Spring internal support type three-ring punch
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The head ring installed on the punch plays a role in sealing the aluminum during the injection process. The middle ring and tail ring are designed with openings, which can continuously and stably compensate for the friction loss between the middle ring, tail ring, and the inner wall of the melting cup under the action of the internal support spring, ensuring that the middle ring and tail ring are always closely attached to the inner wall of the compression chamber. In vacuum applications, this can stably reduce the vacuum value, greatly improving product quality and providing strong support for casting equipment to produce high-end products and increase the pass rate of high-end products.

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