Introduction to Crushing Theories of Crusher Machine

Many people think that the mineral crushing is to impose pressure on the materials to make the materials deform. When the energy absorbed by the deformation is sufficient to overcome the binding force between the materials, the displacement of the materials may be generated, which is called the lattice displacement in the micro point. In the macro point, the materials are crushed. In the history process for crushing the materials with purpose, people have developed a variety of mechanical crushing equipment devices, such as jaw crusher, gyratory crusher and impact crusher. These traditional crushing equipments are still in use. The basic crushing theory has not been changed.
With constant further study on the materials and the improvements of the test means, the modern mechanics of materials science is gradually established. There are great changes in terms of the understandings of people for the properties and the performance of the materials. We can use the modern testing techniques to achieve the mechanics analysis about the rock. It was discovered that the capacity that the rock withstands the pressure destruction is far greater than its ability to withstand the shearing force destruction. After the test, the ultimate compressive stress of the rock is 6 times to 10 times as the limit shear stress and it is 2 times to 4 times as the ultimate tensile stress. For a long time, people only use the extrusion method to crush the rocks but not use the more reasonable ways, such as stretching method or the shearing methods.
The grading crusher machine with high strength is designed based on the shearing crushing principle of the rocks. That is to say that a shearing force is imposed on the rock to make the rock can generate the bending torque by withstanding the shearing force to make the rock crushed. The final particle size of the materials crushed by the traditional crusher machine is very difficult to control. The high-strength grading crusher machine produced by Henan Hongxing Mining Machinery has the advantages of large crushing capacity and small floor space. This kind of crusher machine has much more advantages than the traditional crushers.
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