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The Compression Ratio Of Ring Die
Dec 20, 2018

How is the compression ratio of the wood pellet machine calculated?The compression ratio of the ring die refers to the ratio of the effective working length of the ring die to the diameter of the die hole. The compression ratio of the ring mold can be selected according to the material formulation and product requirements.

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So according to Kingwood past practice, let’s take a few simple pieces of wood. 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 hardwood is 1:4.5, and the compression ratio of pine is 1:5~1:6. The compression ratio of poplar is 1:6~1:7, the compression ratio of bamboo chips is 1:4, the compression ratio of corn stalk is 1:6~1:8, and the compression ratio of grass is 1:9~1: 10. (About the number, specifically related to the customer's raw materials, the most important thing is to know the principle, after the actual test is considered the standard).The compression ratio of different raw materials is different. The harder the raw material is, the smaller the compression ratio is. The more bulky the raw material is, the larger the compression ratio is. That is to say, the more fluffy the raw material is, the easier it is to press-form. The more fluffy raw material contains more fiber, the more fiber-containing material. Easy to shape, then let's talk about the compression ratio of poplar 1:6. What do the numbers 1 and 6 represent? Each small hole of the ring die machine has 6mm, 8mm, 10mm directly. This 1 represents the diameter of the hole of each hole. If the diameter of the ring 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, that is, 8:48.8:48 is simplified to 1:6, 1:6 also That is, the compression ratio of poplar wood is converted in this way. The output of wood chip machine depends on the compression ratio of the ring die, but if the customer's molding rate for your wood chip is not very high, then you can reduce the compression ratio appropriately. This will increase the output and reduce the service life of the die and the pressure roller.


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