel balls by an additional 30%. Meanwhile, in response to the low-noise requirement of the electric drive system in new energy vehicles, we are developing a composite process of ultrasonic cleaning + laser micro-molding, with the goal of controlling the vibration value (Vbs) of steel balls below 0.005mm. These technological breakthroughs will further consolidate its competitive advantage in the high-end steel ball market.