2021-05-18
The ring die compression ratio in the pellet machine refers to the ratio of the effective length of the ring die hole to the smallest diameter of the ring die hole, and it is a guideline that reflects the extrusion strength of the pellets. The larger the compression ratio, the stronger the extruded pellets. How is the compression ratio of the wood pellet machine mold calculated? Today, the editor will come to talk with you about the compression ratio of the wood pellet machine
Let's give an example based on past experience. The compression ratio of eucalyptus is 1:3.7~1:4, the compression ratio of mahogany is 1:4~1:4.5, the compression ratio of hard wood is 1:4.5, and the compression ratio of pine is 1:5~1:6 , The compression ratio of poplar wood is 1:6~1:7, the compression ratio of bamboo chips is 1:4, the compression ratio of corn stalks is 1:6~1:8, and the compression ratio of grass is 1:9~1: 10.
The compression ratio of different materials is different. The harder the material, the smaller the compression ratio, and the looser the material, the larger the compression ratio. In other words, the looser the material, the simpler it is to restrict molding. The material is simply formed, so let's talk about the compression ratio of poplar wood 1:6. What do the numbers 1 and 6 represent? Each small hole of the ring die pellet machine has 6mm, 8mm, 10mm directly, this 1 represents the diameter of each small hole, if the diameter of the ring die hole is 8mm, then this 1 represents 8 , And 6 represents the effective aperture. The effective aperture is equal to the diameter of the hole multiplied by the effective aperture length, which is 6*8=48, which is 8:48.8:48 simplified to 1:6,1: 6 is also the compression ratio of poplar wood, which is converted in this way. The quality of the wood pellet machine depends on the compression ratio of the ring die, but if the molding rate of the wood pellets produced by the customer is not very high, then you can appropriately The reduction of the compression ratio, which can increase the output value, but also reduce the service life of the mold and the pressing wheel.
Roughness is also an important guideline to measure the quality of ring die. Under the same shrinkage ratio, the greater the roughness value, the greater the extrusion resistance of the sawdust particles, and the more difficult it is to discharge. The excessive roughness also affects the quality of the particle appearance. The suitable roughness value should be between 0.8 and 1.6.
The above is an introduction to the common sense about the compression ratio of the wood pellet machine. Only by understanding the performance and common sense of the wood pellet machine can we better operate and use the equipment.
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