Quality Inspection

There are 15 steps of the whole quality inspection process of injector nozzle, which include the selection of raw material, the inspection during production and inspection of finished products. In these 15 steps, one step missed can cause the bad quality or failure production, therefore, every process has specific workers to responsible, and that finally made our professional production team.


Here are some description of liwei injector nozzles’ produce processes: 

1. Inspect raw materials and make backup of raw materials test report;

2. Cutting raw materials with blanking machine;

3. Inspect raw material’s cutting diameter and length;

4. Forging and forming processing on the raw materials;

5. Inspectors conduct the all kinds of inspections of forming blank;

6. Remove the blank scrap ;

7. Blast the surface of the blank;

8. Conduct surface treatment inspection after sandblasting;

9. Perform blank machining;

10. Process injector nozzle’s body seal threading;

11. Process nozzle body connection threading;

12. Process nozzle’s hole;

13. Inspector conducts general inspection;

14. Install the injector nozzle;

15. The packing workshop finish product packaging.

Before sending out of the factory, the finished nozzles still need to undergone through three inspections—full inspection, random inspection, and batch inspection, different brands of test benches are used to test the same injector nozzle for a total of no less than three times.

Apart from above, injector nozzle is one of the most important running parts, it is also one of parts with the highest damage rate, even tiny particles can cause failure of nozzle and even entire components. So it is important to make sure the whole produce process and installation and its working place are dust-free.