FDSP is specialized in the production of dies for all the main brands of pellet mills. We have rich experience in manufacturing ring die, and supply tailor-made ring dies with all kinds of models to satisfy clients' different requirements. Our plant realizes full automation and adopts top technology, the ring dies manufactured to be exported to all over the world.
Our dies are manufactured in the following steels:
Dies made in 20MnCr5 and18 NiCrMo5 steel, on the other hand, are case hardened to obtain 60-62HRc hardness for approximately 0.8-1.2mm. Under the case hardened layer the steel remains malleable and therefore less brinle. The dies made of this steel are more resistant for pelleting extremely difficult fibre-rich products such as beet pulp, alfalfa, straw and hay.
FDSP dies have an extremely precise and regular perforation: the "honey comb" layout of the holes is faultless.
Deep hole via gun drill drilling: ring die holes array evenly, uniform wall thickness between holes, to ensure ring die works successfully in pellet mill with smooth surface of pellet. It is important to upgrade smooth and polish level of ring die holes in order to decrease temperature difference, lower energy consumption, raise capacity, and reduce loss of nutrition FDSP reach international advanced level relate to hardness of ring die, evenness and smoothness of holes.
Measurement of ring die dimension
1. Inspect the dimension of forging stock according to the order contract, measure with vernier caliper, and the deviation shall be less than ±1mm.Based on the inner circle, rotating table and dial indicator shall be applied to inspect outer circle of forging stock and face runout, with deviation less than 1.0mm