How to deal with the compression spring machine to strengthen the circular spring, due to its spiral geometry, it is more difficult to strengthen than the flat surface of the leaf spring. In addition, it is necessary to strictly evaluate the strengthening effect of the circular spring cross section to fully understand The resistance of the round spring against fatigue fracture.
The round springs are individually sent to the shot blasting room through a continuous conveyor chain system. A set of parallel roller tables are installed in the shot blasting room. While strengthening, the roller tables keep rolling, driving the round springs to rotate while moving forward. The passing method allows the high-speed pill flow to pass between the various rings of the circular spring and hit the metal surface of the inner ring, where the stress of the circular spring is most concentrated.
For applications with high productivity requirements, you can choose a strengthening equipment that can spray two round springs at the same time. The latest research and development result is to combine multiple nozzles on the basis of the original shot blasting equipment to target specific areas of the round spring (Stress concentration to please) Shot peening with more targeted and concentrated firepower. ??
leaf spring reinforcement
A continuous pass-through shot blasting equipment can be used to strengthen the leaf springs one by one, so that the geometric concave surface of the leaf spring is exposed to the high-speed shot flow. The typical model of the computer spring machine includes a throwing head for the ejection plate On the top of the spring, install a polishing head on the side, and spray the left and right sides of the leaf spring at the same time.
The passing speed of this standard leaf spring strengthening equipment is 10 feet per minute. If a higher production speed is required, the number of throwing heads can be increased and the motor frequency can be adjusted. Under working conditions, the leaf spring will be repeatedly subjected to unidirectional bending stress Therefore, it is sometimes stressed by stress. In the strengthening process, it is simulated that the leaf spring will be subjected to “stress strengthening” in the future use process, so that it will apply a “static stress” in the direction of the load. After the strengthening is completed, the applied static stress is released. Experiments have shown that stress strengthening can further extend the service life of the leaf spring than conventional strengthening.