The role of the railway fastening system is undeniable, but in order to ensure the quality of the railway fastening system and to play an ideal role in the application, in addition to being extra cautious in the production process, a comprehensive quality inspection is also required. As an important part of the railway fastening system, rail clips also require quality inspection.
2. External dimensions. The external dimensions of rail clips are tested with measuring moulds. Rail clips can be freely placed in the testing moulds as qualified. If the inspection fails, a second sampling re-inspection can be carried out. Those that pass the secondary sampling inspection are qualified products. Otherwise, production should be stopped immediately, and the cause should be resolved after the cause is found.
3. Hardness. Use a Rockwell hardness tester with a reading accuracy of HRC 0.5 to test the hardness of rail clips. The average hardness is within the range of HRC 42-47.
4. Withholding pressure detection, rail clips's withholding pressure detection should be carried out on the test bench, when the withholding toe displacement is 11mm, the withholding pressure is qualified within the range of 8330N-9310N. For batches with unqualified buckle pressure, secondary heat treatment is allowed, but they must pass a comprehensive quality inspection to be considered qualified.
In general, in order to ensure the overall quality and application effect of the railway fastening system, it is necessary to ensure that the quality of rail clips is qualified. At the same time, we also hope that users can use the detection methods provided above to identify the quality of rail clips. Avoid buying rail clips of substandard quality. Of course, if you still don’t know how to identify the quality of rail clips, you can also directly contact Kingrail. The railway fastening system produced and provided by Kingrail Parts is qualified in quality and reasonable in price. You can buy and apply with confidence.