How to maintain the shredder motor working in high temperatures to get through the scorching summer heat. Items cannot be exposed to direct sunlight, let alone the shredder we work on! The shredder is an essential equipment in the processing of waste materials, and the motor is the base of the equipment. If the motor is broken, the equipment cannot operate normally, so it is necessary to protect the motor parts.

　　How to clean the shortcomings of the shredder motor? Here are a few good methods taught by the manufacturer:

　　1. The motor department checks whether the motor bearings are excessively worn or poorly installed, causing friction between the stator and rotor, resulting in damage to the surface of the iron core and causing short circuits between the silicon steel sheets. This increases the iron loss of the motor and leads to excessive temperature rise. At this point, use a fine file or other tool to remove burrs, eliminate short circuits in silicon steel sheets, clean up and apply insulation paint, and heat dry.

　　2. When working at high temperatures, it is important to regularly check for loose connections between the motor core and the base, and tighten the existing positioning screws. If the positioning screw fails, the positioning hole can be re drilled and tapped on the machine base, and the positioning screw can be tightened. The maintenance of bearing defects involves the rolling of the shaft supported by bearings, which are the heaviest and most easily worn components.

　　With the development of scientific skills, there has been significant progress in understanding metal fragmentation. Particle metals can be broken using various methods to obtain metals as small as a few micrometers, requiring various skills to adapt.

　　In industry, the widely used metal crushing method today is still mechanical force crushing, including kneading, splitting, breaking, grinding, and impact crushing. Non mechanical crushing has not yet been applied in large-scale industrial production.

　　Under the effect of external force, the stress exerted on the metal reaches its ultimate strength, causing the metal to break. There are several methods of applying force to shredding machinery.

　　Crushing: Place the metal between two kneading surfaces, apply force, and break it due to the metal's compressive stress reaching the compressive strength limit.

　　B Splitting: Place metal between a flat surface and a tooth, and when a kneading force is applied, tensile stress occurs in the metal. As the tensile stress reaches the tensile strength limit, it splits along the direction of the effect force.

　　C fracture: Place metal between two toothed surfaces, and when a kneading force is applied and the bending stress reaches the material's bending strength limit, the metal is fractured.

　　D Impact fragmentation: Metal is shattered by the impact force of high-speed rotation. This method can be completed in multiple ways. Due to the instantaneous effect of the applied force, the deformation did not have time to extend to all parts of the impacted object, and only a significant portion of the stress occurred at the impact site, breaking along the microscopic cracks inside. So, the crushing effect of dynamic loads is much greater than that of static loads.

　　Grinding: Place metal between two working surfaces in relative motion, apply pressure and shear force together, and when the shear stress generated in the metal reaches its shear strength limit, the metal will break.

　　In fact, various shredders are the result of summarizing the effects of several crushing methods in the process of crushing metal. However, one or two force application methods must be the main approach, along with other crushing methods. Due to the significant differences in the physical and mechanical properties of various metals, the force application method of the shredder should be consistent with the mechanical properties of the metals in order to achieve good crushing results. It is suitable to use impact crushing or cooperative breaking to crush metals of various hardness. If grinding is used for crushing, the mechanical parts will wear severely; For brittle metals, it is advantageous to use splitting, bending, and crushing methods. If grinding is used for destruction, the amount of fine powder in the metal will increase; For metals with high resistance and viscosity, grinding and splitting methods are more suitable.