Any kind of crushing machine and grinding machine not only broken ore in a force, usually some kind of force-based, with other types of force, therefore, ore crusher mechanical force is applied to the complex . In order to facilitate analysis and research, the main forces are often considered, and the effects on other types of forces are only subject to additional examination. The force application of the crushing machine can be divided into crushing, splitting, breaking, grinding and impacting, etc., which are shown in the following figure. The mechanical force is different, and the type of strength of the ore that should be considered is also different. For crushing, the compressive strength of the ore should be considered; for the splitting, attention should be paid to its tensile strength; for breaking, the bending strength of the ore should be noted; when grinding ore, the shear resistance should be considered. Strength, crushing machinery uses its working parts to repeatedly act on the ore with dynamic load, so it has a certain impact effect. When the ore is impacted, it should consider its impact strength, and learn the work of various crushing machines in the future. In principle, the force application of them should be clearly defined. For example, when the ore is broken between the tooth plates of the jaw crusher, it is subjected to the splitting action, and the anti-cracking strength of the ore is about 1.2 times the tensile strength. .
Figure  The force applied by the crushing machine to the ore
(a) crushing; (b) splitting; (c) breaking; (d) grinding and stripping; (e) impact
When an object hits another object, the former's kinetic energy rapidly changes to the latter's deformation potential energy, and is locally concentrated at the impact. If the impact speed is high and the deformation does not extend to all of the impacted object, considerable local stress occurs at the impact, so the dynamic load is more damaging than the static load. If the load exceeds the fatigue limit and the number of repeated impacts is increased, the stress required for the damage can be reduced. Therefore, the use of high-frequency impact method to break the ore has a good effect, the power consumption is small, the crushing ratio is high and the crushing is light, and it is easy to fully dissociate at the coarser particle level. In recent years, the impact crusher and vibratory ball mill have been characterized by high frequency impact.
Ores are generally composed of a variety of minerals, their physical properties are not the same, and sometimes very different, such as coal and coal block pyrite and gangue promoter, pegmatite and a length of beryl Stone and so on. When such ore is broken, the conditions in which the minerals are broken are different, some are broken into coarser particles, and some are finer. This phenomenon is called selective fragmentation. The root cause of selective crushing is that the mechanical properties of the minerals in the ore vary widely, but the performance of the crushing machinery also has an impact, such as the impact crusher and the self-grinding machine are more likely to produce selective crushing. Note that this phenomenon is important in the beneficiation process. For example, for ores that are more muddy than useful gangues, the dissociated fractions containing more minerals should be separated first, without having to wait for all the minerals to be ground to the same fineness, thus helping to alleviate Smash. The screening method is based on selective fragmentation.
After understanding the mechanical properties of the ore and the force application of the crusher, it is necessary to pay attention to the way the crusher is applied in accordance with the nature of the ore, in order to have a good effect. For hard ore, it should be broken with a shock to break it. If it is peeled off, the machine will be severely worn. For brittle ores, bending and splitting are advantageous. If it is peeled off, too much fine powder in the product will be too much. For ore with high toughness and viscosity, it is more reasonable to crush it by grinding and peeling. Since the mechanical properties of the material are various, the crushing machinery is also diverse. In the future, although only the typical machinery for processing rock ore is introduced, there is no equipment related to the coal preparation plant and some chemical raw materials. If we understand that the force application of the crushing machinery must be compatible with the nature of the ore, we can Analyzes.
Meticulous division of labour, consecutive processes, professional of manufacture and high standard equipment ensure the high quality of the machine.
Factory introduced high precision maching tools, with the equipment of cutting machine tools, heattreating facilities, check out test sets and painting facilities, the processing ability for middle and large size machine, reach a high level in plastic industry while the quality if the machine is ensured at the same time.
All kinds of fruit and vegetables containers can be designed and produced by this machine.
All production line can be provided.
Vertification of many year's market application, optimal combination configuration, stable, reliable and durable system with the characteristics of high efficiency, energy saving, low voice and strong power.
The strengthening design of template is carried out through multiple times of optimization design of major components such as template, based on the analysis of finite element software, which both guarantee the lifetime of template and protected mould.
High rigid template adopts the structure with coexistence of installation screw hole and T-shaped groove.
The tie rod of each machine model has passed the test by professional testing organization, which means that, the deflection of tie rod is within reasonable scope while guaranteeing the operation of machine.
Plastic Fruit Box Making Machines
Plastic Fruit Box Making Machines,Smack-Box Making,Four Pillars Fruit Box Making Machine,Food Container Making Machine
Ningbo Tongyong Plastic Machinery Manufacturering Co. Ltd. , https://www.tongyongmachinery.com