- Home
- About Us
- Products
- News
- Download
- Send Inquiry
- Contact Us
About Us
Ningbo Xiayi is a high-tech manufacturer with 20 years of experience, producing precision shock absorber parts and automated equipment for global automotive OEMs.
Production Equipment
Production Equipment
Foundation of Intelligent Manufacturing
Ningbo Xiayi Company firmly holds the view that advanced production infrastructure serves as the
fundamental guarantee for consistent premium product quality. We operate a standardized modern
factory covering an area of over 5,000 square meters, equipped with integrated intelligent
production lines covering powder forming, sintering, precision machining, PTFE banding, piston
grooving and anti-corrosion surface treatment. The whole manufacturing process from raw powder input
to finished goods delivery is managed with refined standards. Supported by our self-developed
proprietary automated machinery, we form distinctive manufacturing strengths to support mass
high-precision production of sintered components, sealing accessories and precision structural
parts.
Four Core Equipment Groups for Key Manufacturing Processes
High-Density Powder Metallurgy & Sintering Lines
Multiple large-tonnage automatic powder compacting presses and continuous mesh belt sintering furnaces are deployed for high-pressure integrated forming and constant-temperature densification sintering of alloy powder. The equipment produces sintered parts with density above 6.8g/cm³, featuring uniform internal metallographic structure and consistent mechanical performance. It provides reliable blanks for pistons, rod guide, valve seats and other sintered components, laying a solid foundation for outstanding wear resistance and self-lubricating properties.
CNC Precision Machining Centers
Full production lines are equipped with CNC turning and milling composite centers for precision processing of piston rods, guide tubes, shock absorber brackets, spring seats and other structural components. The equipment stably maintains strict dimensional tolerance of ±0.005mm, fully complying with OEM assembly precision standards. It eliminates assembly clearance deviation and abnormal vibration noise during operation, meeting high-standard matching requirements for suspension systems of passenger cars, commercial vehicles and motorcycles.
Self-Developed Patented Automated Equipment
Based on years of R&D experience in shock absorber components, we independently developed and own patents for automatic PTFE banding machines and precision grooving machines, delivering customized processing solutions exclusively for shock absorber pistons. The automatic banding technology produces low-friction and wear-resistant piston assemblies, greatly stabilizing shock absorber damping performance and extending the overall service life of vehicle suspensions. These self-designed machines support high-efficiency assembly line production for internal manufacturing, and we also supply customized complete intelligent production lines to external manufacturers.
Integrated Surface Treatment Production Lines
We build full in-house automated surface treatment lines covering steam heat treatment, black oxide finishing and galvanizing processes. Components processed with standardized surface treatment achieve stable hardness ranging from HRB 60 to 100. The compact anti-corrosion surface layer resists erosion from muddy water, salt spray and alternating high-low temperature environments, adapting to long-term bumpy driving and all-weather harsh chassis working conditions, and significantly reducing failure risks caused by rust and abrasion.
Closed-Loop Full-Process Manufacturing Advantages
All types of professional production equipment are connected and matched to realize seamless
operation of powder metallurgy forming, precision cutting, piston banding and anti-corrosion
treatment. Combined with our three-level quality control system including front-end IQC raw material
inspection, mid-stream IPQC online monitoring and final laboratory comprehensive testing, we form a
closed-loop system integrating manufacturing and quality inspection. Supported by large-scale
factory space and intelligent equipment matrix, we reach an annual output of 50 million core shock
absorber pistons, balancing large-volume delivery capacity and micron-level precision manufacturing
standards. We deliver stable OEM supply support for global Tier 2 and Tier 3 automotive suppliers.
