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Identification and detection of steel plate spring and suspension

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Identification and detection of steel plate spring and suspension

Release date2015-05-13 Author Click

The steel pin and the hanging ear pin are the important parts of the leaf spring and the frame connection, the front end is connected with the frame by the steel plate pin and the hanging ear, the rear end is connected with the hanging pin and the rear hanging ear by the steel plate pin, And fixed with a locking screw. Steel pin and hanging pin is a cylinder of the long axis, the center of the pin with oil, the outer end is equipped with grease nipple for butter lubrication pins and bushings.

     The detection method of the steel plate spring pin and the hanging ear pin is as follows:

     1) Check the appearance of the pin with a visual or 5-10 magnifying glass, and pay attention to whether or not the pin oil passage of the lubricating oil hole communicates with the thread. Pin inspection by magnetic inspection should be no cracks, after the demagnetization test.

     2) when measuring hardness, with V-shaped support with the test site from the end surface 20-25, the test after the indentation should be trimmed.

     3) The outer diameter of the pin is measured with a micrometer.

     4) surface roughness with standard parts or standard sample comparison check.

     5) external thread with a comprehensive ring and the card gauge test.


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