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What is Ring Die
Ring dies are ring fittings with porous surfaces. Ring molds have thin walls, and dense holes, and assembly requires high dimensional accuracy. It is one of the most important and easily worn accessories in the pellet mill.
The ring die is mainly made of high carbon and high chromium steel (4Cr13) and alloy steel, in order to ensure the wear resistance and corrosion resistance of the ring die. The hardness of the ring die is ensured by high temperature carbonizing or vacuum quenching. The ring die should have a suitable die hole arrangement and compression ratio based on the product to be manufactured so that it will be more productive with the same opening area.
During the production of a ring die, each step must be finished to the standard size in order to ensure that the various indicators will meet the requirements.
As raw materials are extruded into the die hole of the pellet mill, the ring die cooperates with the roller shell to produce the desired granular product. Ring dies are very easy to wear due to the constant friction of the material. As a result, a ring die's quality directly affects the extruded particles' quality.
Currently, ring dies are widely used for producing animal feed, biomass pellets, pharmaceuticals, aquatic feed, livestock feed, and other pellets.
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