What do you pay attention to when using shredders at high temperatures?
How to maintain the shredder motor working under high temperature in order to get through the hot summer. Things can not be exposed to the sun, let alone our work shredder! Shredder in the waste processing is essential equipment, the motor is the basis of the equipment. Assuming that the motor is bad, then the equipment can not run normally, so to protect the motor parts.
How to clean the shredder motor shortcomings, the following manufacturers teach you a few small good methods:
- The motor part of the work to check the motor bearing is not excessive wear or poor device, constitute stator, rotor phase friction, so that the iron core surface damage, which in turn constitutes a short circuit between the silicon steel sheet, motor iron loss increase, so that the motor temperature rise is too high. At this time, the use of fine files and other things to remove burrs, eliminate the silicon steel short, clean up after coated with insulating varnish, and heating and drying.
- Work at high temperatures to keep checking the motor core and the seat of the contact between the loose, you can tighten the original positioning screws. If the positioning screws fail, can be re-drilled and tapped positioning holes in the chassis, tighten the positioning screws. Bearing shortcomings repair rotating shaft through the bearing support tumbling, is the heaviest load some, but also a brief wear parts.
Following the development of scientific skills, the knowledge of metal crushing has also made great progress. Granular metal selection of a variety of different crushing methods, you can get a few microns of metal, in order to adapt to a variety of skill requirements.
In industry, today's widely used metal crushing methods are still mechanical force crushing, kneading, splitting, breaking, grinding and impact crushing. Non-mechanical force crushing has not yet been used in large industrial production.
Metal in the effect of external forces, the onset of stress reached the limit of strength, metal that is broken. Shredding machinery force application methods are the following.
- Crushing: the metal is placed between the two kneading surface, after the application of force, because the metal compressive stress reaches the limit of compressive strength and broken.
- Splitting: the metal is placed between a plane and a tooth, when the kneading force is applied, tensile stress occurs in the metal, because of its tensile stress arrives at the tensile strength limit, it is split along the direction of the effect force.
- Fracture: the metal is placed between two Yuan surfaces with teeth, when the kneading force is applied, its bending stress reaches the material bending strength limit, then the metal is fractured.
- Impact Crushing: The metal is crushed by the impact force of high-speed rotation. This method can be completed in many ways. Because of the force is a split second effect, the deformation is too late to extend to the parts of the impacted material, only in the impact of a fairly large part of the stress, along the internal microscopic cracks broken. Therefore, the crushing effect of dynamic load is far greater than the static load.
- Grinding: the metal is placed between the two relative movement of the work surface, together with the application of pressure and shear force, the metal in the onset of shear stress arrives at its shear strength limit, then the metal is broken.
In fact, a variety of shredder in the process of crushing metal, are several crushing methods to summarize the effect of the effect. However, it must be one or two kinds of force application method, and other crushing methods. Because of the physical and mechanical properties of various metals are not the same as the great, so the shredder should be applied with the mechanical properties of the metal and the mechanical properties of the accustomed, in order to achieve good crushing effect. Various hardness of the metal selection of impact crushing or collaborative fracture to crushing is more appropriate, such as grinding crushing, serious wear and tear of the machine parts; for brittle metals, the selection of splitting, bending and crushing crushing is more favorable, if you use the grinding of destruction, then the metal in the fines will increase; for the resistance and viscous metal selection of grinding and splitting method is more appropriate.
