Introduction of Ring die
Ring die is very important part of ring die pellet machine in the whole manufacturing process. The quality of ring die not only directly relates with the quality and output of pellets, but also the running state of equipment and maintenance cost.
Applicable for Biomass pellet machine: wood pellet mill, sawdust pellet mill, grass pellet mill, straw pellet mill, crop stalk pellet machine, alfalfa pellet mill etc.
For Biomass Wood Pellet
We can supply ring die for all the main brands of pellet machine such as ANDRITZ, CPM, IEMME, JKAP, SOGEM, SPROUT(UMT), MATADOR(UMT), MABRIK,BUEHLER, PALADIN, PTN, PROMILL,YEMMAK etc.
Custom dimensions and drawings of ring die are welcome!
Advantages of FDSP ring dies:
|20 years of experience in ring die production|
|High chromium high carbon content steels|
|Extremely precise manufacture|
|Advanced imported equipment|
|High hardness after vacuum heat treatment|
|Rapid delivery times|
|Test and control before shipment|
|Long service time|
The video introduction of ring die and roller shell
Main Manufacturing Process of Ring die
1. Precision Machining
CNC machining center :assure high dimensional accuracy,geometric tolerance and surface roughness.
2.Die Hole processing
Advanced Germany gun drill equipment, tools and drilling hole software are used in die hole processing:
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.
With many years pellet die manufacturing and research experience of FDSP GROUP, we provide some general data of ring die's compression ratio for your reference:
Buyers can customize dies with different hole diameter and compression ratio, according to different situation and requirement.
|Ring die type||Hole Diameter(mm)||Compression Ratio|
|Ring die for biomass pellet machine||6.0 - 8.0||1:5-1:8|
|Ring die for poultry&livestock feed||2.5 - 4||1:4-1:11|
|Ring die for fish feed||2.0 - 2.5||1:12-1:14|
|Ring die for shrimp feed||0.4 - 1.8||1:18-1:25|
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 formula for making pellets.