The Mining heavy machinery deficit of import and export is decreasing
Source:www.greatwallcrusher.com Author:GreatWall Posted:2011-02-15 Views:
In stone crushing plant processing when the stress value from the external load is greater than the theoretical stress value, the crack propagates well broken, in fact, the totally brittle materials does not exist, any material have certain toughness.
Stone Crushing Plant Ore Ductile Fracture: Cleavage fracture, external force is the role of the rock apart without plastic deformation, but the ductile fracture is alien to the cleavage fracture. The ductile fracture rushing mechanism is related to the hole ductile fracture of the growth and the accumulation of the necessary dislocation. To make ductile fracture happen, in addition to stress to dislocation movement outside, still need to have a certain plastic deformation, plastic deformation is the result of material yield. The yield strength of normal material is 07. The plastic deformation, can be a very small plastic fracture path through the limitation of deformation, only need a small energy. Ore can be crushed in the relatively low stress, from the sharp or cracks began, so the broken can be implemented in a fairly low down force. As shown in schematic diagram of various bits of germanium, these defects with various dislocation changes under the action of external force, increasing the size of defects,so that the material strength decreases, until the materials are crushed.
The reasonably broken process of stone production line should make full use of these stages, the best condition with each successive process,selective crushing and poor rock breaking process, namely the crushing process crushing grinding machine existing in, can be said that most of the time the optimum conditions and the stage procedure did not keep.
Stone Crushing Plant Ore Ductile Fracture: Cleavage fracture, external force is the role of the rock apart without plastic deformation, but the ductile fracture is alien to the cleavage fracture. The ductile fracture rushing mechanism is related to the hole ductile fracture of the growth and the accumulation of the necessary dislocation. To make ductile fracture happen, in addition to stress to dislocation movement outside, still need to have a certain plastic deformation, plastic deformation is the result of material yield. The yield strength of normal material is 07. The plastic deformation, can be a very small plastic fracture path through the limitation of deformation, only need a small energy. Ore can be crushed in the relatively low stress, from the sharp or cracks began, so the broken can be implemented in a fairly low down force. As shown in schematic diagram of various bits of germanium, these defects with various dislocation changes under the action of external force, increasing the size of defects,so that the material strength decreases, until the materials are crushed.
The reasonably broken process of stone production line should make full use of these stages, the best condition with each successive process,selective crushing and poor rock breaking process, namely the crushing process crushing grinding machine existing in, can be said that most of the time the optimum conditions and the stage procedure did not keep.