​Main Manufacturing Process Of Ring Die

​Main Manufacturing Process Of Ring Die
Product Details

1.Forging and Lathing:
Extremely precise forging and lathing assure high dimensional accuracy, bright and clean surface.

2.Die Hole processing:
Advanced Germany gun drill equipment, tools and drilling hole software are used in  die hole processing:
High accuracy of die hole positon;
High rotating speed and imported tools and cooling liquid ensures process conditions as drilling required;
Small roughness of the processed die hole, ensure pelleting output and quality;
Quality and service life of die is guaranteed.
3.Vacuum heat treatment
Ring die surface:No oxidation reaction;
Die hole inner surface:Original smoothness;
High stability, High hardness;High tenacity

Compression Ratio of Ring Die
Generally speaking, the higher the compression ratio, the denser the finished pellets.But it does not mean that the higher the compression ratio, the better the pellet quality.Compression ratio should be calculated based on raw material for making pellets and type of feed.
Buyers can customize dies with different hole diameter and compression ratio, according to different situation and requirement.

 Hole Diameter(mm)Compression Ratio
Poultry&livestock feed2.5-4.51:4-1:8
Fish&Shrimp feed1.0-2.51:16-1:28
Biomass&Wood pellet6.0-12.01:4-1:8

The most common structure of die hole are straight hole;Release stepped hole;External conical hole and internal conical hole, etc. Different die holes structure are suitable for different raw material and feed formula for making pellets.

ModelMaterial TypeFeed TypeHoles Diameter of ring die
1 High starch feedφ2-φ6
2Pellet of livestock and poultryHigh energy feedφ2-φ6
3Pellet of aqua feedHigh protein feedφ1.5-φ3.5
4Pellet of compound fertilizerFeed include ureaφ3-φ6
5Pellet of hopsHigh fibre feedφ5-φ8
6Pellet of chrysanthemumHigh fibre feedφ5-φ8
7Pellet of peanut shellHigh fibre feedφ5-φ8
8Pellet of cottonseed hullHigh fibre feedφ5-φ8
9Pellet of turfHigh fibre feedφ5-φ8

How to maintain and inspect the ring die?
1.The rollers should be correctly adjusted, make sure the hole inlets are not damaged by contact with the rollers or as a result of tramp metal;
2.Material should be evenly distributed across the whole working area;
3.Make sure that all holes work uniformly, opening the clogged holes if necessary;
4.When changing dies, carefully inspect the condition of the die seating surfaces and fixing systems including collar, clamp or wear ring.