1. Customer needs
The customer has special requirements for key components in the fuel injection system and hopes to optimize system performance by introducing permanent magnet components. The accuracy is required to be within ±4mm, and the permanent magnet components must respond to instructions within the specified time to adapt to the high-speed operation of the engine. At the same time, they must work stably for a long time in a harsh high-temperature environment. The service life must not drop significantly within the specified time, and the intensity change of the magnetic field must be controlled within a very small range.
2. Solution customization
According to user needs, high-performance NdFeB permanent magnet materials are selected, and the high temperature resistance and corrosion resistance of the components are improved by adjusting the material structure. At the same time, the permanent magnet component structure is designed, and a multi-layer composite structure is adopted to combine permanent magnets with thermal conductivity and shock-absorbing materials to effectively isolate the effects of high temperature and vibration on permanent magnets. A linear drive solution based on permanent magnet force is designed according to the user component usage product. This integrated design not only improves the control accuracy but also reduces the system response time. After the magnetic simulation test calculation, feedback is given to the customer, and production begins after it is determined to meet the user’s demand standards.
3. Production
Advanced powder metallurgy process is used to prepare NdFeB permanent magnet materials. During the preparation process, parameters such as powder particle size, molding pressure and sintering temperature are strictly controlled to ensure the consistency of material performance. For the processing link, high-precision CNC machining center is used to finely process the permanent magnet components. The processed permanent magnet components are assembled with other components of the injection valve in a clean assembly workshop. During the assembly process, high-precision measuring instruments are used to calibrate the installation position of each component.
4. Quality control
During the production and assembly process of permanent magnet components, multiple quality monitoring processes are established. After each key process, such as material sintering, processing and molding, component assembly, etc., performance testing and dimensional measurement are carried out. Including resistance testing, hardness testing, surface finish inspection, etc. Use advanced non-destructive testing technology, such as ultrasonic flaw detection, magnetic particle flaw detection, etc., to check whether there are defects inside the permanent magnet components. At the same time, the sealing and firmness of each connection part in the assembly process are checked to ensure the reliability of the product.
5. Customer feedback
After comprehensive acceptance, customers are very satisfied with the effect of permanent magnet components in actual applications. In actual installation tests, machines using permanent magnet components have shown excellent performance. The accuracy and response speed fully meet the design requirements, and the engine can operate stably and efficiently under various working conditions. At the same time, the permanent magnet components have shown good stability in harsh engine environments. After a long period of operation tests, no signs of performance degradation have been found, making an important contribution to improving engine performance and ensuring reliability.
